Electrical Tree Characteristics of Bisphenol A Epoxy Resin/Maleopimaric Anhydride Curing System.
Electrical Tree Characteristics of Bisphenol A Epoxy Resin/Maleopimaric Anhydride Curing System.
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双苯酚的电树特性A环氧树脂/甲基果酸酐固化系统。
DOI：
10.3390/polym14183867
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发表时间：
2022-09-15
期刊：
影响因子：
5
通讯作者：
Sun Z
中科院分区：
文献类型：
--
作者：
Liu H;Wu X;Guo Z;Dong P;Ge Q;Wei L;Sun Z
环氧树脂绝缘材料主要来源于石油化工材料，存在资源消耗和环境污染的缺点。为了固化双酚A型环氧树脂，以可再生资源松香为原料制备马来海松酸酐（MPA）固化剂，并与石油基固化剂（甲基六氢邻苯二甲酸酐）共混。采用分子动力学模拟（MD）和18 kV工频电压下的电树试验，研究分析了马来海松酸酐含量对电树萌生和生长特性的影响。当所用MPA含量≤10%时，固化体系的自由体积百分比随着MPA含量的增加而增加，因而引发电压变低；当MPA含量≥20%时，随着MPA含量的增加，氢化菲环结构含量显着增加，固化体系的刚性显着增加；因此，引发电压逐渐增加。 MPA4 的起爆电压比石油基对照组高 11.11%。随着 MPA 含量的增加，固化体系内极性刚性结构的作用显着抑制了电树的生长速率和长度。当MPA含量达到40%时，电树发育成浅色、薄而窄的树枝状结构。结果表明，用松香基固化剂马来海松酸酐（MPA）代替石油基固化剂固化环氧树脂，可以生产出具有优异耐树形性的环境友好型树脂，具有潜在的应用前景。
Epoxy resin insulation materials are mainly derived from petrochemical materials which have the disadvantages of resource consumption and environmental pollution. In order to cure bisphenol A epoxy resin, a maleopimaric anhydride (MPA) curing agent was prepared from rosin, a renewable resource, and blended with a petroleum-based curing agent (methylhexahy-drophthalic anhydride). The influence of maleopimaric anhydride content on the initiation and growth characteristics of electrical trees was studied and analyzed in this paper using molecular dynamics simulation (MD) and electrical tree tests at an 18-kilovolt power frequency voltage. When the MPA content used was ≤10%, the free volume percentage of the curing system increased with MPA content, and thus the initiation voltage became lower; when the MPA content was ≥20%, the hydrogenated phenanthrene ring structure content increased significantly with increasing MPA content, and the rigidity of the curing system increased significantly; thus, the initiation voltage gradually increased. MPA4 had an 11.11% higher initiation voltage than the petroleum-based control group. The effect of the polar rigid structure within the curing system significantly inhibited the growth rate and length of electrical trees as MPA content increased. Electrical trees developed into light-colored, thin, and narrow dendritic structures when the MPA content reached 40%. The results show that curing epoxy resin with the rosin-based curing agent maleopimaric anhydride (MPA), in place of a petroleum-based curing agent, can produce environmentally friendly resins with excellent electrical tree resistance and potential application prospects.
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影响因子：
5.2
作者：
Wu, Xian;Liu, Wei;Zhang, Chun
通讯作者：
Zhang, Chun
影响因子：
3
作者：
Butler, Tristan;Bunton, Caleb;Laskoski, Matthew
通讯作者：
Laskoski, Matthew
DOI：
10.1109/94.598282
发表时间：
1997-06-01
影响因子：
3.1
作者：
Dissado, LA;Dodd, SJ;Alison, JM
通讯作者：
Alison, JM
影响因子：
2.9
作者：
Vedernikov, Alexander;Nasonov, Yaroslav;Safonov, Alexander
通讯作者：
Safonov, Alexander
影响因子：
3.2
作者：
Wang, Honghua;Liu, Xiaoqing;Xian, Ming
通讯作者：
Xian, Ming