| 微发泡注塑成型PC制件的表面缺陷及形态分析 |
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| 引用本文： | 张亚涛,李海梅,黄世欣,张雨标.微发泡注塑成型PC制件的表面缺陷及形态分析[J].高分子材料科学与工程,2010(4):127-130. |
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| 作者姓名： | 张亚涛 李海梅 黄世欣 张雨标 |
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| 作者单位： | 郑州大学橡塑模具国家工程研究中心;台湾清云大学机械系; |
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| 摘 要： | 微发泡注塑成型制品常有漩涡状流痕和银纹两类表面缺陷。漩涡状流痕与均相溶液的流动形态关系密切,多在浇口附近;而银纹多在远离浇口处。文中利用扫描电子显微镜(SEM)对微发泡注塑成型聚碳酸酯(PC)制品的漩涡状流痕、银纹及泡孔形态进行观察,发现微孔形态和表面缺陷之间存在如下关系:漩涡状流痕对应的气泡剪切变形较小,而银纹相关的气泡剪切变形较大;根据气泡SEM的形态,银纹可细分为银带纹、银丝纹。剪切变形大、不破裂气泡表面形成银带纹,破裂则形成银丝纹。
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| 关 键 词： | 微发泡注塑成型 漩涡状流痕 银纹 |
Surface Defects and Morphology of Microcellular Injection Molded PC Parts |
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| ZHANG Ya-tao,LI Hai-mei,HWANG Stanley,ZHANG Yu-biao.Surface Defects and Morphology of Microcellular Injection Molded PC Parts[J].Polymer Materials Science & Engineering,2010(4):127-130. |
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| Authors: | ZHANG Ya-tao LI Hai-mei HWANG Stanley ZHANG Yu-biao |
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| Affiliation: | 1. National Engineering Research Center for Advanced Polymer Processing Technology;Zhengzhou University;Zhengzhou 450002;China;2. Department of Mechanical Engineering;Ching Yun University;Zhongli 45002806;China |
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| Abstract: | Swirl marks and silver streaks are two popular surface defects of microcellular injection molded parts. Both swirl marks and silver streaks relate to flow state of single-phase solution that is made of polymer melt and supercritical fluid (SCF). Swirl marks usually locate near gate and silver streaks appear the filling end. Based on scanning electron microscope (SEM) experimental results of microcellular injection molded polycarbonate(PC) parts,the swirl marks,silver streaks and their morphology were studie... |
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| Keywords: | microcellular injection molding swirl marks silver streaks |
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