Driers are a class of surfactants that are mainly used to improve the drying rate of inks, varnishes, pigments, waxes and various coatings. It can significantly increase the drying speed of oil-based paints, by reducing the surface moisture difference between wood and metal, speeding up drying, and improving the abrasion resistance, water resistance and gloss of the coating.
First, the effect. The effect of the drier is significant, for oil-based paints, adding driers can speed up the reaction rate constant, thereby increasing the drying speed of the paint;For unsaturated polyester varnishes, adding the right amount of drier can reduce the drying time from a few minutes to a few seconds. At the same time, driers can also improve the appearance and performance of coatings, such as improving abrasion resistance, water resistance, and gloss. In addition, please note that the drier needs to be added in an appropriate amount according to the nature and use of the product, otherwise it may affect the quality of the product or cause environmental pollution.
2. Ingredients. Driers are usually composed of inorganic salts, organic salts, vegetable oils and additives. Among them, inorganic salts mainly include fatty acid salts, plurates, silicates and boratesOrganic salts mainly include ketones, esters and compounds with long carbon chains, etc., fatty acid esters are a commonly used surfactant, which can reduce surface tension, promote the volatilization of solvents and the rapid drying of paint films. Vegetable oil, on the other hand, is a natural dry oil that provides good drying properties when mixed with resins.
3. Attention. 1.Moderate use: Excessive use of drier may cause problems such as brittleness and whitishing of the paint film, so it needs to be used in moderation.
2.Accurate formulation: Accurate measurement of various ingredients is required during preparation to ensure that the formula is in the right proportion.
3.Stir thoroughly: Oil-based paints need to be stirred thoroughly before use to ensure that the drier is evenly dispersed.
Fourth, use. Driers are widely used in coatings, inks, varnishes and other industries, which can shorten the drying time of products and improve production efficiency. In addition, driers can also be used in printing inks, such as rotary printing inks, to improve their drying speed and printability.
With the improvement of environmental awareness, environmentally friendly driers are gradually replacing the traditional high-DU driers, which provides a broad space for the development of the drier industry.