Organosilicone defoamer and preparation method thereof

Abstract

The invention discloses an organosilicone defoamer and a preparation method of the organosilicone deformer. The defoamer is prepared from the following raw materials in percentage by weight: 10-40% of simethicone (201), 10-25% of high-boiling silicone oil, 1-5% of a thickener, 40-60% of water, 5-25% of an emulgator, and 1-5% of fumed silica, wherein all of the raw materials account for 100%. The preparation process comprises the following steps: (a) weighing the simethicone (201) and the fumed silica in different weight ratios and adding into a reaction kettle, raising the temperature to about 150 DEG C, and stirring for 5-8 hours to prepare a silicon cream; (b) adding the high-boiling silicone oil and the emulgator into the prepared silicon cream, heating to about 40 DEG C, stirring for 30 minutes, then adding the thickener and the deionized water, continuing to stir for 2-4 hours, cooling, discharging, and packaging. The organosilicone defoamer provided by the invention provides a reasonable way to treat byproduct high-boiling residues of the organosilicone, improves the stability and the dispersity of the emulsion, guarantees the storage time, and greatly improves the defoaming capability, and the using temperature range of the materials is relatively wide.

Description

technical field [0001] The invention relates to a silicone defoamer and a preparation method thereof Background technique [0002] In the production process of many industries (such as printing and dyeing, fermentation, papermaking, paint, medicine, oil field exploitation, water treatment, etc.), a large amount of foam is often generated due to operations such as stirring, vibration, boiling or adding easy-to-foaming additives. Properly suppressed, foam will bring a lot of troubles to production, such as affecting the normal production, reducing the effective load of equipment, causing product quality and production capacity to decline, etc. In order to eliminate and suppress foam, the most effective and economical method is to add defoamer. Silicone defoamers are widely used because of their strong defoaming ability, good thermal stability, physiological and chemical inertness, non-toxic and harmless, and no secondary pollution. Using methyl silicone oil, high boiling sil...

AI Technical Summary

Problems solved by technology

[0002] In the production process of many industries (such as printing and dyeing, fermentation, papermaking, paint, medicine, oil field exploitation, water treatment, etc.), a large amount of foam is often generated due to operations such as stirring, vibration, boiling or adding easy-to-foaming additives. Properly suppressed, foam will bring a lot of troubles to production, such as affecting the normal production, reducing the effective load of equipment, causing product quality and production capacity to decline, etc.