What is aramid carbon fiber and what material is aramid fiber

Aramid fibers. It is also a chemical synthetic material with high scientific and technological content, which has the characteristics of high strength, high temperature resistance, corrosion resistance, light and heavy. and carbon fiber.

Similarly, aramid is also one of the key materials in the national defense industry, and has a large number of applications in bulletproof equipment and flight equipment.

Carbon fiber, glass fiber.

and aramid fiber in the tensile strength value of the three materials, carbon fiber is the strongest, glass fiber is the weakest; In terms of temperature resistance, aramid has the worst heat resistance, and carbon fiber is the strongest; **In terms of glass fiber, aramid is the most expensive, and special carbon fiber cannot be purchased; Aramid fibers have the best toughness, while carbon fibers and glass fibers are too brittle; In terms of weight, aramid is the lightest, and glass fiber is the heaviest. Aramid and glass fiber insulation, carbon fiber conductive, carbon fiber can withstand long-term static load, aramid has excellent protection against local impacts.

Aramid fiber is a new type of high-tech synthetic fiber material. It has excellent properties such as ultra-high strength, high modulus and high temperature resistance, acid and alkali resistance, light weight, etc., and its strength is 5 6 times that of steel wire, 2 3 times that of steel wire or glass fiber, and 2 times that of steel wire.

The weight is only about 1 5 of the steel wire, and at a temperature of 560 degrees, it does not decompose and does not melt. It has good insulation and anti-aging properties, and has a long life cycle. The discovery of aramid is considered to be a very important historical process in the field of materials.

Bulletproof fibers. Almost simultaneously with the invention of Kevlar 1313, DuPont developed another high-performance synthetic fiber, Kevlar 1414, in the late sixties, which was first introduced in 1972 under the name Kevlar.

Aramid 1414 has a golden yellow appearance, resembling shiny metallic wires, and is a liquid crystal polymer composed of rigid long molecules. Due to the high orientation of the molecular chains along the length and the extremely strong interchain bonding, the fibers are endowed with unprecedented high strength, high modulus and high temperature resistance.

The discovery of Kevlar 1414 is considered an important milestone in the development of the materials community. Aramid 1414 has extremely high strength, more than 28 grams, 5 6 times that of high-quality steel, 2 3 times the modulus of steel or fiberglass, 2 times the toughness of steel, and only 1 5 times the weight of steel. (The strength and toughness of aramid 1414 also makes it extremely difficult to cut and process, requiring expensive special tools).

Aramid fibers. Material ** ratioCarbon fiberSlightly higher.

High-strength high-modulus fiber with a carbon content of more than 90%. High temperature resistance ranks first among all chemical fibers. with acrylic and viscose.

It is made of raw materials and carbonized by high-temperature oxidation. It is an excellent material for making high-tech equipment such as aerospace and aviation.

made of the element carbon. composed of a special fiber. It has the characteristics of high temperature resistance, friction resistance, electrical conductivity, thermal conductivity and corrosion resistance, and the shape is fibrous, soft, and can be processed into various fabrics, because of its graphite microcrystalline structure along the fiber axis, so it has high strength and modulus along the fiber axis.

Carbon fiber has a low density and therefore has a high specific strength and specific modulus.

The main use of carbon fiber is as a reinforcing material and composite with resin, metal, pottery, porcelain and charcoal to make advanced composite materials. The specific strength and specific modulus of carbon fiber reinforced epoxy resin composites are the highest among existing engineering materials.

Kevlar 1313 was born in the late 60s of the 20th century, during the Cold War.

The product of the arms race was initially used as a material for aerospace science and technology and an important strategic material.

And the secrecy is not revealed, so it adds a lot of mystery. After the end of the Cold War, aramid began to be used in the field of people's livelihood as a high-tech fiber material, and gradually revealed Lushan.

True face. There are two varieties with the most practical value in aramid, one is meta-aramid, which is destined for aramid 1313 in China; The second is para-aramid, which is destined for aramid 1414 in our country. The chemical structure of the two is similar, but the performance is very different, and the application field is different.

