HT Fine Chemical Co., Ltd.
NOTICE ! ! !

Recently, we found that insider copied our official website. Our company has sternly condemned it and demanded it to take the official website offline immediately, otherwise relevant legal measures will be taken. We call on everyone to respect intellectual property rights and abide by industry ethics. We are Honghao (HT FINE) chemical Co., Ltd hereby declares that currently we only have factories and offices in China and an oversea branch in Pakistan. There are no offices or branches in other countries. Please beware of being deceived. Any embezzlement of our website links, product description, pictures, and videos is fake. If found, please contact the official website to confirm the authenticity.

textile-auxiliaries-chemicals-manufacturer
The Defoaming Agent

The Defoaming Agent

Time:   Click: 5091

There are many kinds of defoaming agents used in printing and dyeing factories, it can be divided into silicon and non-silicon. And what's the difference between these two defoaming agents?


textile-auxiliaries-communication

The classification and difference of the two kinds of defoaming agents
The non-silicon defoaming agent: it is a single component, such as isooctyl, soap flake, tributyl phosphate, kerosene and polyether. Some ingredients can be compounded to improve the efficacy. The emulsions such as fatty acids, esters of fatty acids, polyethers and mineral oils were emulsified by using emulsifiers such as fatty acids and esters, which were also widely used as defoaming agents.


The silicon defoaming agent: the silicone emulsion defoaming agent can be divided into parts according to the emulsion system and processing methods: 1) the defoaming agent based on silicone oil and food grade emulsifier, which is produced by reverse phase process, and it is called S defoaming agent. 2) the defoaming agent which is produced by reverse phase processing method is called T series defoaming agent, which is based on modified polyether, silicone oil and food grade emulsifier. 3) It is based on polyether modified silicone oil emulsion system, the defoaming agent produced by reverse phase processing method is called X/C series defoaming agent.

With two methyl silicone oil, specific silica as the main defoaming ingredient, with non-ionic surfactant as emulsifier, defoaming mechanism, according to the principle and technology of compound emulsion, two methyl silicone oil and specific silica ratio, emulsifier, thickener, the feeding effect of CIS sequence on the properties of the product were studied to determine the optimum conditions of the compound. The developed defoaming agent has good temperature resistance, froth, bubble resistance and stability, and the equipment and production process are simple.

The materials which are used: dimethyl silicone oil, liquid hydrocarbon oil, polyether modified silicone oil, silica, silica, emulsifiers, specific Span of 60, Tween 60, Span - 8 o, Tween - 80, polyvinyl alcohol, cetyl alcohol, octadecanol, cellulose and sodium alginate and other commercial products.

The manufacturing process of organosilicon emulsion defoaming agent can be divided into 3 steps:

The first step is the preparation of the silicone paste;
The second step is the preparation of the initial emulsion;
The third step is the complex operation.

The thickening agents which are used include polyvinyl alcohol, carboxymethyl cellulose, sodium alginate, hydroxyl cellulose and acrylic polymers. Each has its advantages and disadvantages, and it should be used for different emulsion systems and application environments.

At present, the technical difficulties of the development of silicone emulsion defoaming agent: the development of the rapid bubble and the persistent silicon paste; the design, synthesis and selection of the emulsification system of low-bubble and non-bubble emulsification, especially of modified silicon ether emulsifier; emulsion particle size and stability control; high temperature resistance, strong alkali resistant, easy to disperse emulsion system development, etc.

Related News
  • [ Printing auxiliaries ] Washing out floating color and staining resistance-- Soaping agent

    [ Printing auxiliaries ] Washing out floating color and staining resistance-- Soaping agent

    July 28, 2017With the improvement of dyeing, there are more and more kinds of printing color. Different colors appear in the printing process fabric.How to ensure no string color among kinds of color, not on the w...view
  • Dyeing

    Dyeing

    May 31, 2017Because rayon/nylon filament / modified polyester filament / Lycra do not contain natural impurities, they have better whiteness in itself, so they can be dyed directly without pretreatment.A. dyeing ...view
  • The Effect of Amino Silicone Fluid

    The Effect of Amino Silicone Fluid

    February 5, 2021The development history of amino silicone fluid can be traced back to the 1940s. As early as 1940, people tried to impregnate fabrics with dimethyl-dichlorosilane in order to obtain a certain waterpro...view
  • Development Ideas of Oil Removers--Basic Chapter

    Development Ideas of Oil Removers--Basic Chapter

    July 11, 2019In the spinning engineering of synthetic fibers such as polyester, polypropylene and polyurethane which are polymerized by monomers, spinning oils (commonly known as chemical fiber oils) are needed. T...view
  • How is the Elastic Fabric Weaved Using 4 Fibers Dyed 3 Different Colors

    How is the Elastic Fabric Weaved Using 4 Fibers Dyed 3 Different Colors

    May 26, 2017The dyeing and finishing of 3 color lace elastic fabric?For three color lace elastic fabric with rayon, nylon filament, modified polyester filament and Lycra fiber of four kinds of fibers as material,...view
Pretreatment Auxiliaries
Dyeing Auxiliaries
Hand Feels Finishing Agent
Contact