Due to the surface acidic impurities, amorphous boron powder has poor compatibility with hydroxyl-terminated polybutadiene. For increasing boron amount in propellant, boron powder need modification treatment. Boron powder’s particle size is also an important factor affecting the process performance of the fuel-rich propellant. Boron combustion is slow and the ramjet fills fuel efficiency and is low. To consider from the agglomerate of combustion process, diameter of the boron particles should be as small as possible. Thus it can ensure the afterburning efficiency. The diameter should less than 1μm. The only way to solve this problem is to increase the particle size of boron powder particles. It means amorphous boron powder with reunion modified can get boron in appropriate particle size. It will effectively improve the process performance of the boron-rich fuel propellant.

Amorphous Boron Powder Boron meet again to increase the fuel, thus increasing the energy, but also contain a guide to B under the same conditions, the General Assembly to improve the content of fuels produced in boron-oxidant, and ultimately increase the rate of combustion of the fuel. The study also found that the modified particles together to improve the performance of boron-rich boron test fuel of the combustion of amorphous boron powder of fuel have been tested and modified the various factors of the particles in a set of boron to fall to meet the best parameters to create boron.

Drying of the melting process to ensure the consolidation of the density of the particles and the shape of the boron-bearing surface that you want to compress. To compress the current process, the plasticity of the particles of boron not hardened during the meeting in opposition to the pressure to maintain a pressure in the discharge of plastic deformation due to the increased resistance to pressure, the greater the degree of compression. Suffer In this case, the force generated by the pressure and centrifugal force to control the rotor, the higher the speed, the greater the clamping force is that the dense particles with a density of the particles greater than boron. The density of the powder density bulk density of real and boron in two of two methods for measuring the density is substantially similar. The density of the particles reflects the effective porosity of the particles to the density of the particles of boron blister assembly.

The powder of boron in the melting process, perhaps because the particles of particles of boron to bind moisture, but the humidity is very high, particles spinning in a single event in the adhesive in a position of pre-consolidation of the particles of boron. Pre-consolidation pressure of compressed particles of boron in particular, the production of plastic deformation, the most complete recovery of plastic deformation in the adhesive, the most intense RCC particle lamination process, the greater the roundness, the best.

The smooth surface of the particles smaller particles that leave the opposition movement, including the prevention of fuel particles with smooth surface, low density and high viscosity. In addition, under the action of the molten mass in the form of aggregates of the solvent in the capillary suction between the particles, the evaporation surface of the particles, dissolved in a common solvent adhesive deposited particles of volatile solvents, which stabilize the concentration of particles in the formation of particles. In this process, the process temperature is the most important factor which influences the agglomerated particles of boron. Studies of the solution, the surface roughness of boron different temperatures

After reunion modified of amorphous boron powder by metal powder supplier, boron powder’s particle size increases and the surface morphology is greatly improved. It is substantially lower than the surface area, which is very beneficial to improve the technological properties of the boron-rich fuel propellant. The propellant slurry can improve the content of the pure boron, ultrafine AP and solid components. In the reunion process, the use of styrene solvent, a lower temperature and longer curing time is good for preparation of reunion boron particles with a high spherical and smooth surface. The reunion process needs further improvement in order to increase the density of reunion boron.Source:http://www.mhcmp.com