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用 Ｄ Ｓ Ｃ和 Ｔ Ｍ Ａ 测定了高分子量聚苯硫醚（ Ｈ Ｍ Ｗ Ｐ Ｐ Ｓ）树脂的玻璃化转变温度（ Ｔｇ ）、结晶温度（ Ｔｃ）、熔点（ Ｔｍ ）等热转变参数，研究了热退火处理对这些转变参数的影响。结果表明，两种方法测定的 Ｐ Ｐ Ｓ的热转变温度是一致的。退火处理可以使 Ｐ Ｐ Ｓ的 Ｔｇ 、 Ｔｍ 得到提高。用热失重分析研究了 Ｈ Ｍ Ｗ Ｐ Ｐ Ｓ在氮气中的热稳定性，求得了热分解反应的动力学参数。
The thermal transition parameters such as glass transition temperature (Tg), crystallization temperature (Tc) and melting point (Tm) of high molecular weight polyphenylene sulfide (H M W P P S) Effect of thermal annealing on these transition parameters. The results show that the thermal transition temperatures of P P S determined by the two methods are consistent. The annealing treatment can increase the Tg, Tm of P P S. The thermal stability of H M W P P S in nitrogen was investigated by TG analysis. The kinetic parameters of the thermal decomposition reaction were obtained.