Preparation method of novel mildew-proof environment-friendly coating
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An environmentally friendly coating, a new technology, applied in antifouling/underwater coatings, starch coatings, coatings, etc., can solve the problems of low bond strength, poor adhesion, easy to mold, etc., achieve good results, prevent coatings from mildew, stable effect
Pending Publication Date: 2020-06-12
HEILONGJIANG UNIV
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Problems solved by technology
It can effectively improve the problems of poor adhesion, low bond strength, easy mildew, cracking, peeling and falling off of conventional coatings
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Embodiment 1
[0020] 150 parts of light calcium carbonate, 30 parts of heavy calcium carbonate, 20 parts of gypsum powder, 20 parts of talcum powder, 15 parts of dispersant, 15 parts of lime calcium powder, 10 parts of pregelatinized starch, 3 parts of hydroxypropyl methylcellulose 1 part, 3 parts of acrylic acid copolymer rubber powder, 1 part of hydrophobic agent, 0.5 part of compound antifungal agent, 0.5 part of nano-titanium dioxide, 0.1 part of nano-zinc oxide, prepared according to the above steps.
Embodiment 2
[0022] 120 parts of light calcium carbonate, 35 parts of heavy calcium carbonate, 20 parts of gypsum powder, 25 parts of talcum powder, 15 parts of dispersant, 12 parts of lime calcium powder, 9 parts of pregelatinized starch, 5 parts of hydroxypropyl methylcellulose 1 part, 1 part of acrylic copolymer rubber powder, 2 parts of hydrophobic agent, 1 part of compound antifungal agent, 1 part of nano-titanium dioxide, and 0.2 part of nano-zinc oxide.
Embodiment 3
[0024] 120 parts of light calcium carbonate, 40 parts of heavy calcium carbonate, 25 parts of gypsum powder, 25 parts of talcum powder, 20 parts of dispersant, 12 parts of lime calcium powder, 8 parts of pregelatinized starch, 4 parts of hydroxypropyl methylcellulose 2 parts, 2 parts of acrylic copolymer rubber powder, 2 parts of hydrophobic agent, 0.8 part of compound antifungal agent, 0.8 part of nano-titanium dioxide, and 0.2 part of nano-zinc oxide.
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Abstract
The invention provides a preparation method of a novel mildew-proof environment-friendly coating, and mainly solves the problems that a mildew preventive in a traditional mildew-proof coating is easyto decompose, and organic pollutants such as formaldehyde can be released in the using process. The specific implementation method comprises the following steps: carrying out ultrasonic treatment on the compound mildew preventive and an organic additive in the coating for 30-60 minutes in advance; putting talcum powder, nano titanium dioxide and nano zinc oxide powder into a container according tothe mass ratio of 200: 5: 1, conducting ultrasonic dispersion for 30-60 min, and then mixing and stirring the materials, other filler and additives for 15 min so as to obtain the novel mildew-proof environment-friendly coating. The novel mildew-proof coating has broad-spectrum antibacterial and mildewproof effects and can also play a synergistic photocatalysis role under illumination, generates superoxide ions, hydroxyl radicals and other active substances and can adsorb and kill various bacteria and purify indoor VOCs. The formula and the preparation process similar to those of the novel mildew-proof environment-friendly coating are not found yet by consulting related literatures.
Description
technical field [0001] The invention belongs to the field of architectural chemical coatings, and in particular relates to a preparation method of a novel anti-mildew and environment-friendly coating. It has the advantages of long-term anti-mildew, low cost, safety and environmental protection. Background technique [0002] Putty powder coating is a commonly used building decoration material, usually composed of calcium carbonate, talcum powder, gypsum powder, hydroxymethyl cellulose, glue and other ingredients, and the cellulose and glue in it contain the nutrients needed for microbial growth. Nutrients, once in the appropriate temperature and humidity, are very prone to mold. Mold is widely distributed and has a very strong reproductive ability. It can produce tiny mold spores for airborne transmission. The growth of mold will not only damage the appearance, erode materials, and seriously threaten the service life of building materials, but also produce volatile organic c...
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