NanHui water-based glue defoamer solution

Customer question

Water-based glue is widely used in construction, automobile, shoemaking, daily necessities and other fields. As the demand of the packaging industry continues to grow, it is driving the development of the water-based adhesive industry. At the same time, the industrial market has higher and higher quality requirements for water-based adhesives. The production process of water-based adhesives is more complicated. Many manufacturers often encounter the problem of foaming of water-based adhesives during the production process. The quality of water-based adhesive products even caused the loss of some customers.

(Picture: Water-based glue)

1. Customer information: Croda Water-based Glue Company mainly produces water-based glues and water-based adhesives. The water-based glue used is mainly used for leather coating, which produces foam during high-speed mixing.

2. Sample information: water-based glue

Customer request

1. The defoaming agent must be water soluble, have a long foam suppression time, and have a strong defoaming force.

2. It does not affect the use and the quality of glue.

(Picture: Nanhui water-based glue defoamer sample)

Solution

1. Analysis of the cause of blistering:

(1) Since a variety of surfactants are added to the water-based adhesive raw materials, the surfactants change the surface tension of the water-based adhesive, and the surfactants are likely to cause foam.

(2) The use of various high-speed mixers in the production process of water-based adhesives and the occurrence of turbulence, splashing, impact, air pockets, etc. in the water-based adhesive will increase the free energy of the coating system to varying degrees. Causes foam to occur easily, this is the external foam factor.

(3) In the water-based adhesive industry, the foam problem of water-based latex coatings is more serious. This is due to its special formula and special production process, as well as the addition of emulsifiers, which leads to a decrease in the surface tension of the emulsion system. Is the main cause of bubbles. The pigment wetting agent and pigment dispersant in the latex paint reduce the surface tension of the system and promote the generation and stability of the foam, making the foam stable and difficult to eliminate.

(4) Extraction of free monomers in the production of emulsions, high-speed dispersion and stirring of latex paint, and brushing and spraying during construction may also produce foam.

(Picture: Water-based adhesive applied on the tape)

2. The hazards of blistering

(1) Due to the foam problem of the latex liquid, it may cause difficulties in the production operation. The air of the foam hinders the dispersion of pigments or fillers, and also causes insufficient equipment utilization and affects quality.

(2) When the finished product is filled into cans, more filling times are required due to foam.

(3) The use of paint film during construction leaves blisters and causes uneven surface, which affects the appearance and the service life of paint film.

3. Nanhui targeted experimental solutions

4. Recommended defoamer

Nanhui defoamer for water-based adhesives is widely used in the manufacturing process of all kinds of adhesives. It can be used in a wide range of pH and temperature. It has strong anti-foaming ability, long-term foam suppression, no pinholes, and no influence on product firmness. In all kinds of emulsions, it has strong ability to eliminate fine foam, fast foam breaking speed, long foam suppression without rebound, can eliminate all kinds of foam and help improve product quality.

5. Water-based adhesive defoamer characteristics

(1) It is composed of modified polysiloxane, white carbon black, dispersant and stabilizer;

(2) It can maintain a good anti-foaming effect at a lower concentration;

(3) It can be used under different temperature and acid-base conditions;

(4) Easy to disperse in water and fast defoamer;

(5) Good compatibility with foaming medium;

(6) Prevent the growth of microorganisms.

Nanhui is a manufacturer with years of application experience. It has far more defoaming technology than other antifoaming agents in the market. From the above cases, we prove the strength of our Nanhui defoamer. We have a group of excellent defoaming engineers, and an independent laboratory that facilitates defoaming experiments with foams that are difficult for customers to solve. If you want to know more about defoamer products, you can call our hotline: +86 13428601010.

This article is from the manufacturer of Nanhui defoamer (http://www.nhdefoamer.com/), please indicate the source if you need to reprint.