自固化双酚酸环氧的制备及其性能研究
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摘要
采用生物基平台化合物乙酰丙酸为原料制备了双酚酸环氧,通过红外和核磁对其分子结构进行了表征。双酚酸环氧树脂结构中同时含有羧基和环氧基,可以实现自固化,将得到的固化漆膜进行力学、热稳定性及耐溶剂性测试,实验结果表明,漆膜的热分解温度为461.5℃,玻璃化转变温度为70.84℃,铅笔硬度9 H,附着力为1级,柔韧性相对较差。漆膜的耐溶剂性优异,耐热水以及耐酸和盐的化学腐蚀性均较优异。
The bisphenol acid epoxy resin was prepared by using levulinic acid, bio-based platform compound as raw material. Its molecular structure was characterized by infrared spectroscopy and nuclear magnetic resonance. The bisphenol acid epoxy resin structure had both carboxyl group and epoxy group, and could be self-cured. The mechanical properties,thermal stability and solvent resistance of the cured film were tested. The results showed that the decomposition temperature and glass transition temperature of the film was 461. 5 ℃ and 70. 84 ℃,respectively. The pencil hardness was 9 H. The adhesion was level 1 and the flexibility was relatively poor. The cured film had excellent solvent resistance, hot water resistance and chemical corrosion resistance to acids and salts.
The bisphenol acid epoxy resin was prepared by using levulinic acid, bio-based platform compound as raw material. Its molecular structure was characterized by infrared spectroscopy and nuclear magnetic resonance. The bisphenol acid epoxy resin structure had both carboxyl group and epoxy group, and could be self-cured. The mechanical properties,thermal stability and solvent resistance of the cured film were tested. The results showed that the decomposition temperature and glass transition temperature of the film was 461. 5 ℃ and 70. 84 ℃,respectively. The pencil hardness was 9 H. The adhesion was level 1 and the flexibility was relatively poor. The cured film had excellent solvent resistance, hot water resistance and chemical corrosion resistance to acids and salts.
引文
[1]权彦,李小蓉,孟庆华.环氧树脂固化剂研究进展及其发展趋向[J].中国科技投资,2013,31(11):397-397.
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[7]陈宇飞,张旭,孙佳林,等.二氧化钛改性环氧树脂胶黏剂的性能[J].江苏大学学报(自然科学版),2013,34(3):335-339.
[8]Zhang X H,Chen S,Min Y Q,et al.Synthesis of novel bisphenol containing phthalazinone and azomethine moieties and thermal properties of cured diamine/bisphenol/DGEBA polymers[J].Polymer2006,47(6):1785-1795.
[2]Unruh D A,Pastine S J,Moreton J C,et al.Thermally Activated,Single Component Epoxy Systems[J].Macromolecules2011,44(16):6318-6325.
[3]狄宁宇,姚菊明,汪蔚,等.环氧树脂潜伏性固化剂1,2,4,5-苯四甲酸/2-甲基咪唑盐的制备及表征[J].材料导报,2015,29(11):380-384.
[4]刘宇艳,何利娜,万志敏,等.新型环氧树脂潜伏性促进剂的合成、表征及性能研究[J].航空材料学报,2008,28(1):71-75.
[5]张惠玲.新型环氧树脂潜伏性固化剂的合成及性能研究[J].武汉理工大学,硕士,2005.
[6]周芳礼,彭忠利,夏洋.潜伏性脂肪胺固化剂的合成及性能研究[J].广东化工,2013,40(7):25-26.
[7]陈宇飞,张旭,孙佳林,等.二氧化钛改性环氧树脂胶黏剂的性能[J].江苏大学学报(自然科学版),2013,34(3):335-339.
[8]Zhang X H,Chen S,Min Y Q,et al.Synthesis of novel bisphenol containing phthalazinone and azomethine moieties and thermal properties of cured diamine/bisphenol/DGEBA polymers[J].Polymer2006,47(6):1785-1795.