【摘要】 高分子量聚乙烯(PE)经热裂化后,可得低分子均聚物。本文考察了裂解条件与熔体粘度、平均分子量及其分布的关系,给出了可控制裂解深度的数学方程。同时也开发了熔体催化氧化技术,以自由基生成物和有机酸盐为催化剂,产品的酸值可达14以上,并探讨了催化氧化反应动力学。对所制得的乳化型PE进行了塑料、橡胶加工、造纸、热熔粘合剂等方面的应用研究。更多还原

【Abstract】 Different types of oligomers can be obtained by thermal degradation of high molecular weight polyethylene. The relationships between degradation parameters, melt viscosity, average molecular weight and molecular weight distribution are examined, and a mathematical equation for controlling degradation is provided. A melt catalytic oxidation process is developed in which organic acids and compounds capable of generating free radicals are employed as initiators. The products having acid numbers greater than it can be used in plastics manufacturing, rabber processing, paper-making, hot melt adhesives and others. The reaction kinetics of catalytic oxidation is also explored.更多还原