聚合物对PP-B的增韧作用研究  

Effect of polymer on toughness of PP-B

作　　者：陈松 Chen Song(Dalian West Pacific Petrochemical Co.LTD.,Dalian 116600,Liaoning,China)

机构地区：[1]大连西太平洋石油化工有限公司,辽宁大连116600

出　　处：《橡塑技术与装备》2021年第22期1-8,共8页China Rubber/Plastics Technology and Equipment

摘　　要：弹性体以弹性微粒分散结构对PP进行增韧,是一种非常有效的方法,是目前增韧效果最为明显研究最多的一种方法。PP为半结晶共聚物易生成大的球晶弹性,PP低温韧性不佳,通过对PP颗粒料添加选取了低密度聚乙烯(LDPE)、乙烯-醋酸乙烯共聚物(EVA)、聚丁烯(PB)、三元乙丙橡胶(EPDM)、乙烯辛烯共聚物(POE)、聚丁烯(PB)作为均聚聚丙烯(PP)的改性剂,采用弹性体增韧聚丙烯及热塑性塑料增韧两类体系,达到性能改良的目的,经由挤出机熔融挤出,注塑机注塑制样,再分别测试样品的力学性能,改善PP的低温冲击韧性。Elastomer toughening PP with elastic particle dispersion structure is a very effective method.It is the most obvious toughening effect and the most studied method at present.PP is a semi crystalline copolymer,which is easy to form large spherulites,with poor elasticity and low temperature toughness.In this paper,low density polyethylene(LDPE),ethylene vinyl acetate copolymer(EVA),polybutene(PB),ethylene propylene diene rubber(EPDM),ethylene octene copolymer(POE)and polybutene(PB)are selected as modifiers of homopolypropylene(PP).Two systems of elastomer toughened polypropylene and thermoplastic toughened polypropylene are used to achieve the purpose of performance improvement.After melt extrusion by extruder and injection molding by injection molding machine,the mechanical properties of the samples are tested respectively to improve the low-temperature impact toughness of PP.

关 键 词：聚合物 改性增韧 力学性能测试 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]