The possible behaviors of droplet in the condensate include spreading, droplet formation and mixing. Generally put the liquid with smaller surface tension into the liquid with larger surface tension and the surface will spread out, otherwise it is easy to form droplets. Dimethylsilicone oil is the lowest surface energy condensing agent (liquid paraffin 0.035n /m, vegetable oil 0.035n /m, dimethylsilicone oil 0.021n /m) among common water-soluble dripping pellet condensers.
The possible behaviors of droplet in the condensate include spreading, droplet formation and mixing. Generally put the liquid with smaller surface tension into the liquid with larger surface tension and the surface will spread out, otherwise it is easy to form droplets. Dimethylsilicone oil is the lowest surface energy condensing agent (liquid paraffin 0.035n /m, vegetable oil 0.035n /m, dimethylsilicone oil 0.021n /m) among common water-soluble dripping pellet condensers.
The other there are many kinds of dimethyl silicone oil specifications, can adjust the temperature and choose different models of dimethyl silicone oil, to adjust the droplets in the condensing agent forming and deposition rate, in order to achieve the best technology and quality conditions, and there is no pollution of petrochemical products with toxic substances and water dropping water discoloration mildew hidden trouble, there is no guarantee that this is liquid paraffin and vegetable oil.
Especially with S-40(polyoxyethylene monostearate), Poloxamer as the matrix of dropping pills must use dimethyl silicone oil as condensate, can not use liquid paraffin as condensate, because the dimethyl silicone oil can increase the dissolution of water insoluble active drugs, is conducive to the absorption of drugs; Poloxamer cannot be used as a condensate due to its hygroscopic properties. (Dimethylsilicone oil periodic treatment technology in dropping pill production; Due to the high price of dimethyl silicone oil, it should be recycled as far as possible in production. The used dimethyl silicone oil will be mixed with foreign bodies. One of the most common foreign bodies is the broken pellets produced during the preparation of dropping pellets, which can be removed by filtration, static precipitation or centrifugation. Another common foreign body for water, the use of mixed oil water dimethyl silicone oil as a condensing agent, dropping pills may appear to dissolve, deformation and even can not condense hard, remove the water in dimethyl silicone oil is: the soul of water in the dimethyl silicone oil frozen at -4℃, to be removed after water condensation into ice, quickly filtered, can be removed.
