Fabrication and Mechanical Properties of High-Durability Polypropylene Composites via Reutilization of SiO2 In-Situ-Synthesized Waste Printed Circuit Board Powder

Polymers

Baixue Li¹  Hui He¹  Xin Wen²  Xinlu Liu²  Shenghui Tian²  Zuolu Zhang³ 

[1] Key Lab of Guangdong Province for High Property and Functional Macromolecular Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;Provincial and Ministerial Co-Constructive of Collaborative Innovation Center for MSW Comprehensive Utilization, School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China;Quality Inspection and Measurement Department, Tangshan Wenfeng Special Steel Co., Ltd., Tangshan 063299, China;

关键词: waste printed circuit board powder;    polypropylene;    hybrid;    OIT;    surface modification;   

DOI  :  10.3390/polym14051045

来源: DOAJ

【 摘 要 】

This paper focuses on the characterization of the physico-chemical properties, surface modification, residual copper content and in situ hybrid inorganic particle modification of polypropylene (PP) composites reinforced by waste printed circuit board powder (WPCBP). A series of WPCBP/SiO₂ hybrids (TSW) were prepared by a sol–gel method at different pH values. Characterization results revealed the in situ generation of SiO₂ on the surface of WPCBP, and showed that with an increase in pH value, the size of SiO₂ particles increased gradually and the copper content decreased in the TSW powder. The mechanical properties, oxidation induction time (OIT) and thermal properties of PP composites were improved by reinforcement with TSW, which might be ascribed to the formation of serrated interfaces. This work not only develops a powerful method to enhance the properties of PP/WPCBP composites, but also provides an environmentally sustainable approach to the high-added-value reutilization of WPCBP.

【 授权许可】

Unknown