通过三点弯曲蠕变试验,研究了聚丙烯木塑复合材料在23℃左右室内环境五种应力水平下的短期蠕变行为,并采用四元件模型对其蠕变行为进行模拟.依据时间-温度-应力等效原理,以5 MPa为参考应力水平,将其它四种应力水平下的蠕变曲线移位成5 MPa应力水平下的主曲线,从而可以预测聚丙烯木塑复合材料在5 MPa应力水平下大约3年内的蠕变行为.
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