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对DMA法评价复合材料耐热性进行了研究。采用PE公司的DMA－7型和Dupont983型动态分析仪对T300/VHD03复合材料进行了一系列动态力学性能测试，分析了其结构与性能及性能与温度、频率的关系。研究表明，DMA的E－T谱图中的拐点是复合材料使用的最高温度，用DMA法评价复合材料的耐热性方便、迅速，可作为初步选材的方法。
The DMA method was used to evaluate the heat resistance of composites. The dynamic mechanical properties of T300 / VHD03 composites were tested by PE-DMA-7 and Dupont983 dynamic analyzers. The relationship between structure and properties, performance and temperature and frequency was analyzed. The results show that the inflection point in the E-T spectrum of DMA is the maximum temperature of the composite material. It is convenient and rapid to evaluate the heat resistance of the composite material by the DMA method, which can be used as a preliminary material selection method.