For the surface coating of outdoor wood products, the mainstream products on the market can be mainly divided into oil-based paint, wood wax oil and water-based paint. These three types of applications have their own advantages, but from the perspective of environmental protection, durability, weather resistance and compatibility, water-based paint is the best choice for the surface coating of outdoor wood components!
First of all, since the national level put forward the blue sky defense war in recent years, the air pollution problem has been vigorously rectified, and environmental protection laws and regulations have become increasingly strict. With the increasing attention to health, the demand for environmentally friendly and safe products is more and more urgent.
The volatile organic compounds (VOCs) in oil-based paints have caused serious and long-term harm, and it is well known that their pungent odor can stimulate the upper respiratory tract or cause chronic erosion of incurable diseases such as leukemia.
What is more important than health?! Therefore, water-based paint and wood wax oil have absolute advantages in this regard.
Secondly, the composition and film-forming mechanism of water-based paint and oil-based paint are different, which determines that water-based paint is more suitable for the painting of outdoor wood.
Due to the difference between water and oleoresin systems and binders, oil-based paints form a film through oxidation and polymerization reactions; water-based paints form a network structure through cross-linking reaction, so the air permeability of water-based paints is better than that of oily paints; On the other hand, water-based is more flexible than oil-based, so that outdoor wood has better tension during thermal expansion and contraction, and is not easy to crack and fall off, thus better protecting wood, increasing durability and weather resistance, and prolonging service life .
Third, water-based paint can adapt to the moisture absorption and water absorption nature of wood, and has stronger permeability.
The nature of wood is to absorb water, and water-based paint just uses water as the medium, and the paint liquid is more likely to penetrate into the interior of the wood with the penetration of water, seal the substrate, and form protection. Therefore, water-based paints are better in terms of gloss and color retention, yellowing resistance and other resistance. Here, as an outdoor product, it is usually recommended that you choose a colored effect, and choose a darker color, because the water-based outdoor color paste can increase the weather resistance, and the dark color can absorb ultraviolet rays. The so-called multi-pronged approach , multiple guarantees.
Finally, water-based paints are just as environmentally friendly as wood wax oils. The raw material of wood wax oil is mainly composed of natural ingredients such as linseed oil and palm wax, vegetable oils and vegetable waxes. However, its protective properties are weakened due to its overly natural ingredients. And wood wax oil is easy to stick to ashes for a long time, making the surface look black and old. To give an inappropriate example, wood wax oil is like sunscreen, it has sunscreen function, but it needs to be reapplied every 2 hours because the skin will absorb it; and water-based paint is like a Sun protection clothing, as long as you put it on, it will take care of you all summer.
To sum up, water-based paint is the best choice for outdoor wood surface coating.