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Acid-base resistant high-temperature-resistant waterborne polyurethane coating and preparation method thereof

A water-based polyurethane, high-temperature-resistant technology, applied in the field of coatings, can solve problems such as limited use range and poor stability, and achieve the effects of good chemical resistance, improved heat exchange efficiency, and good heat resistance.

Inactive Publication Date: 2019-08-23
绵阳麦思威尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing coatings are not stable in acid-base or high-temperature conditions, and the scope of use is limited

Method used

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  • Acid-base resistant high-temperature-resistant waterborne polyurethane coating and preparation method thereof
  • Acid-base resistant high-temperature-resistant waterborne polyurethane coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An acid, alkali and high temperature resistant waterborne polyurethane coating, comprising the following components by weight: A component and B component, the mass ratio of A component and B component is 9:1;

[0036] Among them, component A includes the following components by weight: 28 parts of deionized water, 4 parts of graphene sol, 10 parts of film-forming aid dipropylene glycol butyl ether, 1 part of dispersant Disperbyk-190, and defoamer byk-024 4 parts, 1 part of leveling agent byk-348, 50 parts of water-based polyurethane emulsion Dispercoll U2710 and 2 parts of thickener DOW ACRYSOL RM-12W;

[0037] Component B includes the following components in parts by weight: 40 parts of propylene glycol methyl ether acetate, 55 parts of water-based polyisocyanate curing agent Aquolin 268, 4 parts of anti-flash rust agent SER-AD FA 179, and 1 part of defoamer TEGO 901W.

[0038] The above-mentioned graphene sol is prepared by the following method: add 3kg dispersant CO...

Embodiment 2

[0054] An acid, alkali and high temperature resistant waterborne polyurethane coating, comprising the following components by weight: A component and B component, the mass ratio of A component and B component is 9:1;

[0055]Among them, component A includes the following components by weight: 25 parts of deionized water, 7 parts of graphene sol, 10 parts of film-forming aid dipropylene glycol butyl ether, 1 part of dispersant Disperbyk-190, and defoamer byk-024 4 parts, 1 part of leveling agent byk-348, 50 parts of water-based polyurethane emulsion Dispercoll U2710 and 2 parts of thickener DOW ACRYSOL RM-12W;

[0056] Component B includes the following components in parts by weight: 40 parts of propylene glycol methyl ether acetate, 55 parts of water-based polyisocyanate curing agent Aquolin 268, 4 parts of anti-flash rust agent SER-AD FA 179, and 1 part of defoamer TEGO 901W.

[0057] The above-mentioned graphene sol is prepared by the following method: add 3kg dispersant COA...

Embodiment 3

[0073] An acid, alkali and high temperature resistant waterborne polyurethane coating, comprising the following components by weight: A component and B component, the mass ratio of A component and B component is 9:1;

[0074] Among them, component A includes the following components by weight: 22 parts of deionized water, 10 parts of graphene sol, 10 parts of film-forming aid dipropylene glycol butyl ether, 1 part of dispersant Disperbyk-190, and defoamer byk-024 4 parts, 1 part of leveling agent byk-348, 50 parts of water-based polyurethane emulsion Dispercoll U2710 and 2 parts of thickener DOW ACRYSOL RM-12W;

[0075] Component B includes the following components in parts by weight: 40 parts of propylene glycol methyl ether acetate, 55 parts of water-based polyisocyanate curing agent Aquolin 268, 4 parts of anti-flash rust agent SER-AD FA 179, and 1 part of defoamer TEGO 901W.

[0076] The above-mentioned graphene sol is prepared by the following method: add 3kg dispersant C...

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Abstract

The invention discloses an acid-base resistant high-temperature-resistant waterborne polyurethane coating and a preparation method thereof. The coating comprises the following components in parts by weight: 80-90 parts of a component A, and 10-20 parts of a component B, wherein the component A comprises the following components in parts by weight: 15-35 parts of deionized water, 4-10 parts of graphene sol, 8-12 parts of filming aids, 0.5-1.5 parts of a dispersant, 2.5-5.5 parts of a defoaming agent, 0.5-1.5 parts of a leveling agent, 45-55 parts of a waterborne polyurethane emulsion and 1-3 parts of a thickening agent; and the component B comprises the following components in parts by weight: 30-50 parts of propylene glycol monomethyl ether acetate, 45-65 parts of an aqueous polyisocyanatecuring agent, 2-6 parts of a flash-rust inhibitor and 0.5-1.5 parts of a defoaming agent. The coating can be used for a long time stably under high-temperature, acid and alkali conditions.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an acid-base-resistant and high-temperature-resistant water-based polyurethane coating and a preparation method thereof. Background technique [0002] A heat exchanger is an energy-saving device that transfers heat between materials between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the process The specified index is to meet the needs of the process conditions, and it is also one of the main equipment to improve energy utilization. [0003] In petrochemical and other fields, some high-power heat exchangers have high operating temperature and corrosive media, so the requirements for coating performance are relatively high. However, the existing coatings have poor stability under acid-base or high-temperature conditions, and their appl...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/62
CPCC09D5/18C09D7/62C09D175/04C08K9/04C08K3/042
Inventor 闫辉潘家震
Owner 绵阳麦思威尔科技有限公司
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