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首页> 外文期刊>Journal of Applied Polymer Science >Experimental study on the penetration interfaces of pipes with different cross-sections in overflow water-assisted coinjection molding
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Experimental study on the penetration interfaces of pipes with different cross-sections in overflow water-assisted coinjection molding

机译：溢水辅助共注射成型中不同横截面管材渗透界面的实验研究

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摘要

The residual wall thicknesses (RWT) of the skin and the inner layers are important quality indicators of water-assisted co-injection molding (WACIM) parts. The influences of the shape of the cavity cross section and the processing parameters, including the water pressure, water delay time, inner melt temperature, and inner melt flow rate, on the penetration of the inner melt and water were explored via experiments. The results showed that the shape of the penetration section of the inner melt was closer to the cavity section with round corners, while that of the water ended up being round. Both the penetration ratios of the inner melt and the water increased proportionally with increasing circle ratio. Both the minimum values of the total RWT and the inner melt RWT increased with increasing circle ratio. Both the maximum values of the total RWT and the inner melt RWT increased with increasing Max_D, which is the maximum distance between the inscribed circle center and the wall. Both the penetration ratios of the inner melt and the water increased with increasing water pressure, decreased with increasing water delay time, and increased with increasing inner melt flow rate and increasing inner melt temperature. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42866.
机译：皮肤和内层的残留壁厚（RWT）是水辅助共注射成型（WACIM）零件的重要质量指标。通过实验探讨了腔体横截面的形状和工艺参数（包括水压，水延迟时间，内部熔体温度和内部熔体流动速率）对内部熔体和水渗透的影响。结果表明，内部熔体的穿透部分的形状更接近于具有圆角的空腔部分，而水最终变成了圆形。内熔体和水的渗透率均随圆环比的增加而成比例地增加。总RWT和内部熔体RWT的最小值都随着圈数比的增加而增加。总RWT和内部熔体RWT的最大值均随Max_D的增加而增加，Max_D是内切圆心与壁之间的最大距离。内熔体和水的渗透率均随水压的升高而增加，随水延迟时间的增加而降低，并随着内熔体流速和内熔体温度的升高而增加。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，132，42866。

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