A kind of preparation method of polyborosiloxane modified polyurethane water-based coating

A polyborosiloxane, water-based coating technology, applied in the direction of coating, can solve the problems of poor flame retardant performance, poor aging resistance, etc., and achieve excellent mechanical properties, excellent chemical resistance, durable service life and protection. effect of function

Active Publication Date: 2021-07-02
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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Abstract

The invention discloses a preparation method of a polyborosiloxane-modified polyurethane water-based coating. The invention belongs to the technical field of coatings. The invention not only can maintain its low VOC and green environmental protection by polyborosiloxane-modified water-based polyurethane It can also improve its water resistance, heat resistance, mechanical properties, etc. The hydrophobic property can significantly improve the anti-adhesion of the coating surface to stains and bacteria, and the existence of fluorine and boron in the molecule makes its bactericidal performance further Enhanced, and the surface has good hydrophobicity, and can prevent stains from adhering to cause pollution loss, and the coating disclosed in the present invention has good toughness and flame retardancy, and has good hydrolysis resistance and heat aging resistance. It has the outstanding advantages of wear resistance, corrosion resistance and brightness, softness and elasticity, good water resistance and mechanical properties, 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 Patents(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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