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首页> 外文期刊>Journal of Applied Polymer Science >Carbon Fiber-Reinforced Gelatin Composites. I. Preparation and Mechanical Properties
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Carbon Fiber-Reinforced Gelatin Composites. I. Preparation and Mechanical Properties

机译：碳纤维增强明胶复合材料。一，制备及力学性能

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摘要

Composites were made from carbon fibers and gelatin using a solvent-casting or solution-impregnation technique. Relationships between the fiber volume fraction (Vf), glycerol (plasticizer) content, gelation content, fiber form, and mechanical properties (tensile strength and modulus, elongation at break, and shear strength) of the composites were investigated. In long carbon their gelatin composite (C_L/Gel), tensile strength, modulus, and shear strenght increased steadily with the Vf. In the case of a short carbon fiber gelation composite (C_s/Gel), an initial improvement in tensile strength and modulus was followed by a reduction, whereas the shear strength improved with the Vf and then reached a constant value. The elongation decreased with the Vf for both composites. It is shown that C_L/Gel had higher values of strenght, modulus, and elongation than did C_s/Gel at any Vf level. The effects of glycerol did gelation contents on the mechanical properties of the omposites were found to be much less significant as compared to the Vf. According to scanning electron microscopic observation of the fracture surfaces, the fibers were uniformly distributed in the gelatin matrix, but the interfacial adhesion between the gelatin matrix and the carbon fibers was not very good for both composites. Fiber surface modification would be necessary to further improve the mechanical properties of the two composites.
机译：使用溶剂浇铸或溶液浸渍技术，由碳纤维和明胶制成复合材料。研究了复合材料的纤维体积分数（Vf），甘油（增塑剂）含量，胶凝含量，纤维形式和机械性能（拉伸强度和模量，断裂伸长率和剪切强度）之间的关系。在长碳中，它们的明胶复合物（C_L / Gel），抗张强度，模量和剪切强度随Vf稳定增加。在短碳纤维胶凝复合材料（C_s / Gel）的情况下，抗拉强度和模量最初得到改善，随后降低，而剪切强度随Vf改善，然后达到恒定值。两种复合材料的伸长率均随Vf降低。结果表明，在任何Vf水平下，C_L / Gel的强度，模量和伸长率值均高于C_s / Gel。发现甘油含量对胶合体机械性能的影响与Vf相比没有那么重要。根据扫描电子显微镜观察的断裂表面，纤维均匀地分布在明胶基质中，但是明胶基质和碳纤维之间的界面粘合对于两种复合材料来说都不是很好。纤维表面改性对于进一步改善两种复合材料的机械性能将是必要的。

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