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Preparation method of water-based paint from kaolin filler

A technology of water-based paint and kaolin, applied in the direction of coating, etc., can solve the problems of poor decoration and easy cracking, and achieve the effects of overcoming easy cracking, improving early water resistance, and improving film-forming performance

Active Publication Date: 2014-01-08
广东科进应用技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to provide a preparation method for preparing water-based paint by using kaolin filler. The Si-O-Si polymer network structure that can be formed during the process can greatly improve the early water resistance of the coating film, the final hardness, scratch resistance and stain resistance of the coating film; adding organic polymer emulsion can improve the coating Film-forming performance overcomes the shortcomings of traditional two-component water-based coatings such as easy cracking, poor decoration, and poor storage stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of superfine high-activity kaolin for coating described in present embodiment 1, its preparation steps are:

[0021] A kind of preparation method utilizing kaolin filler to prepare water-based paint, comprises the following steps:

[0022] (1) Take 800g of kaolin rock ore from the coal mine, crush it with a crusher to form a 20mm diameter crushed stone, and then remove the iron oxide and magnesium oxide minerals from the crushed stone through magnetic separation equipment to obtain 200 mesh kaolin raw materials;

[0023] (2) Dissolve 200g of hexanediol in 500ml of deionized water, and stir for 1 hour to form a hexanediol solution; take 500g of 200-mesh kaolin powder and add it to the hexanediol solution, add 50g of dispersant anionic polyfunctional polymerization Alcohol amine salt solution, sodium carboxymethyl cellulose, sodium hexametaphosphate, and then stirred and reacted at 80 ℃ for 2.5h at a speed of 500r / min, dispersed evenly to obta...

Embodiment 2

[0029] A kind of preparation method utilizing kaolin filler to prepare water-based paint of this embodiment 2, its steps are:

[0030] (1) Take 800g of kaolin rock ore from the coal mine, crush it with a crusher to form a 20mm diameter crushed stone, and then remove the iron oxide and magnesium oxide minerals from the crushed stone through magnetic separation equipment to obtain 200 mesh kaolin raw materials;

[0031] (2) Dissolve 200g of hexanediol in 500ml of deionized water, and stir it electrically for 1.5h to form a hexanediol solution; take 500g of 200 mesh kaolin powder and add it to the hexanediol solution, add 50g of dispersant anionic multifunctional The mixture of polymer alcohol amine salt solution and sodium carboxymethyl cellulose is then stirred and reacted at 60°C for 1 hour at a speed of 450r / min, and dispersed evenly to obtain a mixed solution; after the mixed solution is stirred, it is separated by centrifugal sedimentation to obtain kaolin fine material;

...

Embodiment 3

[0037]A kind of preparation method that utilizes kaolin filler to prepare water-based paint of this embodiment 3, its steps are:

[0038] (1) Take 800g of kaolin rock ore from the coal mine, crush it with a crusher to form a 20mm diameter crushed stone, and then remove the iron oxide and magnesium oxide minerals from the crushed stone through magnetic separation equipment to obtain 200 mesh kaolin raw materials;

[0039] (2) Dissolve 200g of hexanediol in 500ml of deionized water, and stir for 1 hour to form a hexanediol solution; take 500g of 200 mesh kaolin powder and add it to the hexanediol solution, add 50g of sodium hexametaphosphate, and then Stir and react at 90°C for 3 hours, with a rotation speed of 750r / min, and disperse evenly to obtain a mixed solution; after the mixed solution is stirred, it is separated by centrifugal sedimentation to obtain kaolin fine material;

[0040] (3) Mix 100ml tetraethyl orthosilicate with 300ml absolute ethanol and 50ml hydrochloric ac...

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Abstract

The invention discloses a preparation method of water-based paint from kaolin filler. The preparation method is characterized in that alkali metal silicate and small-particle-size silica sol are compounded into an Si-O-Si polymer mesh structure during the film forming process, early water resistance of paint film is improved greatly, and final hardness, scratch resistance and stain resistance in the paint film are improved greatly; organic polymer emulsion is added, film forming property of the paint can be improved, and the defects in the traditional two-component water-based paint such as proneness to cracking, poor decorativeness and poor storage stability are overcome. The paint made by the preparation method has the functions such as environment protection, toxicity resisting, heat insulating, high wash resistance, wear resistance, yellowing resistance, aging resistance, stain resistance, good breathability and acoustic insulation.

Description

technical field [0001] The invention relates to a method for preparing water-based paint by using kaolin filler, in particular to a method for preparing water-based paint capable of improving the functions of the water-based paint such as weather resistance and salt spray resistance. Background technique [0002] For a long time, oil-based paint has occupied an important market in China, and its harmfulness has also been paid attention to in recent years. The solvents used in solvent-based coatings contain harmful substances such as benzene, toluene, and xylene, which seriously damage human health. It is understood that at present, countries are gradually restricting the use of solvent-based coatings (paints), and China is joining the ranks. Water-based coatings have created excellent development space for water-based coatings due to their environmental protection, external climate, consumption habits and other factors. In addition, consumers are increasingly paying more at...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D1/00
Inventor 尹荔松黄韶葵
Owner 广东科进应用技术研究有限公司
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