Research on heat resistance of polysulfone amide fibers

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.