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Waterborne polyurethane coating for engineering machinery and preparation method of waterborne polyurethane coating

A water-based polyurethane and engineering machinery technology, applied in the field of engineering coatings, can solve the problems of easy discoloration, short service life, poor sun protection, etc., and achieve the effect of improving UV resistance and good UV shielding effect.

Inactive Publication Date: 2020-02-28
湖南太子化工涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the invention provides a water-based polyurethane coating for engineering machinery and its preparation method, which solves the problems of poor sun protection, easy discoloration, easy falling off, and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1, the titanium dioxide powder is placed in a grinding device for grinding, and the ground titanium dioxide powder is passed through a 200-mesh sieve to obtain a very fine titanium dioxide powder for later use;

[0025] S2. Take 10 parts of ultra-fine titanium dioxide powder and 50 parts of water-based polyurethane resin prepared in step S1 and place them in the reactor, stir at room temperature to mix the two evenly, and then add 1 part of glass fiber to the reactor while stirring and 2 parts of toughening agent, continue to stir to make the material mix evenly, and obtain A emulsion for later use;

[0026] S3. Take 6 parts of curing agent, 2 parts of drier, 3 parts of dispersant, 3 parts of antioxidant and 18 parts of mica powder in a stirring device, mix evenly at room temperature, and prepare additives for use;

[0027] S4. Put the additive prepared in step S3 into the reaction kettle filled with emulsion A in step S2, and stir at a speed of 150r / min for 20min at 4...

Embodiment 2

[0030] S1, the titanium dioxide powder is placed in a grinding device for grinding, and the ground titanium dioxide powder is passed through a 200-mesh sieve to obtain a very fine titanium dioxide powder for later use;

[0031] S2. Take 15 parts of ultra-fine titanium dioxide powder and 55 parts of water-based polyurethane resin prepared in step S1 and place them in the reactor, stir at room temperature to mix the two evenly, and then add 4 parts of glass fiber to the reactor while stirring and 3 parts of toughening agent, continue to stir, make the material mix evenly, get A emulsion for later use;

[0032] S3. Take 10 parts of curing agent, 3 parts of drier, 5 parts of dispersant, 5 parts of antioxidant and 22 parts of mica powder in a stirring device, mix evenly at room temperature, and prepare additives for use;

[0033] S4. Put the additive prepared in step S3 into the reaction kettle filled with emulsion A in step S2, stir at a speed of 150r / min for 35min at 50°C, and ad...

Embodiment 3

[0036] S1, the titanium dioxide powder is placed in a grinding device for grinding, and the ground titanium dioxide powder is passed through a 200-mesh sieve to obtain a very fine titanium dioxide powder for later use;

[0037] S2. Take 10 parts of ultra-fine titanium dioxide powder and 60 parts of water-based polyurethane resin prepared in step S1 and place them in the reactor, stir at room temperature to mix the two evenly, and then add 6 parts of glass fiber to the reactor while stirring and 4 parts of toughening agent, continue to stir, make the material mix evenly, get A emulsion for later use;

[0038] S3. Take 12 parts of curing agent, 4 parts of drier, 8 parts of dispersant, 7 parts of antioxidant and 25 parts of mica powder in a stirring device, mix evenly at room temperature, and prepare additives for use;

[0039] S4. Put the additive prepared in step S3 into the reaction kettle filled with emulsion A in step S2, stir at a speed of 150r / min for 30min at 60°C, and add ...

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PUM

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Abstract

The invention discloses a waterborne polyurethane coating for engineering machinery and relates to the technical field of engineering coatings. The coating comprises the following components in partsraw material: 50 parts of waterborne polyurethane resin, 10 parts of titanium dioxide, 6 parts of a curing agent, 2 parts of a drier, 1 part of glass fiber, 2 parts of a flexibilizer, 10 parts of a coalescing agent, 4 parts of a defoaming agent, 3 parts of a dispersing agent, 5 parts of vinyl bis stearamide, 3 parts of an antioxidant and 18 parts of mica powder. According to the waterborne polyurethane coating for the engineering machinery and the preparation method of the waterborne polyurethane coating, the titanium dioxide is added into the coating, so that the ultraviolet resistance of thecoating can be effectively improved, the waterborne polyurethane coating is not liable to fade after being used for a long time after being coated, and the strength of the coating can be enhanced through mutual cooperation of the glass fibers and the flexibilizer, so that the coating is not liable to fall off; the service life of the coating is prolonged, the vinyl bis stearamide can improve theglossiness of the waterborne polyurethane coating, and the waterborne polyurethane coating is smooth in surface, good in glossiness and more attractive after being coated.

Description

technical field [0001] The invention relates to the technical field of engineering coatings, in particular to a water-based polyurethane coating for engineering machinery and a preparation method thereof. Background technique [0002] Paint is a kind of liquid substance with flowability, which can form a continuous solid coating film with protection, decoration or special properties when applied on the surface of an object. The paint provides decorative effects such as color, texture, retouching and gloss level. Different coatings provide protection for different types of substrates. According to different coating formulations, coatings can provide protection against high humidity chemicals, oils, corrosion, algae growth, and abrasion. Coatings can also be formulated for special purposes, such as Fluorescent paint for signs, and other flame-retardant paints, anti-condensation paints and electroplating paints, etc. The paint is generally composed of film-forming substances, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/61C09D7/63
CPCC08K2003/2241C08K2201/011C09D175/04C09D7/61C09D7/63C09D7/70C08K13/04C08K7/14C08K3/22C08K5/20C08K3/34
Inventor 刘骏
Owner 湖南太子化工涂料有限公司
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