Flame-retardant fiber means that the fiber only produces smoldering in the flame, the fiber itself does not have a flame, and the smoldering self-extinguishes after leaving the flame. Flame-retardant fibers are widely used in clothing, home, decoration, non-woven fabrics and fillers.
Here we list all the flame-retardant fibers that are common in our lives. The following flame retardant fibers are widely used in various industries.
1. Aramid 1313
The limit oxygen index of aramid 1313 is greater than 28%, and it is a flame-retardant fiber. At the same time, it also has a long-term thermal stability and dimensional stability, can be used at 220 °C temperature for a long time without aging, the thermal shrinkage at a temperature of about 250 °C is only 1%, a short time exposure to 300 °C temperature It does not shrink, embrittle, soften, or melt. It begins to decompose at high temperatures exceeding 370°C and does not carbonize until 400°C.
2. Polyimide fiber
The limiting oxygen index of polyimide fibers is generally between 35% and 75%, and the smoke generation rate is low, which is a self-extinguishing material. In addition, the polyimide fiber also has a high thermal decomposition temperature, and the initial decomposition temperature of the wholly aromatic polyimide fiber is about 500°C.
3. Basalt fiber
Basalt fiber is an inorganic fiber and has the advantages of incombustibility, temperature resistance (-269°C to 700°C), no toxic gas discharge, good heat insulation, no melting or dripping, high strength, no heat shrinkage, and the like.
Basalt fiber has been successfully used in automobile muffler, reinforced asphalt pavement, energy saving and thermal insulation of exterior wall building and sports leisure products.
The development focus of China's basalt fiber products is divided into two categories, including the development of pure natural basalt fibers and doped and modified high-temperature, alkali-resistant basalt fibers.
4. Polyphenylene sulfide fiber
Polyphenylene sulfide fiber limit oxygen index of up to 34% to 35%, the melting point of 285 °C, higher than the current industrial production of other melt-spun fibers, dimensional stability.
5. Aryl sulfone fibers
The sulfonyl sulfone fiber is a high-temperature fiber independently researched by China. Except that the strength is slightly lower, other properties are similar to aramid, but it is significantly superior to aramid in flame resistance and thermal oxygen aging. The limiting oxygen index of the aryl sulfone fiber is about 33%. After heating at 300°C in hot air for 100 hours, the strength loss is less than 5%.
The aryl sulfone fibers can be used in protective products, electrical insulation materials, honeycomb structure materials, friction sealing materials, transfer printing blankets, and the like.
6. Polytetrafluoroethylene fiber
Polytetrafluoroethylene fiber is one of the earliest varieties developed in flame-retardant high-temperature fiber. Its limiting oxygen index is about 95%, and can be used at 250°C for a long time.
7. Flame retardant nylon
The unmodified nylon is poor in flame retardancy and will dribble during combustion and is a flammable material. Therefore, when nylon fiber is used as a flame retardant material, it must undergo flame retardant modification. At present, flame-retardant modified flame-retardant nylon is mainly divided into two types to enhance flame retardant nylon and halogen-free flame retardant nylon.
The Aramid IIIA inherent flame retardant fabric produced by Xinxiang Weis Textiles&Garments Co., Ltd. is composed of 93% 1313 meta aramid, 5% 1414 para aramid and 2% cabon fiber. With high temperature resistance, flame resistance, anti-static properties, and good mechanical properties, it can be used for personal protection in shipyards, metallurgy, gas, machinery manufacturing plants, gas stations / oil and gas fields / mines and other high temperature working environment with fire hazards.
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