Combined Modification of Asphalt by Waste Polystyrene and Ethylene - vinyl acetate Packaging Materials
The white pollution caused by waste polymer in packaging materials not only contributes the serious environment problems, but also leads to huge waste of resources. In order to address this problem and promote the development of the packaging industry, we have to pay more attentions on the recycle of waste polymer packaging materials and research on new recycling techniques. In the present work, for the consideration of the environmental and economic issues, we used waste EPS and EVA, instead of ordinary polymer modifiers, to carry out the modification of paving asphalt by a combined technology. The combined modifications of waste polymer solved the problems of white pollution and reduce the modification costs of asphalt.The results showed an increase in the softening point of asphalt, decrease in penetration, and significant improvement on the low temperature ductility, with the modification of asphalt. The overall properties of the modified asphalt have been improved significantly. The FTIR spectrum and the microstructure analysis of the asphalt indicated that, the swell effect of the waste polymer evenly dispersed in the asphalt by high-speed shearing and the adsorption process of the aromatic compositions in EPS were the main reasons for the improvement of performance.
Packaging Waste-EPS Waste-EVA Asphalt Combined modification
Changqing Fang Maorong Zhang Tiehu Li
The Faculty of Printing and Packaging Engineering Xian University of Technology Xian, P.R. China School of Materials Science and Engineering Northwestern Polytechnical University Xian, P.R. China
国际会议
上海
英文
4206-4209
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）