PC-HT 소재의 사출압력에 압력의존계수가 미치는 영향

다국어 초록 (Multilingual Abstract)

Injection molding analysis uses the Cross-WLF viscosity model to predict injection pressure. However, the high heat-resistant PC-HT (Covestro: APEC 2097) material does not have the pressure dependence constant D3, which is one of the viscosity model coefficients. Therefore, there is a problem that the injection pressure is predicted to be lower than the actual result. In this study, we try to estimate the appropriate pressure dependence constant D3 of the Cross-WLF viscosity model in order to increase the accuracy of predicting the injection pressure of PC-HT material. We estimated the value of the pressuredependent constant by applying the concept of a free volume model to examine the cause of the decrease in fluidity and increase in injection pressure of PC-HT. In the injection molding analysis, it was confirmed that the difference between the actual and predicted injection pressure was very large when the D3 of the Cross-WLF viscosity model was not applied. The injection pressure applying the estimated pressure dependence constant was able to obtain the predicted result within about 10% of the actual result.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 자유 체적Free Volume)
• 3. Cross-WLF 모델의 압력의존계수
• 4. PC-HT 사출압력 예측
• 5. 결론
• References