| 超临界CO2对发泡PP/木粉复合材料性能的影响 |
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| 引用本文： | 张桂新,崔中纹,任佳伟,刘涛,郭卫红.超临界CO2对发泡PP/木粉复合材料性能的影响[J].医学教育探索,2016(1):58-64,148. |
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| 作者姓名： | 张桂新 崔中纹 任佳伟 刘涛 郭卫红 |
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| 作者单位： | 华东理工大学材料科学与工程学院, 特种功能高分子材料及其相关技术教育部重点实验室, 上海 200237,华东理工大学材料科学与工程学院, 特种功能高分子材料及其相关技术教育部重点实验室, 上海 200237,华东理工大学材料科学与工程学院, 特种功能高分子材料及其相关技术教育部重点实验室, 上海 200237,华东理工大学化工学院, 上海 200237,华东理工大学材料科学与工程学院, 特种功能高分子材料及其相关技术教育部重点实验室, 上海 200237;安徽省石油化工新材料协同创新中心, 安徽 安庆 246011 |
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| 基金项目： | 上海市产学研合作项目(沪CXY-2014-023);江苏省科技成果转化项目(SBA2014010034);江苏省国际合作项目(BZ2013010) |
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| 摘 要： | 以超临界CO2为发泡剂,对聚丙烯(PP)/木粉复合材料进行快速降压发泡,并通过扫描电镜进行泡孔形貌观测。通过控制变量法,研究了发泡温度、饱和压力、降压速率和木粉质量分数对发泡体系泡孔形貌的影响,从超临界CO2溶解过程、泡孔成核过程以及泡孔孔径增大过程三方面分别进行了分析,并结合反应条件研究了泡孔密度及泡孔孔径的变化规律及其机理。
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| 关 键 词： | 木塑复合材料 超临界CO2 发泡机理 泡孔形貌 |
| 收稿时间： | 2015/10/8 0:00:00 |
Foaming of PP/Wood Flour Composite Using Supercritical CO2 |
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| ZHANG Gui-xin,CUI Zhong-wen,REN Jia-wei,LIU Tao and GUO Wei-hong.Foaming of PP/Wood Flour Composite Using Supercritical CO2[J].Researches in Medical Education,2016(1):58-64,148. |
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| Authors: | ZHANG Gui-xin CUI Zhong-wen REN Jia-wei LIU Tao and GUO Wei-hong |
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| Institution: | Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, Shanghai 200237, China,Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, Shanghai 200237, China,Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, Shanghai 200237, China,School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China and Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education, School of Materials Science and Engineering, Shanghai 200237, China;Anhui Collaborative Innovation Center for Petrochemical New Materials, Anqing 246011, Anhui, China |
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| Abstract: | With supercritical CO2 as foaming agent,polypropylene/wood flour composites were foamed by quick decreasing pressure method and the cell morphology was observed by transmission electron microscopy.By controlling the variable factors,the effects of foaming temperature,saturation pressure,decreasing pressure rate and the content of wood flour on cell morphology of foaming system were analyzed considering supercritical CO2 dissolution,the cell nucleation and growth.Cell density and pore size were obtained by scanning electron microscopy,and their changing rule and mechanism were investigated by considering the influence of different test conditions for supercritical CO2 foaming PP/wood powder system. |
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| Keywords: | wood-plastic composite materials supercritical CO2 foaming mechanism morphology of cell |
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