Void Content Determination of Fiber Reinforced Polymers by Acid Digestion Method
Void Content Determination of Fiber Reinforced Polymers by Acid Digestion Method
复制标题
酸消解法测定纤维增强聚合物的空隙率
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Kamaruddin
中科院分区：
文献类型：
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作者：
M. Hassan;A. R. Othman;S. Kamaruddin
纤维增强聚合物（FRP）的孔隙率是材料先进使用中非常重要的质量特征之一，以确保其获得充分的性能。研究发现，在典型的飞机复合材料零件中，FRP的孔隙率必须低于2.5%才能达到要求的力学性能。测量孔隙含量最常用的方法是通过酸消化测试或燃烧法，因为它提供了可用于生成材料数据库属性的真实值。因此，本文详细讨论了测定玻璃钢空隙率的酸消解试验步骤，特别是确定合适的试验时间和保证试样基体被完全提取所需的化学体积量。为了达到这一目的，制备了不同处理工艺的不同测试样品。随后，研究结果在不同工艺固化整体复合材料中孔隙含量的背景下进行了讨论，其中VBO-oven固化工艺的样品与高压釜固化样品进行了比较。在vbo -烘箱固化过程中，在固化过程中使用增强剂可以提供15.52%的孔隙率，而通过减胀过程获得的孔隙率为10.91%。已经清楚地观察到，减胀对层压板内的空气排出机制产生了实质性的影响。
Porosity of the fiber-reinforced polymer (FRP) is one of very important quality characteristics for the advanced use of the material in order to ensure full performance properties are attained. It was found that the porosity values of FRP in typical aircraft composite parts must be lower than 2.5 % to achieve the required mechanical properties. The most common method for measuring the void content is through acid digestion testing or burn-off method, since it provides the true values that could be used to generate the database properties of the materials. Thus, this paper discussed the detail of the acid digestion test procedures for the void content measurement of FRP, especially with regards to the suitable testing time and chemical volumetric quantity required to ensure the matrix of test sample has been completely extracted. In order to attain this, different test samples for different processing techniques were prepared. Subsequently, the findings were discussed within the context of void content in cured monolithic composite for different types of process, in which the samples from the VBO-oven curing process were compared with those of the autoclave-cured samples. In the VBO-oven curing process, the use of an intensifier during the curing provided higher void content of 15.52% in comparison with those achieved through the debulking process (10.91%). It has been clearly observed that the debulking produced a substantial effect towards the air evacuation mechanism within the laminate.