Identify ways of ultra-high molecular weight polyethylene

by:SanTong     2021-02-05
Ultra-high molecular weight polyethylene ( 超高分子量。 PE) Is a kind of linear structure of thermoplastic engineering plastics with excellent comprehensive performance. Ultra-high molecular weight polyethylene pipes in China in 2001 by the Ministry of Science and Technology the KeJi word ( 2000). No. 056 document listed as national key scientific and technological achievements promotion plan, chemical new material, new products. The state planning commission Ministry of Science and Technology will ultra-high molecular weight polyethylene pipe as the current priority to the development of high-tech industry in key areas.     Ultra-high molecular weight polyethylene ( 超高分子量。 PE) Fiber is the third generation of special fiber in the world today, the intensity of up to 30. 8 cn/dtex, specific strength is the highest in the chemical fiber, and has good abrasion resistance, impact resistance, corrosion resistance, light resistance and other excellent properties. It can be directly made into rope, rope, fishing nets and all kinds of fabrics: bullet-proof vest and clothes, prevent cutting gloves, etc. , which the bulletproof effect is better than that of aramid fiber. International has ultra-high molecular weight polyethylene ( 超高分子量。 PE) Different denier fibers woven rope, instead of traditional steel rope and synthetic fiber rope, etc. Ultra-high molecular weight polyethylene ( 超高分子量。 PE) Fiber composite materials have been used as a militarily armor weapon, radar's protective shell of shell cover, helmets, etc. ; Sports goods has been made on the bowstring, sled and water skiing board, etc.     Ultra-high molecular weight polyethylene is a kind of high molecular compound, it is difficult to machining, and it has strong wear resistance, self-lubrication, high strength, stable chemical properties, ageing resistance is strong, so when discern between true and false polymer polyethylene, it is important to note that several characteristics of it, specific discrimination method is as follows: & have spent   1. Weighing principle: the proportion of pure made of ultra-high molecular weight polyethylene products in 0. 93 - 0. 95, density is small, can float on the water. If it is not the pure polyethylene material, will sink to the bottom.     2. Temperature measurement: the pure ultra-high molecular weight polyethylene products, in 200 degrees Celsius is not melting, not deformation, but will soften. If it is not the pure ultra-high molecular weight polyethylene material in 200 degrees Celsius is there will be a deformation.     3. Visual methods: real ultra-high molecular weight polyethylene smooth, uniform, smooth surface and edge density is very uniform, if not the pure colour and lustre is dim and uneven density polyethylene materials.     4. Edge test method: the pure ultra-high molecular weight polyethylene flanging end face round, uniform, smooth, if not the pure polyethylene material flanging end face has a crack, slag and flanging occurs after heating off phenomenon.
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