40期 2016年8月
东科业
PAINT & COATINGS INDUSTRY
Vol.46No.8 Aug.2016
可控交联度的大豆油基水性聚氨酯的制备与研究
杨清萍，吴素平，王新闻，高静雅，卿宁*
（五邑大学化学与环境工程学院，广东江门529020）
摘要：以丙烯酸（AA)作为开环试剂.与环氧大豆油（ESO)反应制备可控羟基数的多元醇（AE-（））（）二程O（TMP）和中和剂三乙醇胺（TEA）等原料，制备出性能良好的大豆油基水性聚氨酯乳液（SWPU）。通过傅里叶变换红外分析、热重分析和机械测试研究了涂膜的结构和物理性能，研究了AESO和PPG相对含量的变化对SWPU的黏度和稳定性以及涂膜的耐水性、热稳定性及力学性能的影响。结果表明：成功地以AESO改性水性聚氨酯，得到的SWPU乳液具有较好的稳定性，涂膜耐水性得到改善，且具有较好的热稳定性，拉伸强度得到提高，断裂伸长率有所下降。
关键词：丙烯酸酯化环氧大豆油；可控交联度；水性聚氨酯
中图分类号：TO630.4
文献标识码：A
文章编号：0253-4312(2016)08-0041-06
PreparationofAcrylatedSoybeanOil-BasedWaterborne
Polyurethane with Controllable Crosslink Density YangQingping，WuSuping，WangXinwen,Gao Jingya,QingNing(College of Chemical and Environmental Engineering,Wuyi University，
Jiangmen，Guangdong529020，China)
Abstract:Polyols （AESO) with different hydroxyl number were obtained by the reactior of acrylic acid and epoxied soybean oil. An acrylated soybean oil-based waterborne polyure-thane(SWPU)was prepared by the reaction of AESO,PPG-2000O,IPDI,DMPA,TEA and water,etc.The thermophysical and mechanical properties of the SWPU films have been studied by Fourier transform infrared spectroscopy, thermogravimetric analysis and mechanical testing respectively.The results indicated that SWPU has been successfully modified by AESO. The emulsion had good stability. Furthermore, the film exhibited the decreased water absorp tion, the increased tensile strength and the decreased elongation at break.
Key Words : acrylated epoxied soybean oil; controllable crosslink density; waterborne PU
水性聚氨酯是以水为分散介质的二元胶态体系，具有难燃、无毒、低污染、易贮存、使用方便等特点，还
具有耐低温、柔韧性好的优点。传统的聚氨酯原材料，如异氰酸酯、多元醇，主要来源于石油化工产品
[基金项目］广东省高校科技创新重点项目（cxzd1128)；广东省教育厅省级重大项目（2014KZDXM056）；五邑大学青年科研基金
项目(2014zk11)
*通信联系人
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