| 系列紫外光-热混杂固化树脂的合成及其性能 |
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| 引用本文： | 刘红波,林峰,张武英,徐玲,何涛. 系列紫外光-热混杂固化树脂的合成及其性能[J]. 高分子材料科学与工程, 2012, 0(3): 38-40,45 |
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| 作者姓名： | 刘红波 林峰 张武英 徐玲 何涛 |
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| 作者单位： | 深圳职业技术学院化生学院;中科院广州化学所广东省电子有机聚合物重点实验室 |
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| 摘 要： | 合成了一系列同时具有光固化基团(双键)和热固化基团(环氧)的聚氨酯改性丙烯酸环氧单酯。用红外光谱(FT-IR)表征了固化过程特征吸收峰的变化,测试了柔性链段对聚氨酯改性丙烯酸环氧单酯光-热混杂固化膜的凝胶率、吸水率、力学性能、体积收缩率和热性能的影响。结果表明,在相同稀释剂条件下,与丙烯酸环氧单酯光-热固化膜相比,聚氨酯改性丙烯酸环氧单酯光-热固化膜的凝胶率可达97%以上,断裂强度有所下降,但断裂伸长率由4.6%提高到19.5%,体积收缩率由6.07%下降到4.22%,光-热固化膜的热分解温度超过了240℃。
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| 关 键 词： | 紫外光固化 热固化 聚氨酯 改性 丙烯酸环氧单酯 |
Synthesis and Properties of Series of UV-Heat Curable Polyurethane-Modified Epoxy Monoacrylates |
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| Hongbo Liu,Feng Lin,Wuying Zhang,Ling Xu,Tao He. Synthesis and Properties of Series of UV-Heat Curable Polyurethane-Modified Epoxy Monoacrylates[J]. Polymer Materials Science & Engineering, 2012, 0(3): 38-40,45 |
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| Authors: | Hongbo Liu Feng Lin Wuying Zhang Ling Xu Tao He |
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| Affiliation: | 1.School of Applied Chemistry and Biological Technology,Shenzhen Polytechnic,Shenzhen 518055,China;2.Guangdong Key Laboratory of Polymer Materials for Electronics, Guangzhou Institute of Chemistry,Chinese Academy of Sciences,Guangzhou 510650,China) |
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| Abstract: | A series of polyurethane-modified epoxy monoacrylates(PMEMA) containing both UV-curable groups(C=C) and heat-curable groups(epoxy) were synthesized.The change of absorption peaks of double bond and epoxy group were identified by FT-IR spectra during UV-heat curing process.The gel content,water absorption,mechanical,volume shrinkage and thermal characterizations of the UV cured films and UV-heat cured films were measured.Compared to the epoxy monoacrylates(EMA) UV-heat curable systems with same active diluents,the gel contents of UV-heat cured films of PMEMA systems are also beyond 97%,and its breaking strength is decreased.Therefore,the relative elongation of UV-heat cured films of PMEMA is increased from 4.6% to 19.5%,and its volume shrinkage is decreased from 6.07% to 4.22%.The first decomposition temperature of UV-heat cured films exceeds 240 ℃. |
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| Keywords: | UV-curable heat-curable polyurethane modified epoxy monoacrylates |
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