关键词: 推进剂粘合剂;燃烧催化剂;热分解;金属催化剂;金属粉末

Abstract: The effects of nano metal powders(Cu,Ni),super fine metal powders(Al,Ni) and normal metal powders(Cu,Al) on the thermal decomposition characteristics of glycidyl azide polymer (GAP)was investigated.DSC results shown that there are two exothermal peaks on DSC curve of GAP/metal powder, in which the peak at higher temperature resulted from metal reacting with oxygen is influenced by atmosphere, while the one at lower temperature resulted from GAP decomposition has no relation with atmosphere The effects of copper powder on GAP is the greatest in different metal powders The thermal decomposition peak temperature of GAP decreases 33 2 ℃ in the presence of nano copper powder, and decreases 12 9 ℃ in the presence of normal copper powder However,for other metal powders, their influences on thermal decomposition characteristics of GAP are rather small In GAP/ nano copper samples, the influence of nano copper on thermal decomposition characteristics becomes weak with the decrease of the nano copper, while there is no linear relation between nano copper and its influence degree on GAP TG results show that metal powders do not change the stage of GAP decomposition,while it influence the GAP mass loss temperature Lastly,the mechanism for the effects of namo copper on thermal decomposition characteristics of GAP is analyzed

Key words: Propellant binder;Combustion catalyst;Thermal decomposition;Metal catalyst;Metal powder