Effect of Fibre Volume Fraction and Sodium Hydroxide Treatment on Mechanical Properties of Palm Fibre/Unsaturated Polyester Composite

JPSE (Journal of Physical Science and Engineering) Pub Date : 2022-04-09 DOI:10.17977/um024v7i12022p039

T. Partuti, Umar Hamzah Fariyan, Y. Dwiyanti, A. Trenggono, E. Yustanti

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引用次数: 2

Abstract

Wood has some weaknesses, such as susceptibility to weathering, easily attacked by termites, and low water resistance. An alternative material such as Natural Fibre-Reinforced Polymer (NFRP) composite should overcome those weaknesses. This research aims to make a composite with palm fibre and unsaturated polyester resin. Palm fibres immerse for 2 hours in NaOH solution with varying concentrations of 3%, 5%, and 7%. The volume fraction of palm fibre are 0%, 5%, 10%, 15%, and 20%. Woven roving fibreglass was added to compare the tensile strength of composite with or without natural fibre. The density of composites increased with the increase of fibre volume fraction. The highest tensile strength was obtained for 15% of fibre volume fraction, namely 23.8483 MPa. In contrast, the highest compressive strength was obtained for 5% of fibre volume fraction, namely 94.76 MPa. NaOH removed the impurities and waxy substances from the fibre surface and created a rougher surface topography after alkalization. The highest tensile strength was obtained with 7% NaOH, namely 14.674 MPa. The highest water absorption value was obtained at 3% NaOH concentration and 15% of fibre volume fraction, namely 1.445%. The addition of woven roving as reinforcement to natural fibre composite can increase tensile strength by 210%, from 13.882 MPa to 43.123 MPa.

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纤维体积分数和氢氧化钠处理对棕榈纤维/不饱和聚酯复合材料力学性能的影响

木材有一些弱点，如易风化，易受白蚁攻击，耐水性低。一种替代材料，如天然纤维增强聚合物(NFRP)复合材料应该克服这些弱点。本研究以棕榈纤维与不饱和聚酯树脂为原料制备复合材料。棕榈纤维在不同浓度的氢氧化钠溶液中浸泡2小时，浓度分别为3%、5%和7%。棕榈纤维的体积分数分别为0%、5%、10%、15%、20%。通过添加机织粗纱玻璃纤维，比较了添加和不添加天然纤维的复合材料的抗拉强度。复合材料的密度随纤维体积分数的增加而增加。当纤维体积分数为15%时，拉伸强度最高，为23.8483 MPa。当纤维体积分数为5%时，其抗压强度最高，为94.76 MPa。NaOH除去了纤维表面的杂质和蜡质物质，碱化后形成了粗糙的表面形貌。当NaOH浓度为7%时，拉伸强度最高，为14.674 MPa。NaOH浓度为3%，纤维体积分数为15%时，吸水率最高，为1.445%。添加粗纱增强天然纤维复合材料的抗拉强度可提高210%，由13.882 MPa提高到43.123 MPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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JPSE (Journal of Physical Science and Engineering)

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