摘要
制备了水性UV固化星型杂臂聚氨酯丙烯酸酯(WSPUA),重点研究了星型聚氨酯分子臂的软段组成(PC-DL1000和PEG400)对其乳液和UV固化涂膜性能的影响。结果表明:乳液粒径、表面张力和革表面接触角随PCDL用量减少而变小;涂膜抗张强度、断裂伸长率、耐溶剂性能随PCDL用量减少而降低,耐水性随PCDL用量减少而提高;涂膜微相分离程度随PCDL用量增加而增加,软段玻璃化温度随PCDL用量增加而降低,热稳定性随PCDL用量增加而提高。
Waterborne UV curable star-shaped hybrid arm polyurethane-acrylate （WSPUA） was pre-pared, and properties of emulsion and film after UV curing with different soft segments （PCDLIO00 and PEG400 ）were studied. The results showed that the particle size distribution, surface tension and surface con-tact angle on leather decreased with decreasing of amount of PCDL; tensile strength, elongation at break, solvent resistance reduced with decreasing of amount of PCDL, but water resistance improved with decreasing of amount of PCDL; the micro-phase separation of the film increased with increasing of amount of PCDL, glass transition temperature（Ts） of soft segment reduced with increasing of amount of PCDL, thermal stabili-ty improved with the increasing of amount of PCDL.
出处
《涂料工业》
CAS
CSCD
北大核心
2012年第3期24-28,共5页
Paint & Coatings Industry
