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以Cu(NO32)·3H2O、Cr(NO3)2·9H2O和柠檬酸为原料,采用柠檬酸配位法合成了超细CuCr2O4催化剂,用XRD、SEM对产物进行了表征,用DTA研究了CuCr2O4对高氯酸铵(AP)热分解性能的影响,测量了加入CuCr2O4后CMDB推进剂的燃速。结果表明,在最佳合成条件下(即nCu∶nCr=1∶2,温度700℃)可制得纯四方尖晶石型CuCr2O4。加入超细CuCr2O4后,AP的高温分解温度提前至339.6℃,CMDB推进剂在6MPa下的燃速从35.84mm/s提高到61.00mm/s,压强指数从0.62降低到0.14。
Cu (NO32) 3H2O, Cr (NO3) 2 · 9H2O and citric acid were used as raw materials to synthesize ultrafine CuCr2O4 catalysts by citrate coordination. The products were characterized by XRD and SEM. The effects of CuCr2O4 on The effect of the thermal decomposition of ammonium perchlorate (AP) on the burning rate of CMDB propellant after addition of CuCr2O4 was measured. The results show that the pure tetragonal spinel CuCr2O4 can be obtained under the optimum conditions (nCu: nCr = 1: 2, temperature 700 ℃). After adding ultrafine CuCr2O4, the pyrolysis temperature of AP advanced to 339.6 ℃, the burning rate of CMDB propellant increased from 35.84mm / s to 61.00mm / s at 6MPa, and the pressure index decreased from 0.62 to 0.14.