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Can The Color Of Carbon Fiber Tube Be White?

I believe that those who have come into contact with carbon fiber material know that it is a new black material, nicknamed "black gold". The carbon fiber yarn is black, the carbon fiber prepreg is black, and the carbon fiber tube is also black. Does it mean that carbon fiber tubes and other products can not have other colors?

Carbon fiber tube can be painted to achieve a variety of colors

There are various production processes for carbon fiber tubes, including pultrusion, winding, coiling and molding processes. The process is different, but the raw material used is basically the same, which is a prepreg made by fusing carbon fiber tow and resin matrix.

Carbon fiber prepreg has a black appearance, which may be non-grainy, cross-grainy or twill-grainy, and will naturally have a signature black appearance when processed into products. However, during the processing of carbon fiber products, there is also a painting process, which can paint the appearance of carbon fiber tubes in various colors, such as white, yellow, blue, etc.

The colored paint on the surface of the carbon fiber tube is sprayed at room temperature and will not be baked at high temperature because the carbon fiber tube itself has limited resistance to high temperature, even if it is baked at low temperature, it is necessary to judge whether it is feasible according to the temperature.

What is the reason for painting the carbon fiber tube with color

The original painting of carbon fiber tubes is mostly done with clear water paint and then polished to a glossy or matte texture. Painting allows the carbon fiber tube to be colored more naturally, while insulating it from humid air and providing some protection.

Why would you consider spraying carbon fiber tubes with different colors? Naturally, it is determined by the customer's own needs. In practice, carbon fiber tubes are often used in combination with other components and need a uniform color, or perhaps different colors for different areas of the equipment for functional and maintenance purposes, so the customer's needs are very important.

Carbon fiber tube sprayed with clear water paint or colored paint has no effect on the performance of the carbon fiber tube, which is equivalent to adding a thin coat. The performance advantages of carbon fiber tube are light weight and high strength, and the paint will not destroy these properties, but will play a supporting role.

We are a professional manufacturer of carbon fiber tubes and have been committed to providing quality products to our customers, if you are interested in this, please contact Coreco Ltd.

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Bio-Based Cannot Replace Petroleum-Based Carbon Fibers

Bio-based cannot replace petroleum-based carbon fibers

Carbon fiber materials are gradually becoming known because they can be used in many fields such as aerospace, automotive manufacturing, rail transportation, high-end medical and sports equipment. Carbon fiber has high strength performance, which makes many industries see the hope of development. There are also many classifications of carbon fiber, such as petroleum-based and bio-based carbon fiber. Currently, petroleum-based carbon fiber has better performance and higher capacity, but bio-based carbon fiber also has its own potential.

Petroleum-based carbon fiber is currently the mainstream of the market

At present, the mainstream carbon fiber products in the market are petroleum-based carbon fiber, including polyacrylonitrile (PAN)-based carbon fiber, asphalt-based carbon fiber and viscose based carbon fiber, let's look at the actual percentage of these three types of carbon fiber.

Currently, polyacrylonitrile (PAN)-based carbon fiber accounts for more than 90% of the total carbon fiber production, asphalt-based accounts for about 7%, and viscose filament-based accounts for about 1%. Why there is such a big difference in the percentage, it is only the performance level and refining difficulty, polyacrylonitrile (PAN) based carbon fiber is the mainstream product in the market, but also the fundamental petroleum-based carbon fiber to occupy the market.

Carbon fibers are incredibly thin threads of almost pure carbon crystals, 5-10 microns in diameter, with a mechanical strength five times that of steel and twice the hardness of steel. Carbon fibers were first made from plant-based materials such as cellulose and rayon, until they were replaced by petroleum products for lower cost and higher performance.

To make carbon fiber, petroleum was first processed into the highly toxic polyacrylonitrile (PAN). It is drawn into thin threads and then heated in an oven without oxygen. But the production process requires a lot of energy and produces a lot of emissions and toxins. Unlike the past when people were only concerned with cost, sustainability is now more important and oil has become less affordable.

