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首页> 外文期刊>Journal of Applied Polymer Science >Improvement of Interfacial Adhesion of Poly(m-phenylene isophthalamide) Short Fiber-Thermoplastic Elastomer (SEBS) Composites by N-Alkylation on Fiber Surface
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Improvement of Interfacial Adhesion of Poly(m-phenylene isophthalamide) Short Fiber-Thermoplastic Elastomer (SEBS) Composites by N-Alkylation on Fiber Surface

机译：N-烷基化在纤维表面上改善聚（间亚苯基间苯二甲酰间苯二甲酰胺）短纤维-热塑性弹性体（SEBS）复合材料的界面粘合力

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摘要

A composite of short-filber,poly(m-phenylene isophthalamide),and thermoplastic elastomer styrene (ethylene-butylene) styrene (SEBS),was investigated.The fiber surface was modified by N-alkylation (heptylation and dodecylation) to improve their compatibility with a less polar SEBS matrix.Observation of fiber-surface morphology by SEM revealed surface roughness after N-alkylation.Nearly complete coating of the polymer matrix on the fiber was observed on a fractured surface of the composite,which is evidence for the improvement of fiber-matrix adhesion.It was found that the modulus of the composites grew with increasing fiber loading to approximately the same extent for both unmodified and modified fiber composites.Tensile strength of the modified fiber composites was found to improve significantly over that of the unmodified fiber composite.This suggests that the presence of the alkyl group on the fiber surface is responsible for an improvement of interfacial adhesion.
机译：研究了短纤维，聚（间亚苯基间苯二甲酰胺）和热塑性弹性体苯乙烯（乙烯-丁烯）苯乙烯（SEBS）的复合材料。通过N-烷基化（庚基化和十二烷基化）改性纤维表面，以提高其相容性SEBS的极性较小。通过SEM观察纤维表面形态，发现N-烷基化后的表面粗糙度。在复合材料的断裂表面上观察到聚合物基质几乎完全涂覆在纤维上，这是改善纤维表面的证据。发现未改性和改性纤维复合材料的复合材料的模量随纤维载荷的增加而增加，且其模量随未改性和改性纤维复合材料的增加程度大致相同，发现改性纤维复合材料的拉伸强度明显高于未改性纤维。这表明纤维表面上存在烷基可改善界面粘合性。

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