3 years ago

Oxidation-grafting surface modification of waste silicone rubber composite insulator powder: Characterizations and properties of EPDM/modified waste powder composites

Oxidation-grafting surface modification of waste silicone rubber composite insulator powder: Characterizations and properties of EPDM/modified waste powder composites
Bin Sun, Hongwei Cao, Wenlian Yu, Linjuan Du, Zhenxia Du
In order to broaden the applications of waste silicone rubber composite insulator powder (WSP), modified waste powder (WSP-KH570) was prepared by a two-step treatment process involving improved surface oxidation approach by using acidic H2O2 solution and subsequently grafting of KH570. Fourier transform infrared spectroscopy in the attenuated total reflection mode (FTIR-ATR) analysis revealed the presence of KH570 on the powder surface. The result was confirmed by thermogravimetric analysis (TGA). Blends of ethylene propylene diene monomer (EPDM) with WSP-KH570 were prepared. The effects of WSP-KH570 on mechanical properties and thermal properties of the blends were investigated. The WSP-KH570 showed an observed improvement in tensile strength and elongation at break of EPDM/WSP-KH570 blends compared with corresponding compositions of EPDM/WSP blends. The TGA cure showed that EPDM filled with WSP-KH570 had higher thermal stability at 210–380 °Cthan EPDM/WSP. Dynamic mechanical analysis indicated EPDM and WSP-KH570 were better miscible with the blend ratio (90/10). © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45438.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45438

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