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采用热失重分析法研究了2, 6-二叔丁基对甲基酚(BHT)、吩噻嗪、亚磷酸三苯酯和中定剂二苯基二甲基脲等4种典型稳定剂对推进剂中EO/THF共聚醚及聚醚聚氨酯粘合剂的热氧稳定效果。吩噻嗪对共聚醚的热氧降解以及聚醚聚氨酯初始阶段的热氧降解具有良好的稳定作用,但在较高温度下,对聚醚聚氨酯的稳定效果急剧下降。亚磷酸三苯酯对共聚醚和聚醚聚氨酯的稳定效果均较差, 但与BHT组合使用能获得较好的结果。中定剂对共聚醚没有稳定作用, 但对聚醚聚氨酯表现出较好的稳定效果。BHT对共聚醚和聚醚聚氨酯均有较好的稳定效果, 尤其是与中定剂配合使用
Thermogravimetric analysis was used to study the effects of four typical stabilizer pairs, such as 2,6-di-tert-butylpara-methylphenol (BHT), phenothiazine, triphenyl phosphite and diphenyldimethylurea Thermal Oxygen Stabilization of EO / THF Copolyether and Polyether Polyurethane Binder in Propellants. Phenothiazine has a good stabilizing effect on thermo-oxidative degradation of polyether polyether and thermo-oxidative degradation of polyether polyurethanes. However, at higher temperatures, the stabilizing effect on polyether polyurethanes decreases sharply. Triphenyl phosphite stabilizes copolyesters and polyether polyurethanes poorly, but good results can be obtained when combined with BHT. The medium agent has no stabilizing effect on the copolyether, but shows a good stabilizing effect on the polyether polyurethane. BHT copolyesters and polyether polyurethanes have better stability, especially with the use of medium dose