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探讨了使用新的饱和碳氢系粘合剂ＨＨＴＰＩ的推进剂与使用粘合剂ＨＴＰＢ系推进剂的热分解与燃烧特性。ＨＨＴＰＩ系推进剂产生热分解反应的温度比ＨＴＰＢ系推进剂的约低２０℃～３０℃。ＨＨＴＰＩ为吸热分解，而ＨＴＰＢ环化或交联反应显示出放热性。随着ＡＰ含量的增加，ＨＨＴ－ＰＩ系推进剂的放热量也增加，接近ＨＴＰＢ系推进剂的放热量。根据热分解与燃烧中断后表面物质分析可知，在热分解的初期阶段，首先是ＨＴＰＢ的双键急剧减少，同时大部分氨基甲酸乙酯键分裂，由于环化与交联反应而变为焦油状。另一方面，ＨＨＴＰＩ的特征是侧链甲基相连的第３级碳原子与主链中相邻的碳原子之间的键断开，变为液状。从火焰传播试验可知，用ＨＨＴＰＩ系推进剂时，ＡＰ含量少的试样，由于覆盖表面的液状聚合物的影响而不能持续燃烧，而接近最高装填密度的ＡＰ为８０％时可以持续燃烧，并可达到与ＨＴＰＢ系推进剂同样的火焰传播速度。
The thermal decomposition and combustion characteristics of propellants using HHTPI, a new saturated hydrocarbon-based binder, and propellants using the binder, HTPB were discussed. HHTPI propellants pyrolysis reaction temperature than HTPB propellants about 20 ℃ ~ 30 ℃. HHTPI is endothermic and HTPB cyclization or cross-linking shows exothermicity. With the increase of AP content, the exothermicity of HHT-PI propellants also increased, close to that of HTPB propellants. According to the analysis of the surface material after the thermal decomposition and the combustion interruption, the double bonds of HTPB decrease sharply at the initial stage of thermal decomposition, and at the same time most of the urethane bonds are cleaved and become tarry due to cyclization and crosslinking reaction . On the other hand, HHTPI is characterized by the breaking of the bond between the tertiary carbon atom to which the side chain methyl group is attached and the adjacent carbon atom in the main chain to become liquid. From the flame propagation test, it can be seen from the flame propagation test that when the HHTPI-based propellant is used, the sample with a small AP content can not be continuously burned due to the influence of the liquid polymer covering the surface, and the AP with the highest packing density can continue burning at 80% Can reach the same flame propagation speed as HTPB propellant.