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首页> 外文期刊>Journal of Applied Polymer Science >Joining of carbon fiber reinforced polymer laminates by a novel partial cross-linking process
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Joining of carbon fiber reinforced polymer laminates by a novel partial cross-linking process

机译：通过新颖的部分交联工艺连接碳纤维增强的聚合物层压板

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摘要

Direct joining of partially cross-linked and freshly infiltrated carbon fiber reinforced epoxy resin plates made from HTA/RTM6 is investigated as function of the partial curing degree. Partial cross-linking maintains a certain chemical reactivity of the thermosetting resin which can be used for bonding to a second, freshly infiltrated resin part. A final curing cycle guarantees complete cross-linking of the joined component. The bonding behavior and the interface morphology of the joined plates are analyzed by mechanical testing, acoustic emission analysis and microscopy. A significant dependence of the bonding and interfacial properties on the partial curing degree is found. Very low and very high partial curing degrees (below 70% and above 80%) result in low fracture toughness and discontinuous crack propagation. Intermediate curing degrees between 70% and 80% mainly show high fracture toughness, stable crack propagation and a ripple like interface morphology. The latter is created by the surface morphology of the partially cross-linked plate with the typical peel-ply imprint and results in a high contact surface and mechanical interlocking. The combination of chemical reactivity and high contact surface seems to be advantageous for the enhanced fracture toughness and the improved failure mode of samples with intermediate partial curing degree. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42159.
机译：研究了由HTA / RTM6制成的部分交联的和新渗入的碳纤维增强环氧树脂板的直接接合与部分固化度的关系。部分交联保持了热固性树脂的某种化学反应性，该化学反应性可用于粘结到第二个新渗透的树脂部分。最终的固化周期可确保连接的组件完全交联。通过机械测试，声发射分析和显微镜分析连接板的结合行为和界面形态。发现粘结和界面性质对部分固化度的显着依赖性。极低和极高的部分固化度（低于70％和高于80％）会导致较低的断裂韧性和不连续的裂纹扩展。介于70％和80％之间的中间固化度主要表现出高断裂韧性，稳定的裂纹扩展和类似界面形态的波纹。后者是由具有典型剥离层压印的部分交联板的表面形态所产生的，并导致高接触表面和机械互锁。化学反应性和高接触表面的结合对于提高断裂韧性和改善中间偏硫化程度的样品的失效模式似乎是有利的。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42159。

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