Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
J Hazard Mater. 2014 Apr 15;270:137-43. doi: 10.1016/j.jhazmat.2014.01.052. Epub 2014 Feb 5.
In this work, asbestos tailings were recycled and used as reinforcing fillers to enhance the mechanical properties of polypropylene (PP). A silane coupling agent was used to chemically modify the asbestos tailings to increase the compatibility between asbestos tailings and polypropylene matrix. Both raw and chemically treated asbestos tailings with different loading levels (from 3 to 30 wt%) were utilized to fabricate composites. Mechanical properties of these composites have been investigated by dynamic mechanical analysis, tensile test and notched impact test. Results showed that hybridization of asbestos tailings in the composites enhanced the mechanical properties of neat PP evidently, and treated asbestos tailings/PP composites yielded even better mechanical properties compared with those of raw asbestos tailings/PP composites. This recycling method of asbestos tailings not only reduces disposal costs and avoids secondary pollution but also produces a new PP-based composite material with enhanced mechanical properties.
在这项工作中，石棉尾矿被回收并用作增强填料，以提高聚丙烯（PP）的机械性能。使用硅烷偶联剂对石棉尾矿进行化学改性，以增加石棉尾矿与聚丙烯基体之间的相容性。利用不同负载水平（3 至 30 重量%）的原始和化学处理过的石棉尾矿来制备复合材料。通过动态力学分析、拉伸试验和缺口冲击试验研究了这些复合材料的力学性能。结果表明，复合材料中石棉尾矿的杂化明显提高了纯 PP 的力学性能，且经处理的石棉尾矿/PP 复合材料的力学性能优于未经处理的石棉尾矿/PP 复合材料。这种石棉尾矿的回收方法不仅降低了处理成本，避免了二次污染，而且还生产出一种具有增强机械性能的新型基于 PP 的复合材料。
