UHMWPE fiber, also known as high-strength and high modulus polyethylene fiber, is currently the fiber with the highest specific strength and specific modulus in the world, spun from polyethylene with a molecular weight of 1 million to 5 million.
The three major high-performance fibers in the world today are aramid, carbon fiber, and UHMWPE fiber. Currently, due to technical issues, aramid is only produced in small quantities in China; Carbon fiber is still in the experimental and primary production stage, and the product can only be applied in fields such as wear-resistant fillers; Since the breakthrough of key production technologies in 1994, UHMWPE fibers have formed multiple industrial production bases for UHMWPE fibers in China.
Performance characteristics
1. High specific strength and high specific modulus. The specific strength is more than ten times that of steel wires with the same cross-section, and the specific modulus is only second to high-grade carbon fibers.
2. The fiber density is low, ranging from 0.97 to 0.98g/cm3, and can float on the water surface.
3. Low fracture elongation, high fracture work, and strong energy absorption ability, thus possessing outstanding impact resistance and cutting resistance.
4. Anti UV radiation, anti neutron, and γ Radiation has high energy absorption, low dielectric constant, and high electromagnetic wave transmittance.
5. Chemical corrosion resistance, wear resistance, and long flexural life.
physical property
Density: 0.97-0.98g/cm3. It has a lower density than water and can float on it.
Strength: 2.8-4N/tex.
Modulus: 91-140N/tex.
Elongation: 3.5% to 3.7%.
The impact absorption energy is nearly twice that of aromatic amide fibers, with good wear resistance and low friction coefficient, but the melting point under stress is only 145-160 ℃.