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Polyether polyurethane marine heavy anticorrosive paint and preparation method thereof

A technology of polyether polyurethane and elastic polyurethane, which is applied in the field of polyether polyurethane marine heavy-duty anti-corrosion coating and its preparation, and can solve the problems of unsatisfactory spraying effect, poor appearance quality, and affecting the appearance quality and appearance image of metal plates, etc.

Inactive Publication Date: 2010-06-30
李岳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and there are defects such as poor appearance quality, easy division, easy wear damage, dull luster, etc., thus affecting the appearance quality and appearance image of the metal plate

Method used

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Examples

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Embodiment Construction

[0006] 45kg of polyether polyol, 5kg of water absorbent, 25kg of micro-powdered silica, 15kg of talcum powder, 15kg of toluene, 15kg of xylene, 45kg of polyisocyanate (curing agent), 365kg of spherical metal zinc powder with an average particle size of 1-5 μm; B weight The composition in kg is: polyether polyol 60kg, talcum powder 32kg, titanium dioxide 3kg, absorbent (zeolite) 5kg, polyisocyanate (curing agent) 50kg.

[0007] The polyether polyol used in the above-mentioned primer and topcoat is the product obtained by the reaction of trimethylolpropane and propylene oxide, its hydroxyl content is 7.5%, the hydroxyl equivalent is 228, the acid value is 0.3, and the viscosity (20 ℃) ​​is 1.2 Pa·s.

[0008] Above-mentioned polyisocyanate is the mixed product of modified MDI and MDI prepared by reacting 5mol of diphenylmethane 4,4'-diisocyanate (MDI) and 1mol of tripropylene glycol, and its isocyanate group content is 24%, and the isocyanate equivalent is 173 , the viscosity (2...

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PUM

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Abstract

The invention relates to a polyether polyurethane marine heavy anticorrosive paint and a preparation method thereof. The paint consists of an elastic polyurethane zinc powder primer A and an elastic polyurethane finish paint B, wherein the A comprises the following compositions in part by weight: 45 parts of polyether glycol, 5 parts of water absorbent, 25 parts of micro-powdery silicon dioxide, 15 parts of talcpowder, 15 parts of toluene, 15 parts of dimethylbenzene, 45 parts of polyisocyanate (a curing agent) and 365 parts of spherical metal zinc powder with average particle diameter of between 1 and 5 mu m; and the B comprises the following compositions in part by weight: 60 parts of polyether glycol, 32 parts of talcpowder, 3 parts of titanium dioxide, 5 parts of absorbent (zeolite) and 50 parts of polyisocyanate (the curing agent). A coating film of the organic sol solvent paint has impact resistance, flexing resistance, abrasion resistance and cold resistance which are superior to those of a conventional heavy anticorrosive paint. The polyether polyurethane marine heavy anti-corrosive paint adopts double-port airless spray; and a substrate material is processed by shot blast or sand blast and the polyether polyurethane marine heavy anti-corrosive paint can also be directly used on a steel structure. The polyether polyurethane marine heavy anti-corrosive paint is used for seriously-corrosive environmental steel structures of ocean, seashore, industrial areas and the like, marine structures of offshore oil platforms, marine cranes, marine bridges and the like, and various pipelines and the like.

Description

Technical field: [0001] The invention belongs to a coating and a preparation method thereof. In particular, it relates to a polyether polyurethane marine heavy-duty anti-corrosion coating and a preparation method thereof. Background technique: [0002] The current coatings used for spraying metal surfaces have unsatisfactory spraying effects, and have defects such as poor appearance quality, easy division, easy wear damage, dull luster, etc., thereby affecting the appearance quality and appearance image of the metal plate. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a kind of polyether polyurethane marine heavy anti-corrosion coating which is easy to spray, has a good application effect, and has a bright surface after spraying. The technical scheme of the present invention is: the coating is composed of elastic polyurethane zinc powder primer A and elastic polyurethane top...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/10C09D5/16
Inventor 李岳
Owner 李岳
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