摘要
研究了聚丙烯在不同温度下的剪切流变性能和压力-比容-温度(PVT)关系,并分别采用7参数的Cross-WLF黏度模型和修正的双域Tait状态方程拟合其变化曲线。在确定注塑工艺参数的条件下,通过PVT状态曲线描述了整个注射成型过程,计算出其理论体积收缩率为5.58%,并与实际注塑样条测量所得的收缩率5.46%相一致。
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 %.
出处
《中国塑料》
CAS
CSCD
北大核心
2012年第6期62-66,共5页
China Plastics
关键词
聚丙烯
注射成型
流变性能
压力-比容-温度关系
收缩率
polypropylene
injection molding
rheological property
pressure-volume-temperature relationship
shrinkage
