title: Recycling of asbestos tailings used as reinforcing fillers in polypropylene based composites.
abstract: 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.
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Wensi
authors.initials: W
authors.lastname: Zhai
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China. Electronic address: dengyuan@buaa.edu.cn.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Deng
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Hongli
authors.initials: H
authors.lastname: Gao
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, School of Material Science and Engineering, Beihang University, Beijing 100191, China.
authors.forename: Mao
authors.initials: M
authors.lastname: Li
mesh_terms: D001194:Asbestos / Q000737:chemistry*; D004548:Elasticity; D007220:Industrial Waste; D008689:Methacrylates / Q000737:chemistry; D008906:Mining; D011126:Polypropylenes / Q000737:chemistry*; D059027:Recycling; D012821:Silanes / Q000737:chemistry; D013718:Tensile Strength; D014783:Viscosity
chemical_list: D007220:Industrial Waste; D008689:Methacrylates; D011126:Polypropylenes; D012821:Silanes; D001194:Asbestos; C017492:methacryloxypropyltrimethoxysilane
keywords: Asbestos tailings; Mechanical properties; Polypropylene composite