乙酰丙酮金属络合物对酸酐固化环氧树脂体系潜伏性促进作用的研究  

STUDIES ON THE METAL ACETYLACETONE AS AN LATENT ACCELERATOR OF ANHYDRIDE CURED EPOXY RESINS

作　　者：陈平 刘胜平[2] 宋永贤[3] 彭新生[3] 

机构地区：[1]哈尔滨玻璃钢研究所,哈尔滨邮政编码150036 [2]哈尔滨电工学院,哈尔滨邮政编码150040 [3]中国科学院长春应用化学研究所,长春邮政编码130022

出　　处：《高分子学报》1993年第4期485-489,共5页Acta Polymerica Sinica

摘　　要：酸酐固化环氧树脂体系比胺固化的体系具有更优异的力学和电气性能以及高温热稳定性能,但需要较高和较长的固化温度和时间。尽管在室温下有一定的使用期,为了节红能源和缩短生产周期,通常用叔胺类促进剂加快其固化反应速率,但此时体系的使用期较短。因此研制一种能用于酸酐固化环氧树脂体系的潜伏性促进剂是十分必要的。理想的潜伏性促进剂应使其在室温下的贮存使用期不受影响,且在一定的温度下具有较快的固化反应速率,此外,固化产物应具有良好的机电热性能。A transition metal acetylacetone was studied as latent accelerator in the curing of anhydride cured epoxy resin by DSC, TEA, and rotation viscometer technique. The results reveal that the metal acetylacetone serves as an latent accelerator for anhydride curable epoxy resin system, and the rate of curing is found to increase with enhanced concentrations of the metal chelate. The system provides very fast gel time at 160-180℃ and combined with very good storage stability (> two months). Curing kinetic studies reveal that the overall curing process follows first order kinetics. The electrical, mechanical and thermal properties of cured compound of epoxy resin system catalyzed by the MT(acac)n and BDMA accelerator and cured by anhydride was also studied and compared in this paper.

关 键 词：酸酐 环氧树脂 金属络合物 固化 

分 类 号：O633.13[理学—高分子化学]