<i>Ab initio</i> molecular dynamics of insulating paper: Mechanism of insulating paper cellobiose cracking at transient high temperature

Abstract Oil-impregnated paper is the most widely used insulating material for power transformers. Power transformers inevitably generate a lot of heat during operation. Among them, thermal aging one main forms paper. In this study, ab initio molecular dynamics method based on density functional theory to simulate cracking mechanism cellobiose under transient high temperature. The results show that relatively stable at 343 K, motility enhanced 1,800 starts decompose 2,400 and new characteristic products are formed 3,000 K. include CO, H 2 O, CH 3 OH, , 4 . These can represent degree Therefore, it necessary explore caused by