Preparation and thermal‐mechanical property evaluation of cellulose insulation paper with differing nano‐SiC contents

Cellulose insulation paper is the main component of oil-paper systems in oil-immersed transformers. However, poor thermal conductivity and stability cellulose can lead to ageing. It critical address this issue by improving performance cellulose, nano-SiC-modified models were established molecular simulation, while nano-SiC composite papersheets prepared based on simulation results, effects different contents investigated. Macroscopically, doping particles enhance cellulose; compared with unmodified papersheet, tensile strength modified are increased 44.3% 42.8%, respectively. The degree polymerisation papersheet decreased more slowly than that under accelerated ageing, showing has better anti-ageing properties. Microscopically, addition nano-SiC, simulations showed mean square displacement decreases dramatically distribution free volume becomes difficult disperse, which corresponds decrease porosity experiments. As a result, research provides way for thermal-mechanical properties practical application significance.