Shanghai Daoqin Plastics Co., Ltd.

         additives type more, has upper types, product types formed upper 万. additives selection and application, must application for types type, processing methods, products and combined separation and other multiple factors. polymer use additives is 例, selection additives 时应考虑 below/following several issues.

        1, additives and products property

         additives and polymer 匹配, this is selection additives 时首先 need issues. additives and polymer property it between versus property and for stability property effect/influence.

         generally 说, additives must long 期, stability, uniform in products in can its application can. therefore usually requirements selection additives and polymer need has good versus property. if versus property good, additives easy 析出.

         solid additives 析出俗称 is “喷霜”, liquid additives 析出则称 as “渗出” or “出汗”. additives rear not only function, but also effect/influence products appearance and 手感. additives and polymer versus property main/primary 取决于 it structure versus property.

        并 non requirements has additives must and polymer has good versus property. machine filling agent and machine material, it solvent polymer, versus property 而言, it in polymer in dispersion is non versus, full 析出. for this category of additives requirements it fine degree small, dispersion property good. is has additives and polymer versus property large good. lubricant versus property if large, 就会起 to increase agent function, formed polymer soft 化.

         additives and polymer property important issues, is it in stability property effect/influence. has polymer (如 polyvinyl chloride (PVC)) separation understanding material is acid property (放出HCl), make additives 失效, and alkali property additives formed salt. has additives accelerated polymer degradation.

        2, additives resistant property

         polymer material in use conditions lower, still can maintain property can can force resistant property. maintain resistant property is anti additives loss 失.

         additives loss main/primary through strip/profile 途径: 挥发, and 迁移.

        挥发 property large small 取决于 additives structure. generally 讲, molecular weight small, property large.

        抽出 property and additives in different in solvent understanding degree related. need according to products use ring selection additives product types.

        迁移 property is polymer in certain additives separation can to and its 接触 材 material upper property 质. property large small and additives in different polymer in solvent understanding degree has 关, meanwhile requirements additives tool has resistant water, oil resistant, resistant solvent agent can force.

        3, additives for processing conditions property

         processing conditions for additives requirements, most main/primary is heat resistant property, requirements additives in processing temperature degree lower separation understanding, easy and rise 华. for processing equipment and mold generate function.

        同一 types polymer, due to processing molding methods different, need additives can can has different.

        4, additives for products applications property

         products applications for additives selection has made 约. different applications products for using/adopting additives appearance, odor, property, resistant property, electrical property can, thermal properties, weather resistance, property and other has requirements. shallow color products can use easy additives.

         especially is additives property issues, already 引起人们广泛 heavy 视, has 争议 毒 property additives made it in food and material packaging materials, water tube/pipe, medical devices, toys plastics and products upper and textile products upper application, 各国都 made different standards.

        5, additives combined in function and for resistant function

        一 types polymer meanwhile use multiple additives, this additives meanwhile in polymer system in, between has effect/influence. generate 协同效应, add and 效应, for resistant and other.

         add and is types or types above additives use 时, it 们 总效应 and other it 们各自 mono use can add and. 协同效应 is types or types above additives use 时, it 们 总效应 ultra- it 们各自 mono use can add and.

        而 for resistant 效应则 versus 反, is types or types above additives use 时, it 们 总效应 small it 们各自 mono use can or add and. therefore selection additives combined 时一定 need selection tool has function different additives, anti for resistant generate.