Preparation method of polyborosiloxane modified polyurethane waterborne coating

A technology of polyborosiloxane and water-based coatings, which is applied in coatings and other directions, can solve the problems of poor aging resistance and flame retardancy, and achieve the effects of strong adhesion, good fire resistance and improved stability

Active Publication Date: 2019-10-08
广东邦宁新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current polyurethane coatings have poor flame retardancy and poor aging resistance. Those skilled in the art urgently need to develop a new type of polyurethane water-based coating to meet higher use requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020]A preparation method of polyborosiloxane-modified polyurethane water-based coating, characterized in that it comprises the following steps: 1. Take 33 parts of molybdenum disulfide nanosheets and disperse them in 200 parts of sulfuric acid solution under ultrasound, and the mass fraction of sulfuric acid solution is 20 parts ~25%, stirred at 100°C for 2 hours, washed the reaction solid with a large amount of water and dried in vacuum to obtain a treated powder, then, added 0.4 parts of heptadecafluorodecylmethylsiloxane to the treated powder, and ultrasonically dispersed In 125 parts of acetone; 2. Add 0.95 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, N-chlorosuccinimide to the acetone of step 1 0.55 parts, 0.35 parts of monoethanol diisopropanolamine, stirred in an ice bath for 1 hour, then added 120 parts of amino-terminated polydimethylsiloxane, reacted in an ice bath for 12 hours, and then mixed the obtained reactant with acetone and water Af...

Embodiment 2

[0030] A method for preparing a polyborosiloxane-modified polyurethane water-based coating, which is characterized in that it comprises the following steps: 1. Take 25 parts of molybdenum disulfide nanosheets and disperse them in 150 parts of sulfuric acid solution under ultrasound, and the mass fraction of the sulfuric acid solution is 20 parts ~25%, stirring at 80~100°C for 1~2h, washing the reaction solid with a large amount of water and vacuum drying to obtain the treated powder, then, adding 0.2~0.4 parts of heptadecafluorodecylmethylsilane to the obtained powder oxane, and ultrasonically dispersed in 110 parts of acetone; 2. Add 0.55 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, N- 0.45 parts of chlorosuccinimide, 0.22 parts of monoethanol diisopropanolamine, stirred in ice bath for 0.5~1h, then added 115 parts of amino-terminated polydimethylsiloxane, reacted in ice bath for 8h, and then The obtained reactant is repeatedly washed with acetone and...

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PUM

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Abstract

The invention discloses a preparation method of a polyborosiloxane modified polyurethane waterborne coating, and belongs to the technical field of coatings. Waterborne polyurethane is modified by polyborosiloxane, the characteristics of low VOC and environmental protection can be maintained, furthermore, water resistance, heat resistance, mechanical property and the like can be improved; and by the hydrophobic property, the anti-adhesion property of the surface of the coating to stains and bacteria is significantly improved. Moreover, the bactericidal property is further enhanced due to the existence of fluorine and boron in the molecule; and the surface has good hydrophobicity, and pollution loss caused by adhesion of the stains can be prevented. In addition, the coating disclosed by theinvention has the outstanding advantages of good toughness and flame-retardant characteristics, good hydrolysis resistance and heat aging resistance, wear resistance, corrosion resistance and brightness, softness and elasticity, good water resistance and mechanical property, and good weather resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of polyborosiloxane-modified polyurethane water-based coatings. Background technique [0002] Polyurethane is a new organic polymer material, which is widely used in many fields of national economy because of its excellent performance. Polyurethane coatings are currently the most common type of coatings, which can be divided into two-component polyurethane coatings and one-component polyurethane coatings. Two-component polyurethane topcoat paint is generally composed of isocyanate prepolymers (also known as low molecular carbamate ester polymers) and hydroxyl resins, commonly known as curing agent components and main agent components. There are many varieties of this type of coating, and the application range is also very wide. According to the difference of the hydroxyl group-containing components, it can be divided into acrylic polyurethane, alkyd polyure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/62C09D7/63C08G18/61
CPCC08G18/61C09D4/06C09D7/62C09D7/63
Inventor 严勇
Owner 广东邦宁新材料科技有限公司
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