Experimental work was carried out in search for the potential of aminoguanidium 5,5' -azobis-tetrazolate (AGAT) / copper(II) oxide (CuO) mixtures as a gas generating mixture. Altering the fuel/oxidizer ratio, linear burning rate test, 4-liter closed vessel test, and 60-liter tank test were carried out to study on the burning characteristics of the mixtures. The quantitative and qualitative analysis of the combustion gases of a 4-liter closed vessel and a 60-liter tank were carried out, and the results were compared with those of 5-amino-1H-tetrazole (5-ATZ) / Sr(NO3)2 mixture. The linear burning rate of AGAT / CuO mixtures reached its maximum when the mixture was AGAT rich. Internal pressure of the 4-liter closed vessel also reached its maximum when the mixture was fuel rich, but the combustion temperature reached its maximum at a stoichiometric ratio. In the 60-liter tank test, the maximum pressure of AGAT / CuO mixture was one third of the maximum pressure of 5-ATZ / Sr(NO3)2 mixture. In the 4-liter closed vessel test, the hazardous gases such as CO, NO, NO2, NH3, HCN, and N2O were found in combustion gases of AGAT / CuO mixture but the concentration of all measured hazardous gases were less than those of 5-ATZ / Sr(NO3)2, except for NH3 and NO2. The results suggest the possibility of AGAT / CuO mixture as a novel gas generating mixture for automobile airbags and other uses.
法規上火薬類に属さないアミノグアニジウム5,5’-アゾビステトラゾレイト（AGAT）と酸化銅（II）混合物についてガス発生能力を調べた。本研究ではAGATと酸化銅（II）混合物について，組成比を変化させて，線燃焼速度測定，4リットル密閉容器試験，燃焼生成物分析を行い，量論混合試料については，60リットルタンク試験，燃焼生成物分析を行い5-アミノ-１H-テトラゾール（5-ATZ）と硝酸ストロンチウム混合物の結果と比較した。AGATと酸化銅（II）混合物は燃料過剰で最大燃焼速度を示した。密閉容器試験では燃料過剰で最大圧力となったが，燃焼温度は量論混合物で最大となった。化学平衡計算によれば燃料量を増すことでガス量が増加することがわかった。60リットルタンク試験ではAGAT混合物の燃焼圧力は5-ATZ混合物の約1/3であった。また，密閉容器試験の燃焼生成気体は，有害な CO，NO，NO2，NH3，HCN，N2Oが同定されたが，NO2とNH3以外の濃度は5-ATZ混合物より小さかった。
AGAT, CuO, Combustion, Gas generating mixture.