纳米SiO<sub>2</sub>对Mg(OH)<sub>2</sub>/PE无卤阻燃复合材料性能的影响

纳米SiO₂对Mg(OH)₂/PE无卤阻燃复合材料性能的影响

摘要: 通过选用具有阻燃性能的纳米SiO₂对Mg(OH)2/PE无卤阻燃复合材料进行改性, 研究了纳米SiO₂对复合材料阻燃性能以及力学性能的影响.研究结果表明:无机填料用量相同时, Mg(OH)₂/SiO₂/PE体系的阻燃效果优于Mg(OH)₂/PE体系, 纳米SiO₂的引入可有效提高Mg(OH)₂/PE体系的阻燃性能, 并改善了体系的力学性能.当Mg(OH)₂/SiO2含量为40%时, Mg(OH)₂/SiO₂/PE体系氧指数比纯PE提高了74%, 且具有较好的力学性能.

Abstract: The Mg(OH)₂/PE halogen－free flame－retardant composites were modified by nano－SiO₂ in this paper. The effects of differentnano－SiO₂ contents on the mechanical properties and flame retardance of composites were studied. The results showed that the Mg(OH)₂/SiO₂/PE composites had better flame retardance than the Mg(OH)₂/PE composites as the norganic filler content was the same. Nano－SiO₂ can effectively improve the flame retardance and mechanical properties of Mg(OH)₂/PE halogen－free flame－retardant composite. When the Mg(OH)₂/SiO₂ content was 40%, the oxygen index of the Mg(OH)₂/SiO₂/PE composites showed a increase of 74% compared with the pure PE, while the mechanical properties of composite was still good.