Aramid 1313 was first successfully developed by DuPont in the United States, and industrialized production was realized in 1967, and the product was registered as Nomex® (Nomex). This is a soft, white, slender, fluffy and lustrous fiber. Its appearance is the same as that of ordinary chemical fibers, but it has extraordinary “extraordinary functions”:
Durable thermal stability.
The most prominent feature of aramid 1313 is its high temperature resistance, which can be used for a long time at 220℃ without aging. The effectiveness of its electrical and mechanical properties can be maintained for 10 years, and its dimensional stability is excellent. The thermal shrinkage rate of about 1% is only 1%, and it will not shrink, embrittle, soften or melt when exposed to a high temperature of 300°C for a short time. , such a high thermal stability is unique among the current organic temperature-resistant fibers.
Outstanding flame retardancy.
We know that the percentage of oxygen volume required for a material to burn in air is called the limiting oxygen index. The larger the limiting oxygen index, the better its flame retardant performance. Usually, the oxygen content in the air is 21%, and the limiting oxygen index of aramid 1313 is greater than 28%. This inherent characteristic derived from its own molecular structure makes aramid 1313 permanently flame retardant, so it has the reputation of “fireproof fiber”.
Excellent electrical insulation.
Aramid 1313 has a very low dielectric constant, and its inherent dielectric strength enables it to maintain excellent electrical insulation under high temperature, low temperature, and high humidity conditions. ㎜, is recognized as the best insulating material in the world.
Outstanding chemical stability.
Aramid 1313 is a linear macromolecule composed of amide bonds connecting aryl groups. In its crystal, hydrogen bonds are arranged in two planes to form a three-dimensional structure. This strong hydrogen bond makes its chemical structure extremely stable and can be Resistant to most highly concentrated inorganic acids and other chemicals, hydrolysis and steam corrosion.
Excellent mechanical properties.
Aramid 1313 is a flexible polymer material with low stiffness and high elongation, making it the same spinnability as ordinary fibers. It can be processed into various fabrics or non-woven fabrics by conventional spinning machines, and it is wear-resistant and tear-resistant. very broad.
Super radiation resistance.
Aramid 1313 has excellent resistance to α, β, χ rays and ultraviolet radiation. With 50Kv X-ray radiation for 100 hours, the fiber strength remains 73% of the original, and the polyester or nylon at this time has already become powder. The unique and stable chemical structure endows aramid 1313 with excellent properties. Through the comprehensive utilization of these properties, a series of new functions and new products are continuously developed, and the application fields are getting wider and wider, and the popularity is getting higher and higher.
Special protective clothing.
Aramid 1313 fabric does not burn, drip, melt and smoke when it encounters fire, and has excellent fireproof effect. Especially when encountering a high temperature of 900-1500 ℃, the cloth surface will be rapidly carbonized and thickened, forming a unique thermal insulation barrier to protect the wearer from escaping. If a small amount of antistatic fiber or aramid 1414 is added, it can effectively prevent the fabric from bursting and avoid the hazards of lightning arc, electric arc, static electricity, flame and so on. Aramid 1313 non-ferrous fibers can be used to make various special protective clothing such as flight suits, chemical-proof combat suits, fire fighting suits, furnace overalls, electric welding overalls, pressure equalizing suits, radiation-proof overalls, chemical protective suits, high-voltage shielding suits, etc. Aviation, aerospace, military uniforms, fire protection, petrochemical, electrical, gas, metallurgy, racing and many other fields. In addition, in developed countries, aramid fabrics are also widely used as hotel textiles, life-saving passages, household fire-resistant decorations, ironing board coverings, kitchen gloves, and flame-retardant pajamas to protect the elderly and children.
High temperature filter material.
The high temperature resistance, dimensional stability and chemical resistance of aramid 1313 make it dominant in the field of high temperature filter media. Aramid filter media are widely used in chemical plants, thermal power plants, carbon black plants, cement plants, lime plants, coking plants, smelters, asphalt plants, paint plants, as well as high-temperature flues and hot air in electric arc furnaces, oil boilers, and incinerators Filtration can not only effectively remove dust, but also resist the chemical attack of harmful fumes, and at the same time facilitate the recovery of precious metals.
Honeycomb construction material.
Aramid 1313 structural material paper can be used to make biomimetic multi-layer honeycomb structural board, which has outstanding strength/weight ratio and rigidity/weight ratio (about 9 times that of steel), light weight, impact resistance, flame resistance, insulation, and durability. It has the characteristics of corrosion resistance, aging resistance and good electromagnetic wave permeability. It is suitable for the production of broadband wave-transmitting materials and large rigid secondary stress structural components on aircraft, missiles and satellites (such as wings, fairings, cabin linings, doors, etc.). Floor, cargo hold and partition wall, etc.), also suitable for the production of yachts, racing boats, high-speed trains and other high-performance sandwich structures.
Post time: Apr-29-2022