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Emulsion and the micro-jet nozzle Research and Development


Therefore, better emulsion. Through the pressure contour can clearly see that the simulation results and experimental results are very consistent, the results improved nozzle structure has great reference value. 5 The discussion will be standing emulsion layer, it is because of emulsion or other field in the gravitational field, the unstable characteristics are more or less, that the system will eventually produce two-phase stratification, which is light phase (oil droplets) go up,[link widoczny dla zalogowanych], the heavy phase (water droplets) settlement. For the simple emulsion, if ignored Brownian motion, sedimentation, or dispersed droplets floating rate, refer to the relevant settlement formula, Stokes Law can be said that: ... Mexico! B! ?! R, tt0-18, where: u. For the settling velocity (negative for the floating rate),[link widoczny dla zalogowanych], P. The density of the internal phase, P is the density of the Foreign Secretary, Foreign Secretary of the beetles for the base Pi j �� i � a police Sharp I22 Hz emulsion micro-jet nozzle of development and research and viscosity, d. The droplet diameter. From (5) can be seen, reducing the dispersed particle size, reducing the density difference between two phases, increasing the viscosity of continuous phase, can increase the stability of the emulsion. The experiments were carried out under the pressure of 100MPa, in fact, is not very accurate, because the compressor can not provide a stable pressure of 0.8MPa, leading to the pump can not provide a steady pressure, but this error is negligible, the experimental results are not have any substantive impact. In the course of the experiment, often clogging the nozzle, which is a small amount of impurities from raw material caused. Because the diameter of the nozzle is small, so very vulnerable to congestion, with pure water instead of tap water after, and carefully clean the mixing tank, the situation has improved. The experiment measured the diameter of the droplets lOtxm floating rate of about 2cm / h, while the floating rate of about 1m lO oil drop one per cent of oil droplets, that is, to float 100h cm,[link widoczny dla zalogowanych], therefore, the experiment always lm distribution of emulsified oil droplets from the size of the rate of emulsification effect to measure the merits of the standard nozzle. 6 Conclusion The following conclusions: (1) Y-type nozzle and cascade nozzle spray emulsion better than single nozzle, the nozzle is better than Y-cascade nozzle; (2) the emulsifier does not improve the emulsifying effect of device , but can increase the stability of emulsion; (3) the same experimental conditions,[link widoczny dla zalogowanych], the fresh latex particle size distribution to the ideal than the old; (4) The micro-jet emulsification device has high efficiency, easy operation, simple structure,[link widoczny dla zalogowanych], uniform distribution of particles from the advantages of intensive compared with conventional emulsifying devices have advantages, can be widely used in fine emulsion, such as dispersion and liposome production and experimental development.
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