首页|Preparation and combustion properties of laminated sticks of B-CuO and B-Bi2O3
Preparation and combustion properties of laminated sticks of B-CuO and B-Bi2O3
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To explore the composite process of B-CuO and B-Bi2O3 two-component laminated sticks,obtain the corresponding sticks with good printing effect,and explore the energy release behavior.In this study,boron,copper oxide,and bismuth trioxide powders were dispersed in the dispersed phase(DMF)using F2602 as a binder,and the construction of two-component B-CuO,B-Bi2O3,three-component micro-composite,and three-component macro-composite sticks were realized with the help of double nozzle direct ink writing(DIW)technique respectively.The resulting sticks were ignited by a nichrome wire energized with a direct current,and a high-speed camera system was used to record the combustion behavior of the sticks,mark the flame position,and calculate the rate of ignition.The results showed that the B-CuO stick burning rate(42.11 mm·s-1)was much higher than that of B-Bi2O3(17.84 mm·s-1).The formulation with the highest CuO content(ωCuO=58.7％)in the microscale composite of the sticks also had the fastest burning rate of 60.59 mm·s-1,as the CuO content decreased(ωCuO=43.5％,29.3％),its burning rate decreased to 34.78 mm·s-1,37.97 mm·s-1.The stick with the highest copper oxide content(ωCuO=60％)also possessed the highest burning rate(48.84 mm·s-1)in the macro-composite sticks,and the burning rates of the macro-composite sticks with component spacing of 0.1 mm,0.2 mm,and 0.5 mm were 43.34 mm·s-1,48.84 mm·s-1,and 40.76 mm·s-1.
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