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首页> 外文期刊>Journal of Applied Polymer Science >Rice straw fiber reinforced high density polyethylene composite: Effect of coupled compatibilizating and toughening treatment
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Rice straw fiber reinforced high density polyethylene composite: Effect of coupled compatibilizating and toughening treatment

机译：稻草纤维增强高密度聚乙烯复合材料：增容和增韧耦合处理的效果

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摘要

In this study, rice-straw (RS) filled high density polyethylene (HDPE) composites were manufactured by extrusion and injection molding. Three compatibilizers, which are unfunctionalized ethylene/propylene copolymer (uEPR), maleic anhydride grafted EPR (EPR-g-MA) and PE-g-MA, and their combinations were introduced to strengthen fiber-matrix interphase. The mechanical and morphological properties of composites were investigated. For single-compatibilizer system, PE-g-MA or EPR-g-MA alone enhanced tensile, flexural, and impact strengths of resultant composites compared with HDPE/RS system without compatibilizers. Different toughening origins of individual compatibilizer were discussed based on composites' interphase morphologies and mechanical properties. For combined-compatibilizers system, the PE-g-MA/EPR weight ratio is important for several properties of composites. The optimum ratio was considered as 2: 1 and 1: 1 for PE-g-MA/uEPR and PE-g-MA/EPR-g-MA modified composites, respectively. Also, composites modified by combined PE-g-MA/EPR-g-MA showed better impact strength than that modified by PE-g-MA alone.
机译：在这项研究中，稻草（RS）填充的高密度聚乙烯（HDPE）复合材料是通过挤压和注塑成型制造的。引入了三种增容剂，即未官能化的乙烯/丙烯共聚物（uEPR），马来酸酐接枝的EPR（EPR-g-MA）和PE-g-MA，并结合使用它们来增强纤维-基体间相。研究了复合材料的力学性能和形态学性能。对于单增容剂体系，与没有增容剂的HDPE / RS体系相比，单独的PE-g-MA或EPR-g-MA增强了所得复合材料的拉伸，挠曲和冲击强度。基于复合材料的相间形态和力学性能，讨论了各种增容剂的不同增韧来源。对于组合增容剂体系，PE-g-MA / EPR的重量比对于复合材料的多种性能很重要。 PE-g-MA / uEPR和PE-g-MA / EPR-g-MA改性复合材料的最佳比例分别为2：1和1：1。而且，与单独的PE-g-MA改性的复合材料相比，通过组合的PE-g-MA / EPR-g-MA改性的复合材料显示出更好的冲击强度。

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