Study on the flame retardancy of EVM/magnesium hydroxide composites optimized with a flame retardant containing phosphorus and silicon
作者： Lichun Wang , Xinfeng Wu , Chao Wu , Jinhong Yu , Genlin Wang
DOI: 10.1002/APP.33226
关键词:
摘要: A novel phosphorus-silicon-containing flame retardant, spirocyclic pentaerythritol bisphosphorate disphosphoryl chloride/9, 10-dihydro-9-oxa-10-phosphaphanthrene-10-oxide/vinyl methyl dimethoxysilane (SPDV), was synthesized successfully and used for optimizing the retardancy of ethylene-vinyl acetate copolymer (EVM) rubber/magnesium hydroxide (MDH) composites. The microstructure SPDV characterized determined by Fourier transform infrared (FTIR) nuclear magnetic resonance (NMR) spectroscopy. Thermogravimetric analysis (TGA) showed that had good charring effect in air even at high temperature (800°C). optimized EVM/MDH composites investigated limiting oxygen index (LOI), cone calorimeter, UL-94 vertical burning tests. higher LOI value (29.4%) better rating (V-0) can be achieved composite (EVM-7) than without (EVM-3) with total loading additives. HRR decreased residual mass increased gradually as There existed distinct synergistic intumescent flame-retardant between MDH EVM matrix. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci,
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