摘要
以4,4′-二苯基甲烷二异氰酸酯(MDI)、聚酯二元醇、二羟甲基丙酸(DMPA)、三羟甲基丙烷(TMP)等为主要原料合成了水性聚氨酯(WPU):n(—NCO)/n(—OH)=3.5,n(TMP)/n(聚酯)=0.1,w(DMPA)=1.8%,并对其乳液和胶膜进行分析与表征,讨论了扩链剂、交联剂和亲水扩链剂对胶膜的影响,研究表明,合成的水性聚氨酯结晶度高、强度高、耐水性好、粘接强度大.
Waterborne polyurethane （WPU） was synthesized using 4,4′-diphenyl-methane-diisocyanate （MDI）, polyesterglycol, dimethylolpropionic acid （DMPA） and trimethylolpropane （TMP） as main raw materials, n（-NCO）/ n（-OH）=3.5, n（TMP）/n（polyester）=0.1,w（DMPA）=1.8%. The emulsion and glue film aqueous polyurethane was analyzed and characterized. The effects of chain-extenders, crosslinking agent and hydrophilic chain-extender on waterborne polyurethane film were discussed. The results showed that the waterborne polyurethane had high crystallinity, high strength, good water resistance and high adhesive strength.
出处
《印染助剂》
CAS
2008年第10期25-27,共3页
Textile Auxiliaries
关键词
MDI
水性聚氨酯
胶粘剂
性能
MDI
waterborne polyurethane
adhesive
properties
