Carbon fiber has a series of excellent properties such as high strength, high modulus, corrosion resistance, and small thermal expansion coefficient, so its application fields are very wide. In order to meet customer needs, carbon fiber manufacturers have developed a variety of fibers for different purposes to take full advantage of the excellent characteristics of carbon fiber. This article will briefly introduce 10 application methods of carbon fiber products.
1. Continuous long fiber
Product features: The most common product form of carbon fiber manufacturers. Bundles are composed of thousands of monofilaments. They are divided into three types according to the twisting method: NT (Never Twisted, untwisted), UT (Untwisted, untwisted), TT or ST (Twisted, twisted), NT is the most commonly used carbon fiber. For twisted carbon fiber, according to the twist direction, it can be divided into S twisted yarn and Z twisted yarn (as shown in the figure below).
Typical applications: mainly used for composite materials such as CFRP, CFRTP, or C / C composite materials. Applications include aircraft / aerospace equipment, sporting goods, and industrial equipment parts.
2. Staple fiber yarn
Product features: short fiber yarn, a yarn spun by using short carbon fiber, such as general-purpose pitch-based carbon fiber, usually in the form of short fiber.
Typical applications: thermal insulation materials, anti-friction materials, C / C composite parts, etc.
3. Carbon fiber fabric
Product features: Continuous carbon fiber or carbon fiber short yarn is woven. According to the weaving method, carbon fiber fabric can be divided into woven fabric, knitted fabric and non-woven fabric. Currently, carbon fiber fabric is usually woven fabric.
Typical applications: Same as continuous carbon fiber, mainly used for composite materials such as CFRP, CFRTP or C / C composite materials. Applications include aircraft / aerospace equipment, sporting goods and industrial equipment parts.
4. Carbon fiber braid
Product characteristics: It belongs to a kind of carbon fiber fabric, which is also woven from continuous carbon fiber or carbon fiber short yarn.
Typical applications: mainly used for resin-based reinforced materials, especially suitable for the production and processing of tubular products.
5. Short-cut carbon fiber
Cut according to customer needs.
Typical applications: usually used as a mixture of plastics, resins, cements, etc., mixed into the matrix can improve the mechanical properties, wear resistance, electrical conductivity and heat resistance; in recent years, 3D printed carbon fiber composite materials are mostly reinforced with short-cut carbon fibers Mainly.
6. Grinding carbon fiber
Product characteristics: Because carbon fiber is a brittle material, it can be prepared into a powdered carbon fiber material after grinding, which is ground carbon fiber.
Typical applications: similar to chopped carbon fiber, but rarely used in the field of cement reinforcement; usually used as a mixture of plastics, resins, rubbers, etc. to improve the mechanical properties, wear resistance, electrical conductivity and heat resistance of the matrix.
7. Carbon fiber felt
Product features: The main form is felt or mat. First, short fibers are layered by mechanical carding and other methods, and then prepared by needle punching; also known as carbon fiber nonwoven fabric, which belongs to a type of carbon fiber braid.
Typical applications: thermal insulation materials, molded thermal insulation material base materials, heat-resistant protective layers and corrosion-resistant base materials
8. Carbon fiber paper
Product characteristics: It is made of carbon fiber as raw material and is made by dry or wet papermaking process.
Typical applications: anti-static plates, electrodes, speaker cones and heating plates; the hotspot applications in recent years are the positive electrode materials for new energy automotive batteries.
9. Carbon fiber prepreg
Product features: The semi-hardened intermediate material made of carbon fiber impregnated thermosetting resin has excellent mechanical properties and wide application; see more composite material process articles. Log in to the composite material application technology network. The following picture shows the 300mm and 600mm wide prepregs produced by processing M55J grade carbon fiber made by Ningbo Materials Institute.
Typical applications: aircraft / aerospace equipment, sporting goods and industrial equipment that are in urgent need of light weight and high performance
10. Carbon fiber composite
Product features: Injection molding material made of thermoplastic or thermosetting resin mixed with carbon fiber, the mixture is made of various additives and chopped fiber, and then composite process.
Typical applications: Relying on the advantages of excellent conductivity, high rigidity and light weight of materials, it is mainly used for office automation equipment shells and other products.