Aramid 1313 has become a kind of high-quality functional fiber due to its excellent high temperature insulation, and the excellent mechanical properties of aramid 1414 make it occupy an important core position in high-performance fibers.

The most widely used in many fields is aramid 1313. This is a soft, white, slender and fluffy, shiny fiber, the appearance is no different from ordinary chemical fiber, but it combines the strengths of all in one, and has extraordinary "special functions".

Aramid fiber production plants include: Yanchun Zhaotai Tai do Zhaokaihe, Zhonglan Chenguang, Guangdong Caiyan, Hebei Silicon Valley, Henan, etc.

Introduction to aramid fibersAramid fibers generally refer to aramid, which is a new type of high-tech synthetic fiber, which has ultra-high strength, high modulus and high temperature resistance, acid and alkali resistance, light weight, insulation, anti-aging, long life cycle and other excellent chain energy. As a high-tech fiber material, aramid fiber is widely used in aerospace, electromechanical, construction, automobiles, sporting goods and other aspects of the national economy.

The full name of aramid fiber is aliphatic acrylic resin fiber, which refers to the long chain of more than 85% amide bonds immediately connected to the benzene ring to produce acrylic resin fiber.

Joining amide bonds are compounds of aromatic rings or aromatic rings, which have outstanding properties such as flame retardancy, heat resistance, high toughness, high toughness, and insulation. It is a new type of special fiber material. There are two types of aramid that have been sold on the market for a wide range of commercial applications and manufactures, namely meta-aramid and para-aramid.

Uses of aramid fibers.

1. Protective materials.

Arasulfone has excellent high temperature resistance and flame retardant properties, making it widely used in the field of high temperature protection, such as firefighting clothing, firefighting clothing, fireproof clothing, furnace workwear, welding workwear, fireproof curtains, fireproof gloves; production of radiation-resistant overalls in the field of radiation protection; Chemical protective clothing for chemical applications. In addition, it can also be used to prepare spacesuits, special military uniforms, military tarpaulins, etc.

2. Filter material.

Aramid is particularly suitable for the preparation of high-temperature resistant filter media, such as flue gas dust filter bags.

3. Electrical insulating materials.

Arasulfone fibers can be used in applications such as motor insulation, transformer insulation, anti-corona insulating boards, insulating non-woven fabrics, flakes and felts, printed circuit boards, etc. In addition, arasulfone can also be used for honeycomb structural materials, aircraft sandwich materials, ship sandwich materials, sound insulation and self-extinguishing materials, parapet materials, composite materials, etc.

Aramid fiber is a new type of high-tech synthetic Shenheqing fiber.

The full name of aramid fiber is "aromatic polyamide fiber wide grip", which means that more than 85% of the amide bonds are directly connected to the benzene ring. Aramid fiber is suitable for body armor, helmets, aerospace materials, sports materials, tire frame materials, conveyor belt materials, etc., with insulation, high temperature resistance, anti-aging and other properties.

The characteristics of aramid fibers are:

1. Good mechanical properties.

Meta-aramid is a kind of flexible polymer, the breaking strength is higher than that of ordinary polyester, cotton, nylon, etc., the elongation is larger, the feel is soft, the spinnability is good, it can be produced into staple fibers and filaments of different titers and lengths, and it is made into fabrics and non-woven fabrics in general textile machinery, and after finishing, it can meet the requirements of protective clothing in different fields.

2. Excellent flame retardant and heat resistance.

Meta-aramid has a limiting oxygen index (LOI) greater than 28, so it does not continue to burn when it is away from the flame. The flame retardant properties of Mystar meta-aramid are determined by its own chemical structure, so it is a flame retardant fiber that will not lose its flame retardant properties due to the time of use and the number of washes.

Newstar meta-aramid has good thermal stability, can be used continuously under the condition of 205, and can still maintain high strength under the condition of high temperature greater than 205. Newstar meta-aramid has a high decomposition temperature, and will not melt and drop under high temperature conditions, and carbonization will begin when the temperature is greater than 370.

3. Stable chemical properties.

Meta-aramid has excellent resistance to most chemicals, can resist most high concentrations of inorganic acids, and has good alkali resistance at room temperature.