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  • Polyurethane ink defoamer: a key additive to improve the performance of polyurethane ink

    By : Zilibon Chemical
    2025/4/7
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    In the production and application of polyurethane ink, foam problems often plague manufacturers and users. Foam not only affects the appearance of ink, but also may cause defects in the coating and reduce the quality and performance of the coating. Therefore, the application of polyurethane ink defoamer is particularly important.
    In the production process of polyurethane ink, stirring and mixing will cause air to mix into the ink, thus forming foam. During the curing process of polyurethane ink, chemical reactions will occur to produce gases, which will also form foam. Changes in environmental factors such as temperature and humidity may also cause polyurethane ink to produce foam.

    The main working principles of polyurethane ink defoamers are as follows:

    1. Reduce surface tension: Defoamers can reduce the surface tension of ink, thin the liquid film of bubbles, and cause bubbles to burst.

    2. Destroy the stability of bubbles: Defoamers can destroy the surface membrane structure of bubbles, causing bubbles to lose stability and then burst.

    With the continuous development of the polyurethane ink industry and the improvement of ink performance requirements, polyurethane ink defoamers are also constantly innovating and developing. Research and develop defoamers with higher defoaming efficiency and stronger targeting to meet the needs of different polyurethane ink systems and application scenarios.

    In short, polyurethane ink defoamers play an important role in the production and use of polyurethane inks. By rationally selecting and using defoamers, the foam problem of polyurethane inks can be effectively controlled, the performance and quality of inks can be improved, and the sustainable development of the polyurethane ink industry can be promoted.
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