Why develop bio-based carbon fibers?

Compared to polyacrylonitrile (PAN)-based fibers, bio-based carbon fibers are at the low to mid-range of performance, but why develop bio-based carbon fibers? This has to be understood from some disadvantages of petroleum-based carbon fibers.

The processing of petroleum-based carbon fibers consumes a lot of energy and produces hazardous substances, which can bring greater harm to the environment. In addition, the current recycling problem of carbon fiber products is difficult to solve, which causes the actual problem of higher production cost of petroleum-based carbon fiber and the difficulty of recycling and processing afterwards.

In order to reduce the cost of carbon fiber production and the dependence on fossil raw materials, the research of biomass-based carbon fiber raw filaments has received increasing attention, such as the development and utilization of raw materials such as lignin, glycerol (propanetriol) and lignocellulosic sugar.

Environmental protection is a pressing issue around the world nowadays and is the consensus of all countries. Although carbon fiber materials have obvious advantages, they are not environmentally friendly, so scientists want to find a solution to the problem. Carbon neutral" is the opportunity to promote the development of bio-based carbon fiber. Petroleum-based carbon fiber can not replace bio-based carbon fiber, the future of the 2 directions of carbon fiber will go hand in hand, depending on which direction there is a breakthrough in a greater achievement.

We are a professional supplier of carbon fiber products, and we have been committed to providing customers with high quality products, if you are interested in this, please contact Coreco Co.

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We are a professional manufacturer of carbon fiber products and have been committed to providing quality products to our customers, if you are interested in this, please contact Coreco Ltd.

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We are a professional manufacturer of carbon fiber products and have been committed to providing quality products to our customers, if you are interested in this, please contact Coreco Ltd.

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Carbon Fiber Industry Ushers In A New Stage Of Development

The history of carbon fiber development in China has actually been about 60 years, almost starting at the same time as Japan, but it is 30 years behind Japan in terms of advanced degree. It is meaningless to trace the historical reasons, what we have to do is how to develop and progress in the next decades to catch up with Japan. Let's take a look at the current situation of the development of the domestic carbon fiber industry and what the prospects for future development are.

The current situation of the carbon fiber industry

The core of the carbon fiber industry chain contains the upstream carbon fiber filament preparation, the midstream carbonization link and the downstream carbon fiber composite application. To improve the domestic carbon fiber industrial chain, we need to start from carbon fiber raw filament, carbon fiber prepreg, carbon fiber composite materials and other aspects, which requires high technology, and technology is precisely the core part that we lack.

From the technical point of view, the process of carbon fiber manufacturing is very complex, is a set of multidisciplinary, refined, highly sophisticated technology in one of the system engineering, which involves physics, chemistry, textiles, materials, precision machinery, automation and other disciplines; the process includes temperature and humidity, concentration, annual, flow and other thousands of parameters of high-precision control, comprehensive control to ultimately ensure the stability of carbon fiber performance and quality.

Come to look at some data in 2016, although not quite accurate, but it can reflect the problems that exist. By the end of 2016, there were 6 enterprises with 1,000-ton production lines, 5 enterprises with 500-ton production lines, 9 enterprises with 100-ton production lines, and more than 10 enterprises with less than 100t capacity. This data shows that there is a serious shortage of enterprises engaged in carbon fiber production in China, and the production capacity of enterprises is also seriously insufficient.

The total number of enterprises engaged in carbon fiber production nationwide is not more than 50, and the total capacity of these enterprises is about 3600t in 2016, which is not even 1/10 of the capacity of one enterprise in Japan, Toray, not to mention that there are many carbon fiber enterprises in Japan, such as Teijin and Mitsubishi, by looking at the total capacity alone. And in 2015, the total domestic demand for carbon fiber reached 18,400 tons, the production capacity is far below the demand, the self-sufficiency rate is less than 1/5, not to mention the domestic carbon fiber in performance is not up to the standard of Japan Toray.

