Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 75, Issue 5, Pages 557-563Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2005.11.003
Keywords
EVA; flame retardancy; hydrotalcite; red phosphorus; irradiation crosslinking; thermal properties
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Halogen-free flame retarded ethylene vinyl acetate copolymer (EVA) composites using Mg-Al-CO3 hydrotalcite (MALDH) and microcapsulated red phosphorus (MRP) have been prepared in a melt process. The flame retardation of the composites has been studied by the limited oxygen index (LOI) and UL-94 methods, and the thermal decomposition by the thermogravimetric analysis (TGA). The changes of their properties of the composites before and after the Gamma irradiation are compared. The synergistic effect in the flame retardation between MALDH and MRP in EVA has been found. The EVA/MALDH/MRP composites after the irradiation crosslinking result in a great increase in the Vicat softening point. The LOI value, the mechanical properties and thermal stability are also improved for the composites irradiated by a suitable irradiation dose. (c) 2005 Elsevier Ltd. All rights reserved.
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