DMA法评价TATB填充含氟共聚物的耐热性

用DMA研究了TATB填充氟聚物的耐热性，并用常规力学性能分析加以验证，探讨了TATB粒径及复合物制样方式对TATB填充氟聚物动力学性能的影响。结果表明，(1)使用大颗粒TATB的PBX，其耐热温度高于使用小颗粒TATB的PBX耐热温度；(2)等静压制试样的耐热性好于模压制试样的耐热性；(3)在耐热温度处，TATB填充含氟共聚物的力学性能呈现突变，表明DMA技术可用于表征材料的耐热性。

Heat-resistance of TATB-filled Fluoro-copolymer by Using DMA Technique

The heat-resistance of TATB-filled fluoro-copolymer was studied by using DMA technique and validated with mechanical property. The effects of the size of TATB particles and the preparation methods of samples on dynamic mechanic property of TATB-filled fluoro-copolymer were discussed. The results showed that:(1)the heat-resistant temperature of PBX with large TATB particles was higher than that with small TATB particles; (2) the heat-resistance of sample prepared by isostatic press was superior to that of sample pressed mechanically; (3)the mechanical property of TATB-filled fluoro-copolymer was changed sharply at the heat-resistant temperature,showing that DMA technique can be used to assess the heat-resistance of TATB-filled fluoro-copolymer.