摘要
采用予聚物混合法合成了聚氨酯乳液，考察了合成条件包括予聚物分散温度、－NCO／－OH基团比例、亲水剂的选用等。另外，以苯乙烯作为提高耐水性的改性单体以BHPO－TEPA界面氧化还原体系为引发剂，通过原位聚合法制备了聚氨酯──苯乙烯接枝胶乳并对其进行了结构分析。接枝胶乳可同时提高粘接性能和耐水性能。
This paper synthesised a polyurethane latex with the mixing of prepolymer,and investigated the synthetic conditions which include the temperature of dispersion,group ratio of -NCO to -0H,selecting of hydtophilic agent. Moreover,by the use of styrene as a modifier and BHPO-TEPA interfacial oxidationreduction system as an intiator this paper manufactured a polyurethane-styrene graft latex with in-situ polymerization and gave a structure analysis and ditermination of base properties for it,the results shows that the modified latex has a higher adhesi0n strength to textile(22. 3N/cm) and a lower water absorption (8. 2% for 24h)than the original latex(19. 8N/cm and 14. 5%,resp )
出处
《中国胶粘剂》
CAS
1998年第3期8-11,共4页
China Adhesives
关键词
聚氨酯乳液
苯乙烯
接枝聚合
改性
胶粘剂
polyurethane emulsion styrene graft polymerization interfacial oxidation-reduction reaction
