With the rapid growth of China's coatings market, water-based coatings have gradually gained a significant share. However, according to Xiao Bian from China Paint Purchasing Network, many consumers still lack a clear understanding of water-based paints and remain uncertain about choosing between them and solvent-based options. Here are some key advantages of water-based coatings over their solvent-based counterparts:
1. Waterborne coatings, especially electrophoretic ones, produce a uniform and smooth film with excellent leveling properties. They can coat hard-to-reach areas like cavities, seams, and edges effectively, offering superior protection. Cathodic electrophoretic coatings, in particular, exhibit exceptional corrosion resistance, with salt spray resistance reaching up to 1200 hours.
2. Water-based paints use water as the primary solvent, significantly conserving resources. They eliminate fire hazards during application, reduce air pollution, and only require a small amount of low-toxicity alcohol ether solvents, improving the working environment. Typically, water-based coatings contain 10–15% organic solvents, while modern cathodic electrophoretic coatings have reduced this to below 1.2%, making them much more environmentally friendly and resource-efficient.
3. The tools used for applying water-based paints can be cleaned easily with water, reducing the need for costly cleaning solvents.
4. Water-based paints can be applied directly on wet or humid surfaces and show strong adhesion to various materials, making them highly adaptable.
Despite these benefits, water-based paints also come with challenges. They require higher cleanliness during application and on the material surface, as water’s high surface tension can lead to coating shrinkage if not properly managed. Additionally, they tend to be more expensive than oil-based paints and may not offer the same aesthetic finish. While oil-based paints are less eco-friendly, they are often easier to work with in certain conditions. Therefore, it’s important for consumers to evaluate their specific needs and make an informed, rational choice when selecting between the two types of coatings.
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