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Investigation of toughening effect of biomass-derivedSiCBon basalt fiber-reinforced unsaturated polyester composites

机译：生物质 - 衍生的玄武岩纤维增强不饱和聚酯复合材料的增韧效果研究

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摘要

Fiber-reinforced polymer composites are outstanding lightweight structural materials, so that they are widely used in automotive, marine, medical, defense, and aerospace fields. However, when subjected to structural loads, they are prone to failure due to their inherent brittleness and the susceptibility to delamination, which can lead to the loss of the load-bearing capacity of composite materials. This article proposes an effective solution of innovatively using the silicon carbon black, a kind of sustainable green biomass material derived from rice husks, to toughen the composites. When the content of silicon carbon black (SiCB) added to the composites is 1.5 wt%, the maximum values of flexural strength, bending energy absorption, and the mode II interlaminar fracture toughness values are 333 MPa, 6.10 J, and 1591 J/m(2), respectively, corresponding to the improvement percentage of 138%, 120%, and 216%. The addition of SiCB significantly improved the bending properties and the mode II interlaminar fracture toughness of composites. The toughening mechanisms of SiCB were studied based on the fracture surface morphologies of the composites.
机译：纤维增强聚合物复合材料是一种优良的轻质结构材料，广泛应用于汽车、海洋、医疗、国防和航空航天等领域。然而，当受到结构载荷时，由于其固有的脆性和易分层性，它们容易发生失效，这可能导致复合材料承载能力的损失。本文提出了一种创新性地利用稻壳衍生的可持续绿色生物质材料硅碳黑增韧复合材料的有效解决方案。当添加到复合材料中的硅碳黑（SiCB）含量为1.5 wt%时，弯曲强度、弯曲能量吸收和II型层间断裂韧性的最大值分别为333 MPa、6.10 J和1591 J/m（2），对应于138%、120%和216%的改善百分比。SiCB的加入显著改善了复合材料的弯曲性能和Ⅱ型层间断裂韧性。根据复合材料的断口形貌，研究了SiCB的增韧机理。

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