王正祥,李运华,肖细梅,陈 洪.基于PEDA的UV固化水性聚氨酯乳液及涂膜性能研究[J].包装工程,,():.
WANG Zheng-xiang,LI Yun-hua,XIAO Xi-mei,CHEN Hong.Properties of UV-Curable Waterborne Polyurethane Emulsion and Its Film Based on PEDA[J].Packaging Engineering,,():. |
| 基于PEDA的UV固化水性聚氨酯乳液及涂膜性能研究 |
| Properties of UV-Curable Waterborne Polyurethane Emulsion and Its Film Based on PEDA |
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| DOI： |
| 中文关键词: 紫外光固化 水性聚氨酯 性能 |
| 英文关键词: UV-curable waterborne polyurethane property |
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| 中文摘要: |
| 目的 研究双键含量可调的紫外光固化水性聚氨酯乳液及其涂膜性能。 方法 通过直接酯化法制备季戊四醇二丙烯酸酯（ PEDA），并以其为功能性扩链剂与甲苯二异氰酸酯（ TDI）、聚酯二元醇（ POL-756T）、二羟甲基丙酸（ DMPA）等原料制备一系列从侧基引入C=C双键的水性聚氨酯乳液。分别研究不同含量的PEDA及DMPA对乳液及涂膜性能的影响。 结果 PEDA含量的增加会使其涂膜拉伸强度增加、断裂伸长率降低、热稳定性随之增强； DMPA含量的增加会使乳液的稳定性增强，颜色更加透明，粒径变小，但耐水性会降低。 结论 当PEDA质量分数为6.1%， DMPA为8.3%时， UV固化水性聚氨酯乳液具有良好的外观、稳定的性能，且涂膜的耐水性和力学性能优异。 |
| 英文摘要: |
| Objective A research that the double bond content can be adjustable on UV-curable waterborne polyurethane emulsion and film properties. Methods The pentaerythritol diacrylate (PEDA) was prepared via direct esterification, and used as a functional chain extender with 2,4-tolylene diisocyanate(TDI), polyethylene glycol(POL-756T), dimethylol propinic acid(DMPA) as main materials to synthesize a series of UV-curing waterborne polyurethane emulsion by introducing the C=C bond into the side chain. Different content of PEDA and DMPA on the effects of emulsion and coating film was studied. Results The increase of PEDA content could lead to the increase of film tensile strength, thermal stability and to the decrease of elongation at break. The increase of DMPA content could lead to the improvement of storage stability, transparence and fine particle size and to the decease of water resistance. Conclusion When the PEDA is 6.1%, DMPA is 8.3%, the WPU emulsion has good appearance and stability, and the coating film has excellent water resistance and mechanical property. |
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