Mildew-proof and mothproof coating for ancient wooden buildings in humid environments in middle and lower reaches of Yangtze River and preparation method of mildew-proof and mothproof coating

Abstract

The invention provides a mildew-proof and mothproof coating for ancient wooden buildings in humid environments in middle and lower reaches of Yangtze River and a preparation method of the mildew-proof and mothproof coating. The mildew-proof and mothproof coating is composed of two components A and B in the mass ratio of 1: 2; the component A is prepared from the following components in parts by weight: 90-120 parts of acrylate-polyurethane water dispersion, 0.5-1.5 parts of thixotropic agent and 5-20 parts of deionized water; the component B is prepared from the following components in parts by weight: 2-8 parts of propylene glycol methyl ether acetate, 0.5-5 parts of dispersant, 0.2-0.8 part of antifoaming agent, 10-30 parts of deionized water, 10-40 parts of super fine talc powder, 10-40 parts of kaolin, 10-30 parts of iron oxide red, 0.8-1.2 parts of dimethyl methylphosphonate, 10-20 parts of nano-silver oxide mildew-proofing agent and 4-8 parts of vegetable moth-proofing agent; and the invention also discloses a preparation method of the coating. The coating has the functions of waterproofing, fire resistance, mildew resistance and moth resistance, and is green and environment-friendly.

Description

technical field [0001] The invention relates to a coating technology, in particular to an anti-mildew and anti-moth coating for wooden ancient buildings in a humid environment in the middle and lower reaches of the Yangtze River and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] my country is a country with rich traditional culture, among which, ancient wooden buildings are an extremely important part, from which we can see the development of other sciences in the same period and the level they reached at that time, they are the precious historical heritage of the country that cannot be reproduced , It is an important symbol of national civilization and a precious wealth of the nation. Therefore, the work of protecting ancient buildings is particularly important. [0003] At present, there are three problems in the protection of wooden ancient buildings: first, various timber components in ancient buildings have good...

AI Technical Summary

Problems solved by technology

[0003] At present, there are three problems in the protection of wooden ancient buildings: first, various timber components in ancient buildings have good performance of burning and spreading flames, and the roofs of ancient buildings are tight and tight, and the smoke and heat inside the roof are not easy to dissipate in case of fire , the temperature is easy to accumulate, which will quickly lead to "flashover", especially tall ancient buildings; most ancient buildings adopt a group plan layout, with courtyards as the combination unit. The eaves are overlapped and the corridors are connected, so that the fire prevention distance between buildings is insufficient, and there is a lack of safe space, which can easily cause a fire to be uncontrollable. Second, wooden ancient buildings are easy to mold and rot after being soaked by water and water vapor for thousands of years. Therefore, coatings are an important functional building material. Great progress has been made in the development of multifunctional coatings, but the current market There are fewer protective coatings for wooden ancient buildings with fireproof, waterproof, mildewproof and mothproof

[0004] At present, there are many researches on anti-mildew and anti-moth coatings at home and abroad, such as Chinese patent, application number: CN201110049360.7, name of invention: a composite wood anti-corrosion anti-moth technology, which discloses preventive wood surface Combining tar insect repellant, microcapsule antibacterial nanomaterials, and crystalline material fixation technology, the paint solves the problems of environmental pollution and harm caused by wood anti-corrosion and insect-proof technology, insufficient efficiency of anti-corrosion and insect-proof, and limitations of construction methods; Such as Chinese patent, application number: CN93112439.5, invention name: fumigation anti-mildew and anti-moth coating and its application, which is designed to be suitable for coating on the surface of wrapping paper, film, finished bag and various cards to make anti-mold Anti-moth card, anti-mildew and anti-moth bag, paper, film coating; another example is Chinese patent, application number: CN201110413043.9, title of invention: a moisture-proof and anti-mold coating and its preparation method, relating to the decoration of building walls In the field of protection and protection, the protection of building walls in humid environments, the protection of walls in nutrient-rich environments, etc.; another example is the Chinese patent, application number: CN201410029270.5, and the name of the invention: a mildew-proof, moth-proof and bactericidal coating The purpose of the invention and its preparation method is to solve the problems that the anti-mildew coating used for life jackets has a single function, has no anti-moth and sterilizing functions, and has no coating for preventing life jackets from becoming moldy

[0005] However, in the above-mentioned current technology, there is no protective coating for wooden ancient buildings that has fireproof and waterproof functions, and has anti-mildew and anti-moth protection coatings for wooden ancient buildings, especially for wooden ancient buildings in the humid environment in the middle and lower reaches of the Yangtze River. There is no anti-mildew and anti-moth paint for buildings on the market