Modified waterborne acrylic coating, and preparation method and applications thereof

A technology of water-based acrylic acid and acrylic emulsion, applied in the direction of coating, can solve the problems of poor mechanical properties, limited application, high water absorption, and achieve the effects of improving mechanical properties, reducing water absorption, and improving stability

Inactive Publication Date: 2019-01-11
南阳星港涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional acrylic coatings have the disadvantages of high water absorption and poor mechanical properties, which greatly limit their application in certain fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The present invention also provides the preparation method of the modified water-based acrylic paint described in the above technical scheme, comprising the following steps:

[0030] The above components by weight are mixed to obtain the modified water-based acrylic paint.

[0031] The present invention has no special limitation on the mixing method of the components, and the mixing method well known to those skilled in the art can be adopted, specifically, such as shear dispersion. In the present invention, the rotational speed of the shear dispersion is preferably 11000-13000r / min, more preferably 11500-12500r / min, most preferably 12000r / min. The present invention does not have special limitation to the device of shearing dispersion, adopts the well-known shearing dispersion device of those skilled in the art to get final product, specifically, as high-speed shearing disperser.

[0032] The method for preparing the modified water-based acrylic paint in the present in...

Embodiment 1

[0040] A modified water-based acrylic paint comprises the following components in parts by weight: 390 parts of acrylic emulsion, 210 parts of titanium dioxide, 110 parts of modified silicon dioxide, 4 parts of polysilsesquioxane, 1 part of emulsifier diglycerol poly Propylene glycol ether, 0.3 parts of defoamer BYK-020, 210 parts of deionized water;

[0041] The preparation method of above-mentioned modified waterborne acrylic paint comprises:

[0042] The components of the above-mentioned parts by weight are put into a high-speed shear disperser, and are sheared and dispersed at 11000r / min to obtain a modified water-based acrylic paint.

[0043] Among them, the preparation method of polysilsesquioxane is as follows: in parts by weight: 2 parts of methyltrimethoxysilane and 20 parts of deionized are mixed under the conditions of rotating speed of 400r / min and temperature of 75°C constant temperature water bath 25min; then add 0.5 parts of sodium hydroxide solution with a con...

Embodiment 2

[0052] A modified water-based acrylic paint comprises the following components in parts by weight: 400 parts of modified acrylic emulsion, 220 parts of titanium dioxide, 120 parts of fumed nano silicon dioxide, 5 parts of polysilsesquioxane, 1 part of emulsifier Diglycerol polypropylene glycol ether, 0.8 parts of antifoaming agent polysiloxane, 220 parts of deionized water;

[0053] The preparation method of above-mentioned modified waterborne acrylic paint, comprises the following steps:

[0054] The components of the above-mentioned parts by weight are put into a high-speed shear disperser, and are sheared and dispersed at 12000r / min to obtain a modified water-based acrylic paint.

[0055] Among them, the preparation method of polysilsesquioxane is as follows: in parts by weight: 3 parts of methyltrimethoxysilane and 30 parts of deionized are mixed under the condition that the rotation speed is 450r / min and the temperature is a constant temperature water bath at 80°C 30min;...

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Abstract

The invention provides a modified waterborne acrylic coating, and a preparation method and applications thereof, and belongs to the technical field of coating preparation. The m modified waterborne acrylic coating comprises, by weight, 390 to 410 parts of acrylic acid emulsion, 210 to 230 parts of titanium dioxide powder, 110 to 130 parts of gas phase nanometer silica, 4 to 6 parts of polysilsesquioxane, 1 to 2 parts of an emulsifier, 0.3 to 1.3 parts of an antifoaming agent, and 210 to 230 parts of deionized water. The gas phase nanometer silica uniformly dispersed in the acrylic acid emulsion and polymer molecular chains are subjected to chemical reaction or physical absorption in coating film forming process so as to form crosslinking point structures, intermolecular force is enlarged greatly, coating film mechanical performance is improved greatly, coating film water absorption rate is reduced, and coating storage stability is improved; and adding of polysilsesquioxane powder is capable of improving coating film heat stickyness and cold brittleness, and improving coating film quality.

Description

technical field [0001] The invention relates to the technical field of paint preparation, in particular to a modified water-based acrylic paint and its preparation method and application. Background technique [0002] my country's coatings industry has a long history, and its production and consumption are in the leading position in the world. It has broad development prospects and is gradually becoming a new growth point of the national economy. Paint, formerly known as paint, refers to a substance that can be coated on the surface of an object, firmly combined with the substrate, and form a solid film with a certain strength. It is widely used in various industries such as architectural painting, furniture, vehicles, toys, and ships. Coatings can be divided into water-based coatings, solvent-based coatings, powder coatings and high-solid coatings according to their form. [0003] Solvent-based coatings are currently the most widely used, but solvent-based coatings emit a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D183/04C09D7/61C09D7/65
CPCC08K2003/2241C08K2201/011C08L2205/025C08L2205/03C08L2205/035C09D7/61C09D7/65C09D133/00C08L83/04C08L71/02C08K3/36C08K3/22
Inventor 杨天朝
Owner 南阳星港涂料有限公司
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