Abstract

Polycarbonate is a widely used thermoplastic engineering plastic with excellent properties. Using triphosgene and Bisphenol A as raw materials, polycarbonate is synthesized by interfacial polycondensation. The effects of catalyst dosage, molar ratio of raw material, reaction temperature and reaction time 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 50000. The glass transition temperature of the product is detected to be 148.5 °C by dilatometer. The polycarbonate synthesized by the new method meets the quality requirements.

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