Synergistic effect of SEBS‐g‐MA and epoxy on toughening of polyamide 6/glass fiber composites
Synergistic effect of SEBS‐g‐MA and epoxy on toughening of polyamide 6/glass fiber composites
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DOI：
10.1002/polb.21164
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发表时间：
2007-06
期刊：
影响因子：
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通讯作者：
Xiaolin Xie;Z. Yu;Qingxin Zhang;Genwen Zheng;Y. Mai
中科院分区：
文献类型：
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作者：
Xiaolin Xie;Z. Yu;Qingxin Zhang;Genwen Zheng;Y. Mai
采用马来酸丁二烯-马来酸丁酯嵌段共聚物(SEBS-g-MA)和环氧树脂单体单独或组合增韧聚酰胺6/玻璃纤维复合材料。环氧基单体增强了尼龙6与玻璃纤维的相互作用。SEBS-g-MA橡胶在尼龙6中分散均匀，这是由于橡胶中的酸酐基团与尼龙6的胺端基之间的优先增容反应所致。聚酰胺6/玻璃纤维二元复合材料是脆性的。单独添加环氧单体并不能改变其脆性特征。同样，在不含环氧单体的情况下，加入20wt%的SEBS-g-MA对尼龙6/玻璃纤维复合材料的拉伸塑性影响不大。只有当SEBS-g-MA和环氧基单体以某种组合存在时，尼龙6/玻璃纤维复合材料才会表现出突出的韧性特征，如应力白化和颈缩。环氧单体与SEBS-g-MA的协同作用也使三元复合材料具有较高的缺口冲击强度。©2007 Wiley期刊公司J Polym Sci第B部分：Polym Phys 45：1448-1458,2007
Maleated styrene-ethylene-butylene-styrene block copolymer (SEBS-g-MA) and epoxy monomer, individually or in combination, are used to toughen polyamide 6/glass fiber composites. The epoxy monomer enhanced interaction between polyamide 6 and glass fiber. SEBS-g-MA rubber is uniformly dispersed in polyamide 6 matrix caused by the preferred compatibilizing reaction between the anhydride group of rubber and the amine terminal group of polyamide 6. The addition of epoxy does not affect the fine dispersion of SEBS-g-MA. Polyamide 6/glass fiber binary composites are brittle. The addition of epoxy monomer alone does not change their brittle features. Similarly, in the absence of epoxy monomer, adding 20 wt % of SEBS-g-MA to polyamide 6/glass fiber composites does not greatly increase the tensile ductility. Only when both SEBS-g-MA and epoxy monomer are present in some combination, do the polyamide 6/glass fiber composites show prominent ductile characteristics, such as stress-whitening and necking. This synergistic effect of epoxy monomer and SEBS-g-MA also imparts higher notched impact strengths to the ternary composites. © 2007 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 45: 1448–1458, 2007