RESEARCH PAPER |
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Preparation of WPCBP/SiO2 Hybrid Filler and Its Application in Unsaturated Polyester Resin |
Dechao HU,Zhixin JIA,Bangchao ZHONG,Huanhuan DONG,Yong DING,Yuanfang LUO,Demin JIA
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School of Materials Science and Engineering, Guangdong Key Laboratory of High Performance and FunctionalPolymer Materials, South China University of Technology, Guangzhou 510640 |
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Abstract To strengthen the interfacial interaction between waste printed circuit boards powders (WPCBP) and polymer matrix, WPCBP was immobilized a layer of SiO2 nanoparticles to form a novel WPCBP-SiO2 hybrid filler by sol-gel method. SEM, TGA and FTIR suggested that SiO2 nanoparticles were chemically bonded onto the surface of WPCBP. Then WPCBP-SiO2 hybrid filler was modified with a silane coupling agent and incorporated in unsaturated polyester resin (UPE) matrix. The effect of WPCBP-SiO2 hybrid filler on mechanical properties, interfacial bonding and thermal stability of UPE composites were comprehensively explored. It has been confirmed that WPCBP-SiO2 hybrid filler could form a strong interfacial interaction with polymer matrix, and markedly enhance the mechanical properties and thermal stability of UPE composites. Besides, the modification of hybrid filler give further improvements of UPE composites.
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Published: 25 January 2018
Online: 2018-01-25
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Schematic diagram of preparation of WPCBP-SiO2 hybrid filler
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SEM images of (a—c) WPCBP and (d—f) WPCBP-SiO2 hybrid filler
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FTIR curves of WPCBP, WPCBP-SiO2 and m-WPCBP-SiO2
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TGA and DTG curves of WPCBP and WPCBP-SiO2
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SEM images of UPE composites filled with (a,b) WPCBP, (c,d) WPCBP-SiO2 and (e,f) m-WPCBP-SiO2
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Sample | Tensile strength MPa | Flexural strength MPa | Impact strength kJ/m2 | UPE | 56.7±1.3 | 91.4±1.1 | 5.9±0.13 | UPE/WPCBP composites | 47.1±1.5 | 85.7±1.4 | 4.4±0.37 | UPE/WPCBP-SiO2 composites | 60.1±1.5 | 97.1±1.5 | 7.6±0.59 | UPE/m-WPCBP-SiO2 composites | 70.3±1.7 | 111.3±1.5 | 9.4±0.41 |
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Mechanical properties of UPE and UPE composites
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Proposed model for the reinforcing mechanismof UPE composites
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TGA curves of UPE and UPE composites
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