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Effect of fiber modified by alkali/polyvinyl alcohol coating treatment on properties of sisal fiber plastic composites
Journal of Reinforced Plastics and Composites ( IF 3.1 ) Pub Date : 2020-06-28 , DOI: 10.1177/0731684420934866
Can Hu 1, 2 , Yueyun Zhou 1 , Ting Zhang 1, 2 , Taijun Jiang 1 , Guangsheng Zeng 1
Affiliation  

Demand for natural fibers reinforced composites is growing as an alternative to synthetic fiber reinforced plastic composites. However, poor compatibility between natural fiber and matrix has limited its development. Therefore, it is necessary to improve their interfacial adhesion to improve the comprehensive properties of composites. In this work, sisal fibers were subjected to an alkali/polyvinyl alcohol coating treatment by an ultrasonic impregnation method, and the sisal/high-density polyethylene composite was prepared by a twin-screw extruder. The Fourier transform infrared spectroscopy was used to characterize the modification effect of sisal fiber. The surface morphology of sisal fiber and the interfacial morphology of sisal/high-density polyethylene composites were observed. The mechanical properties and water absorption of sisal/ high-density polyethylene composites were also studied. The results show that alkali/polyvinyl alcohol coating compound treatment can effectively improve the interfacial adhesion between sisal fiber and high-density polyethylene, improve the mechanical properties of composite, and reduce water absorption. Alkali/polyvinyl alcohol coating compound treatment is a very environment-friendly, cost-effective fiber modification method when compared with traditional modification methods. It is helpful for the development and application of natural fibers reinforced composites.

中文翻译:

碱/聚乙烯醇涂层处理改性纤维对剑麻纤维塑料复合材料性能的影响

作为合成纤维增强塑料复合材料的替代品,对天然纤维增强复合材料的需求正在增长。然而,天然纤维与基体相容性差,限制了其发展。因此,有必要提高它们的界面附着力,以提高复合材料的综合性能。在这项工作中,剑麻纤维通过超声浸渍法进行碱/聚乙烯醇涂层处理,并通过双螺杆挤出机制备剑麻/高密度聚乙烯复合材料。傅里叶变换红外光谱用于表征剑麻纤维的改性效果。观察剑麻纤维的表面形貌和剑麻/高密度聚乙烯复合材料的界面形貌。还研究了剑麻/高密度聚乙烯复合材料的机械性能和吸水率。结果表明,碱/聚乙烯醇涂层复合处理可有效提高剑麻纤维与高密度聚乙烯的界面附着力,提高复合材料的力学性能,降低吸水率。与传统改性方法相比,碱/聚乙烯醇涂层复合处理是一种非常环保、经济的纤维改性方法。有助于天然纤维增强复合材料的开发和应用。提高复合材料的力学性能,降低吸水率。与传统改性方法相比,碱/聚乙烯醇涂层复合处理是一种非常环保、经济的纤维改性方法。有助于天然纤维增强复合材料的开发和应用。提高复合材料的力学性能,降低吸水率。与传统改性方法相比,碱/聚乙烯醇涂层复合处理是一种非常环保、经济的纤维改性方法。有助于天然纤维增强复合材料的开发和应用。
更新日期:2020-06-28
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