耐低温耐应力发白改性聚丙烯产品开发及应用  

Development and application of low temperature and stress whitening resistant modified polypropylene products

作　　者：韩书宇顾亥楠 李涛 邱琪浩 杨扬 Han Shuyu;Gu Hainan;Li Tao;Qiu Qihao;Yang Yang(Sinopec Ningbo New Material Research Institute Company Limited,Ningbo 315207,China;Ningbo Dafeng Jiangning New Material Technology Co.,Ltd,Ningbo 315204,China)

机构地区：[1]中石化宁波新材料研究院有限公司,浙江宁波315207 [2]宁波大风江宁新材料科技有限公司,浙江宁波315204

出　　处：《塑料包装》2025年第2期17-22,共6页Plastics Packaging

摘　　要：利用双螺杆挤出机制备了耐低温耐应力发白改性聚丙烯(PP)材料,并对材料力学性能及热性能进行表征,探讨聚乙烯和弹性体增韧剂对改性聚丙烯体系的影响机理,并结合市场需求优化开发耐低温耐应力发白改性聚丙烯产品。结果表明,聚乙烯的加入可缓解改性聚丙烯材料因应力导致的发白现象;聚乙烯和弹性体增韧剂的加入对改性聚丙烯材料的耐低温性能有明显的改善作用;通过调整配方开发出的耐低温耐应力发白改性聚丙烯材料可满足市场使用需求。The low temperature and stress whitening modified polypropylene(PP)was prepared by twin-screw extrusion mechanism,and the mechanical and thermal properties of the material were characterized.The influence mechanism of polyethylene and elastomer toughener on the modified PP system was discussed,and the low temperature and stress whitening modified PP products were optimized according to the market demand.The results show that the addition of polyethylene can alleviate the stress-induced whitening of modified polypropylene.The addition of polyethylene and elastomer toughener can obviously improve the low temperature resistance of the modified polypropylene material.The modified polypropylene material with low temperature and stress whitening resistance developed by adjusting the formula can meet the market demand.

关 键 词：改性聚丙烯 耐低温 耐应力发白 力学性能 聚乙烯 弹性体增韧剂 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]