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Effect of surface treatment on the properties of pineapple leaf fibers reinforced polyamide 6 composites

机译：表面处理对菠萝叶纤维增强聚酰胺6复合材料性能的影响

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In order to improve compatibility and composite properties of pineapple leaf fibers/polyamide 6 composite, alkaline and silane treatments were conducted for fiber modification. Effect of fiber surface treatment on the properties of the composites was investigated. Untreated and treated fibers were raw (R-PALF), alkaline treated (Na-PALF) and silane treated pineapple leaf fibers (Si-PALF). Fiber loading was varied in polyamide 6 based composite. Morphology and fiber-matrix interfacial adhesion, thermal and mechanical properties were examined. Surface treatments can improve interfacial adhesion between these two phases. All PALFs have enhanced thermal stability of all composites. However, thermal characteristics of the composites, i.e. T_c, T_m and crystallinity, have not been affected by PALF types. Na-PALF and Si-PALF help improving mechanical properties of the composites. Young's modulus and tensile strength have been increased whereas elongation decreased by both treated PALFs which indicates that the composites become stiffer and stronger but less flexible. From the results, it could be stated that alkali treatment is sufficient to improve compatibility and properties of the PALF/polyamide 6 composites at fiber loading of 30 %wt.
机译：为了提高菠萝叶纤维/聚酰胺6复合材料的相容性和复合性，对纤维改性进行碱性和硅烷处理。研究了纤维表面处理对复合材料性能的影响。未处理和处理的纤维是原料（R-PALF），碱性处理（Na-PALF）和硅烷处理的菠萝叶纤维（Si-Palf）。聚酰胺6种基复合材料中纤维负载变化。检查形态和纤维 - 基质界面粘附，热和机械性能。表面处理可以改善这两个相之间的界面粘附。所有PALF都具有增强了所有复合材料的热稳定性。然而，复合材料的热特性，即T_C，T_M和结晶度，尚未受到PALF类型的影响。 Na-Palf和Si-Palf有助于提高复合材料的机械性能。杨氏模量和拉伸强度已经增加，而两种治疗的肺部伸长率降低，表明复合材料变得更加令人发指，更强烈但更柔韧。从结果中，可以说，碱处理足以改善PALF /聚酰胺6复合材料在30％wt的纤维负载下的相容性和性质。

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