The thermal stability of the T700 carbon fiber epoxy composites, which had been tested under different conditions (nonvibration plus nonscrubbing airflow, vibration, scrubbing airflow, and vibration plus scrubbing airflow), were investigated according to the obtained weight loss behavior, integral program decomposition temperature (IPDF), and activation energies (E) by using thermogravietry‐differential thermal analyzer. The results indicate that the weight loss ratio, IPDF, and E of T700 carbon fiber epoxy and its residues in the third and fourth layers are similar under the nonvibration plus nonscrubbing airflow and vibration, and the thermal stability under the vibration condition is slightly stronger. In addition, the weight loss ratio, IPDF, and E of the epoxy and its residues in materials are also similar under scrubbing airflow and vibration plus scrubbing airflow, and the thermal stability under vibration plus scrubbing airflow is better. However, it is significantly less than the thermal stability of materials under nonvibration plus nonscrubbing airflow and vibration. Therefore, it can be found that the vibration exacerbates the flame severity and the scrubbing airflow has a significant cooling effect on the material during the airworthiness fire protection test, which have guiding significance on the airworthiness fire prevention items formulation of carbon fiber composite.

中文翻译：

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耐航性试验后典型碳纤维环氧复合材料的热稳定性研究

根据获得的失重行为，整体程序分解温度，研究了T700碳纤维环氧复合材料在不同条件下（非振动加非洗涤气流，振动，洗涤气流以及振动加洗涤气流）的热稳定性。 （IPDF），以及使用热重差热分析仪的活化能（E）。结果表明，在无振动，无气流和振动的情况下，T700碳纤维环氧树脂及其在第三层和第四层中的残留物的失重比，IPDF和E相似，并且在振动条件下的热稳定性稍强。另外，失重率，IPDF和E在洗涤气流和振动加上洗涤气流的作用下，环氧树脂及其材料中的残留物也相似，并且在振动加上洗涤气流下的热稳定性更好。但是，它远小于材料在非振动加非洗涤气流和振动下的热稳定性。因此，发现在适航性防火试验中，振动加剧了火焰的严重性，并且洗涤气流对材料具有明显的冷却作用，这对碳纤维复合材料的适航性防火项目配方具有指导意义。