Effects and optimization of processing parameters in water‐assisted injection molding
Effects and optimization of processing parameters in water‐assisted injection molding
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DOI：
10.1002/app.27560
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发表时间：
2008-04
影响因子：
3
通讯作者：
Hanxiong Huang;Zhi-Wu Deng
中科院分区：
文献类型：
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作者：
Hanxiong Huang;Zhi-Wu Deng
在本实验室新研制的水辅助注射成型聚丙烯弯管实验装置上进行了水辅助注射成型聚丙烯弯管的实验研究。首先，四个工艺参数，包括短射尺寸，熔体温度，注水延迟时间，和水的压力，进行了研究，在它们对水的渗透长度和弯曲管的剩余壁厚的影响。其次，田口正交表，S/N比，方差分析，以找到最佳的工艺参数，导致最大的水渗透长度。最后，利用差示扫描量热法分析了弯管流道两端结晶行为的差异。在靠近进水口的位置，中间层样品的结晶度高于外层和内层样品。外层、中层和内层样品在水道末端附近的熔融峰和结晶度相似。© 2007威利期刊公司应用聚合物科学杂志，2008年
Experiments of water-assisted injection molded polypropylene curved pipe were carried out on newly developed equipment in this lab. First, four processing parameters, including short-shot size, melt temperature, water injection delay time, and water pressure, were investigated in terms of their effects on the water penetration length and residual wall thickness of curved pipe. Second, an orthogonal array of Taguchi, the S/N ratio, and ANOVA were utilized to find the optimal processing parameters resulting in maximum water penetration length. Finally, the crystallization behavior difference between the beginning and the end of the water channel of the curved pipe was analyzed using differential scanning calorimetry. It was interesting to find that the crystallinity of sample from the middle is higher than those from both outer and inner layers at position near the water inlet. The samples taken from the outer layer, middle, and inner layer show similar melting peak and crystallinity at position near the end of water channel. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008