纳米SiO_2协效纳米Mg(OH)_2阻燃EVA的研究  

Study on the synergistic effect of nano-SiO_2 for nano-Mg(OH)_2 flame retardant on EVA

作　　者：周波[1] 杨勤[1] 王勇[1] 李彩云[1] Zhou Bo;Yang Qin;Wang Yong;Li Caiyun(Department of Basic Courses Teaching,The Chinese Peoples Armed Police Forces Academy,Langfang 06500)

机构地区：[1]中国人民武装警察部队学院基础部,廊坊065000

出　　处：《化工新型材料》2018年第7期159-162,共4页New Chemical Materials

基　　金：河北省教育厅高校研究项目(ZC2016052)

摘　　要：以纳米二氧化硅(SiO_2)为协效剂,协效纳米氢氧化镁(MH)阻燃乙烯-醋酸乙烯酯(EVA),并制得纳米SiO_2/MH/EVA复合材料。采用傅里叶红外光谱仪(FT-IR)、热重分析仪(TG)、扫描电子显微镜(SEM)、氧指数和垂直燃烧测定法对材料的性能进行测试。结果表明:纳米SiO_2与纳米MH间有明显的协同作用,SiO_2含量为6%(wt,质量分数),MH为44%(wt,质量分数),制得的纳米SiO_2/MH/EVA复合材料的阻燃体系氧指数为30.8%,阻燃等级为V-0级,断裂伸长率达到726%,拉伸强度达到3.82MPa。SiO_2/MH在EVA中分散优于纳米MH,纳米SiO2可以有效改善复合材料的力学性能和阻燃性能。Nano-SiO2/MH/EVA composites were prepared with nano-magnesium hydroxide（MH）as flame retardant and nano-SiO2 as synergistic agent.The properties of materials were tested by Fourier transform infrared spectrometer（FR-IT）,thermogravimetric analyzer（TG）,electron microscope（SEM）,oxygen index and vertical combustion method.The results showed that there was obvious synergistic effect between nano-SiO2 and nano-MH.When the content of SiO2 was 6 wt% and MH 44 wt%,the oxygen index of material was 30.8%,flame retardant grade V-0,the elongation at break 726% and tensile strength 3.82 MPa.The dispersion of SiO2/MH in EVA was better than that of nano-MH.SiO2 can effectively improve the mechanical properties and flame retardancy of MH/EVA composites.

关 键 词：纳米MG(OH)2 纳米SIO2 EVA 协效 阻燃 

分 类 号：TB332[一般工业技术—材料科学与工程]