Polyether modified organic silicon defoamer and preparation method thereof

Abstract

The invention discloses a polyether modified organic silicon defoamer and a preparation method thereof. The defoamer comprises compounding raw materials in percentage by weight as follows: 5%-40% of polyether modified silicone oil, 10%-40% of dimethyl silicone oil, 5%-30% of white carbon black, 2%-30% of an emulsifying agent, 0.01%-8% of a regulator and 10%-80% of water, and the sum of components is 100%. According to the preparation method of the polyether modified organic silicon defoamer, the polyether modified organic silicon defoamer is prepared by the compounding raw materials in percentage by weight, the technological method is as follows: (a), the polyether modified silicone oil, the white carbon black and the dimethyl silicone oil in different weight ratios are put in a reaction kettle, stirred and heated to the temperature of about 200 DEG C, and a silicon paste is prepared; and (b), the emulsifying agent is added into the silicon paste and heated to the temperature of about 50 DEG C-75 DEG C, the regulator is added, water is dropwise added, the mixture is stirred for 5-10 hours, cooled, discharged and packaged, and the polyether modified organic silicon defoamer is obtained.

Description

technical field [0001] The invention relates to the field of auxiliary agent manufacturing in synthetic fiber processing technology, in particular to a polyether modified silicone defoamer and a preparation method thereof. Background technique [0002] In the production process of polyester and other chemical fibers, the use of chemical fiber oils usually has foam problems. Since the oil agent components are mostly ionic surfactants, which have certain foaming properties, a large amount of foam will be generated when the oil agent is compounded and used, resulting in an increase in the volume of the entire oil agent system, and the oil agent device cannot be produced at full capacity. When the agent emulsion is transported, it is more likely to foam in the oil immersion tank after polyester processing. The foam overflow not only causes waste of resources, but also pollutes the working environment; the foam enters the sewage treatment system, causing adverse effects on microb...

AI Technical Summary

Problems solved by technology

At present, the traditional silicon-containing defoamers have low surface energy, strong hydrophobicity, and poor miscibility with other organic substances. Therefore, in the aqueous application system of chemical fiber oils, there are poor defoaming effects and short foam suppression time. shortcoming

However, most domestic defoamers that can meet the requirements of spinning production are monopolized by foreign products, which are expensive and increase the production cost of enterprises.