中文摘要：

采用裂解气相色谱-质谱联用仪（PyGC-MS）分析了聚醚砜（PES）在温度500～700℃内热裂解形成的产物种类及其相对含量.结果发现：500℃下PES热裂解形成的主要产物是苯酚,550℃时裂解才产生SO_2;随着裂解温度的升高,裂解产物的种类越来越多,SO_2逐渐成为主要的裂解产物.最后根据不同温度下形成的裂解产物的种类及其相对含量推测了PES产生热裂解的机理.

英文摘要：

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