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dry 货: how to improve/increase plastics scratch resistant, wear resistance
01, selection combined 适 基体 resin
usually ultra-high molecular weight polyethylene (PE) (UHWMPE) is most wear resistant plastics 之一, selection UHWMPE can relatively is simple improve/increase material wear resistance can. another, high crystallization, degree high plastics comparison wear resistant, hardness high plastics more wear resistant, similar ring this type of large separation formed plastics comparison wear resistant, ratio polystyrene (PS). in polypropylene (PP) (PP) modified in, usually using/adopting polyolefin elastomer (POE), ternary 乙丙橡胶(EPDM), thermoplastic property 动态硫化橡胶(TPV)(如动态硫化PP/EPDM) toughened PP, elastomer add generally 会导致 resistant scratch property can decline, therefore selection combined elastomer non important, it between resistant scratch property can comparison 顺序如 lower: TPV>EPDM>POE. 02, using/adopting wear resistance good filler (1)二硫化钼 二硫化钼 is main/primary used for nylon plastics types wear resistant additives. 二硫化钼 function has crystallization agent, use increase nylon crystallization degree, make nylon material generate relatively hard and relatively wear resistant surface. 二硫化钼 for metal has very high hydrophilic and force, 一旦吸附 in metal surface, 二硫化钼 separation 子会填塞 metal surface upper use micro can 看见 毛 fine 孔, make metal surface more light slip, make 二硫化钼 formed is 一 理想 wear resistant additives used for nylon and metal versus abrasion scratch combined. (2)石墨 石墨 chemical structure is 一 独特 格子状 structure, 此独特 chemical structure make separation in to very small scratch force very easy versus sliding, this type of wear resistant features in has water ring in especially important, 因而石墨 as is types wear resistant additives used for very more water in made parts, water outer housing/shell, 轮叶(impeller) and 关封(Value seals). (3) glass fiber glass fiber can make polymer/macromolecule formed solid machine property combined, therefore glass fiber can improve/increase thermoplastic property plastics structure overall property improvement wear resistance. glass fiber provide strong/high can improve/increase plastics hot property and hot deformation property, can significantly improvement plastics resistant negative and wear resistant can force. (4) carbon fiber and glass fiber versus 似, carbon fiber can large improvement material structure overall property, resistant negative and wear resistant can force. and glass fiber different is carbon fiber is types relatively soft loss property relatively low fiber, carbon fiber 不会刮伤 and its scratch iron or 钢质 摩 scratch surface. (5) aromatic polyamide (PA) fiber aromatic polyamide (PA) fiber is wear resistant additives 之一, and glass fiber and carbon fiber different, it is most soft and most loss property fiber, features is aromatic polyamide (PA) fiber in wear resistant application main/primary advantages. 03, 添 add combined wear resistant additives (1) PTFE (PTFE) PTFE friction coefficient very low, in scratch process in PTFE separation in parts surface formed lubricated film. PTFE in scratch force lower has very good lubricated property and wear resistance can, in high negative application in, PTFE is most wear resistant additives. this high negative application liquid pressure active ring 封, force gasket. PTFE content in non crystallization property plastics in generally is 15%, in crystallization property plastics in generally is 20%. (2) poly silicon oxygen 烷 poly silicon oxygen liquid is types 会迁移 wear resistant additives, add thermoplastic property plastics in, additives slow to parts surface, formed 一层持续不断 film. poly silicon oxygen viscosity low, its can fast speed to parts surface provide wear resistant features, poly silicon oxygen viscosity can low, 否则容 easy 挥发, very fast from parts in 消失. (3)爽 slip agent 如油 acid amine, acid amine and other slip agent, it by add to thermoplastic property plastics in 时, 会迁移 to made parts surface generate 一 腊层, in decrease/reduce friction coefficient meanwhile reduce can degree, disadvantages is can improvement surface viscous phenomenon.
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