Acrylic Coating for Wood Finishing
The meaning of acrylic
paint or coatings
is the paint or coatings that
use acrylic resin as their main ingredient. In coatings
terminology, the acrylic resin
is the resin from the polymer and co-polymer
of esters of
methacrylic and acrylic
acid. The co-polymers of this ester resin with the non-acrylic
monomer such as styrene, butadiene, or vinyl acetate are still named as acrylic
resin. The acrylic resin can be
manufactured conveniently in several physical forms: the acrylic emulsions, the
solvent solution, and the powder pallet. The acrylic resins then can be modified
in the formulation of the final product.
In the finishing industry, the acrylic
resin is usually mixed with other resins to make the specific formula to make coating or paint. The uses of the acrylic resin in the coating
industry are very broad. It is one of the most versatile resins used in the
coating field. The addition of acrylic resin in the coating will increase the stability, good
exterior durability, excellent color retention, resistance to UV light, and
chemical resistance.
There are some types of paint that can
be named as acrylic paint. When it is in the coating form, the "acrylic resin" paints
could have different properties with other coatings, and it might not be able to be mixed with them in the finishing application. When you are going to use the acrylic paint, you have to read carefully how it should be used. Make sure you follow the
technical data sheet and the instructions to get a good result and avoid the problems
In the wood finishing, the acrylic
paint usually refers to the non-yellowing coating (the thinner-based paint), the latex paint, and the water-based paint.
latex paint finish
- Acrylic paint (latex paint).
It is a paint containing suspension
in acrylic
polymer emulsion
mixed with pigment. It is available in many colors and is most commonly used for wall paint
or decorative coatings. The acrylic paint is diluted with water, but it becomes
water-resistant when it dries. This paint is also
available in the other special form to be used for hand paint.
In the wood
finishing, acrylic water-based paint is usually used to make the paint finish or solid color finish.
It can give the thick and strong opaque color. It can also be used to make
some special finish effects, such as wash finish, texture effect, crackle
effect, etc. The use of acrylic paint in the wood finishing usually is combined
with other coatings, such as NC, PU, or acrylic coating.
- Oil acrylic paint.
The oil
acrylic paint is made of acrylic resin solution or powder form, which is mixed
with pigments. It is oil-based paint. This paint is widely used by the artist
painter to do the hand painting. It can produce bright colors and is available in a wide range of colors. It is oil-based, so it takes a long time to dry.
- Acrylic lacquer.
Acrylic
lacquer refers to the non-yellowing lacquer. The acrylic resin in the lacquer
will increase the resistance to the UV light, but the pure acrylic lacquer is rarely
used since it is hard, brittle, and expensive. The dry film resulted will not turn yellow. It is used to make the white finish or light color finish when the
film yellowing is not allowed. The acrylic resin that is mixed with cellulose
acetate butyrate is the most popular non-yellowing lacquer.
non-yellowing PU for white finish
- Acrylic Polyurethane.
Polyurethane
is a polymer that is formed from the urethane polymerization reaction. Urethane is produced from the reaction between the poly isocyanate and the materials that
have a hydroxyl group. When acrylic is used as the hydroxyl group resin, it
is called the acrylic PU. It is the non-yellowing polyurethane coating. It is
used to make the PU finish for the white color or light color for the non-yellowing finish.
- Water-based coatings.
The water-based coating is the emulsion aqueous solution. The water-based coating is
made of acrylic resin, modified acrylic, or one component urethane. The water-based acrylic resin is the acrylic emulsion. It is similar to the latex paint,
but it is clear. It is diluted with water, but when it dries, it will be hard,
strong, and resistant to the water. It is
a non-yellowing film, fast-drying, and has high resistance to chemical,
solvent, and mechanical abuse. The water-based coating is now more popular and widely used to make the environmentally friendly finish.
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