Carbon fiber industry ushers in a new stage of development

In the last 5-10 years, the development speed of domestic carbon fiber has been very fast, especially in the "13th Five-Year Plan" to attach great importance to the carbon fiber industry, as well as the "Carbon Dafeng - Carbon Neutral" policy, the country's attention to the carbon fiber industry has reached the highest peak, which indicates that the domestic carbon fiber industry will usher in a new stage of development.

Many large carbon fiber bases will be landed soon, and Jilin Carbon Valley is one of the larger ones. Let's look at some data of Jilin Carbon Valley, in 2021, Jilin Carbon Valley achieved operating revenue of 1.209 billion yuan, up 9.71% year-on-year; achieved net profit attributable to shareholders of listed companies of 315 million yuan, up 126% year-on-year. Domestic carbon fiber production capacity has risen significantly, while most importantly, carbon fiber companies have achieved profit growth, which indicates a very promising future for domestic carbon fiber.

We are a professional manufacturer of carbon fiber products and have been committed to providing our customers with high quality products, if you are interested in this, please contact Coreco Co.

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Four Points Of Difference Between Glass Fiber And Carbon Fiber

Industrial material industry practitioners should know the glass fiber and carbon fiber these 2 materials, in the domestic glass fiber appeared earlier, 2000 ~ 2010 years very hot, and carbon fiber is the last 10 years gradually hot new materials. Some people say that carbon fiber materials will slowly replace glass fiber, whether this statement is correct or not we will not talk about it, let's first understand the 4 basic differences between glass fiber and carbon fiber.

Four points of difference between glass fiber and carbon fiber

Before understanding the difference between the two materials, we should know that the two materials have many similarities, such as density, production process, domestic development, etc., and carbon fiber as a latecomer, in terms of performance does have a superiority.

1. Rigidity: rigidity refers to the ability of the material or structure to resist elastic deformation when subjected to force, carbon fiber materials perform better in this performance, glass fiber is slightly inferior. Fiberglass is suitable for use in places where rigidity is not required, such as helmets, etc.

2. Strength: carbon fiber in the tensile strength of the advantage of some greater, general-purpose carbon fiber tensile strength can reach 1000MPa, high strength carbon fiber can even reach 3500MPa, general-purpose glass fiber tensile strength can also reach 1000MPa, high strength glass fiber only about 2800MPa, carbon fiber has a higher ceiling.

3. Durability: durability is a relatively large range of words, including multiple properties, such as high temperature resistance, low temperature resistance, acid and alkali resistance, corrosion resistance, impact resistance, etc., in these properties of glass fiber and carbon fiber have advantages and disadvantages. In terms of high temperature resistance, glass fiber is deeper, acid and alkali resistance is similar, and carbon fiber is slightly better in impact resistance. Overall service life, carbon fiber is longer, but in the characteristics of the use of the environment, it is impossible to make an exact comparison.

4.Price: The price of glass fiber is lower than carbon fiber, and a lot lower. First of all, the popularity of glass fiber in the domestic earlier, greater capacity, domestic carbon fiber production capacity is seriously inadequate, imports are restricted, the price is naturally higher than glass fiber. In addition, the performance of carbon fiber in the specific strength and modulus is better, in many high-end fields (such as aerospace) more attention, coupled with the complexity of the production process, resulting in higher prices of carbon fiber.

Glass fiber and carbon fiber have their own advantages and disadvantages, and it is impossible to deduce which fiber material is better simply by comparing one performance. Therefore, the proposition that carbon fiber will completely replace glass fiber is not valid at present, and even in the next 20 years, this proposition is still not possible.

We are a professional manufacturer of carbon fiber products and have been committed to providing quality products to our customers, if you are interested in this, please contact Coreco Ltd.

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Important Factor Affecting The Application Of Carbon Fiber Roller

The appearance quality and fabrication accuracy of carbon fiber rollers are important factors that affect their application role.

