ผลกระทบของความร้อนและเวลาต่อคุณสมบัติของพอลิคาร์บอเนตผสม (Heat and Time Effect on Properties of Polycarbonate Composites)

Abstract

Composite of polycarbonate is widely used in various applications as parts and products, such as parts in Hard Disk Drive. It is known that heat usually affects in deterioration of polycarbonate composite properties.
The deterioration may be resulted from changing of its structure and yield to shorter life time. However, mechanism of heat effect to life time of part or product is still unclear. Therefore, aim of this study was to study effect of temperature and time to properties of polycarbonate composite. Polycarbonate composite specimen was baked at 75 90 105 120 degree Celsius for 1/4 3/4 4 8 12 and 24 hours. It was found that increasing of treatment time and temperature results the changing of the composite properties from ductile to brittle material. From thermal analysis, it was found that the composite structure and composition not changed with increasing of treatment time and temperature. It was proposed that heat may result the interdiffusion in polymer matrix and lead to more order of its structure.