Shanghai Daoqin Plastics Co., Ltd.

         plastics formulation design surface very simple, its 实包含 very more inner in 联系, is design high property can, easy processing, low price formulation, selection additives need factors very more, 现提出 below/following several factors 供参考:

        一, need to selection additives

        按 need to selection combined additives product types, add additives can separation its expected 功效, to indicators. indicators generally is product standards, standards, or 客户提出 property can requirements. additives specific selection scope/range lower:

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

         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 (SmCo5 or Sm2Co17), iron type (NdFeB), iron nitrogen type (SmFeN), aluminum type magnetic powder large type.

         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 Millad 3988效果 most good.

         wear resistant ——石墨, 二硫化钼, copper powder and other.

         insulation ——煅烧 high 岭土.

         retardant 隔——云母, 蒙脱土, and other.

        二, 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; nucleating agent for copolymer polypropylene (PP) good; 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.

        三, additives 形态

        同一 types formed separation additives, its different, for modified function effect/influence very large.

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

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

        2, additives degree

        A. additives degree for force property can effect/influence

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

        B. 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.

        C. 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.

        D. 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.

        3, 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. large separation formulation requirements additives and resin uniform dispersion, for retardant property formulation 则希望 additives in resin in distribution. 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, must method improve/increase or improvement its versus property, using/adopting compatibilizer or coupling agent surface active 化处理 and other.

         has machine type additives surface 经 处理 rear, modified 效果都会 improve/increase. especially filler most is obvious, its it also has glass fiber, machine flame retardant and other.

         surface treatment coupling agent and compatibilizer is 主, coupling agent specific silicon type, titanium acid ester type and aluminum acid ester type, compatibilizer is resin for maleic anhydride grafted polymer.