Effect of the $CO_2$ on Viscosity Change in Continuous Microcellular Foaming Processing

초미세 발포 연속공정을 위한 $CO_2$ 사용이 재료의 점도변화에 미치는 영향

The first thing in developing injection molding and extrusion with microcellular foaming process is to get a grip on one phase state's rheology of gas and polymer solution. Understanding rheology is essential to design mold or die. and it is so important to control the condition of process. Also, this data is got the utmost out of simulation carrying out. In this paper, we will see the measurement of rheology in one phase that mixed polypropylene which contains talc with carbon dioxide of super critical fluid state, and will compare its result with the simulation result.