Abstract In this study, an innovative carbon fiber reinforced polymer (CFRP) that obtains thermal storage property by implanting expanded graphite (EG)/paraffin (Pa) composite into carbon fiber interlayer (CFRP-EG/Pa composite) has been synthesized. In the CFRP-EG/Pa composite, EG/Pa composite plays a critical role in bringing about function of thermal storage for the whole composite, making CFRP composite with 9 wt% EG/Pa as an example, differential scanning calorimetry (DSC) result manifests it has melting enthalpy of 12.78 J/g and freezing enthalpy of 12.91 J/g. Besides, EG/Pa composite also contributes to improving the strength, the result demonstrates that flexural strength like CFRP-6wt%EG/Pa has been enhanced by 15.4%, and flexural strength achieves improvement at 65 °C even Pa stays in a molten state compared to CFRP without EG/Pa composite. The melting/freezing thermal cycles results reveal that CFRP-EG/Pa composites have stable and sustainable property, flexural strength have just varied in the ±1.8% interval and above two enthalpy values also change beyond 1.9% after 400 times and 800 times thermal cycles. The thermogravimetric (TG) result indicates CFRP-EG/Pa composite can be applied safely beyond 246.59 °C. Therefore, CFRP-EG/Pa composites have sustainable mechanical property and thermal property to broaden their application.

中文翻译：

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一种新型功能设计的碳纤维增强聚合物，将膨胀石墨/石蜡复合材料植入夹层：机械、热和可持续性能分析

摘要 本研究合成了一种创新的碳纤维增强聚合物（CFRP），该聚合物通过将膨胀石墨（EG）/石蜡（Pa）复合材料植入碳纤维夹层（CFRP-EG/Pa复合材料）中来获得蓄热性能。在CFRP-EG/Pa复合材料中，EG/Pa复合材料对整个复合材料的蓄热功能起着关键作用，以9wt%EG/Pa的CFRP复合材料为例，差示扫描量热法（DSC）结果表明其熔化焓为12.78 J/g，凝固焓为12.91 J/g。此外，EG/Pa复合材料也有助于提高强度，结果表明像CFRP-6wt%EG/Pa一样的弯曲强度提高了15.4%，与没有 EG/Pa 复合材料的 CFRP 相比，弯曲强度在 65°C 下甚至 Pa 保持在熔融状态下也能提高。熔融/冷冻热循环结果表明，CFRP-EG/Pa复合材料具有稳定和可持续的性能，弯曲强度仅在±1.8%区间内变化，并且经过400次和800次热循环后，两种以上的焓值变化均超过1.9% . 热重 (TG) 结果表明 CFRP-EG/Pa 复合材料可以在 246.59 °C 以上安全应用。因此，CFRP-EG/Pa 复合材料具有可持续的力学性能和热性能，可拓宽其应用范围。400 次和 800 次热循环后 9%。热重 (TG) 结果表明 CFRP-EG/Pa 复合材料可以在 246.59 °C 以上安全应用。因此，CFRP-EG/Pa 复合材料具有可持续的力学性能和热性能，可拓宽其应用范围。400 次和 800 次热循环后 9%。热重 (TG) 结果表明 CFRP-EG/Pa 复合材料可以在 246.59 °C 以上安全应用。因此，CFRP-EG/Pa 复合材料具有可持续的力学性能和热性能，可拓宽其应用范围。