Hybrid composites have great potential for specific strength and specific stiffness, effective in aerospace industries, submarines, and light-weight automotives. The mechanical strength and adhesiveness of hybrid laminates can be enhanced by effective use of matrix materials in different ratios of epoxy resin and epoxy hardener. Gentle use of resin and hardener in the fabrication of hybrid composites can alter tensile modulus, the bonding strength between matrix and fabric. Spectacular progress has been achieved by the selection of appropriate amounts of resin and hardener in the hybridization of composite laminate. Hybridization was made by Kevlar inorganic/organic fabrics and glass fabrics stacked with epoxy matrix material. To achieve the combination of mechanical properties and bonding strength, transparent epoxy resin and hardener of commercial grades mixed in various ratios are incorporated as matrix material to fabricate laminate. Three different sheets, named A (3:2), B (4:1), and C (2:3), were embedded by the hand layup method to prepare a hybrid composite. Experimental tests, according to ASTM 3039, were performed to determine the tensile mechanical properties. Peel tests, according to ASTM 6862-11, were performed to investigate the interlaminar strength between Kevlar and glass layers. Shore A and Shore C hardness durometers were used to find out the hardness of the specimens at different spots using the ASTM D-2240 standard. Finally, physical testing, such as density and then water absorption, was carried out using the ASTM D-570 standard to check the swelling ratio of the different specimens. The results obtained highlight that the specimen of the glass/Kevlar hybrid embedded in the ratio 3:2 in lamination has the best mechanical properties (tensile strength and hardness) and the lowest swelling ratio, while the material system in the ratio 4:1 shows the best interlaminar properties and adhesion capabilities.

中文翻译：

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不同比例的环氧树脂在层压中的玻璃-芳纶杂化复合材料的力学性能和粘合性

杂化复合材料具有特定强度和特定刚度的巨大潜力，在航空航天工业，潜艇和轻型汽车中有效。通过有效使用不同比例的环氧树脂和环氧硬化剂的基质材料，可以提高混合层压材料的机械强度和粘合性。在混合复合材料的制造中温和使用树脂和硬化剂会改变拉伸模量，基体与织物之间的粘合强度。通过在复合层压板的杂交中选择适当量的树脂和硬化剂，已经取得了令人瞩目的进展。通过将凯夫拉尔无机/有机织物和玻璃织物与环氧基质材料堆叠在一起进行杂交。为了兼具机械性能和粘结强度，透明环氧树脂和以各种比例混合的商业级固化剂作为基质材料加入到制造层压板中。通过手工铺层法将三张不同的板材分别命名为A（3：2），B（4：1）和C（2：3）嵌入，以制备混合复合材料。根据ASTM 3039进行了实验测试，以确定拉伸机械性能。根据ASTM 6862-11进行剥离测试，以研究芳纶和玻璃层之间的层间强度。使用ASTM D-2240标准，使用邵氏A和邵氏C硬度计来找出试样在不同点的硬度。最后，使用ASTM D-570标准进行了物理测试，例如密度和吸水率，以检查不同样品的溶胀率。