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| PP/超临界CO2连续挤出发泡成型 | |
| 引用本文： | 王明义,王中雅,周南桥.PP/超临界CO2连续挤出发泡成型[J].合成树脂及塑料,2011,28(3):13-16. |
| 作者姓名： | 王明义 王中雅 周南桥 |
| 作者单位： | 1. 郑州轻工业学院机电工程学院,河南,郑州,450002 2. 河南工业职业技术学院,河南,南阳,473009 3. 华南理工大学聚合物成型加工工程教育部重点实验室,聚合物新型成型装备国家工程研究中心,广东,广州,510640 |
| 摘 要： | 以超临界CO2为发泡剂,在连续挤出发泡过程中研究了超临界CO2用量对高熔体强度均聚聚丙烯(PP)发泡成型过程的影响.随着超临界CO2用量的增加,发泡挤出机口模压力降低,试样发泡倍率降低,泡孔尺寸变小,泡孔密度提高.在w(CO2)为3%,5%时,得到发泡倍率最高为13左右的PP发泡材料.w(CO2)为7%,发泡温度为12... |
| 关 键 词： | 聚丙烯 超临界二氧化碳 发泡 挤出 |
Extrusion foaming of polypropylene with supercritical carbon dioxide |
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| Wang Mingyi,Wang hongya,Zhou Nanqiao.Extrusion foaming of polypropylene with supercritical carbon dioxide[J].China Synthetic Resin and Plastics,2011,28(3):13-16. | |
| Authors: | Wang Mingyi Wang hongya Zhou Nanqiao |
| Affiliation: | Wang Mingyi~1,Wang Zhongya~2,Zhou Nanqiao~3 (1.Mechanical and Electrical Engineering Institute,Zhengzhou University of Light Industry,Zhengzhou 450002,China,2.Henan Polytechnic Institute,Nanyang 473009,3.Key Laboratory of Polymer Processing Engineering,Ministry of Education,National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology,Guangzhou 510640,China) |
| Abstract: | A kind of high melt strength homopolypropylene foaming material was prepared with supercritical CO_2 as blowing agent.The effect of supercritical CO_2 content on the foaming process was studied in a continuous extrusion foaming process.The die pressure of the foaming extruder,expansion ratio and cell size of the samples decreased while the cell population density increased with the augmentation of the supercritical CO_2 content.Polypropylene(PP) foams with expansion ratio as high as 13 were obtained when th... |
| Keywords: | polypropylene supercritical carbon dioxide foam extrusion |
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