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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Effect of temperature on the mechanical and bonding properties of a carbon-reinforced bismaleimide
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Effect of temperature on the mechanical and bonding properties of a carbon-reinforced bismaleimide

机译：温度对碳增强双马来酰亚胺的机械性能和粘合性能的影响

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摘要

For high temperature usage (200 ℃ and above) such as in certain supersonic aircraft structures, composites often used are either bismaleimides (BMI) or polyimides reinforced with carbon fibres. The composite used in this investigation was a carbon fabric 0/90° laminate of high-strength carbon fibres in a 2 x 2 twill weave impregnated with a BMI resin. To determine the mechanical behaviour of the BMI composite as a function of temperature, dynamic and static tests were preformed from -55 to +200 ℃. The coefficient of thermal expansion (CTE) of the BMI composite was measured using strain gauges. Joint strength results are also presented to illustrate the importance of the through thickness strength of composites used in adhesive joints. The results show that the modulus and strength of the BMI composite suffer little variation from -55 to +200 ℃ and that it is important to take the CTE into account for the flexural modulus determination.
机译：对于在某些超音速飞机结构中使用的高温（200℃及以上），通常使用的复合材料是双马来酰亚胺（BMI）或用碳纤维增强的聚酰亚胺。本研究中使用的复合材料是碳纤维0/90°高强度碳纤维层压板，采用2 x 2斜纹组织浸渍BMI树脂。为了确定BMI复合材料的力学行为随温度的变化，在-55至+200℃范围内进行了动态和静态测试。使用应变仪测量BMI复合材料的热膨胀系数（CTE）。还给出了接头强度结果，以说明用于粘合接头的复合材料的贯穿厚度强度的重要性。结果表明，BMI复合材料的模量和强度在-55到+200℃范围内几乎没有变化，并且在确定弯曲模量时必须考虑CTE。

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