Combined Analysis of Rheological Properties and PVT Relationships of Polypropylene for Injection Molding

doi:10.19491/j.issn.1001-9278.2012.06.011

Abstract

Abstract: The rheological properties and pressure-volume-temperature（PVT） relationships of polypropylene(PP) were studied using seven-parameter-Cross-WLF viscosity model and modified two-domain Tait state equation. Under defined molding conditions, the whole injection molding process could be described. The theoretical volumetric shrinkage of PP was calculated to be 5.58 %, which was approximate to the practical measured value of 5.46%.

Key words: polypropylene, injection molding, rheological property, pressure-volume-temperature relationship, shrinkage

CLC Number:

TQ322.2

SUN Jin . Combined Analysis of Rheological Properties and PVT Relationships of Polypropylene for Injection Molding[J]. China Plastics, 2012, 26(06): 62-66 .

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Combined Analysis of Rheological Properties and PVT Relationships of Polypropylene for Injection Molding

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