Dry powder latex paint for inner wall and preparation thereof

A dry powder latex and coating technology, applied in latex paint, coating and other directions, can solve the problems of many products, single product, coating film performance can not be compared with latex coatings, etc., to achieve large construction area, high covering power, easy to transport and long-term preservation

Inactive Publication Date: 2009-07-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these dry powder coatings have not been popularized. The main reason is that most of the construction methods require thick film coating, and the coating film performance cannot be compared with latex coatings.
[0005] At present, judging from the actual situation at home and abroad, the dry powder coatings on the market require thick film coating, the products are relatively single, and there are many homogeneous products, and they are mainly used in the field of temporary construction projects and other occasions that do not require high coating performance.
The preparation method of the real zero-VOC interior wall dry powder latex paint with performance equivalent to that of traditional interior wall latex paint, adjustable color 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

[0049] The interior wall of an old elementary school classroom in a rural area is being painted. The formula is (total weight in 100 kg): 10 kg of redispersible polymer latex powder, 37.8 kg of titanium dioxide, 40 kg of heavy calcium carbonate, 5 kg of calcined kaolin, 6 kg of talc, and 0.4 kg of methyl cellulose ether , 0.6 kg of solid defoamer, 0.2 kg of multifunctional additives. When mixing, first pour clear water into the blender, the amount is 3 times that of the dry powder latex paint, 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 scraping putty on the 5th day after mending, smooth with sandpaper after initial drying, begin to brush d...

Embodiment 2

[0051] In a newly-built villa area, in order to move in immediately after completion and eliminate the adverse effects of general coatings on the human body, the product of the present invention is used for interior wall coating. The formula is (total weight in 100 kg): 30 kg of redispersible acrylate polymer latex powder, 40 kg of titanium dioxide, 10 kg of heavy calcium carbonate, 9.1 kg of calcined kaolin, 10 kg of talc, methyl cellulose ether 0.5 kg, 0.2 kg of solid defoamer, 0.1 kg of multifunctional auxiliary agent, and 0.1 kg of iron oxide red. When mixing, first pour clean water into the blender, the amount is 2.5 times of the dry powder latex paint, stir for 15 minutes, then let it stand for 12 minutes, and then stir for 3 minutes before use.

[0052] The dry powder latex paint after watering is applied on the putty-primed and leveled wall surface by roller coating. Before roller coating, check the smoothness and adhesion of the putty plaster, and repair the problema...

Embodiment 3

[0054] In a shopping mall, in order to improve the interior image of the mall, it is necessary to renovate the original wall decorated with mosaics. The original plan was to eradicate the old mosaics and redecorate with new mosaics. Because the dry powder latex paint has rich colors, its construction is easy, odorless, pollution-free, and does not affect the business of the store, so the plan adopts the product of the present invention to decorate instead. The formula is (the total weight is based on 100 kg): 40 kg of redispersible polymer latex powder, 10 kg of titanium dioxide, 13.5 kg of heavy calcium carbonate, 20 kg of calcined kaolin, 5 kg of talcum powder, and 0.1 kg of methyl cellulose ether , 0.4 kg of solid defoamer, 1.0 kg of multifunctional additives, and 10 kg of iron oxide yellow. When mixing, first pour clear water into the blender, the amount is twice that of the dry powder latex paint, stir for 15 minutes, then stand for 10 minutes, and then stir for 2 minute...

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PUM

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Abstract

The invention relates to an environment-friendly inner wall dry powder latex coating and a preparation method thereof. The compositions according to weight percentages are as follows: 10-40% of re-dispersible polymer latex powder, 10-40% of titanium dioxide, 10-40% of ground calcium carbonate, 5-20% of calcined kaolin, 5-10% of talcum powder, 0.1-0.5% of cellulose ether, 0.2-0.6% of solid defoamer, 0.2-1.0% of multifunctional auxiliary agent, and 0.01-10% of tinting pigment. The inner wall dry powder latex coating formed in the invention can have scumble construction after thinning by being added with two to three times of water, and the thickness of dry film is 20 microns to 200 microns; the color is tunable; the storage is stable, and the transportation is convenient; the VOC thereof cannot be detected (real zero VOC), and the coating film performances meet the technical requirements of national standard of inner wall latex coating; and the combination properties of products can reach international most advanced level of similar products.

Description

technical field [0001] The invention relates to the preparation of architectural coatings, more specifically, to an environment-friendly interior wall dry powder latex coating and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the enhancement of environmental protection awareness, the consumption of water-based coatings has increased significantly. Especially in the field of construction, water-based coatings (mainly latex coatings) have occupied more than 80% of the architectural coatings market. [0003] However, the harm of volatile organic compounds (Volatile Organic Compound, abbreviated as VOC) in architectural latex paints to human body and environment is still an urgent problem to be solved. Five years ago, my country's national standard stipulated that VOC in architectural latex coatings was 250 grams per liter of paint (about 1600 grams), and now the regulation is VOC ≦ 100 grams per liter of paint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/00C09D5/02C09D7/12C09D133/02C09D133/08C09D133/10C09D123/08C09D131/04C09D133/04C09D123/28
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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