海泡石对水菱镁矿/EVA体系阻燃性能的影响  

Effect of Sepiolite on the Flame Retardant Performance of Hydromagnesite/EVA

作　　者：贾宇琛 张禹泽 郭凡 李丽娟[1,2] 姬连敏 JIA Yu-chen;ZHANG Yu-ze;GUO Fan;LI Li-juan;JI Lian-min(Key Laboratory of Comperhensive and Highly Efficient Utilization of Salt Lake Resonrces,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;University of Chinese Academy of Sciences,Beijing,100049,China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源开发工程技术研究中心,青海西宁810008 [3]中国科学院大学,北京100049

出　　处：《盐湖研究》2021年第3期9-16,82,共9页Journal of Salt Lake Research

基　　金：青海省科技厅科技成果转化专项(2020-GX-102,2019-GX-163);中国科学院绿色过程制造创新研究院自主部署联合基金项目(IAGM2020C09)。

摘　　要：水菱镁矿是一种新开发的高镁矿,可以作为阻燃填料使用。水菱镁矿作为单一填料时,阻燃效率较低。为了解决这一问题,使用海泡石(SEP)为协效剂,水菱镁矿(HM)作为阻燃剂,制备SEP-HM/EVA复合阻燃材料。对材料进行了极限氧指数(LOI)、垂直燃烧(UL-94)、锥形量热(CCT)和力学性能测试,研究了海泡石对该复合材料阻燃性能及力学性能的影响。研究结果表明:在水菱镁矿和海泡石总添加量为60%,其中海泡石为9%时,相比于未添加海泡石的复合材料,拉伸强度增加了51.59%,断裂伸长率增加了67.54%,LOI上升了3.5%,垂直燃烧等级均维持在V-0级别,热释放总量(THRR)降低了16.65%,烟释放总量(TSP)降低了22.93%。总的来说,在显著提高复合材料力学性能的同时,海泡石也能较好的提高复合材料的阻燃性能。通过该研究能够对水菱镁矿作为阻燃填料方面的应用提供新的思路。Hydromagnesite is a kind of newly developed high-magnesium ore that can be used as a flame-retardant filler.When hydromagnesite is used as a single filler,the flame retardant efficiency is low.In order to solve this problem,sepiolite(SEP)is used as the synergist and hydromagnesite(HM)is used as the flame retardant to prepare SEP-HM/EVA composite flame retardant materials.The materials have been tested for limiting oxygen index(LOI),vertical combustion(UL-94),cone calorimetry(CCT)and mechanical properties,and the effect of sepiolite on the flame retardant and mechanical properties of the composite material is studied.The research results show that:when the hydromagnesite and sepiolite total amount was 60%,of which sepiolite is 9%,the tensile strength is increased by 51.59%compared with the composite without sepiolite,and the fracture The elongation increased by 67.54%,the LOI increased by 3.5%,the vertical combustion rating was maintained at the V-0 level,the total heat release(THRR)decreased by 16.65%,the total smoke emission(TSP)decreased by 22.93%.In general,while significantly improving the mechanical properties of composite materials,sepiolite can also improve the flame retardant properties of composite materials.The research in this article can provide new ideas for the application of hydromagnesite as a flame retardant filler.

关 键 词：水菱镁矿 海泡石 乙烯-醋酸乙烯共聚物 阻燃 

分 类 号：TQ314.248[化学工程—高聚物工业]