阳离子型水性聚氨酯合成及力学性能研究  

Synthesis and the Mechanical Properties Study of Cationic Waterborne Polyurethane

作　　者：段冬海[1] 沈一丁[1] 辛华[1] 李培枝[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《聚氨酯工业》2010年第4期42-44,共3页Polyurethane Industry

基　　金：国家自然科学基金项目(50973057);陕西省13115重点项目(2007E118)

摘　　要：采用异佛尔酮二异氰酸酯(IPDI)、聚四氢呋喃醚二醇(PTMG1000)、N-甲基-二乙醇胺(MDEA)等为主要原料,合成了阳离子型聚氨酯乳液,考察了nNCO/nOH、阳离子亲水性扩链剂MDEA用量及交联剂三羟甲基丙烷(TMP)用量对聚氨酯胶膜力学性能的影响,并采用红外光谱、热失重等手段对聚氨酯胶膜进行了分析。结果表明,当nNCO/nOH为1.4、MDEA质量分数8.54%、TMP质量分数为1.61%时,所得阳离子聚氨酯胶膜的力学性能较好,热稳定性能较高。A series of cationic waterborne polyurethanes （WPU） emulsion were prepared using isophorone diisocyanate（ IPDI ）, polytetrahydrofuran glycol （PTMG1000）, N-methyl diethanolamine （MDEA）, trimethylol propane （TMP） as materials. The effects of nNCO/nOH, cationic hydrophilic extender chain MDEA content and TMP dosage on the mechanical properties of the emulsion cast films were investigated, and the cationic waterborne polyurethane films were analyzed by FF-IR and TG. The experimental data showed that, when nNCO/nOH was 1.4, MDEA mass fraction was 8. 54%, TMP mass fraction was 1.61%, the mechanical properties and thermal stability of cationic WPU films were the best.

关 键 词：阳离子水性聚氨酯 力学性能 热稳定性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]