期刊
RADIATION PHYSICS AND CHEMISTRY
卷 78, 期 11, 页码 922-926出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2009.06.013
关键词
Electron beam irradiation; Magnesium hydroxide; Cross-linking; Rheology; Flame retardant
High-density polyethylene/ethylene vinyl-acetate copolymer/magnesium hydroxide composites were crosslinked via high-energy electron beam irradiation in the presence of triallylisocyanurate. The structure of the cross-linking network was determined with the. help of theological measurements through advanced theological extended systems (ARES). The thermal and flame-retardant properties of the irradiated composites were investigated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and cone calorimetry. Results showed that the cross-linking network structure could enhance the thermal stability of composites, and did favor to smoke suppression. However, the peak heat release rate (PHRR) increased and the time to PHRR shortened, inferring that the composites after irradiation cross-linking were easier to combust. The char microstructure after cone calorimetry test was observed and used to give explanation of the above results. (C) 2009 Elsevier Ltd. All rights reserved.
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