Home improvement classroom: experts teach you how to choose latex paint
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Section I: Classification and Characteristics of Latex Paint Guidance: Latex paint is a water-based medium, with an aqueous solution of acrylic esters as the film-forming substance, added with a variety of auxiliary components, and is a wall paint. Species.
Classification: According to the use of the site can be divided into interior wall paint and exterior wall paint, according to the gloss can be divided into low light, semi-gloss, high light and other varieties. Among them, the film-forming material of the interior wall latex paint is insoluble in water, the water resistance of the coating film is high, and no trace is left after the wet scrubbing. The basic performance of exterior latex paint is similar to that of interior latex paint, but the paint film is harder and has stronger water resistance. It can also be used in high humidity areas such as toilets.
Features: (1) The coating film dries quickly. At 25°C, the surface can be dried in 30 minutes and completely dry in 120 minutes.
(2) Good gloss and color retention. The film is hard, smooth and smooth.
(3) Construction and modulation are convenient. It can be applied on the newly constructed wet wall.
(4) It is safe, non-toxic and does not pollute the environment. Construction in poorly ventilated rooms will not cause any harm to workers.
(5) No fire hazard. Because the paint uses water as a medium, there is no danger of fire.
(6) The wall surface is not easy to absorb dust after use.
(7) Good alkali resistance. Apply to the plastered walls, ceilings, and concrete walls that are alkaline, not sticky, and not easy to change color.
Doubt: Can external latex paint be used for interior walls? Conversely?
Answer: The outer wall paint brush inner wall, no problem from the environmental protection point of view, and the inner wall paint brushing the outer wall may not be able to. Because of the high demands on the scrub resistance of the interior wall paint, and the outer wall also has water resistance, the outer wall paint can be used for interior walls. The most important indicator of exterior latex paint is anti-ultraviolet radiation. The interior wall paint is only used for interior wall paints. It is much lower than the exterior wall paints in resisting ultraviolet rays and does not have anti-sun function.
Section II: Guidance for the purchase of latex paint: In general, the purchase of latex paint should be based on their own needs to select the appropriate paint species, do not blindly pursue "advanced" or freeloader, to know the quality of paint is related to living The physical and mental health of the person must choose a product that meets the national standard (GB). In addition, try to buy in specialty stores or large stores.
Buy: (1) Smell: Really environmentally friendly latex paints should be water-based, non-toxic and odorless, so when you smell irritating or industrial flavors, you cannot choose.
(2) Film formation: After a period of time, the surface of genuine latex paint will form a thick, elastic oxide film, which will not easily crack; while defective products will only form a thin film, which is fragile and has a pungent odor. .
(3) Feel: Mix the latex paint with a wooden stick and pick it up with a wooden stick. The high-quality latex paint will become fan-shaped when going down the drain. Touch with your finger, genuine latex paint should feel smooth and delicate.
(4) Scrub-resistant: A few paints can be brushed onto the cement wall. After the coating is dry, it can be scrubbed with a wet rag. The real latex paint is very resistant to scrubbing, and rubbing one or two hundred times does not have a significant effect on the appearance of the coating. The low-grade water-soluble coating only wiped more than ten times, that is, the phenomenon of fading out of the powder, exposed bottom.
Doubt: How to choose latex paint according to the different parts of the brush?
A: According to the different parts of the brush to choose latex paint, such as bedroom and living room walls using latex paint requires strong adhesion, delicate texture, weather resistance and good air permeability. Latex paints for kitchens and bathrooms should be waterproof, mildewproof and washable.