第42卷第7期 2012年7月
涂料工业
PAINT&COATINGS INDUSTRY
水性紫外光固化合成革用
聚氨酯丙烯酸酯树脂的合成及性能研究
刘玉婷"2，田智杰"2，部超群，尹大伟12（1.陕西科技大学教育部轻化工助剂化学与技术重点实验室，西安710021；2.陕西科技大学化学与化工学院，西安710021；
3，浙江温州轻工研究院，浙江温州325000）
Vol.42No.7 Jul.2012
摘要：采用聚丁二醇（PBG）、2,4-甲苯二异氰酸酯、二羟甲基丙酸（DMPA)和丙烯酸羟乙酯合成了紫外光固化水性聚氨酯丙烯酸酯树脂，利用FT-IR对树脂进行了表征，探讨了树脂亲水基团含量和中和度对乳液性能的影响，分析表征了固化膜的基本性能。结果表明：乳液的粒径随着一COOH含量的提高而下降，乳液的分散性、稳定性及黏度随 C00H含量增加而增大；乳液黏度在中和度为90%时达到最高6.222mPa·s，粒径达到最小59.8nm。固化膜的吸水率随一COOH含量的增加而上升，固化膜对PVC板具有很好的附着力，其铅笔硬度随着DMPA/PBG比例的增加而上升。
关键调：水性聚氨酯丙烯酸酯；紫外光固化；合成革涂饰剂
中图分类号：TQ630.4*3
文献标识码：A
文章编号;02534312(2012)07003504
Preparation and Characterization of UV--Curable Waterborne
Polyurethane AcrylicResinUsedfor SyntheticLeather
Liu Yuting'.2, Tian Zhijie'-?,Shao Chaoqun', Yin Dawei.?
(1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education
Shaanxi University of Science & Technology, Xian 710021, China; 2. School of Chemistry qnd Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, Chind;
3. Wenzhou, Zhejiang Prowince Light Industry Research Institute, Wenzhou, Zhejiang 325000, China)
Abstract : An UV - curable waterborne polyurethane acrylic resin has been synthesized from polybutylene glycol(PBG), toluene disocyanate ( TDI), dimethylol propionic acid (DMPA) and hydroxyethyl acrylate(HEA). The resin was characterized by FT IR analysis. The effects of the content of hydrophilic group and neutralization degree on emulsion properties were discussed, and physical properties of cured film were also characterized. The results showed that with the increase of the -COOH content, the emulsion granular-ity decreased, while the dispersion, stability and viscosity of the emulsion increased. When the neutraliza-tion degree was 90% , the viscosity of the emulsion hit up to a maximum value of 6. 222 mPa · s, and the particle size down to a minimum value of 59. 8nm. The water absorption of the cured film increased with the increase of the —COOH content. The cured film showed a good adhesion on PVC board, and the pencil hardness increased with the increase of the molar proportion of DMPA/PBG.
Key Words : waterborne polyurethane acrylate; UV curable; finishing agent of synthetic leather
随着人们节能和环保意识的加强，世界各国对传统溶剂型涂料中挥发性有机化合物（VOC)的排放愈来愈加以限制。研制低污染环保型的水性涂料、粉末涂料和高固体分涂料等环境友好型涂料已成为涂料开发的主要方向(1-2)。水性聚氨酯内烯酸酯（WPUA）可利用紫外光进行固化，兼具聚丙烯酸
【基金项目】温州市工业科技计划项目，项目编号：H20100080
作者简介：刘峰（1971一），女，博士，教接，主要从事有机合成方面的研究。
酯和聚氨酯两种材料的特点，具有耐腐蚀性、耐磨性好、光泽好、附着力强等优点13-5)。所以，研发水性聚氨酯丙烯酸酯涂料，适应环保和节能的需要，已成为当今涂料研究的热点。目前国内开发的水性光固化聚氨酯丙烯酸酯涂料与传统溶剂型光固化聚氨酯丙烯酸酯涂料相比仍存在许多局限性16}，如涂
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工艺技术