What causes paint to become sticky on cold days? Two-component paint and temperature.
When the temperature drops, the curing reaction of two-component paints slows down, leaving a sticky residue. This explains the difference between curing issues that occur during winter's room temperature drying and those in baked coatings.
The parts painted on a cold day are still sticky the next day. Are you shipping them with the same drying time as in summer? 【First, please check here】 □ Using a two-component paint and drying it at room temperature → When the temperature is low, the reaction between the base and hardener slows down. □ Parts painted in the evening are stickier → The cooling at night prevents proper drying. □ Adding too much hardener → The mixing ratio becomes unbalanced, making it harder to cure. 【Why does this happen?】 Many two-component paints specify to avoid painting at temperatures below 5 degrees Celsius. Drying at room temperature is influenced by the seasonal temperatures. 【Measures you can take starting today】 1. Check the specifications of the paint for the minimum temperature and drying time. 2. In winter, extend the drying time or use heat to dry. 3. Consider using powder coating, which is less affected by temperature. 【Free Materials】 The details of powder coating services are summarized in the related catalog "Powder Coating Services." You can download it for free from this page.
basic information
Defect: Poor curing (stickiness). Management items: Temperature during painting, mixing ratio of main agent and hardener, drying time, heated drying. Comparison: Room temperature drying and baked painting.
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Applications/Examples of results
Metal parts, outdoor equipment, and machine covers that undergo room temperature drying two-component painting. Review of drying conditions in winter and consideration of switching to baked painting.
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