Nitrile rubber compounds were prepared by the addition of polyimide (PI). The effect of polyimide on thermal stability of nitrile rubber was studied. Both thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMTA) of the prepared compounds showed much better thermal stability. The onset temperature of nitrile rubber increased from 360? to 368.4?. Also glass transition temperature of nitrile rubber increased from -5? to 11.6?. This proved that the presence of polyimide in nitrile rubber matrix can increase thermal stability.

Nitrile rubber compounds were prepared by the addition of polyimide (PI). The effect of polyimide on thermal stability of nitrile rubber was studied. Both thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMTA) of the prepared compounds showed much better thermal stability. The onset temperature of nitrile rubber increased from 360? to 368.4?. Also glass transition temperature of nitrile rubber increased from -5? to 11.6?. This proved that the presence of polyimide in nitrile rubber matrix can increase thermal stability.