In addition to the strength and large proportion of weight reduction effect that is better than steel, the appearance quality and fabrication accuracy of carbon fiber tubes are also important factors that affect their application role. The common production methods of carbon fiber round and square tubes are fiber surround method and molded-hot pressed can process, but the outstanding drawback of using these processes is that the appearance quality of the produced tubes is not good enough, and the shaped tubes made by prepreg layered pocket pressing process also have the same appearance drawback problem. The quality of the exterior not only affects the appearance of the pipe's finish, but also affects the size of the pipe and the mechanical equipment, so improving the quality and accuracy of the pipe is a major difficulty in the production of carbon fiber pipe.

A few solutions for this type of problem are summarized:

1. The causes of shortcomings.

Carbon fiber pipe fittings of the finished product's appearance of the shortcomings of the primary wrinkles, stripes and rich glue and other problems, tracing the occurrence of these problems is mainly concentrated in the prepreg layer of this link, in the use of carbon fiber composite material prepreg layer, if you can not exert sufficient tension pressure prepreg laminated block, it will make the lay on the composite material prepreg layer is relatively loose, the overall thickness will also exceed the thickness of the target pipe products. Therefore, in the molding process, the general treatment is to press to compress the layers of composite material and make the remaining resin flow out, but this pressurization will bring two kinds of shortening force. First, the carbon fiber composite material laminated block in the compression, the thickness of the tube will be thinner, the outer diameter becomes smaller, the perimeter is also reduced accordingly, the fiber along the ring is bound to relax, the carbon fiber is pressed to produce zigzag, folding; Second, in the carbon fiber tube molding process often requires the use of some auxiliary materials on the prepreg laminated block blank, such as breathable felt and vacuum bags, these auxiliary materials in the compression will also Cause wrinkles and stripes, curing will be embossed on the appearance of the composite material, and eventually form wrinkles.

2. Pre-compaction combined with temperature control.

The experience of the root of the summary, to solve the shortcomings of carbon fiber pipe appearance is an important step in the carbon fiber prepreg laying process, the combination of pre-compaction and appropriate temperature control. The detailed operating principle is in the process of laying material, each laying after a few layers, at a certain temperature and pre-compaction, exerting a certain pressure to compact the layers of fiber, this timely pre-compaction can prevent the fiber relaxation of the layers of the pile, in a certain pressure and temperature and other process conditions, to remove the remaining resin, air bubbles and low boiling point material in the prepreg blank, so that the blank dense and fundamentally reach the intended thickness. The pre-compacted blanks do not need to be glued during the curing process, and the resin content of the carbon fiber composite material and the thickness of the pipe can be controlled.

3. Use suitable mold material

Carbon fiber composite material pipe is not strictly controlled by the accuracy of the inner diameter scale, but has high requirements for the outer diameter, and the selection of the mold has a large impact on the outer diameter scale. For the fiber surround process or rolled process, because the fiber around the compression force, the requirements of the set of shape simply adhere to the same, so the selection of the original material in the core mold, it is better to select a metal material with outstanding rigidity, such as steel and hard aluminum, steel density and hardness are greater than hard aluminum, but the coefficient of thermal expansion of steel is not as hard aluminum. The high performance carbon tube products are cured at high temperature, if the hard aluminum core mold is used, the curing internal pressure that occurs through the thermal expansion of hard aluminum can progress the density and mechanical properties of the carbon tube. Therefore, in the process of encircling the high performance carbon tube, the core mold should be used hard aluminum. In order to help improve the quality of pipe forming, the principle of selecting the core mold is to use the elastic material with a large coefficient of linear expansion to make the mold, with a small coefficient of linear expansion of steel as an auxiliary mold, forming through the elastic material to transfer pressure and apply pressure, the experiment proves that this approach works ideally.

