摘要
超高分子量聚乙烯(UHMWPE)因优异的力学性能、耐磨性和化学稳定性具有广泛应用。但超高分子量导致熔体流动性极低,传统加工方法难以应用,限制了工业化推广。针对UHMWPE的加工难题,综述了多种分子链调控策略,包括催化剂调控、聚合条件优化及后期共混改性等,分析了不同策略对UHMWPE加工性能的影响及其机理,以改善熔体流变性,提高UHMWPE的可加工性,同时保持较好的机械性能,为UHMWPE的工业应用提供理论指导和技术参考。
Ultra-high molecular weight polyethylene(UHMWPE)is widely applied owing to its exceptional mechanical properties,wear resistance,and chemical stability.However,its extremely high molecular weight results in very low melt flowability,which renders conventional processing methods impracticable and impedes industrial popularization.To address the processing challenges of UHMWPE,this review summarizes various molecular-chain regulation strategies,including catalyst design,optimization of polymerization conditions,and post-polymerization blending modifications.This review analyzes the effects of different strategies on the processability of UHMWPE and the underlying mechanisms,with the aim of improving melt rheology and enhancing the processability of UHMWPE while retaining relatively good mechanical performance,providing theoretical guidance and technical references for the industrial application of UHMWPE.
作者
刘睿喆
LIU Ruizhe(Sinopec(Beijing)Research Institute of Chemical Industry Co.,Ltd.,Beijing 100013,China)
出处
《石油化工》
2025年第9期1363-1371,共9页
Petrochemical Technology
关键词
超高分子量聚乙烯
链缠结调控
催化剂优化
聚合条件
后期共混
ultra-high molecular weight polyethylene
chain entanglement regulation
catalyst optimization
polymerization conditions
post-polymerization blending
作者简介
刘睿喆(1993-),男,山东省济宁市人,博士,工程师,电话:010-59224752,电邮:liurzh.bjhy@sinopec.com。
