芳砜纶纤维耐热性能的研究

Research on heat resistance of polysulfone amide fibers

为了研究芳砜纶纤维的热稳定性，采用差示扫描量热法分析其热力学性能，采用热失重法分析其热分解状况，并测定其不同温度不同时间热处理之后的力学性能．实验结果为：该纤维的玻璃化温度为257．21℃．起始分解温度为445．2℃；在200℃高温处理1—24h，纤维形态及强伸性能仍没有明显变化，说明其具有优良的耐高温特性。

In order to study the heat stability, the thermodynamic properties and thermo-decompose conditions of polysulfone amide fibers are analyzed respectively with differential scanning calorimeter and thermogravimetry, and after the fibers being heated for certain times in different temperatures the strength and elongation properties are measured . The experimental results showed that Tg of the fibers was 257.21℃, and it was decomposed in 445.2℃, and the form, strength and elongation of fibers didn＇t change evidently after treated for 24 h at 200℃. It is proved that polysulfone amide fibes have fine heat-resistance.