화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.16, No.5, 404-410, July, 2008
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Preparation and Characterization of Polypropylene/Waste Ground Rubber Tire Powder Microcellular Composites by Supercritical Carbon Dioxide
Zhen Xiu Zhang1, Sung Hyo Lee1, Jin Kuk Kim1, †, Shu Ling Zhang1, 2, and Zhen Xiang Xin1, 3
  • 1School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701, Korea
  • 2Alan G. MacDiarmid Lab, College of Chemistry, Jilin University, Changchun, 130012,, Korea
  • 3Key Laboratory of Rubber-Plastics (QUST) of Ministry of Education, Qingdao University of Science and Technology, Qingdao, 266042, Korea
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In order to obtain ‘value added products’ from polypropylene (PP)/waste ground rubber tire powder(WGRT) composites, PP/WGRT microcellular foams were prepared via supercritical carbon dioxide. The effects of blend composition and processing condition on the cell size, cell density and relative density of PP/WGRT microcellular composites were studied. The results indicated that the microcellular structure was dependent on blend composition and processing condition. An increased content of waste ground rubber tire powder (WGRT) and maleic anhydride-grafted styrene-ethylene-butylene-styrene (SEBS-g-MA) reduced the cell size, and raised the cell density and relative density, whereas a higher saturation pressure increased the cell size, and reduced the cell density and relative density. With increasing saturation temperature, the cell size increased and the relative density decreased, whereas the cell density initially increased and then decreased.
Keywords:microcellular composites;morphology;recycling;waste ground rubber tire powder;supercritical carbon dioxide
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