巴淼,王宪委,范芳欣,王玉丰,张占平,高强.紫外光固化聚氨酯自愈合涂层的合成和性能研究[J].表面技术,2019,48(9):280-286.
BA Miao,WANG Xian-wei,FAN Fang-xin,WANG Yu-feng,ZHANG Zhan-ping,GAO Qiang.Synthesis and Properties of UV Curable Polyurethane Self-healing Coating[J].Surface Technology,2019,48(9):280-286 |
| 紫外光固化聚氨酯自愈合涂层的合成和性能研究 |
| Synthesis and Properties of UV Curable Polyurethane Self-healing Coating |
| 投稿时间：2019-01-03 修订日期：2019-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.09.033 |
| 中文关键词: 丙烯酸酯 聚氨酯 改性 自愈合 硬段含量 涂层 |
| 英文关键词:acrylate polyurethane modified self-healing hard segment content coating |
| 基金项目:国家自然科学基金（51179018）；江苏省校企合作项目（KYH2018043Z） |
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| Author | Institution |
| BA Miao | 1.School of Chemistry and Materials Engineering, Changshu Institute of Technology, Suzhou 215500, China; 2.Key Laboratory of Ship-machinery Maintenance & Manufacture, Dalian Maritime University, Dalian 116026, China |
| WANG Xian-wei | 3.Nantong Baina Digital New Materials Co., Ltd, Nantong 226000, China |
| FAN Fang-xin | 1.School of Chemistry and Materials Engineering, Changshu Institute of Technology, Suzhou 215500, China |
| WANG Yu-feng | 1.School of Chemistry and Materials Engineering, Changshu Institute of Technology, Suzhou 215500, China |
| ZHANG Zhan-ping | 2.Key Laboratory of Ship-machinery Maintenance & Manufacture, Dalian Maritime University, Dalian 116026, China |
| GAO Qiang | 2.Key Laboratory of Ship-machinery Maintenance & Manufacture, Dalian Maritime University, Dalian 116026, China |
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| 中文摘要: |
| 目的 制备一种紫外光（UV）固化聚氨酯自愈合涂层，并研究其自愈合性能。 方法 以2.4-甲苯二异氰酸酯（TDI）、聚丙二醇（PPG）、三羟基聚醚多元醇（HSH330）、甲基丙烯酸羟乙酯（HEMA）、1,4-丁二醇（BDO）为原料，采用两步法合成UV固化丙烯酸酯改性聚氨酯涂层（APU）。使用红外光谱对合成涂层的化学结构进行表征，使用激光共聚焦显微镜对涂层的表界面性能进行分析，并使用拉力试验机考察涂层的力学性能、自愈合性能及成膜性能。结果 FTIR光谱结果表明，合成的涂层是丙烯酸酯改性聚氨酯涂层（APU），810 cm–1处存在来自HEMA的—C=C—双键弯曲振动峰，同时涂层仍呈现出明显的聚氨酯化学结构特性。随着HEMA的引入，涂层硬段质量分数从20%增加至40%的过程中，吸水率从36.8%降至3.1%，弹性模量从0.29 MPa增加至8.69 MPa。自愈合性能测试结果表明，随着HEMA的引入，涂层的自愈合率降低，当APU涂层硬段质量分数超过45%后，涂层失去自愈合能力。结论 制备的APU涂层具有优异的耐水性和致密性，由于HEMA含量的增加限制了软段结构的分子链运动和氢键作用，从而削弱了涂层的自愈合性能。 |
| 英文摘要: |
| The work aims to prepare a UV curable polyurethane self-healing coating and study its self-healing properties. The UV curable acrylate modified polyurethane (APU) coatings were synthesized by two-stage method with 2,4-toluene diisocyanate (TDI), poly-propylene glycol (PPG), trihydroxy polyether polyol (HSH330), hydroxyethyl methacrylate (HEMA) and 1,4-butanediol (BDO) as raw materials. The chemical structure of the coating was characterized by Fourier Transform Infrared Spectrometer, the surface-interface property was analyzed by Laser Confocal Microscopy and the mechanical properties, self-healing properties and film forming properties were tested by Tension Testing. The FTIR curve results indicated that APU coating was synthesized with the bending vibration peak of —C=C— at 810 cm–1 from HEMA, while the coating still exhibited the obvious chemical structure characteristic of polyurethane. With the addition of HEMA, the hard segment content increased from 20% to 40%, the water-absorption rate of APU coating decreased from 36.8% to 3.1%, and the elastic modulus increased from 0.29 MPa to 8.69 MPa. The self-healing rates of APU coatings decreased due to the incorporation of HEMA. When the hard segment content of APU coating exceeded 45%, the coating lost self-healing property. The synthetic APU coatings have the good water-resistance and compactness. The addition of HEMA limits the molecular chain motion and the hydrogen bonding of soft segment, thus weakening the self-healing property of APU coating. |
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