What is the characteristics of the ultra-high molecular weight polyethylene fiber?

by:SanTong     2021-02-05
Ultra-high molecular weight polyethylene fiber, has high strength, resistance to chemical corrosion resistance, abrasion resistance and insulation are fine. To high strength Marine ropes, bulletproof vests, bulletproof helmets, etc. Ultra-high molecular weight polyethylene fiber raw materials only powder and ultra-high molecular weight polyethylene is unable to squeeze out granulation. To beg of powdery materials mainly include: used for gel spinning of ultra-high molecular weight polyethylene should be moderate molecular weight, low molecular weight easy to machining, but reduce the interaction between the molecular chain, fiber mechanical properties, also lower the creep properties of the fiber, high molecular weight partially due to increase the viscosity of the solution for processing; So the molecular weight is in commonly 3 million or so, after. its degradation to around 1. 5 million. Powder particle size: small and uniform requirements, easy to dissolve what is the distinguishing feature of ultra-high molecular weight polyethylene fiber? 1, high specific strength, high specific modulus. Strength of more than ten times that of the same wire, after super than modulus carbon fiber. 2, low fiber density, the density is 0. 97 - 0. 98 g/cm after, can float on the surface of the water. 3, low elongation at break and breaking work, have a strong ability to absorb energy, thus has outstanding impact resistance and cutting resistance. 4, resistance to ultraviolet radiation, neutron and gamma rays, higher than the energy absorption, low dielectric constant, the electromagnetic wave transmission rate is high. 5, chemical corrosion resistance, abrasion resistance, has a long flex life.
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