考虑分子链段长度(MCL),修正Cross-Law宏观黏度模型,建立反映微尺度流动特性的MCL微观黏度模型.通过PP材料80 μm,70μm和200μm薄板注塑填充率实验和ABS材料边长200μm,300 μm方柱注塑压力差实验,验证了新建微观黏度模型MCL的有效性和精度.同时发现随着特征尺寸的减小,薄板注塑的MCL微观黏度模型的模拟填充率要比宏观黏度模型更加趋近于实验数据,特征尺寸为70μm时平均误差降低为12.12％;在压力差实验中,随着剪切速率的提高,MCL微观黏度模型的模拟压力差更趋近于实测数据.
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