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| 振动作用对PS和PVC微孔塑料泡孔结构影响的研究 | |
| 引用本文： | 朱文利,周南桥,彭响方,王文治,湛丹.振动作用对PS和PVC微孔塑料泡孔结构影响的研究[J].塑料工业,2006,34(8):35-37,46. |
| 作者姓名： | 朱文利 周南桥 彭响方 王文治 湛丹 |
| 作者单位： | 1. 华南理工大学聚合物新型成型装备国家工程研究中心,聚合物成型加工工程教育部重点实验室,广东,广州,510640;广东顾地塑胶股份有限公司技术中心,广东,顺德,528303 2. 华南理工大学聚合物新型成型装备国家工程研究中心,聚合物成型加工工程教育部重点实验室,广东,广州,510640 3. 广东顾地塑胶股份有限公司技术中心,广东,顺德,528303 |
| 基金项目： | 广东省企业科技创新项目 |
| 摘 要： | 以超临界CO2为发泡剂，用动态发泡实验装置制备了PS和PVC微孔塑料，通过扫描电镜照片观察和研究了振动作用对PS和PVC微孔塑料泡孔结构的影响。结果表明，当剪切速率较低时，在PS发泡过程中施加较弱的振动作用即可显著提高泡孔密度，减小泡孔直径；而在PVC发泡过程中，只有施加相对较强的振动作用才能达到同样的效果。当剪切速率较高时，不论何种发泡体系，施加较弱的振动作用可以改善泡孔的形态；而施加较强的振动作用可能会产生较大的剪切热和脉动剪切应力，从而破坏泡沫的微孔结构。 |
| 关 键 词： | 微孔塑料 聚苯乙烯 聚氯乙烯 振动 |
| 文章编号： | 1005-5770（2006）08-0035-03 |
| 收稿时间： | 2006-05-22 |
| 修稿时间： | 2006-05-22 |
Study on Effects of Vibration on Cell Structure of PS and PVC Microcellular Plastics |
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| ZHU Wen-li,ZHOU Nan-qiao,PENG Xiang-fang,WANG Wen-zhi,ZHAN Dan.Study on Effects of Vibration on Cell Structure of PS and PVC Microcellular Plastics[J].China Plastics Industry,2006,34(8):35-37,46. | |
| Authors: | ZHU Wen-li ZHOU Nan-qiao PENG Xiang-fang WANG Wen-zhi ZHAN Dan |
| Affiliation: | 1. National Eng. Research Center of Novel Equipment for Polymer Processing, Key Lab. of Polymer Processing Eng., Ministry of Education, South China University of Technology, Guangzhou 510640, China; 2. Technology Center of Guangdong Goody Plastics Co., Ltd. Shunde 528303, China |
| Abstract: | PS and PVC microcellular plastics were prepared on a dynamic foaming experimental setup, with supercritical CO2 as foaming agent, and the effect of vibration on the cell structure of the prepared microcellular plastics was observed and studied by means of SEM. The results showed when the shear rate was low, the cell density increased and the cell diameter decreased significantly by applying a relative weak vibration to the PS foaming, but for PVC foaming, a relative strong vibration should be applied. When the shear rate was high, the cell morphology could be improved by applying a weak vibration, no matter what the foaming system was. However, high shear heat and oscillatory shear stress would be generated by strong vibration and the microstructure of foams might be destroyed thereby. |
| Keywords: | Microcellular Plastics PS PVC Vibration |
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