Comparative Research On Properties Of The HNIW Modified By Nano-carbon Materials

In recent years, carbon nanomaterials has been widely studied in the energy field based on its excellent physical and chemical properties, also increasing the research in energitic materials, but inadequate into the mechanistic studies deeply and systematically. In this paper, mechanisitic of carbon nano-materials as the additive have been comparatively studied starting with the sensitivity regulation of HNIW. The main contents are as follows:1. Firstly, mix the fullerence, carbon nanotubes and graphene in different density with the HNIW and calculate the oxygen balance and the blasting parameters of such samples. A conclusion show that the performance of the HNIW will be reduced when the carbon nanomaterials were added. Moreover, the influence level will be obvious when the content is more than 0.5%, and little effect when the content is less than 0.2%, which shows a more appropriate content. While, the results of the fullerene, carbon nanotubes and graphene influence the sensitivity performance of HNIW in different contents shows that the carbon nano-materials can reduce the mechanical sensitivity effectivity but a bad compatibility with the HNIW. Inside the Graphene has a best affect to the sensitivity of the HNIW, which can increase the impact sensitivity of HNIW from 25.1cm to 30.2cm, as well the friction sensitivity from 100% to 88% at 0.2% percent added. However, when the content of Graphene is reduced to less than 1%, a lower adverse effects on electrostatic sensitivity and a better compatibility with the HNIW is discovered. Therefore, the species of the materials was defiened to be the Graphene and the contents is preferably less than 0.2%.2. Considering about the carbon nano-materials would reduce the energy capability of the HNIW, the nitration functionalized graphene was prepared by covalent functionalization technique. Prepare the corresponding derivatives of graphene by reduction and nitrification the graphene oxide. Then defined the degree of reduction and nitrification were defined by the analysis of FLIR?Elemental analysis and TG.3. The recrystallization method was used to compound the HNIW with the carbon nanomaterials. The test results of the analysis of sensitivity, thermal conductivity and the thermal decomposition properties shows such regular pattern. 0.2% of the reduction graphene oxide increase the impact sensitivity of HNIW from 25.1cm to 32.5cm, and the friction sensitivity from 100% to 72%, improve the 5s explosion temperature from 267.5 ? to 270.2?, which has a higher improvement than the graphene in the same percentage added and has the best influence to the HNIW in these performance. However, 0.2% of the nitrification graphene oxide has the best effect on the electrostatic sensitivity as improve the ignition energ from 0.906 J to 1.27 J. In summary, the reduced graphene oxide is propitious to apply in the sensitive explosive system to reduce the explosive sensitivity, and the graphene nitrate is suitable for reduce electrostatic sensitivity and avoid reducing the energy output in form fomulas of ignition composition. After the kinetic calculation by thermal analysis of the complex system, such laws were discovered. The graphene and functionalized graphene in a low content would improve the thermal conductivity and fluidity of HNIW, and then obstacles the generation of the “hot spot”, increase the activation energy and reduce the sensitivity.