Correlation of heat distortion temperature and glass transition temperature of glass fiber reinforced unsaturated polyester resins and their matrix resins

doi:10.19936/j.cnki.2096-8000.20250428.013

Abstract

Abstract: Both of heat distortion temperature (T_HD) and glass transition temperature (T_g) are commonly used to characterize heat resistance of glass fiber reinforced unsaturated polyester resin matrix composites (GFRP) in lots of engineering design and applications. In this study, the suitable method of testing T_HD of GFRP were established by selecting experimental approaches. The effects of curing systems and curing conditions of resins, different fabric pattern of reinforcement and fiber content of GFRP on their T_HD and T_g are studied. The correlation between T_HD and T_g of GFRP and its matrix resin was investigated. The initial temperature of glass transition T_g,G′i and the final temperature of the glass transition T_g,G′f by the curve of storage modulus vs. temperature are defined to be applied in manufacturing, inspecting and engineering application of GFRP.

Key words: unsaturated polyester resin, GFRP, heat distortion temperature, glass transition temperature, correlation

CLC Number:

TB332

GE Ping, KONG Peng, MA Guorun, TANG Yuhang. Correlation of heat distortion temperature and glass transition temperature of glass fiber reinforced unsaturated polyester resins and their matrix resins[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(4): 103-108.

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