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Dry powder paint for construction as well as preparation method and use method thereof

A technology of dry powder coatings and construction, applied in the direction of powder coatings, coatings, etc., can solve the problems of single product and less high-performance dry powder coatings, and achieve the effect of large construction area, high hiding power and convenient transportation

Inactive Publication Date: 2011-07-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still very few studies on the use of latex powder to prepare high-performance dry powder coatings that can be thinly coated with properties equivalent to those of traditional latex coatings.
[0009] In short, judging from the actual situation at home and abroad, the architectural dry powder coating products on the market are relatively single, and there are many homogeneous products, which often require thick film coating, and are mainly used in the field of temporary construction projects and other areas that do not require high coating performance. occasion
The preparation method of real zero-VOC architectural dry powder coatings with properties equivalent to traditional latex coatings, color-tunable and thin coating, has not been reported at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]In a newly-built residential area, in order to move in immediately after completion, the head of the household requires that there will be no peculiar smell similar to that released by traditional latex paint in the room, so the product of the present invention is used for interior wall finishing. The formula is (the total weight is based on 100 kg): 30 kg of redispersible ethylene-vinyl acetate copolymer (EVA) binary copolymer latex powder, 40 kg of titanium dioxide, 10 kg of calcium carbonate, 8.1 kg of calcined kaolin, talcum powder 10 kg, 0.5 kg of methyl cellulose ether, 0.2 kg of solid defoamer, 0.8 kg of solid dispersant, 0.3 kg of solid thixotropic agent, and 0.1 kg of iron oxide red. When mixing, first pour clean water into the mixer, the amount is 2.5 times of the dry powder coating, stir for 15 minutes, then let it stand for 12 minutes, and then stir for 3 minutes before use. The dry powder coating after watering is applied on the putty-primed and leveled wall...

Embodiment 2

[0057] The old wall inside the meeting room of a company was redecorated. The formula is (the total weight is based on 100 kg): 15 kg of redispersible vinyl acetate / ethylene / vinyl tert-carbonate terpolymer latex powder, 33 kg of titanium dioxide, 38 kg of calcium carbonate, 8 kg of talcum powder, methyl 0.1 kg of cellulose ether, 0.3 kg of solid defoamer, 0.4 kg of solid dispersant, and 0.2 kg of solid thixotropic agent. When mixing, first pour clean water into the blender, the amount is 3 times that of the dry powder coating, stir for 15 minutes, then stand for 10 minutes, and then stir for 2 minutes before use. Due to the fact that it has not been decorated for many years, the walls have accumulated a lot of dust, and some walls have fallen off. Firstly, the old wall was cleaned, the dust was removed, the floating layer and the alkali layer were removed, and then the wall was repaired with putty. Start to scrape putty on the 5th day after mending, polish smooth with sandpa...

Embodiment 3

[0059] The sales hall of a newly-built real estate is decorated with this dry powder coating in order to establish a high-end and environmentally friendly shopping mall concept and deliver it for use as soon as possible. The formula is (total weight in 100 kg): 50 kg of redispersible styrene-acrylate copolymer latex powder, 28.3 kg of calcium carbonate, 10 kg of calcined kaolin, 0.3 kg of methyl cellulose ether, and 0.6 kg of solid defoamer , 0.2 kg of solid dispersant, 0.6 kg of solid thixotropic agent, and 10 kg of iron oxide red. When mixing, first pour clean water into the blender, the amount is twice that of dry powder coating, stir for 15 minutes, then let it stand for 10 minutes, and then stir for 2 minutes before use. The spraying method is used for construction. After painting, the wall is flat, smooth and colorful, odorless and pollution-free. It will start business the next day after the decoration is completed.

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Abstract

The invention relates to dry powder paint for construction, which is prepared from polymer latex powder, titanium pigment, calcium carbonate, calcined kaolin, talcum powder, cellulose ether, a solid defoaming agent, a solid dispersing agent, a solid thixotropic agent and coloring pigment. The preparation method of the dry powder paint comprises the following steps: putting the components of the dry powder paint into a dry powder mixer for mixing for 20-40min, and then, removing bigger particles by using a vibratory screen with 120 meshes. The use method of the dry powder paint comprises the following steps: carrying out surface pretreatment on a wall body; pouring the dry powder paint into clear water and stirring and mixing evenly, standing, and then stirring again; and applying the obtained liquid paint by adopting a roller painting, spray painting or brush painting mode. The formed paint film has the characteristics of good water resistance, alkali resistance, weather resistance, washing resistance, dirt resistance and the like, has the performances of the traditional latex paint and does not contain components of VOC (zero VOC), heavy metals and the like harmful to the environment and the human health.

Description

technical field [0001] The invention relates to the technical field of architectural coatings, in particular to an environment-friendly architectural dry powder coating, its preparation method and application method. Background technique [0002] The paint industry has become an important part of a country's national economy, and the paint output and per capita output have become one of the important symbols for measuring the economic level of countries in the contemporary world. However, the paint industry itself has the characteristics of polluting the environment. This has aroused great concern of the whole society. Therefore, vigorously developing environment-friendly coatings is the general trend of the development of coatings in the world. At present, many design activities of resins and coatings are centered on reducing volatile organic compounds (Volatile Organic Compound, abbreviated as VOC), and environmental factors have become one of the main driving forces for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/08C09D131/04C09D125/14C09D5/03
Inventor 夏正斌张心亚司徒粤陈焕钦梅慈云
Owner SOUTH CHINA UNIV OF TECH
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