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采用ＳＤＣ和ＴＧ两种热分析方法研究了推进剂中两种新型聚醚粘合剂及经不同增塑剂增塑后的聚氨酯弹性的热分解行为。研究表明环氧乙烷／四氢呋喃共聚醚具有较好的热稳定性， 热分解大约从２２０°Ｃ开始； 用Ｎ－１００ 固化和加入抗氧剂均能显著提高其稳定性。聚氨酯弹性体的热失重分阶段进行， 首先是增塑剂的挥发和分解， 然后是聚氨酯网络的裂解。以聚乙二醇（ＰＥＧ）为聚醚二元醇的聚氨酯比共聚醚聚氨酯具有较低的热稳定性， 但经硝酸酯增塑后，ＰＥＧ体系比共聚醚体系表现出较高的稳定性。
Two kinds of thermal analysis methods of SDC and TG were used to study the thermal decomposition behavior of two new polyether adhesives in propellants and polyurethane elastomers with different plasticizers. Studies have shown that ethylene oxide / tetrahydrofuran copolyethers have good thermal stability, thermal decomposition starting from about 220 ° C; with N-100 curing and adding antioxidants can significantly improve its stability. The thermal weight loss of the polyurethane elastomer is carried out in stages, first of all by the volatilization and decomposition of the plasticizer followed by the cleavage of the polyurethane network. Polyethylene glycol (PEG) as a polyether glycol has lower thermal stability than copolyether polyurethanes, but the PEG system shows higher stability than the copolyether system after plasticizing with nitrates.