The curing characteristics and properties of bisphenol A epoxy resin/maleopimaric acid curing system
The curing characteristics and properties of bisphenol A epoxy resin/maleopimaric acid curing system
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DOI：
10.1016/j.jmrt.2022.10.008
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发表时间：
2022-10-20
影响因子：
6.4
通讯作者：
Sun, Zhanglin
中科院分区：
文献类型：
--
作者：
Liu, Hechen;Wu, Xuan;Sun, Zhanglin
环氧树脂广泛用作电力系统的绝缘材料，主要由石化材料制备而成，其缺点是不可回收且对环境有害。本文以可再生资源松香为原料制备马来海松酸（MPAc）固化剂，并与石油基固化剂（甲基六氢邻苯二甲酸酐）共混来固化双酚A型环氧树脂。研究了共混比例对环氧树脂的固化特性以及热性能、机械性能和电性能的影响。从获得的结果来看，就热性能而言，MPAc的引入提高了刚性、玻璃化转变温度和热分解温度。力学性能方面，脆性增加，拉伸强度和弯曲强度减弱。当MPAc的质量分数为2030wt%时，电性能达到最佳，满足电气设备的应用要求。本研究表明，使用松香基固化剂马来酸（MPAc）部分替代石油基固化剂可以使电气设备环境友好，展示了松香基环氧树脂的潜在应用前景。 (c) 2022 作者。由 Elsevier B.V. 出版
Epoxy resins are widely used as insulation materials for power systems and are mainly prepared from petrochemical materials, which have the disadvantage of being non-recyclable and environmentally harmful. In this paper, the maleopimaric acid (MPAc) curing agent was prepared from a renewable resource, rosin, and blended with a petroleum-based curing agent (methylhexahydrophthalic anhydride) to cure bisphenol A epoxy resin. The effects of the blending ratio on the curing characteristics as well as on the thermal, mechanical, and electrical properties of the epoxy resins were examined. From the results obtained, as for thermal properties, the introduction of MPAc enhanced the rigidity, glass transition temperature, and thermal decomposition temperature. As for mechanical properties, the brittleness was increased while the tensile strength and bending strength were weakened. When the mass fraction of MPAc was 2030 wt%, the electrical properties reached the optimum, meeting the application requirements of electrical equipment. This study shows that using rosin-based curing agent maleicpine acid (MPAc) as a partial replacement for petroleum-based curing agents can make electrical equipment environmentally friendly, demonstrating the potential application prospects of rosin-based epoxy resins. (c) 2022 The Authors. Published by Elsevier B.V.