开发了车载高光蓝牙快速热响应实验模具和动态模温控制系统,基于单因子实验和Taguchi理论,以无定形ABS塑料为实验材料,研究了模具温度对高光注塑成型(Rapid Heat Cycle Molding,RHCM)制品收缩的影响规律.结果表明:适当升高模具温度可以有效降低制品收缩,最佳模温应控制在塑料热变形温度附近;在高模温作用下,熔体温度(低于210℃)和注射压力(低于100 MPa)较低时,制品收缩性态较为复杂,当二者高于该临界值之后则趋于稳定减小或大体不变状态;保压压力、保压时间和冷却时间的影响呈“V”型小幅波动,且均在塑料热变形温度附近达极小值;模温设定条件下,保压压力对制品收缩影响最大,其次是保压时间,冷却时间影响最小,熔体温度和注射压力的影响效应相当.
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