water – in – water coatings characteristic
Water-in-water coatings contain many components, which are prone to mildew under the influence of humidity and temperature increase. Among them, organic polymers such as cellulose (natural macromolecule) and PVA are more susceptible to mold and deterioration, so anti-corrosion is long-term stability of coatings. The necessary work for storage. The addition of antiseptic and bactericide is the main measure, which not only ensures that the coating does not undergo mildew during storage, but also extends the shelf life. In order to control the quality of the paint, it is common to add mold inhibitors in the paint cans and during the construction process to maintain the stability of the paint products. How to choose antiseptics, please refer to the following:
(1) Toxicity. Low-toxic or non-toxic mildew fungicides should be used whenever possible;
(2) Performance. The selected anti-mold fungicide requires a broad spectrum of antimicrobial activity, high efficacy, long-lasting activity, extensive lethal or inhibitory effects on various molds and bacteria, and the use concentration should be as low as possible, from another angle To reduce its toxicity, and preferably also have gas phase sterilization ability;
(3) Effects on the properties of paints and coatings. Adding to the coating does not cause chemical changes with its composition, and does not affect chemical properties after film formation;
(4) Residual effect. Low volatility, good compatibility in coatings, easy to disperse, and insoluble or poorly soluble in water;
(5) pH and temperature. It is stable in storage at pH 6~0, suitable for long-term storage at 40 °C, and can allow processing temperature of (60-70) °C in a short time;
(6) Storage stability. The selected anti-mold fungicide should have the functions of UV resistance, heat resistance and oxidation resistance;
(7) Economic performance. It should be cheap and easy to use, easy to use.
Our company launched 3Q series of coating preservatives, which have more bactericidal effect, broad spectrum, high efficiency and long-lasting. It is especially suitable for anti-corrosion sterilization of various types of latex paints, various water-based paints, water-based pigments, water-based inks and polymer emulsions. A large number of evaluation experiments and practical application of the user prove that it has excellent anti-mildew effect on acrylic acid, polyvinyl acetate, polystyrene butyl ester and other copolymers, and is an ideal anti-mold agent in water-based paints and paint
