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本文通过对复合材料高温下的力争比能变化规律的分析，研究了从高温力学性能变化评价复合材料耐热性的问题。对典型复合材料T300／HD03在室温至170℃范围内的纵向及横向弯曲性能和层间剪切性能进行了测试，并对两种试验方法评价复合材料耐热性进行了对比分析。
In this paper, through the analysis of the law of specific energy changes in high temperature of composites, the problem of evaluating the heat resistance of composites from the change of mechanical properties at high temperature was studied. Longitudinal and transverse flexural properties and interlaminar shear properties of typical composites T300 / HD03 at room temperature to 170 ° C were tested. The heat resistance of the two composites were compared.