Water-based paint defoamer targeted solutions

Customer question

Water-based coatings are used in all walks of life in our daily lives. If the water-based coatings foam, it will not only affect the quality of the product, but may even hinder the production process. Through the case of water-based paint, Nanhui reveals how to solve the problem of blistering in water-based paint.

(Picture: Use scene of water-based paint)

1. Customer information: Yingye Coatings Co., Ltd., the paint produced by Yingye Co., Ltd. encountered foaming problems and wanted to solve the foaming problem of coatings. I found Nanhui through the Internet and hoped to provide defoaming solutions as soon as possible.

2. Sample information: two samples of water-based paint/defoamer

Customer request

1. The defoaming effect is better.

2. The defoamer added to the water-based paint can not affect the transparency, and there should be no shrinkage.

(Picture: Nanhui water-based paint defoamer sample)

Solution

1. Reasons for blistering of water-based paint

(1) External factors: During paint construction, such as air spraying, airless spraying, curtain coating, etc., turbulence, splashing, impact, air pockets, etc. in the paint will increase the free energy of the paint system to varying degrees. Resulting in foaming easily.

(2) Main factors: When adding emulsifiers to water-based latex coatings, the surface tension of the emulsion system is greatly reduced due to the use of emulsions, and it is easy to foam.

2. The hazards of water-based paint blistering

(1) The air in the foam hinders the dispersion of pigments or fillers;

(2) Insufficient utilization of equipment affects production quality;

(3) Foaming is still at the stirring speed, so that the mixing time is prolonged;

(4) The pigments and fillers cannot be fully wetted;

(5) Dissatisfaction and uneven weight in the continuous filling production line;

(6) There are pits, small holes, etc. on the coating film during use.

(Picture: Application of water-based paint in interior decoration)

3. Analysis of types of defoamers for water-based coatings

(1) Tributyl phosphate is more expensive, has poor foam suppression and cannot be stirred, otherwise it will regenerate foam

(2) Although the price of n-octanol is low, its ability to break and raise bubbles is poor and contains bad gas, which is harmful to human health.

In this regard, Nanhui R&D department recommends CI-210/239/106 type water-based paint defoamer, which can effectively eliminate the foam produced by low-viscosity emulsions and emulsifiable paints, and its characteristics will not produce shrinkage. It has low dosage and defoaming. Fast and versatile.

4. Nanhui's defoaming test plan for water-based coatings

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.