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首页> 外文会议>International Conference on Advances in Mechanical Engineering and Mechanics >Mechanical Characterization of PP/Alfa Bio-composite Obtained by Thermocompression
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Mechanical Characterization of PP/Alfa Bio-composite Obtained by Thermocompression

机译：通过热压计算PP / ALFA生物复合物的机械表征

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This study contributes to the research of new materials from natural resources. It aims to exploit the natural fibres extracted from the Alfa plant in combination with a thermoplastic polymer matrix of polypropylene type in order to develop bio-composite materials. The biocomposite are composite materials made from natural or biofibre and non-biodegradable polymers such as polypropylene (PP), polyethylene (PE) and epoxies, or with biopolymers such as polylactic acid (PLA). The biocomposite made in this study was classified as eco-friendly and green since natural fibre and a renewable resource-based polymer were used. Various approaches have been used, including retting in salt water and chemical alkaline treatment. The extraction fibres was improved according to a two-step investigation. Firstly, the processing temperature, duration and the sodium hydroxide (NaOH) concentration, together with the usefulness of the post-treatment, were studied based on visual examinations. Morphological analyses carried out on the fibres obtained show an increase in the cellulose content and a decrease in the size of the treated fibres. Polypropylene/Alfa biocomposites have been formulated from zero to 30% in mass of fibres using the thermocompression molding process followed by injection molding. Tensile tests show the increase in Young's modulus and mechanical strength as a function of cellulose content and fibre dimensions. Chemical treatment with the sodium hydroxide (NaOH) solution with a concentration of 3.25 M at 100°C during 2.5 h with 6-day retting together with applying the post-treatment has the best mechanical properties.
机译：本研究有助于对自然资源的新材料的研究。它旨在利用从阿尔法植物中提取的天然纤维与聚丙烯类型的热塑性聚合物基质组合，以开发生物复合材料。生物复合材料是由天然或生物纤维和非生物降解的聚合物如聚丙烯（PP），聚乙烯（PE）和环氧树脂制成的复合材料，或与生物聚合物如聚乳酸（PLA）。本研究制备的生物复合材料被分类为环保和绿色，因为使用天然纤维和可再生资源的基于基于资源的聚合物。已经使用了各种方法，包括在盐水和化学碱性治疗中进行腐蚀。萃取纤维根据两步调查得到改善。首先，研究了基于视觉检查的处理温度，持续时间和氢氧化钠（NaOH）浓度以及后处理的有用性。在得到的纤维上进行的形态学分析显示纤维素含量的增加和处理过的纤维尺寸的降低。使用热压模塑方法随后注射成型，将聚丙烯/ ALFA生物复合材料从0〜30％的纤维配制起来。拉伸试验表明，作为纤维素含量和纤维尺寸的函数，杨氏模量和机械强度的增加。用浓度为3.25μm的氢氧化钠（NaOH）溶液在2.5℃下浓度为3.25μm，施用后处理6天具有最佳的机械性能。

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