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Mg(OH)2表面改性对阻燃O-SEBS/PP共混物性能的影响

发表时间:2012-05-15  浏览量:1115  下载量:355
全部作者: 刘述梅,葛俊静,赵建青
作者单位: 华南理工大学材料科学与工程学院
摘 要: 以Mg(OH)2无卤阻燃改性充油苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物/聚丙烯(O-SEBS/PP)共混物,用量为质量分数60%可使O-SEBS/PP共混物阻燃性能达到UL-94@V-0级,力学性能则降低。研究3种硅烷偶联剂KH560,KH550,A-171表面改性Mg(OH)2对阻燃O-SEBS/PP/Mg(OH)2复合材料性能的影响,结果表明:经A-171表面处理后的Mg(OH)2填充阻燃复合材料的拉伸强度得到改善,KH560则使拉伸强度略有降低。复合材料淬断面扫描电子显微镜(scanning electron microscope, SEM)照片表明:A-171改性后的Mg(OH)2粒子表面有机包覆良好,能够较均匀地分散在基体中,与基体间粘结力增强。
关 键 词: 有机高分子材料;苯乙烯-乙烯/丁烯-苯乙烯嵌段共聚物/聚丙烯;表面改性;无卤阻燃;Mg(OH)2
Title: Surface-modification effect of magnesium hydroxide on the properties of flame-retarded O-SEBS/PP blends
Author: LIU Shumei, GE Junjing, ZHAO Jianqing
Organization: School of Materials Science and Engineering, South China University of Technology
Abstract: This paper presents surface-modification effect of Mg(OH)2 on the properties of flame-retarded blends of styrene-ethylene/butylene-styrene(SEBS)block copolymers filled by paraffin oil and polypropylene (O-SEBS/PP). The flame-retarded rate of the O-SEBS/PP blends attains UL 94@V-0 by the incorporation of mass percent 60% Mg(OH)2, but mechanical properties decrease. The influences of surface-modification of Mg(OH)2 by three kinds of silane couplings (KH550, KH560 and A171) on the combustion, mechanical and processing properties of the O-SEBS/PP/Mg(OH)2 composites are evaluated. The surface-modification of A171 induces the tensile strength of the composites to increase while the surface-modification of KH560 leads to decrease. Scanning electron microscope images of cryogenic fracture sections of the composites by the use of Mg(OH)2 surface-modified by A-171 illustrate a fine encapsulation and the uniform dispersion of particles and strong interfacial bonding between particles and matrix.
Key words: organic macromolecule materials science; styrene-ethylene/butylene-styrene block copolymer/polypropylene blends; surface-modification; halogen-free flame retardancy; Mg(OH)2
发表期数: 2012年5月第9期
引用格式: 刘述梅,葛俊静,赵建青. Mg(OH)2表面改性对阻燃O-SEBS/PP共混物性能的影响[J]. 中国科技论文在线精品论文,2012,5(9):808-813.
 
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