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자유부피이론을 이용한 불포화 폴리에스터 수지의 화학유변학 모델식의 수립

A Chemorheological Model for Curing of Styrene-unsaturated Polyester Resin Using the Free Volume Theory

황진구 노충근 황인석 이승종

Hwang JG Row CG Hwang I Lee SJ

HWAHAK KONGHAK, December 1992, 30(6), 664-672(9), NONE

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Abstract

자유부피이론을 이용하여 열경화성 고분자의 경화반응에 의한 점도변화를 예측하는 새로운 화학유변학 모델식을 수립하였다. 이 호학유변학 모델식을 통하여 불포화 폴리에스터 수지의 등온 및 비등온경화반응에 의한 점도변화를 예측하였으며, 모델식에 의한 계산결과가 실험결과를 잘 모사함을 알 수 있었다. 또한, 일정한 가열속도하에서의 비등온경화반응에서 최소점도와 젤화점에 이르는 경화반응시간과 온도를 측정하고, 이를 화학유변학 모델식에서 구한 계산값과 비교한 결과 모델식이 실험결과를 잘 모사함을 알 수 있었다.

A new chemorheological model was established to describe the viscosity change of thermosetting polymers during curing reactions using the free volume theory. Model predictions of the viscosity changes in both isothermal and nonisothermal curing reactions of styrene-unsaturated polyester resin agreed well with experimental results. The predicted values of temperature and curing time at the minimum viscosity and at the gelation point during nonisothermal curing reactions of styrene-unsaturated polyester resin agreed well with experimental results. The predicted values of temperature and curing time at the minimum viscosity and at the gelation point during nonisothermal curing reactions with constant heating rates also agreed well with experimental results.

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