FIBRED MAGNESIUM HYDROXIDE AND FLAME-RESISTANT POLYENE MATERIAL

The fibred magnesium hydroxide from the bracite was treated with a surface active agent. The modified fibred magnesium hydroxide as flame-retardant, boric acid, barium stearate, polydimethyl siloxane fluid, vinyltriethoxysilane as synergists of the flame-retardant were added to polyene resin. The flame-resistance polyene material prepared meets the requirements of EWCZ-6287-1. (Author abstract) 2 Refs.

阻燃填料对陶瓷化耐火硅橡胶性能的影响

为探究阻燃填料对陶瓷化耐火硅橡胶性能的影响,以硅橡胶为基材,硼酸锌和玻璃粉为成瓷填料,不同比例的氢氧化铝和氢氧化镁为阻燃填料,制备了陶瓷化耐火硅橡胶。并对陶瓷化硅橡胶的硬度、拉伸性能、撕破性能、电气绝缘性能及耐火性能进行了测试分析,结果表明:相较于普通硅橡胶,陶瓷化硅橡胶的邵氏硬度提高了26.3%;拉伸性能有不同程度的降低,但仍可以满足电线电缆产品标准中的拉伸性能要求;撕破性能最大增幅为74%;电气绝缘性能有一定程度的降低;陶瓷化硅橡胶具有良好的耐火性能,且在阻燃填料相同质量份数下,氢氧化镁比氢氧化铝更有利于陶瓷化硅橡胶的阻燃性能的提高,其极限氧指数相较于普通硅橡胶提高了41.1%。