4. Using the uniform pressure of heat shrinkable sleeve

In addition to the above methods, the heat shrinkage process can also be used to improve the appearance of carbon fiber tubing quality and production accuracy. In high temperature curing, the heat shrink material can be useful to transfer the pressure of the hot press tank and evenly eliminate the impact of the vacuum bag and the wrinkles of the breathable felt on the carbon fiber composite material. For example, the heat shrinkage characteristics of the heat shrinkage sleeve is used to evenly compress the composite material. When the carbon fiber composite material prepreg is heated, the resin softens and the heat shrinkage tube will be shortened and deformed after reaching a certain shortening temperature, and the composite material stack block is compacted in the process of uniform caliber reduction. After the heat shrinkage process, the carbon fiber composite material tube is encapsulated and then cured, and the heat shrinkage tube is stripped and peeled off after the curing process. The detailed selection of what kind of heat shrink material, need to be based on the shortening temperature of the material, shortening rate and temperature resistance and several other parameters for comprehensive consideration. The technical staff of the emphasis, in the use of heat shrinkage process should be done to prevent the following two problems: First, the heat shrinkage when the heat shrinkage tube rupture; Second, the shortening will cause the outer layer of fiber dislocation. Therefore, we must control the temperature, heating must be uniform, try to make the shortening process becomes slow, reduce the intensity of shrinkage.

We are a professional carbon fiber roller supplier and have been committed to providing customers with high quality products, if you are interested in this, please contact Coreco Co.

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The Main Uses And Practical Applications Of Carbon Fiber

The main use of carbon fiber is composite with resin, metal, ceramic and other matrix to make structural materials. Carbon fiber reinforced epoxy resin composite materials, its specific strength and specific modulus comprehensive index, in the existing structural materials is high. In the field of density, stiffness, weight, fatigue characteristics and other strict requirements, in the requirements of high temperature, high chemical stability, carbon fiber composites are quite advantageous.

Carbon fiber was created in the early 1950s in response to the needs of high science and technology such as rocket, astronautics and aviation, and now it is also widely used in sports equipment, textile, chemical machinery and medical fields. In the early 80's, high performance and ultra-high performance carbon fiber appeared one after another, which was another leap in technology and also marked that the research and production of carbon fiber had entered an advanced stage.

The composite material made by combining carbon fiber and epoxy resin has become an advanced aerospace material due to its low specific gravity, good rigidity and high strength. Because every 1kg reduction in the weight of spacecraft can reduce 500kg of launch vehicle. Therefore, there is a scramble to adopt advanced composite materials in the aerospace industry. There is a vertical takeoff and landing fighter, which has used carbon fiber composite materials accounted for 1/4 of the weight of the whole aircraft, accounting for 1/3 of the weight of the wings. it is reported that the key components of the three rocket boosters on the U.S. space shuttle and the advanced MX missile tubes, etc., are made of advanced carbon fiber composite materials.

The Formula 1 (World Formula 1 Championship) cars now use carbon fiber material for most of their body structure. A major selling point for top-of-the-line sports cars is also the use of carbon fiber around the body to improve aerodynamics and structural strength

Carbon fibers can be processed into fabrics, felts, mats, tapes, paper and other materials. Traditionally, carbon fiber is not used alone except as an insulation material, but is mostly added to resin, metal, ceramic, concrete and other materials as a reinforcing material to form a composite material. Carbon fiber reinforced composite materials can be used as aircraft structural materials, electromagnetic shielding materials, artificial ligaments and other body substitute materials, as well as for the manufacture of rocket shells, motor boats, industrial robots, automotive leaf springs and drive shafts, etc.

We are a professional supplier of carbon fiber products and have been committed to providing high quality products to our customers, if you are interested in this, please contact Coreco Co.

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Carbon fiber roller composite repair durability considerations

Carbon fiber roller composite repair durability considerations

How long can a composite material last after restoration? The answer is decades, but this requires proper protection. For example, glass fiber materials have a record of 50 years of service after repair, but this was only achieved with adequate protection against environmental aggression, including

1. High temperature (infrared radiation) and ultraviolet (UV) radiation can erode the resin and fiber

2. In humid environment, if the fiber is not wrapped with good sealing performance beforehand or the mold is not full enough, it will be eroded.

