Transactions of China Electrotechnical Society  2015, Vol. 30 Issue (10): 330-337    DOI:
Current Issue| Next Issue| Archive| Adv Search |
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

Download: PDF (691 KB)   HTML (1 KB) 
Export: BibTeX | EndNote (RIS)      
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.
Key wordsInsulation paper      thermal stabilizer      anti-aging      synergistic effect      computational quantum chemistry      molecular dynamics     
Received: 08 October 2013      Published: 29 June 2015
PACS: TM215  
  O641  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:   
URL:  
https://dgjsxb.ces-transaction.com/EN/     OR     https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I10/330
Copyright © Transactions of China Electrotechnical Society
Supported by: Beijing Magtech