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Silicone defoamers help you resolve foaming issues in polyurethane clearcoats.
Release Date:
2021-03-17
Due to its smooth, full-bodied, glossy, and hard coating, polyurethane varnish is also resistant to abrasion, moisture, and chemical corrosion. It is currently one of the most widely used coatings in the decorative market, favored by many users, and is commonly applied to protect the surfaces of wooden products, furniture, and metal items.
Due to its smooth, full-bodied, glossy, and hard film, polyurethane varnish is wear-resistant and offers excellent moisture resistance as well as chemical corrosion resistance. It is currently one of the most widely used coatings in the decorative market, favored by many users, and is commonly applied to protect the surfaces of wooden products, furniture, and metal items.
To ensure that the performance of polyurethane varnish remains unaffected by foaming during production and application, one can use Silicone defoamer Eliminating bubbles. What causes bubbling in polyurethane varnish? Here, we’ve summarized a few key reasons:
1. The raw materials were not fully dried during production, leaving some residual moisture.
2. During construction, inadequate cleaning of the substrate resulted in bubble formation; additional chemical reactions also gave rise to bubbles.
To address this foaming issue, it is recommended to use a silicone‑based defoamer in polyurethane clearcoats. This defoamer is suitable for foams generated by primers, topcoats, waterborne wood coatings, industrial paints, and waterborne bake finishes. It not only rapidly eliminates large bubbles but also delivers excellent defoaming performance for small bubbles.
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