乳化氧化聚乙烯蜡的制备研究.pdfVIP

乳化氧化聚乙烯蜡的制备研究 摘 要 以 Tween20 和 Span80 复配的表面活性剂为乳化剂，采用将水、乳化剂、氧 化聚乙烯蜡一起放入烧瓶乳化的方法制备氧化聚乙烯蜡乳液。对乳液的固含率、 稳定性进行了测定。考察了乳化剂浓度、乳化剂HLB值对乳液固含率的影响。以 及反应时间、乳化剂浓度对乳液稳定性的影响。实验结果表明，乳化剂浓度和乳 化剂 HLB 值对乳液的固含率和稳定性都有影响。最佳乳化剂浓度为 5%。最适宜 的反应时间为30min。 关键词：氧化聚乙烯蜡；乳化；固化率 I 乳化氧化聚乙烯蜡的制备研究 Abstract The emulsion is obtained from the mixture of water、emulsifier and oxidized polyethylene wax. The emulsifier is Tween20 and Span80. The solid holdup and the stability of the emulsion have been investigated. Influences of emulsifier’s concentration、HLB on emulsion’s solid holdup, and influences of emulsification time 、emulsifier’s concentration on emulsion’s stability have been studied. It is shown that emulsifier’s concentration and HLB have influences on emulsion’s solid holdup and stability. The optimal emulsifier’s concentration is 5%.The proper emulsification time is 30 min. Keywords: Oxidized polyethylene wax ；Emulsification ；solid holdup II 乳化氧化聚乙烯蜡的制备研究 目 录 中文摘要················································································I 英文摘要 ················································································II 第一章 前 言 ···········································································1 1.1 选题背景 ·····································································1 1.2 研究意义 ·····································································1 1.3 文献综述 ····································································2 1.3.1 我国石蜡产