Common paints and solutions

Abstract: 本文介绍了常见油漆施工中的四种缺陷及其解决方案：雾化、砂痕、粉化和变色。雾化由低温喷涂引起，需调整温度；砂痕因打磨不当或使用粗糙磨料导致，需正确准备表面后重新涂装；粉化是天气侵蚀的结果，需清除粉末并涂底漆；变色则因阳光、污染或湿度造成，需去除缺陷后重新涂装。文章还提供了避免缺陷的建议，包括选择合适的油漆、做好表面清洁与打磨、遵循正确的涂装方法以及定期检查和维护涂层状态。

Causes and solutions of paint defects

Common defects in paint application include fogging, sand marks, chalking, and discoloration. Atomization is caused by low-temperature spraying and can be avoided by adjusting the temperature; Sand marks are caused by improper sanding or the use of rough abrasives, and the surface needs to be prepared correctly and then repainted; Chalking is caused by weather erosion, the powder should be removed and primed; Discoloration is caused by sunlight or pollution, and it is necessary to remove the defect and repaint.

Common paint defects and solutions with Figure 1

The name of the defect	cause	Resolution
Fogging	The temperature is too low when spraying	Ensure that the temperature of the work area is suitable and avoid construction in low temperature conditions.
Sand Scratches	Rough abrasives were used or sanded incorrectly	Prepare the surface correctly according to the manufacturer's recommendations, sand with a guide coating, and then recoat.
Chalking	Weather erosion causes paint to wear out	Use a stiff bristle brush to remove the powder and apply a layer of primer.
Discoloration	Sunlight, air pollution, or humidity cause color changes	Repaint after removing defects.

How to avoid paint defects

In order to avoid paint defects, it is first necessary to choose the right paint according to the construction environment and material characteristics. Second, make sure that the surface is clean and free of impurities, and that the surface is properly prepared according to the manufacturer's recommendations. In the painting process, the technical data sheet (TDS) is strictly followed, and the drying time and tools are reasonably calculated. Finally, regular inspection of the coating status and timely maintenance can effectively extend the life of the coating and avoid problems.

Ways to avoid it	description
Choose the right paint	Choose the right paint based on the type of surface and environmental conditions, taking into account weather resistance and color durability.
Prepare the surface	Clean and ensure the surface is free of dirt and impurities to enhance adhesion and prevent shedding.
The right way to paint	Follow the manufacturer's Technical Data Sheet (TDS), calculate the drying time correctly, and apply with the appropriate tools and environment.
Regular inspection and maintenance	All paint projects are regularly monitored, tested, and maintained to ensure long-term coating performance.