中文摘要：

在热重分析测试结果的基础上,采用裂解气相色谱-质谱联用仪（PyGC-MS）分析双酚A 型聚砜在500耀700益 范围内不同温度下热裂解形成的产物种类及其相对含量.通过对比不同温度下的裂解产物,发现500益时PSU裂解 形成的主要产物是苯酚,550益时才检测到SO2.随着裂解温度升高,裂解产物的种类增多, SO2的相对含量逐渐升高, 直到700益取代苯酚成为最主要的裂解产物.最后,该文根据不同温度下产生的裂解产物的种类及其相对含量推测 PSU产生热裂解的机理.

英文摘要：

Pyrolysates of polysulfone （PSU） at various temperatures within the temperature range from 500 益 to 700 益 and their relative contents were analyzed by pyrolysis gas chromatography- mass spectroscopy （PyGC-MS）. It was found that its major pyrolysate produced at 500 ℃ was phenol, and sulfur dioxide as its pyrolysate was not produced until 550 ℃.As the pyrolysis temperature was elevated, the kinds of the generated pyrolysates were increased obviously, and the relative content of sulfur dioxide was gradually increased, becoming the richest pyrolysate at 700 益.Finally, the pyrolysis mechanism of PSU was speculated based on the pyrolysates formed at various temperatures and their relative contents.