聚氨酯的后交联研究进展  

Progress in the Post-crosslinking of Polyurethane

作　　者：王世杰[1,2] 杨鹏飞 李天铎[1,2] 

机构地区：[1]山东省轻工助剂重点实验室,济南250353 [2]山东轻工业学院化学与制药工程学院,济南250353

出　　处：《高分子通报》2012年第2期16-27,共12页Polymer Bulletin

基　　金：山东省自然科学基金(ZR2010BQ002);国家自然科学基金(21176147)

摘　　要：通过交联可以将线型聚合物连接成三维网状结构,适度交联后聚氨酯的拉伸强度、模量、耐溶剂性、耐高温性等许多性能都能得到大幅提高,而交联方法、交联的种类及交联密度的大小都是重要的影响因素,因此对交联方法、交联密度的测定、交联密度与聚氨酯性能之间的关系研究对于聚氨酯的质量控制非常重要。本文首先详细介绍了聚氨酯后交联的常用方法,然后对聚氨酯交联密度的测定方法进行了分析比较,在此基础上进一步介绍了国内外关于聚氨酯交联密度与其性能的关系方面的研究进展。The crosslinking of polymer chains is of primary＇importance in controlling many polymer properties. Large increases in the degree of crosslinking make amorphous polymers more rigid and cause them to have higher softening points and a higher modulus. The properties of polyurethane are influenced by the method of crosslink, the structure of crosslink agent and the crosslink density. Therefore, it is very important to research the way of crosslink, the measurement of crosslink density and the relationship between the property and two-step methods＂ based on linear prepolymer that the common used methods to determinate works about the effects of crosslink density on crosslink density of polyurethane. In this paper, several to prepare crosslinked polyurethane are reviewed, after the crosslink density are summarized. Furthermore, the the properties of polyurethane network are introduced as well.

关 键 词：聚氨酯 后交联 交联密度 

分 类 号：O633.2[理学—高分子化学]