Water-based shoe paint defoamer: the key to eliminating foam and improving the quality of shoe materials

Water-based shoe paint defoamer: the key to eliminating foam and improving the quality of shoe materials

During the application of water-based shoe paints, the problem of foam often bothers producers and users. These foams not only affect the appearance of the paint, but also may lead to a decline in the performance of the paint, which in turn affects the quality of the shoe material. The appearance of water-based shoe paint defoamer provides an effective solution to this problem.

 1.Reasons for the generation of foam in water-based shoe paint

The reasons for the foam generated by water-based shoe paint are manifold. Firstly, water-based paint contains a large number of surfactants, and these substances are easy to reduce the surface tension of the liquid in the construction process of mixing and spraying, thus contributing to the formation of foam. Secondly, the roughness and porosity of the surface of the shoe material and the contact between the paint and the air also create conditions for the generation of foam. In addition, the temperature, humidity and other factors in the construction environment will also play a role in the generation of foam. For example, in a high temperature and high humidity environment, the water in the lacquer evaporates slower and it is easier to form foam.

2.the harm of foam to water-based shoe paint

Foam will bring many adverse effects to water-based shoe paint. In terms of appearance, foam will make the surface of the paint layer appear uneven, pinholes and other defects, which will seriously affect the aesthetics of the shoe material and reduce the market competitiveness of the product. In terms of performance, foam will reduce the adhesion of the paint, making the paint layer easy to peel off, shortening the service life of the shoe material. Moreover, the foam will also affect the drying speed and uniformity of the paint, resulting in a decrease in the hardness, wear resistance and other properties of the paint layer, which can't meet the requirements of the shoe materials in actual use.

3. the role of water-based shoe paint defoamer principle

The main principle of water-based shoe paint defoamer is to reduce the surface tension of the liquid, so that the foam membrane wall becomes thin, thus leading to foam rupture. Defoamer molecules can quickly diffuse to the surface of the foam, replacing the surfactant molecules on the surface of the foam, destabilising the foam. At the same time, defoamers can also reduce the elasticity of the foam, making it easier to break up and dissipate. Some efficient defoamers also have the dual function of foam breaking and foam inhibition, which can quickly eliminate the foam that has been generated, but also prevent the formation of new foam, so as to maintain the stability of the paint in a longer period of time.

4.the characteristics of water-based shoe paint defoamer

High efficiency: it can eliminate the foam in water-based shoe paint quickly and effectively, and even at very low additive amount, it can show excellent defoaming effect and greatly improve the production efficiency.

Good compatibility: It has good compatibility with various components of water-based shoe paint, and will not negatively affect the colour, gloss, adhesion and other properties of the paint, ensuring that the quality of the shoe material is not damaged.

Strong stability: it can maintain stable defoaming performance under different conditions of temperature, humidity and acidity and alkalinity, adapting to various complex construction environments and storage conditions.

Environmental protection: water-based shoe paint defoamer usually adopts environmentally friendly formulations, does not contain harmful volatile organic compounds (VOCs), in line with modern environmental protection requirements, to reduce the hazards to the operator's health and the environment.

5.the use of water-based shoe paint defoamer

In the use of water-based shoe paint defoamer, generally need to be added according to the formula and construction process for the appropriate paint. Usually in the production process of the paint, the defoamer can be added directly to the paint, stirring evenly. Add the amount of 0.1% - 1% of the total amount of paint, the specific dosage needs to be adjusted according to the actual situation. In the construction process, if you find that the foam problem still exists, you can also add an appropriate amount of defoamer, but be careful to avoid adding too much, so as not to affect the performance of the paint. In addition, in order to ensure that the defoamer can give full play to its role, it is recommended that the defoamer be fully stirred and left to stand after adding, so that the defoamer is evenly dispersed in the paint.

Water-based shoe paint defoamer plays an indispensable role in the shoe coating process. By effectively eliminating foam, it not only improves the construction performance and appearance quality of water-based shoe paint, but also ensures the durability and aesthetics of shoe materials, providing strong support for the development of the shoe material industry. In the future, as the shoe material industry continues to improve product quality and environmental protection requirements, water-based shoe paint defoamer will also continue to innovate and develop to better meet the market demand.