【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。更多还原

【Abstract】 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),2hydroxy ethyl acrylate(HEA) and dimethylopropionic acid(DMPA) after neutralizing by triethylamine(TEA).2-hydroxy-4′-hygroxyethoxy-2-methylpropiophenone(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.更多还原