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Surface Modification of Boron Powder

In addition to studying the ignition and combustion mechanism of boron particles, surface modification strategies are beneficial to improving the combustion efficiency of boron powder. Surface modifications of boron powder can improve surface properties and increase the energy and reactivity of energetic systems. Energetic materials can release a considerable amount of heat during combustion, improving the surface temperature and boron's ignition and combustion properties. The energetic materials used for boron powder coatings are mainly divided into oxidizers and binders. AP is a common component in solid fuel, which has the advantages of high formation enthalpy and excellent stability and is a cheap and abundant resource of raw materials. Therefore, many studies on AP-coated boron powder have been carried out. Zhang et al. investigated the effect of surfactant and preparation processes on the properties of AP-coated boron powder. The results indicated that at an evaporation rate of 10 g·h−1, using organic solvent and a silane coupling agent before coating will lead to the more uniform deposition of coating materials on the surface of boron particles. As shown, the morphology of boron particles changes significantly after coating. The raw boron particles without AP coating show a relatively smooth surface and an irregular shape. However, B@AP particles coated with 10 and 50% of AP show a surface full of small coating agent grains. The AP coating increases the specific surface area of boron particles and acts as an oxidant by replacing oxygen to react with the boron core. Unlike AP-coated surfaces, the surface of AP/lithium perchlorate (LiP) co-coated B is tight and smooth, and no small grains are found. The compatibility of boron powder can be improved by AP coating in HTPB systems due to changes in surface characteristics. If you are looking for high quality, high purity, and cost-effective Boron powder, or if you require the latest price of Boron powder, please feel free to email contact mis-asia.

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