3. Chemical attack from fuel or gasoline, hydraulic fluids, antifreeze, acids, coating decolorizers and other solvents A good measure to protect against heat and UV radiation is to apply a suitable protective coating to the repair surface using UV inhibitors, so that the resulting glossy color is also sufficient to reflect infrared radiation.

A study conducted in the 1970s showed that the surface temperature of a black-coated composite could be 115°F to 120°F (i.e., 29°C to 35°C) higher than the surrounding air temperature. High temperature specialty resins and adhesives must also be used for repairs in areas near exhaust pipes or other high temperature areas. Current corrosion also needs to be considered, for example, carbon fiber in direct contact with the aluminum layer will show rapid deterioration, especially when repairing with bolts, and the fasteners used need to be carefully selected. The formation of direct current between two materials at opposite poles of the current will lead to galvanic corrosion, but the corrosion will only occur in the metal layer, not in the carbon fiber, and the wet environment will make this corrosion worse. Another way to resist current corrosion is to isolate the carbon fiber from the aluminum with a demarcation layer, which can be made of glass fiber, adhesive flexible film or other non-electrically resistant materials. Surface Pretreatment for Adhesive Repair Although bolt repair is sometimes used on composite structures, a common solution for durability repair is a washout mitre adhesive repair, which effectively maintains the strength and stiffness of the material while ensuring a smooth surface layer in an aerodynamic environment, which can also be available if radar recluse performance is required. The durability of an adhesive repair is determined by the performance of the adhesive used between the repair patch and the surface layer of the repair site, and the variables that primarily affect the performance of the adhesive include proper selection, adhesive processing, uniform bond thickness (neither too thin nor too thick), and surface prep of the bonded area.

In the 1950s, the Fokker F27 twin-turboprop airliner used carbolic acid adhesives to bond between aluminum surfaces, and at the 15th annual meeting of the International Consortium for Flight Resistance Technology and Engineering in Amsterdam, the Netherlands, November 4-6, 1985, R.J. Schliekelmann, a durability bonding specialist at Schiphol Fokker in the Netherlands, gave a presentation. Schliekelmann made this point in his presentation. The use of a press heater is intended for adhesive repairs under elevated temperatures and pressures. The structural properties of the repaired parts were good and the adhesive repair did not diminish with changes in temperature and humidity, and many of the repair results lasted for decades. In the 1960s, the aerospace industry developed epoxy adhesives that were expected to achieve similarly satisfactory results, but the adhesively repaired joints subsequently deteriorated for the first time in the 1970s due to high temperature/humidity conditions, which was a major disappointment. Over the next 20 years, countless studies have established what is now widely accepted as a fact: surface pre-treatment processes are the root cause of bond durability differences of days and decades. The goal of the field's efforts is to achieve effective and robust adhesive repair, where the cause of repair failure exists only in the adhesive itself, such as common glue failure, adhesive peeling from the repair patch or repair surface, i.e., adhesive failure. It is important to note that although research in the field of adhesive joint repair has focused on adhesive failure, in practice there is still a high probability of adhesive failure without successful adhesive repair. For example, if the adhesive has not been adequately treated, this may be due to the fact that the proper treatment temperature has not been reached. The cause of adhesive joint failure is mainly in the adhesive, which will come off without proper treatment, and thus the cause of failure is still in itself. Therefore, if the adhesive is properly treated and gives full play to its performance in the case of glue failure, so that the adhesive failure is often due to the adhesive repair surface does not achieve sufficient bonding caused by the focus directly on the surface pretreatment link.

We are a professional supplier of carbon fiber rollers and have been committed to provide customers with satisfactory products, if you are interested in this, please contact Coreco Co.

