广适热合复合塑料制备及其性能研究  

Preparation and Properties of Thermo-compatible Composite Plastics

作　　者：徐韬 杨福馨[1] XU Tao;YANG Fu-xin(College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学食品学院

出　　处：《食品工业科技》2019年第18期207-211,223,共6页Science and Technology of Food Industry

基　　金：国家863项目(2012AA0992301);上海市科委工程中心建设(11DZ2280300);上海市助推计划资助项目(2013CL1312HY);上海高校一流学科项目(A2-2019-14-0003)

摘　　要：为找到一种同时能与PP、PE和PS热封的热合塑料,按照热封温度接近树脂熔融温度的原理,以线性低密度聚乙烯(LLDPE)、聚丙烯(PP)、聚苯乙烯(PS)、茂金属聚乙烯(mPE)四种熔融温度接近的树脂,按照不同比例共混流延制备薄膜,并测试膜的力学性能、光学性能、阻隔性能、热稳定性能、微观性能、抑菌性能以及防霉性能。当LLDPE/PP/PS/mPE比例为70∶20∶5∶5时,薄膜的横、纵向拉伸强度分别为23.978、21.454 MPa,透过率为19.22%,雾度为66.577%以及其他性能均较好且结构紧密。并且在与PP、PE和PS热封时,表现出较强的热封性能,因此具有实际应用价值。In order to find a thermoplastic which can simultaneously heat seal with PP,PE and PS,according to the principle that the heat seal temperature closed to the melting temperature of resin,four kinds of resin with similar melting temperature(linear low density polyethylene(LLDPE),polypropylene(PP),polystyrene(PS)and metallocene polyethylene(mPE))were blended and taped in different proportions to prepare films.The mechanical properties,optical properties,barrier properties,thermal stability,micro-properties,bacteriostasis and anti-mildew properties of the films were tested.When the LLDPE/PP/PS/mPE ratio was 70∶20∶5∶5,the transverse and longitudinal tensile strength of the films were 23.978,21.454 MPa,the transmittance was 19.22%,the haze was 66.577%,and other properties were good and compact.And when it was hot-sealed with PP,PE and PS,it showed strong heat-sealing performance with practical application value.

关 键 词：复合塑料 制备 线性低密度聚乙烯 聚丙烯 聚苯乙烯 茂金属聚乙烯 

分 类 号：TS206[轻工技术与工程—食品科学]