Effect of internal phase particle size on aging process of site mixed emulsion matrix
In order to study the effect of internal phase particle size on the aging process of site mixed emulsion matrix,the programmable high-low temperature box was used to periodically store the emulsion matrixto accelerate the matrix aging.Laser particle size analyzer,optical microscope,water solubility method and digital viscometer were used to test the changes of internal phase particle size,microstructure,ammonium nitrate crystallization and viscosity during the aging process of emulsion matrix.The test results show that the site mixed emulsion matrix with an average internal particle size of 9.47 μm has been seriously crystallized after one cycle of storage.After 3 cycles of storage,the ammonium nitrate precipitation is 3.32 times of that before storage,and the viscosity increases by 45.72％.For the site mixed emulsion explosive with an average internal phase particle size of 3.76 μm,the average internal phase particle size increases to 10.06 μm after 2 cycles of storage,the ammonium nitrate precipitation is 1.43 times of that before storage,and the viscosity increases by 10.18％.After 3 cycles of storage,the ammonium nitrate precipitation is 1.71 times of that before storage,and the viscosity increases by 14.48％.The smaller the particle size of the internal phase,the better the storage stability of the site mixed emulsion matrix.In actual production,considering the pumping of matrix and its safety,site mixed emulsion matrix with particle size less than 5 μm and reasonable viscosity should be prepared for storage and use.
site mixedemulsion explosiveinternal phase particle sizeagingstorage stability
万方数据
维普
