Boron Powder Coating with Binder

3,3-bis (aminomethyl) oxetane/tetrahydrofuran copolymer (PBT) and glycidyl azide polymer (GAP) are two typical azide energetic binders. Azide binders have several advantages, such as high heat release, no oxygen consumption during decomposition, and low molecular weight of decomposition products. The direct use of boron powder in solid fuel can result in a gelation reaction that severely affects the charging process of the fuel (i.e., the preparation process of a solid propellant). Viscosity is a crucial parameter that characterizes this process, and the binder, as the main component of solid fuel, typically has a low viscosity to facilitate charging. Therefore, the principal advantage of boron powder coated with a binder is that it improves solid boron-based fuels' charging process and enhances B's compatibility with HTPB. Zhang studied the effect of B@PBT on the charging process of boron-based propellants. The results of the acidity analysis showed that the pH values of raw boron and B@PBT were 3–4 and above 6.50, respectively, which indicated an obvious acidity decrease in B@PBT. Shows that the viscosity of B@PBT/HTPB is much lower than that of B/HTPB. With the improvement in charge process performance, fuel combustion efficiency is also improved. Less unburned boron powder was detected in the propellant combustion residues. 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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