高熔指薄壁注塑料聚丙烯LHM65的开发及应用

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作者:: 宋寿亮，陈兴锋，黄昌敏，高志鹏，周铜峰
Song Shouliang, Chen Xingfeng, Huang Changmin, Gao Zhipeng, Zhou Tongfeng

作者单位:: 中国石油广西石化公司，广西钦州 535000
PetroChina Guangxi Petrochemical Company, Qinzhou 535000, China

关键词:: 聚丙烯；薄壁注塑；高熔指；食品包装容器；刚性
polypropylene; thin walled injection molding; high melting point; food packaging containers; rigidity

摘要:: 对高熔指聚丙烯生产技术进行研究，在 20×104 t/a的 Unipol气相工艺聚丙烯生产装置

上，采用氢调搭配裂解法成功生产出各项性能优异的高熔指薄壁注塑聚丙烯LHM65，其熔体

流动速率稳定在60.0~80.0 g/（10 min），弯曲模量达1 630~1 650 MPa，黄色指数为-6.5~-6.3，拉

伸屈服应力为 34.5~35.0 MPa。将 LHM65 应用于一次性食品包装容器生产，其流动性、延展

性、柔韧性、刚性、以及成型效果均较好，制品满足食品包装要求。

Research was conducted on the production technology of high melt index polypropylene. On a Unipol gas-phase process

polypropylene production plant with a capacity of 20×104t/a, LHM65, a thin-walled injection molded polypropylene with excellent

properties, was successfully produced using hydrogen blending and cracking method. The melt flow rate remained stable at 60.0~

80.0 g/(10 min), the bending modulus reached 1630-1650MPa, the yellow index was -6.5 to -6.3, and the tensile yield stress was

34.5-35.0 MPa. The application of LHM65 in the production of disposable food packaging containers has shown good fluidity,

extensibility, flexibility, rigidity, and molding effect, and the products meet the requirements of food packaging.