Study on Cure System of Fluorine Rubber with Low Compression Set

The application of curing agent bisphenol-AF and accelerator BPP to fluorine rubber was investigated.The resualts showed that with the increase of BPP,the scorch time shorted,the torque was constant,the optimum cure time shorted,and the influence on the hardness,elongation,tensile strength and tear strength of the compound was little,but with the increase of bisphenol-AF,the scorch time extended,the torque increased,the optimum cure time prolonged,the hardness and tensile strength of the compound increased,but the tear strength and the elongation decreased,the change rates of hardness and tensile strength after heat aging increased and the change rates of elongation and compression set decreased.The production efficiency would enhance and the physical property of the compound would improve after adjust the concentration and compounding ratio of bisphenol-AF and BPP.