基于HTPB的可紫外光固化聚氨酯丙烯酸酯水性体系的研究  

STUDY OF NOVEL UV-CURABLE WATERBORNE POLYURETHANE ACRYLATE DISPERSION BASED ON HYDROXYL-TERMINATED POLYBUTADIENE

作　　者：牛振斌[1] 张兴元[2] 戴家兵[2] 张和平[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室 [2]中国科学技术大学高分子科学与工程系,安徽合肥230026

出　　处：《高分子材料科学与工程》2006年第3期199-203,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金(50273035);火灾科学国家重点实验室开放基金(HZ2002-KF001)资助项目

摘　　要：以端羟基聚丁二烯(HTPB)、聚丙二醇(PPG)、异佛尔酮二异氰酸酯(IPD I)、丙烯酸-2-羟基乙酯(HEA)、2,2-二羟甲基丙酸(DM PA)为主要原料进行聚合,经三乙胺(TEA)中和,以去离子水为溶剂乳化后,制得一种稳定的可紫外光固化的新型水性聚氨酯丙烯酸酯体系。用Fourier变换红外光谱对合成产物和固化情况进行了表征。研究了HTPB与PPG相对含量变化对乳液稳定性、固化膜的耐水和耐乙醇性、热稳定性、软硬段相容性以及力学性能的影响。A new kind of UV-curable waterborne polyurethane acrylate dispersion was synthesized based on hydroxyl-terminated polybutadiene （HTPB）, poly （propylene glycol） （PPG）, isophorene diisocyanate （IPDI）, 2-hydroxy ethyl acrylate （HEA） and dimethylopropionic acid （DMPA） after neutralizing by triethylamine （TEA）. 2-hydroxy-4＇-hygroxyethoxy-2-methylpro-piophenone （Iragcure 2959） was used as a photoinitiator and deionized water as a diluent. Fourier transform infrared （FT-IR） spectra were used to identify the chain structure of the UV-curable Polyurethane prepolymer based on HTPB and the curing process. Effects of relative content of HTPB and PPG on emulsion stability, resistance to water and ethanol, thermal stability, compatibility of soft and hard segment as well as mechanic property of cured film were investigated.

关 键 词：紫外固化 水性聚氮酯丙烯酸酯 端羟基聚丁二烯 丙烯酸-2-羟基乙酯 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]