热成型专用透明聚丙烯PPT5015的开发与应用  

Development and application of transparent thermoforming polypropylene specialty PPT5015

作　　者：张宝忠 王辉 Zhang Baozhong;Wang Hui(Research Institute of SINOPEC Tianjin Branch,Tianjin 300271,China)

机构地区：[1]中国石油化工股份有限公司天津分公司研究院

出　　处：《合成树脂及塑料》2019年第4期41-44,共4页China Synthetic Resin and Plastics

摘　　要：将热成型专用透明聚丙烯PPT5015与国外同类型产品的微观结构和力学性能进行表征,分析了PPT5015制品雾度较大及韧性不足的原因。通过优化PPT5015中乙烯含量及在配方中添加高效成核剂的方法,成功解决了PPT5015存在的透明度较差和韧性不足的问题,雾度由40.7%降低到20.7%,降低了49%;简支梁缺口冲击强度(常温)由3.16kJ/m^2提高到4.26kJ/m^2,提升了35%,产品性能得到下游客户的认可。This paper provides insight into the causes of high haze and low impact strength of transparent thermoforming polypropylene specialty PPT5015 by characterizing the microstructure and mechanical properties of PPT5015 and the similar imported products. The problems of transparency and impact strength existing in PPT5015 are solved by optimizing the ethylene content and adding high transparent nucleating agent. The haze of the material falls from 40. 7% to 20. 7% by 49% and Charpy notched impact strength is increased at ambient temperature from 3.16 kJ/m^2 to 4.26 kJ/m^2 by 35%,meeting the requirements of downstream users.

关 键 词：聚丙烯 雾度 成核剂 冲击强度 弯曲模量 乙烯含量 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]