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Abstract
The mechanical properties and flammability of high-density polyethylene (HDPE)/ethylene vinyl acetate (EVA) mixed with various amounts of magnesium hydroxide (Mg(OH)2) as the filler in composites, irradiated with electron beam at an irradiation dose of 150 kGy, have been studied. It is found that high-energy electron beam irradiation has significant effects on the mechanical properties of the HDPE/EVA/Mg(OH)2 composites. The tensile strength and elastic modulus increased greater than in the unirradiated ones. Meanwhile, with increasing the content of Mg(OH)2 in the composites, the limiting oxygen index (LOI) value increased sharply. The microstructure of the caves of the unirradiated HDPE/EVA/Mg(OH)2 composites show poor interface of composites compared with the irradiated ones, as observed in SEM micrographs.
Keywords
electron beam irradiation
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cross-linking
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mechanical properties
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Mg(OH)2
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HDPE/EVA
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Electron beam irradiated HDPE/EVA/Mg(OH) composites for flame-retardant electric cables.
Front. Mater. Sci., 2008, 2(4): 426-429 DOI:10.1007/s11706-008-0064-y
