Study on the Synergistic Anti-Aging Effect of Composite Thermal Stabilizers on the Insulation Paper by Molecular Modeling
Liao Ruijin1, Wu Weiqiang1, Nie Shijun2, Liu Tuan1, Lü Cheng1, Zhang Shuqi3
1. State Key Laboratory of Power Transmission Equipment & System Security and New TechnologyChongqing University Chongqing 400044 China; 2. Changsha Electric Power Bureau Changsha 410000 China; 3. China Electric Power Research Institute Beijing 100192 China
Abstract：In order to reveal the micro mechanism of composite thermal stabilizers added in insulation paper on synergistic anti-aging characteristics during aging process, considering dicyan- diamide and melamine as the thermal stabilizers, thermal agents, β-D-glucopyranose, water molecule and small molecule acids which are main substance during aging process were computed with quantum chemistry method, thus the reactivity of different molecules was investigated by energy gaps of frontier orbital. Besides, four cellulose models containing water and acids which were added none, either and both of two thermal stabilizers were established, system variations of different modified models were investigated from two aspects, namely, number of hydrogen bonding and interactive energy between water, formic acid molecule and the cellulose molecules. The results show that: compared with β-D- glucopyranose, the reaction activity between the thermal stabilizers and water molecule, small molecule is stronger; the reaction activity between the thermal stabilizers and water molecule, small molecule acid differs, when added together, synergistic anti-aging effect could be achieved by focusing the advantages of them; the combination of dicyandiamide and melamine added in paper exists a synergistic effect in reducing the adsorption capacity of the cellulose molecules to water molecule and formic acid molecule.
廖瑞金, 吴伟强, 聂仕军, 刘团, 吕程, 张书琦. 复合热稳定剂对绝缘纸协同抗老化效应子模拟研究[J]. 电工技术学报, 2015, 30(10): 330-337.
Liao Ruijin, Wu Weiqiang, Nie Shijun, Liu Tuan, Lü Cheng, Zhang Shuqi. Study on the Synergistic Anti-Aging Effect of Composite Thermal Stabilizers on the Insulation Paper by Molecular Modeling. Transactions of China Electrotechnical Society, 2015, 30(10): 330-337.
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2015, Vol. 30 
