纤维级超高分子量聚乙烯的制备及性能研究  

Preparation and properties of fiber-grade ultrahigh-molecular weight polyethylene

作　　者：李晓庆[1] 周建勇[1] 毕晓龙[1] 李留忠[1] 李文义[1] 裴小静[1] 

机构地区：[1]中国石油化工股份有限公司齐鲁分公司研究院,山东临淄255400

出　　处：《合成纤维工业》2012年第4期30-33,共4页China Synthetic Fiber Industry

摘　　要：采用自制新型高效负载型QTE-1催化剂,合成了用于纺丝的纤维级超高分子量聚乙烯(UHM-WPE),进行了中试以及工业化生产;考察了反应温度、反应压力等工艺条件对UHMWPE性能的影响,并考察了其纺丝性能。结果表明:QTE-1催化剂体系聚合活性较高,可达5×104g/(g.h)以上,反应动力学平稳,UHMWPE黏均分子量可达4×106以上;UHMWPE黏均分子量随反应温度的升高而降低,随反应压力的增大而增高;UHMWPE堆密度随反应温度和反应压力升高而增高;UHMWPE中试和工业化生产工艺平稳,产品性能优异,能够较好地满足纺丝要求。UHMWPE纤维断裂强度达28.44 cN/dtex,模量达1 400 cN/dtex。A fiber-grade ultrahigh-molecular weight polyethylene （UHMWPE） was synthesized using serf-made novel high-efficiency supported catalyst QTE-1. The pilot and commercial production were carried out. The effects of process conditions, including reaction temperature and pressure, on the properties of UHMWPE were investigated. The spinning performance of UHMWPE was also studied. The results showed that QTE-1 catalyst system had relatively high polymerization activity above 5 × 104 g/（ g · h） and provided steady reaction kinetics, and UHMWPE had the viscous average molecular weight over 4 × 106; the viscous average molecular weight of UHMWPE dropped with the increase of reaction temperature and rose with the increase of reaction pressure when the bulk density increased with the increase of reaction temperature and pressure; the pilot and commercial production of UHMWPE proceeded stably and the product satisfied the spinning requirement due to its excellent properties. UHMWPE fiber had the breaking strength of 28.44 cN/dtex and modulus of 1 400 cN/dtex.

关 键 词：超高分子量聚乙烯 催化剂 聚合 纤维级 工业化 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]