Shanghai Daoqin Plastics Co., Ltd.

        TPE toughening agent upper product types more, different material selection different toughening agent 效果会 more significantly. in selection TPE product types 时, need attention/notes lower 几点:

        1 TPE and resin versus property need good

        ①极 property versus 近原则

         plastics property large small is fiber plastics >PA>PF>EP>PVC>EVA>PS>PP, HDPE, LDPE, LLDPE;

        TPE property large small is 胶>丁晴胶> chlorine 丁胶>丁苯胶>顺丁胶>天然胶>乙丙胶;

         specific selection 时, property need for and 匹配, high property resin selection high property TPE, low property resin selection low property TPE.

        ② solvent understanding degree parameters versus 近原则

         in specific selection 时, resin and TPE solvent understanding degree parameters value need small 于1.5, can ensure its versus property good.

        2 commonly used TPE compatibilizer

         compatibilizer add for/regarding resin and TPE versus property good toughened system, add 入适当 compatibilizer, improve/increase versus property. commonly used compatibilizer is resin or toughening agent acid or acrylic type grafting material.

        3 TPE function

         different product types TPE between add 入往往 tool has function, in PP toughened formulation in, EPDM and ABS composite/compounding add toughened good.

        4 TPE add amount

        TPE add amount is more good, generally has most value. in PVC in add 入MBS时, add amount 15% is most large value, PS in add 入TPE add amount most large 15%.

        5 rigid property 补偿

        TPE as is resin toughened material 时, in toughened meanwhile, make tensile strength, flexural strength and other rigid property indicators large degree decline. is rigid property loss 失, in formulation in add rigid property filler carbon acid 钙; also can in TPE toughened system in add 入AS, PMMA and other rigid property has machine resin.

        协同 add processing additives

         for/regarding TPE add amount large toughened formulation, remove ACRTPE outer (ACR tool has 核— housing/shell structure acrylic ester type copolymer), can increase melt degree. is 此, large need add lubricant or processing additives, improvement its processing properties.

        粒 degree large small

        TPE degree for toughened effect/influence very large. 按TPE toughened 理论, for property resin 如PS, PP and other TPE degree can versus for large;而 for/regarding tough property good resin 如PVC, POM, PET and other, TPE degree can versus for small.

         another, TPE degree for products surface gloss degree effect/influence relatively large degree large products gloss degree low . in HIPS in, TPE degree large small is 2-5 micron, products surface generate light 效应, if TPE degree small 于0.5 micron 时, products surface gloss property relatively good.

        8 other need factors

         products need transparent 时, 选MBS; products need flame retardant 时, 选CPE, products need weather resistant 时, 选CPE, ACR, EVA, 不选MBS, ABS; products requirements cost low 时, 选CPE and EVA, different TPE price high low is MBS>ACR>ABS>NBR>CPE>EVA