Shanghai Daoqin Plastics Co., Ltd.

         in recent years, plastics industry development, very more already from plastics processing type is plastics modified. modified formulation simple, dark machine, this need in selection plastics additives 时慎之 also 慎, that how to obtain more high property can, low cost, easy processing formulation, small will from below/following 三方面 is introduction additives selection.

        按目 selection additives

         additives specific selection scope/range lower:

         toughened

        选 elastomer, thermoplastic property elastomer and rigid property toughened material.

        (点击查看 more more inner 容 ☞) modified plastics toughened technology, this 一篇就够!

         reinforcement

        选 glass fiber, carbon fiber, must and has machine fiber.

         flame retardant

         bromine type (普通 bromine and environmental protection bromine 系), type, nitrogen type, nitrogen /磷 composite/compounding type type flame retardant, oxidation 二锑, water alloy hydrogen oxidation material.

         anti-static

        各 type anti-static agent.

         conductive

         carbon type (炭黑, 石墨, carbon fiber, carbon nano tube/pipe), metal fiber and metal powder, metal oxidation material.

         magnetic property

         iron oxygen magnetic powder, dilute magnetic powder 包括钐钴 type, iron type (NdFeB), iron nitrogen type, aluminum 镍;

         thermally conductive

         metal fiber and metal powder 末, metal oxidation material, nitrogen material and carbon material; carbon type material 如炭黑, carbon fiber, and carbon nano tube/pipe; semi 导体材 material silicon, 硼.

         heat resistant

         glass fiber, machine filler, heat resistant agent 如取代马 酰亚 amine type and β晶 type nucleating agent.

         transparent

         nucleating agent, for PP而言α晶 type nucleating agent alcohol series most good.

         wear resistant

        石墨, 二硫化钼, copper powder and other type magnetic powder large type.

         insulation

        煅烧 high 岭土.

         retardant 隔

        云母, 蒙脱土, and other.

         additives for resin tool has selection property

        红磷 flame retardant for PA, PBT, PET has 效;

         nitrogen flame retardant for oxygen type has 效, 如PA, PBT, PET and other;

         glass fiber heat resistant modified for crystallization property plastics good, for non type plastics 效果差;

        炭黑 filling conductive plastics, in crystallization property resin in good;

         nucleating agent for copolymer polypropylene (PP) good.

        形态 different function different

         additives 形状

         fiber additives reinforcement good.

         additives fiber degree can use long ratio table/sheet 示, L/D越 large, reinforcement 效果越 good, this is is what add glass fiber need from gas add 入.

        熔 melt ratio powder has maintain long ratio, decrease small 断纤几 rate.

        圆球状 additives toughened good, light degree high.

        硫 acid is type 圆球状 additives, therefore high gloss PP filling selection acid 钡, small degree rigid property toughened can use acid 钡.

         additives degree

         additives degree for force property can effect/influence:

        粒 degree small, for filling material tensile strength and impact strong/high degree has 益.

         additives degree for flame retardant property can effect/influence:

         flame retardant degree small, flame retardant 效果就越 good. water alloy oxidation material and oxidation 二锑 粒 degree small, to and other flame retardant add amount less.

         additives degree for Color Matching effect/influence:

         color agent degree small, color force high, cover/cap force strong/high, color uniform. color agent degree is small good, in 一 极限 value, but also for different property can value different. for color force 而言, nitrogen type color agent 极限粒 degree is 0.1μm, type color agent 极限粒 degree is 0.05μm. for cover/cap force 而言, color agent 极限粒 degree is 0.05μm left right.

         additives degree for conductive property can effect/influence:

        以炭黑 is 例, its degree small, easy formed conductive 通路, to conductive add 入炭黑 amount reduce. color agent 一样, degree has 一 极限 value, degree small easy poly difficult dispersion, 效果反倒不 good.

         additives surface treatment

         additives and resin versus property need good, this can ensure additives and resin 按预想 structure dispersion, ensure design indicators formed, ensure in use lifespan inner its 效果持久发挥, resistant 抽提, resistant 迁移, resistant 析出.

         remove surface active property agent and other less additives outer, and resin good versus property is its and improve/increase add amount key/critical. therefore, 必 must method improve/increase or improvement its versus property, using/adopting compatibilizer or coupling agent surface active 化处理 and other.