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《Environmental Science & Technology》 2010-05
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Interpenetrating Polymer Networks Constituted by Scrap Rubber Powder and Polyurethane,Polystyrene

QIU Xian-hua1,YANG Li1,QIU Qing-hua2 (1.School of Enviroment and Chemistry Engineering,Nanchang Institute of Aeronautical Technology,Nanchang 330063; 2.College of Materials Science and Engineering,South China University of Technology,Guangzhou 510640)  
The pyrolytic gas chromatography,Fourier transform infrared spectrometry and thermogravimetric analysis were carried on to determine the ingredient of scrap rubber powder,and the conjugated three-component polyurethane /polystyrene /scrap rubber powder semi-interpenetrating polymer networks was prepared to test the mechnical performance. Results indicated that the natural rubber,the butadiene rubber and the styrene butadiene rubber were contained in the scrap rubber powder,which the content of the natural rubber was richer than that of the butadiene rubber and the styrene butadiene rubber with three kind of rubber content ratio being natural rubber:butadiene rubber:butadiene styrene rubber of 12∶6.2∶1. The rubber contained in the scrap rubber powder was 49.61%,the carbon black being 18.89%,the inorganic padding being 21.01%. The tensile strength and the elongation at break appeared the maximum value with the PS content 40%,the permanent set and the hardness were enlarged gradually along with the PS proportion in the system increasing. The vitrification transition temperature decided by differential scanning calorimetry and the scanning electron microscope analysis indicated that the polystyrene,which occurred as public component,interpenetrated with polyurethane and scrap rubber powder,which improved the property of whole material.
【Fund】: 江西省科技厅攻关课题(CB200402082)
【CateGory Index】: TQ330.1
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