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Carbon Fiber Rollers Are Hotter Than The Heat Scorching

Carbon fiber rollers are hotter than the heat scorching

Fiber roll than heat scorching, first of all, hiding in a warm house, can not enjoy the autumn scorching, still save money warm life grade. Carbon fiber roller than heat recent days also house surface of the cold air, the warm operation of the house outside wear a great use. The warm operation of the premises is also the same warm material that does not open. Carbon fiber roll than heat is also the same and this warm material of the same, thus the same universal based on the warm material, carbon fiber roll along with and so on all kinds of geographical areas in the warmth of the hing stay not open aluminosilicate fiber board than heat this, carbon fiber roll than heat official is also the same with you all together published under carbon fiber roll than heat:.

Carbon fiber rolls than heat official citation: carbon fiber rolls than heat in the situation also need to pay attention to point its quality, thus, carbon fiber rolls for the way it is still very easy to ensure that may producers manufacturing production processing production encounter ever price, how to do? Carbon fiber roll this time seat small to detach you read out off.

Carbon fiber roll than heat is also equally all know a high temperature resistant, seismic majestic, prolonged really, fire-resistant wear-resistant, warm operation thus good up a silicate aluminum thing, carbon fiber roll mainly also also equally reason application in aviation region, high temperature building region is to others' contrast stuff level high sales. The carbon fiber roll than heat used in the official and other producers manufacturing production processing produced a large amount of needle-punch plate above must be good to save up the inventory, and who things of the tearing type, in order to give the brand friends hope price of things. Carbon fiber roll than heat almost generally will take the official inventory stacks inside, the difficulty is three or four many different things compared to the level of the stacks situation is basically different. Carbon fiber rolls than heat mainly also also likewise aluminosilicate, even though with certain anti-corrosion operation, the difficulty is not want to save money and strong alkali strong acid mixed in once stock to, all guide needle punch plate failure. Carbon fiber roll than heat secondly also the same stack is not able to big up the wet and everyone isolated and so on came to be the light of the sun, each other are not beneficial to the needle punch plate stored to, carbon fiber roll are guide things to occur broken and smelly, every day will update a lot out of each other's quite situation always to avoid. The carbon fiber roll than the heat under the concern is good to complete its packaging, good to complete the dustproof process.

We are a professional manufacturer of carbon fiber rolls, and have been committed to providing customers with quality products, if you are interested in this, please contact Coreco Co.

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#We are a professional supplier of carbon fiber rollers and have been committed to providing our customers with high quality products. If you #please contact Coreco Ltd.

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We are professional carbon fiber experts, and we have been committed to providing customers with high quality products, if you are interested in carbon fiber products, please contact Coreco Ltd.

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Classification And Properties Of Carbon Fiber Roller Materials

Classification of Carbon Fiber Roller Material

There are many types of insulation materials, which can be divided into three categories: gas, liquid and solid. Commonly used gas insulation materials are air, nitrogen, sulfur hexafluoride insulation PC film, etc.. Liquid insulating materials are mainly mineral insulating oil, synthetic insulating oil (silicone oil, dodecylbenzene, polyisobutylene, isopropyl biphenyl, diaryl ethane, etc.) two categories. Solid insulating materials can be divided into two categories: organic and inorganic. Organic solid insulating materials include insulating paint, insulating glue, insulating paper, insulating fiber products, plastics, rubber, lacquer cloth lacquer tube and insulating impregnated fiber products, electrical film, composite products and adhesive tape, electrical laminated products, etc.

Inorganic solid insulating materials mainly include mica, glass, ceramics and their products. In contrast, the variety of solid insulating materials is also important. Different electrical equipment on the insulation material performance requirements of each focus. High-voltage electrical devices such as high-voltage motors, high-voltage cables with insulation materials require high breakdown strength and low dielectric loss. Low-voltage electrical appliances are mechanical strength, elongation at break, thermal class, etc. as the main requirements. The macroscopic properties of insulating materials such as electrical properties, thermal properties, mechanical properties, chemical resistance, climate change resistance, corrosion resistance, etc. are closely related to their chemical composition and molecular structure. Inorganic solid insulating materials are mainly composed of silicon, boron and a variety of metal oxides, mainly ionic structure, mainly characterized by high heat resistance, the working temperature is generally greater than 180 ℃, good stability, atmospheric aging resistance, chemical resistance and long-term aging performance under the action of electric field; but high brittleness, low impact strength, high pressure resistance and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is usually lower than that of inorganic materials. Materials containing aromatic rings, heterocycles and elements such as silicon, titanium and fluorine have higher heat resistance than general linear polymer materials.

