聚酯型水性紫外光固化聚氨酯的制备与性能  

Preparation and properties of water-borne UV-curing polyester polyurethane

作　　者：石耀东[1] 魏燕彦[1] 张颖颖[2] 沈泰龙[1] 唐洁珍[1] 

机构地区：[1]橡塑材料教育部重点实验室青岛科技大学,山东青岛266042 [2]广州中医药大学中药学院,广东广州510006

出　　处：《热固性树脂》2013年第4期12-15,20,共5页Thermosetting Resin

基　　金：国家自然科学基金项目(51103078);山东省高校科技发展计划项目(J09LB05);山东省中青年科学家科研奖励基金(BS2009CL020)资助

摘　　要：合成了以聚己二酸丁二醇酯二元醇、聚己内酯二元醇(PCL)、聚碳酸酯二元醇(PCDL)为软段的水性紫外光固化聚氨酯树脂,通过红外光谱、乳液粒径、稳定性以及涂膜力学、耐水、耐溶剂性测试研究了软段类型、软段含量和交联剂对合成的乳液和涂膜性能的影响。通过调整分子结构,得到了粒径<30 nm的乳液,其储存稳定期>12个月,冻融稳定性>5个循环。涂膜的硬度5H且180°对折无裂痕,抗划伤性好,耐水和溶剂性能优良,PCL和PCDL型树脂的涂膜耐丙酮擦拭35次以上,在木材、玻璃和塑料表面有很好的应用效果。The water - borne UV - curing polyurethanes with poly （butylene adipate ）, polycaprolactone diol （PCL） and polycarbonate - diol （PCDL） as their soft segments were synthesized. The effects of soft segment, soft segment content and crosslinking agent on the properties of synthesized emulsion and film were investigated by their PT - IR spectra and and the testings of emulsion particle size and stability, mechanical properties , water resistance and solvent resistance of coatings. The emulsion with particle size 〈 30 nm was obtained by adjusting the molecular structure. The storage stability of emulsion was longer than 12 months and freeze - thaw stability was longer than 5 cycles. The coating hardness was 5H and no cracks after 180~ folding. The coatings had good resistance of scratc- hing, water and solvent. The resistance of acetone wipping of PCL and PCDL resin matrix coatings were more than 35 times. The coatings had a good application results on wood, glass and plastic surface.

关 键 词：聚己内酯二元醇 聚碳酸酯二元醇 水性紫外光固化 聚氨酯 软段 高硬度 抗划伤 耐溶剂性 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]