Abstract
Polycarbonate is a widely used thermoplastic engineering plastic with excellent properties. In this paper, bisphenol A and diphenyl carbonate are used as raw materials to synthesize polycarbonate by melt transesterification. The effects of catalyst type, catalyst dosage, molar ratio of raw materials and heating rate, reaction temperature, reaction time and vacuum on the molecular weight of the product are investigated, and the optimal reaction conditions are obtained. The structure of the product is verified by infrared absorption spectroscopy. The rotary viscometer measures the intrinsic viscosity of the sample and calculates the viscosity average molecular weight of the sample to be 30000. The glass transition temperature of the product is detected to be 150.5°C by dilatometer.
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