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首页> 外文期刊>e-Polymers >Impact and shear properties of carbon fabric/ poly-dicyclopentadiene composites manufactured by vacuum‐assisted resin transfer molding
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Impact and shear properties of carbon fabric/ poly-dicyclopentadiene composites manufactured by vacuum‐assisted resin transfer molding

机译：真空辅助树脂传递模塑制得的碳纤维布/聚二环戊二烯复合材料的冲击和剪切性能

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摘要

Dicyclopentadiene (DCPD) resin has gained popularity owing to its fast curing time and ease of processing with a low viscosity in the monomer state. In the present study, the impact and shear properties of a carbon fiber (CF)/p-DCPD composite were investigated. The CF/p-DCPD composite was manufactured by vacuum-assisted resin transfer molding with CF as the reinforcement and p-DCPD as the resin with a maximum fiber volume fraction of 55 weight percent. Impact and shear properties of the CF/p-DCPD composite were evaluated and compared with those of a CF/Epoxy composite. The maximum shear stress and modulus of the CF/p-DCPD composite were lower than that of the CF/Epoxy composite. However, the CF/p-DCPD composite had higher toughness than that of the CF/Epoxy composite; this indicates that it is tougher and exhibits a more ductile load-displacement response with a lower modulus and larger failure deformation. The impact strength of the CF/p-DCPD composite was about three time that of the CF/Epoxy composite. The higher impact strength of the CF/p-DCPD composite is attributed to the resin characteristics: epoxy resin has a more brittle behavior, and hence, higher energy is required for crack propagation due to fracture.
机译：双环戊二烯（DCPD）树脂因其快速的固化时间和易于加工且单体状态下粘度低而受到欢迎。在本研究中，研究了碳纤维（CF）/ p-DCPD复合材料的冲击和剪切性能。 CF / p-DCPD复合材料是通过真空辅助树脂传递模塑法制造的，其中CF作为增强材料，p-DCPD作为树脂，最大纤维体积分数为55重量％。评估了CF / p-DCPD复合材料的冲击和剪切性能，并将其与CF /环氧复合材料的冲击和剪切性能进行了比较。 CF / p-DCPD复合材料的最大剪切应力和模量低于CF /环氧复合材料的最大剪切应力和模量。但是，CF / p-DCPD复合材料的韧性比CF /环氧复合材料高。这表明它更坚硬，并且表现出更大的延性载荷-位移响应，具有较低的模量和较大的破坏变形。 CF / p-DCPD复合材料的冲击强度约为CF /环氧复合材料的冲击强度的三倍。 CF / p-DCPD复合材料的较高冲击强度归因于树脂特性：环氧树脂具有更脆的行为，因此，由于断裂而导致的裂纹扩展需要更高的能量。

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