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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：1460 下载量：410
| 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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