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- 2017
形状记忆环氧树脂及其四枚缎纹碳纤维织物增强环氧树脂的动态力学性能
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Abstract:
采用动态力学分析仪对研制的形状记忆环氧树脂（Shape memory epoxy polymer，SMEP）及三种四枚缎纹碳纤维织物增强环氧树脂复合材料的动态力学性能进行了测试，测出了玻璃化转变温度Tg、储能模量E和损耗角正切值tan δ。试验表明，SMEP及四枚缎纹碳纤维织物增强环氧树脂复合材料均有显著的相变力学行为特征，相变前后E差异超过一个量级，表明其具有良好形状记忆能力。在SMEP中植入碳纤维织物增强复合材料会导致Tg和tan δ降低，而E显著增强；对同一种编织物的形状记忆复合材料经向和纬向的Tg和tan δ基本相同，但E相差较大。 The dynamic mechanical properties of shape memory epoxy polymer (SMEP) and 4-harness satin carbon fiber weave reinforced composites were tested by DMA 8000, the glass-transition temperature Tg, the storage modulus E, the tangent of loss angle tan δ were calculated. The experimental results indicate that SMEP and 4-harness satin carbon fiber weave reinforced composites have significant phase transition mechanical behavior, in which E differs beyond one-order around Tg. This prove that the SMEP and 4-harness satin carbon fiber weave reinforced composites have good shape memory capacity. The thermoset SMEP involved with three kinds of carbon fiber weave reinforced composites will lead to Tg and tan δ reduction, but E is significantly enlarged. Tg and tan δ of the same SMEP carbon fiber weave reinforced composites are almost in common, but E differs greatly in its warp direction and weft direction. 航天先进技术联合研究中心技术创新项目（USCAST2015-24）
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