Research On Explosives Containing Aluminum Fiber

The advantage of explosive, compare to other energy, is high energy density quick response and high power. The power of the weapon is from Explosive, so the war was form the age of cold weapon to the age of hot weapon. Otherwise explosive is widely used in national economic, such as ore mining, tunnel excavation, blasting demolition and oil gas mining. All the researcher of explosive always want to get explosive which has high power with for a long time. With the development of science and technology of military and civil engineering, explosive not only should has high power, but also should has high sEAFty and high mechanical strength. Now the properties of explosive become the barrier of development of science and technology of military and civil engineering. but most the researchers focus on the single performance, such as energy density or seafty.In order to satisfy the need of new science and technology of military and civil engineering, this paper proposes a new concept explosive, which is the explosive containing aluminum fiber named EAF, to improve the explosive's multiple-performance. the characteristics of EAF is high energy density high sEAFty and high mechanical strength.On the basis of explosion theory, the aluminum power is a common ingredient in energetic materials, the aluminum is used increase the energy and the flame temperature in energetic. at the same time the explosive containing aluminum power has two problem:first the aluminum power will be the heat pot which will increase the sensitivity of explosive; second the surface area of aluminum power is so large so that the activity is low. so we want EAF can also increase the energy as aluminum power, at the same time solve that problems of aluminized explosive. EAF have three major advantage:first aluminum fiber mixed to explosive can also increase the energy as aluminum power; second the good thermal conductivity of aluminum fiber can transfer the heat of heat pot to peripheral region, so that it can decrease the sensitivity of explosive; third the surface area of aluminum fiber than that of aluminum power, therefore activity of aluminum fiber is large than that of aluminum power.According to the theory of fiber reinforcement, fiber can reinforce the mechanical strength of matrix material. so aluminum fiber can reinforce the mechanical strength of explosive.EAF use physics and chemistry property of aluminum fire to improve the performance of explosive. Before explosion the physics property of mechanical property and diathermancy can reinforce the mechanical strength and improve security; when explosion the reaction heat of aluminum can increase the energy of explosive.Therefore explosive containing aluminum fiber (EAF) has good properties, such as high energy density, high security and good mechanical strength. So EAF is a new method solved problem of properties of explosive. we have researched the properties of EAF, this paper will introduce it as blow:1,preparation method of EAFsame preparation method of EAF is proposed and a series of EAF is prepared by same sEAFty method in laboratory.2,Study on energy of EAF"Break-oxidation" reaction model is proposed:first of all the CHNO mixture (explosive which chemical composition is the form CaHbNcOd) react and product detonation production which is hot, high speed and high press. And then the aluminum fiber is break up and react with detonation production. So the reaction of fire can increase the energy of explosive. The experimental results can prove the model:the energy of the TNT explosive containing aluminum fiber is 1.29 times more than that of TNT, at the same time RDX containing aluminum fiber is 1.31 times more than that of RDX and 1.64 times more than that of TNT.3,Influence factor of energy of EAFSame major factor which influence the energy of EAF has been researched. The experimental results show that:content of aluminum fiber can obviously influence the energy of EAF, and the EAF containing 20% aluminum fiber has the highest energy. The diameter is more small, the energy of EAF is more high. The detonation heat and pressure of CHNO is more high. the energy of EAF is more high. Increase the sanction of EAF can increase the energy of EAF.4,Mechanical strength of EAFAccording to the theory of fiber reinforced material, aluminum fiber can also reinforce explosive charge, and the experiment of mechanical strength of EAF has been done. The experimental results show that Aluminum fibre can obviously increase the mechanical strength. the compressive strength of explosive containing aluminum fiber is 2.4 times more than that of TNT. the results also show that the EAF has more aluminum fiber the strength is more high, for example the strength is 4.7MPa when the EAF contain 14% and strength is 6.8MPa when the EAF contain 23%.5,Sensitivity of EAFFirst of all the sensitivity of EAF is analyzed, the results can prove that aluminum fiber can decrease the sensitivity of EAF. First Because aluminum can reinforced the explosive,so the scalar of heat pot will be less, so the EAF will be more sEAF. Second because of he good thermal conductivity of aluminum fiber, the heat of can be transferred by aluminum fiber.so the "temperature rising-reaction-temperature rising" is change to "temperature-transfer-temperature reduce". Experiment has done to research the sensitivity of EAF, The experimental results show that aluminum fiber can decrease the sensitivity of EAF. Because the sensitivity of TNT containing aluminum fiber sand the sensitivity of TNT containing aluminum fiber are both low than TNT and RDX.