| 超支化聚氨酯丙烯酸酯涂料的UV固化动力学研究 |
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| 引用本文： | 林金娜,曾幸荣,侯有军. 超支化聚氨酯丙烯酸酯涂料的UV固化动力学研究[J]. 应用化工, 2009, 38(10) |
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| 作者姓名： | 林金娜 曾幸荣 侯有军 |
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| 作者单位： | 林金娜(福建农林大学,交通学院,福建,福州,350002);曾幸荣,侯有军(华南理工大学,材料科学与工程学院,广东,广州,510640) |
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| 基金项目： | 福建省自然科学基金资助项目 |
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| 摘 要： | 用FTIR和光差扫描量热法Photo-DSC对超支化聚氨酯丙烯酸酯(HBUA)的光固化动力学进行了表征。结果表明,不同固化气氛对HBUA体系的固化速率影响很大,在空气中,HBUA的最大反应速率(Rpmax)和最终碳碳双键转化率(Pf)均比在N2中的相应值低;当光引发剂Darocur1173浓度为4%,HDDA浓度为20%时,HBUA体系具有较快的反应速率及最高的最终碳碳双键转化率,分别为7.25 J/(g.s)和84.5%。
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| 关 键 词： | 超支化聚氨酯丙烯酸酯 UV固化 光差扫描量热法 动力学 |
Study on UV curing kinetics of hyperbranched polyurethane acrylate |
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| Abstract: | The photo curing kinetics of HBUA was characterized by FTIR and photo-DSC. It was found that the effect of UV-curing atmosphere on polymerization rate of HBUA was remarkable. The maximum polymerization rate (R_p~(max)) and terminal conversion (P_f) of HBUA at atmosphere was lower than at N_2. When the content of Darocurl 173 was 4% and the content of HDDA was 20% , the HBUA system had higher R_p~(max) of 7.25 J/( g·s) and the highest P_f of 84.5% .respectively. |
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| Keywords: | hyperbranched polyurethane acrylate UV-curing photo-DSC kinetics |
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