Properties of Carbon Fiber Drum Materials

The important factors affecting the dielectric properties of insulating materials are the strength of molecular polarity and the content of polar components. The dielectric constant and dielectric loss of polar materials are higher than those of non-polar materials, and they can easily adsorb impurity ions to increase the conductivity and reduce their dielectric properties. Therefore, in the manufacturing process of insulation materials to pay attention to clean, prevent pollution. Capacitor dielectric requires a high dielectric constant to improve its specific characteristics.

We are a professional supplier of carbon fiber rollers and have been committed to providing our customers with high quality products. If you are interested in carbon fiber rollers, please contact Coreco Ltd.

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The Process Of Carbon Fiber Reinforcement And Strengthening

The process of carbon fiber reinforcement and strengthening

1. Determine the scope of carbon fiber roller paste according to the design for substrate treatment

(1) The surface of the concrete member will be cleared of remnants, damage and carbonized layer parts to reach the dense part of the structure. Check whether the exposed reinforcement has rust and corrosion and carry out the necessary treatment. Repair and restore the defective parts of the members after chiseling, cleaning and exposed reinforcement.

(2) Crack repair. Cracks with a width of less than 0.2mm are sealed by surface painting with epoxy resin; cracks larger than 0.2mm are grouted with epoxy resin.

(3) Grind the projecting part of the surface of the member (segment difference of the template, etc.) smoothly, and repair the segment difference as smoothly as possible. Use a grinder to grind the corners into rounded corners with a radius greater than 30mm.

(4) Clean the surface of the polished components and make them fully dry.

2. Primer coating (primer coating has strong permeability and can penetrate into the concrete surface)

(1)Put the main agent and curing agent of primer coating into the container after weighing accurately according to the specified proportion, mix evenly with a stirrer, and the amount of one mixing should be used up within the usable time.

(2)Use roller brush to paint the primer evenly.

(3)After curing, use sandpaper to polish the surface when there is a raised part.

(4)When the temperature is less than 5℃, the relative humidity is more than 85, the moisture content of the concrete surface is more than 8%, and there is a possibility of condensation without reliable guarantee measures, no construction is allowed.

3. Repair of surface defects of components by epoxy structural adhesive

(1) The depressed part of the surface of the component shall be filled with epoxy structural adhesive and repaired until the surface is smooth.

(2) The inner corner (segment difference, arching, etc.) should be filled with epoxy structural adhesive to make it smooth.

4. Paste carbon fiber

(1) In order to prevent carbon fiber damage, in the carbon fiber roll transport, storage, cutting and pasting process, bending is strictly prohibited.

(2) Carbon fiber joints must be lapped more than 10cm, laterally without lap.

(3)Mix and match resin main agent and curing agent according to the prescribed ratio, and evenly coat the bonding resin with roller brush, called under coating.

(4) Paste carbon fiber, between the carbon fiber sheet and resin as far as possible not to have air, available roller along the fiber direction in the carbon fiber on this rolling, so that the resin penetrate into the carbon fiber.

5. Maintenance

After pasting the carbon fiber sheet, it needs to be naturally maintained for 24h to reach the initial curing, and to ensure that the curing period is not disturbed.

6. Painting

According to the need to strengthen the surface of the reinforcing member after the resin curing, painting refractory coating and color.

We are professional carbon fiber experts, and we have been committed to providing customers with high quality products, if you are interested in carbon fiber products, please contact Coreco Ltd.