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What are the Functions and Characteristics of Glue Defoamers

Nov 3, 2020

The oil-based glue defoamer is made of ether, fatty alcohol and multiple active additives through a special process. It is easy to disperse in water-based system, has strong self-emulsification, good defoaming, long-lasting foam suppression, and has special effects on water-soluble polymers and medium and low viscosity systems. It is especially suitable for latex-type water such as styrene-acrylic, ethylene-propylene, pure acrylic, vinyl acetate emulsion, and carboxylated styrene butadiene. It has the characteristics of good defoaming, good foam suppression, good leveling, low dosage, no floating oil, no fish eye holes, and does not affect the appearance of the product and the coating performance. 1. It has strong defoaming and anti-foaming power, with low dosage, and does not affect the basic properties of the foaming system. 2. Good heat resistance, chemical stability, no corrosion, no toxicity, no adverse side effects, no combustion, no explosion. 3. Its performance is comparable to imported products, and the price is more obvious.

Application of oil-based glue defoamer: oil-based glue defoamer is used in synthetic latex, yamonia gum, natural latex, natural rubber, synthetic fiber, synthetic resin emulsion, synthetic rubber defoaming and degassing, water-based printing glue and coating Defoamer for layer glue, water-based high-viscosity glue, etc.

Whether the coating is dried and formed into a smooth film is the standard for evaluating the leveling performance of the coating. Smooth and smooth coating film indicates excellent leveling. On the contrary, a leveling agent is needed to improve poor leveling.

This is especially true for water-based paints. In fact, the rapid development of water-based coatings symbolizes people's progress. After all, people in the past only paid attention to development and did not pay much attention to health. However, water-based coatings use water as a solvent or medium, and the nature of water causes many defects in water-based coatings.

Poor leveling is one of them. Brush marks, orange peel, roll marks, sagging, shrinkage holes, pinholes, etc. are all signs of poor paint leveling, which brings many adverse effects:
1. Decreased covering efficiency will increase costs
2. Destroy the aesthetics of appearance
3. Weaken the protective effect of the coating on the substrate
4. Not conducive to drying and film formation

There are many factors influencing the leveling of coatings. Surface tension, shearing force, viscosity changes, solvents, etc. all affect the paint film to varying degrees, and at the same time affect each other. The leveling agent is added to achieve a good leveling effect by influencing the balance of various factors in different stages. However, different types of leveling agents have different mechanisms of action and different effects. Therefore, when choosing leveling agents, the problems to be solved and the structural categories of additives should be considered comprehensively.

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