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| 二次注射成型聚丙烯中剪切诱导连接界面的形态演变 | |
| 引用本文： | 阎博文,黄建,蒋根杰,吴宏,郭少云. 二次注射成型聚丙烯中剪切诱导连接界面的形态演变[J]. 高分子通报, 2009, 0(11) |
| 作者姓名： | 阎博文 黄建 蒋根杰 吴宏 郭少云 |
| 作者单位： | 高分子材料工程国家重点实验室,四川大学高分子研究所,成都,610065 |
| 基金项目： | 国家自然科学基金项目，国家重点基础发展规划项目 |
| 摘 要： | 研究了剪切作用对二次注射成型聚丙烯连接界面形态演变的影响.利用偏光显微镜研究了连接界面距离浇口不同区域和不同位置的形态差异,探索了连接界面形态的演变规律,通过改变注射压力和注射速度对其加以验证,并通过DSC分析证实了形态结构的差异.研究表明:剪切作用对连接界面形态的影响显著,在高剪切作用下分子链沿流动方向取向程度高,不利于其规整排列并沿垂直界面方向生成横晶;可以通过注射压力和注射速度来控制连接界面的剪切作用,从而得到具有完善横晶结构的连接界面形态. |
| 关 键 词： | 二次注射成型 连接界面 剪切 形态演变 |
Shear Induced Interfacial Morphology Development of Polypropylene During over-Injection Molding |
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| YAN Bo-wen,HUANG Jian,JIANG Genjie,WU Hong,GUO Shaoyun. Shear Induced Interfacial Morphology Development of Polypropylene During over-Injection Molding[J]. Polymer Bulletin, 2009, 0(11) | |
| Authors: | YAN Bo-wen HUANG Jian JIANG Genjie WU Hong GUO Shaoyun |
| Affiliation: | YAN Bo-wen,HUANG Jian,JIANG Genjie,WU Hong,GUO Shao-yun(The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065,China) |
| Abstract: | The effects of shear on interfacial morphology evolution of over-injection molded polypropylene were investigated in this article.The interfacial morphologies at different distance from the gate under different shear effects,induced by different injection pressure and injection speed,was observed by polarized light microscopy(PLM) and differential scanning calorimetry(DSC).It was found that injection pressure played more predominant role in the interfacial morphology development than injection speed.The PLM... |
| Keywords: | Over-Injection molding Interface Shear Morphology development |
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