When there is foam in your production industry, do you know the ingredients of the defoamer that should be used, but there is a type of defoamer that is recommended and applied by many industries that is silicone defoamer, which is actually more The biggest reason is related to its formula, and the effect is determined by the ingredients and application method.
The refining procedure of silicone defoamer is firstly to synthesize thermal conductive silicone grease (silicone paste) with simethicone oil and SiO2, and then use Span-Tween compounded emulsifier to emulsify the silicone grease with the help of stirring equipment, so that the organic The properties of the whole system of silicon defoamer will be more stable. The amount of such emulsifiers and SiO₂ added will directly affect the HLB value of the system, and then the organic polymer is assisted by silicon hydrogen. The addition of a special formula makes the defoaming performance of the silicone defoamer reach the highest point. , the dispersion speed is fast when defoaming, insoluble in the bubbles, it will quickly diffuse on the surface of the bubble film to prevent the film from thickening, thus breaking the stability of the film, and the composition is also harmless, so it is used in most industries Production foaming process.
How to use silicone defoamer
1. Directly added. After the silicone defoamer is made into a finished product, it will have excellently dispersed uniform particles. Therefore, it can be added dropwise in an appropriate amount during the production of the product, and it can be well mixed with the molecules in the product to break the foam.
2. Add after diluting. If the shear force added during production is not good, which will affect the distribution of foam breaking particles, then it is necessary to dilute with 100% pure active substances before use, which will reduce the occurrence of shrinkage cavities, silicon spots, and disappearance of products. Bad bubbles and other problems.
