캐필러리 레오미터를 이용한 고분자의 PvT 측정 방법
PvT measruement method of polymer using capillary rheometer
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초록
In injection molding processes, the property of molten resin should be characterized accurately. Among severalproperties, the PvT state is the most important one, since it affects the shrinkage, warpage, molded weight, and the partdensity. Thus, the PvT data is crucial to the simulation of the injection molding process. This work shows how such ameasurement can be performed for a semi-crystalline and amorphous polymers. The PvT measurement has been conductedusing a capillary rheometer using a suitable accessory that blocks the capillary. The results have shown that the PvT datacan be obtained using such a rheometer and then the PvT coefficients of the Tait equation can be reached.
Abstract
In injection molding processes, the property of molten resin should be characterized accurately. Among severalproperties, the PvT state is the most important one, since it affects the shrinkage, warpage, molded weight, and the partdensity. Thus, the PvT data is crucial to the simulation of the injection molding process. This work shows how such ameasurement can be performed for a semi-crystalline and amorphous polymers. The PvT measurement has been conductedusing a capillary rheometer using a suitable accessory that blocks the capillary. The results have shown that the PvT datacan be obtained using such a rheometer and then the PvT coefficients of the Tait equation can be reached.
참고문헌 (6)
- Stanek, M., "Optimization of injection molding process", International journal of mathematics and computers in simulation, 5(5), pp.413~421 (2011)
- Chang, R. Y., "Experimental and theoretical studies of shrinkage, warpage, and sink marks of crystalline polymer injection molded parts", Polymer Engineering & Science, 35(15), pp.1222~1230 (1995)
- Zoller, P., "A study of the pressure-volumetemperature relationships of four related amorphous polymer : polycarbonate, polyarylate, phenoxy, and polysulfone", Journal of Polymer Science (Polymer Physics Edition), 20(8), pp.1453~1464 (1982)
- Wunderlich, B., "In Thermal Characterization of Polymeric Materials" (1981), Academic Press
- Jong-Chan Won, "PvT-Behavior for Analysis of Polymer Properties", Polymer Science and Technology, 12(5), pp.764~775 (2001)
- 김성훈, "PVT 측정을 통한 비결정 고분자 ABS와 SAN의 압축률과 체적팽창 연구", 한국섬유공학회지, 44(5), pp.268~273 (2007), 한국섬유공학회