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首页> 外文期刊>Journal of Thermoplastic Composite Materials >Effect of interface modification on mechanical and thermal properties of high-density polyethylene/silvergrass composites
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Effect of interface modification on mechanical and thermal properties of high-density polyethylene/silvergrass composites

机译：界面改性对高密度聚乙烯/银草复合材料力学性能和热性能的影响

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摘要

This study is aimed at utilizing the gramineae to reinforced polyethylene (PE). The interface modification was performed by treatment of silvergrass (SV) fibers with sodium hydroxide (NaOH) and polymeric methylene diphenyldiisocyanate (PMDI). The modified fibers were characterized by Fourier transform infrared spectroscopy. Composites were fabricated with different fiber loadings (10%, 20%, 30%, 40%, 50%, and 60%) of SV fibers by injection molding. The properties of the composites were studied by mechanical property, thermogravimetric analysis, and differential scanning calorimetry. The mechanical properties of the treated composites were compared well with those of untreated composites. A marked improvement of 49.0% in tensile strength and 47.35% in flexural strength for 40% SV fibers-reinforced high-density PE composites was noticed. It is also found that the treated fiber is acting as a nucleating agent. It can be deduced that the thermal stability of the wood-plastic composites can be improved when SV fibers were treated by NaOH and PMDI.
机译：这项研究旨在利用禾本科来增强聚乙烯（PE）。通过用氢氧化钠（NaOH）和聚合的亚甲基二苯基二异氰酸酯（PMDI）处理银草（SV）纤维来进行界面修饰。通过傅立叶变换红外光谱对改性纤维进行表征。通过注塑成型，以不同的纤维负载量（10％，20％，30％，40％，50％和60％）的SV纤维制造了复合材料。通过机械性能，热重分析和差示扫描量热法研究了复合材料的性能。将处理过的复合材料的机械性能与未处理过的复合材料的机械性能进行了很好的比较。对于40％SV纤维增强的高密度PE复合材料，抗张强度和弯曲强度的改善分别为49.0％和47.35％。还发现处理过的纤维起成核剂的作用。可以推断出，当用NaOH和PMDI处理SV纤维时，可以改善木塑复合材料的热稳定性。

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