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Durable polyurethane finish capable of resisting marine-atmosphere environment, and preparation method thereof

A polyurethane topcoat, marine atmosphere technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of easy aging, short validity period, loss of gloss, etc., to reduce shrinkage cavities and surface defects of coatings Effect

Active Publication Date: 2014-02-19
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic anti-corrosion coatings for marine and atmospheric environments have shortcomings such as short validity period, easy aging, and poor weather resistance. The artificial accelerated aging test is less than 2000h, and the gloss loss is 40%.

Method used

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  • Durable polyurethane finish capable of resisting marine-atmosphere environment, and preparation method thereof
  • Durable polyurethane finish capable of resisting marine-atmosphere environment, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] A long-lasting polyurethane topcoat resistant to marine and atmospheric environments: the weight percentage of component A is:

[0107] HDI trimer isocyanate: 94.5%;

[0108] Corrosion inhibitor: 0.5%;

[0109] Urethane grade butyl acetate: 5%;

[0110] The weight percentage of liquid B is:

[0111] Polyurethane resin hydroxyl component: 40%;

[0112] Xylene: 9.09%;

[0113] Polymethacrylate solution: 0.1%;

[0114] Fluorine-containing organic silicon solution: 0.1%;

[0115] No silicone acrylic polymer: 0.1%;

[0116] Polysiloxane-polyether copolymer: 0.01%;

[0117] Alkaline and acidic fatty acid surfactant mixture: 1.4%;

[0118] Ultraviolet light absorber: 0.2%;

[0119] Light stabilizer: 1%;

[0120] Polyurethane curing accelerator: 0.5%

[0121] Polyethylene micronized wax: 0.3%

[0122] PTFE micronized wax: 0.2%

[0123] Precipitated barium sulfate: 10%;

[0124] Quartz powder: 10%;

[0125] Sericite powder: 10%;

[0126] Rutile titanium dioxide: 17%;

[0127] The ingredients in use consi...

Embodiment 2

[0134] A long-lasting polyurethane topcoat resistant to marine and atmospheric environments, the weight percentage of component A is:

[0135] HDI trimer isocyanate: 92.4%;

[0136] Corrosion inhibitor: 0.6%;

[0137] Urethane grade butyl acetate: 7%;

[0138] The weight percentage of liquid B is:

[0139] Polyurethane resin hydroxyl component: 45%;

[0140] Xylene: 7%;

[0141] Polymethacrylate solution: 0.15%;

[0142] Fluorine-containing organic silicon solution: 0.15%;

[0143] Silicone-free acrylic polymer: 0.15%;

[0144] Polysiloxane-polyether copolymer: 0.05%;

[0145] Alkaline and acidic fatty acid surfactant mixture: 1.3%;

[0146] Ultraviolet light absorber: 0.4%;

[0147] Light stabilizer: 1.1%;

[0148] Polyurethane curing accelerator: 1%

[0149] Polyethylene micronized wax: 0.4%

[0150] PTFE micronized wax: 0.3%

[0151] Precipitated barium sulfate: 8%;

[0152] Quartz powder: 10%;

[0153] Sericite powder: 10%;

[0154] Rutile titanium dioxide: 15%;

[0155] The ingredient composition ...

Embodiment 3

[0158] A long-lasting polyurethane topcoat resistant to marine and atmospheric environments, the weight percentage of component A is:

[0159] HDI trimer isocyanate: 91.3%;

[0160] Corrosion inhibitor: 0.7%;

[0161] Urethane grade butyl acetate: 8%;

[0162] The weight percentage of liquid B is:

[0163] Polyurethane resin hydroxyl component: 50%;

[0164] Xylene: 8.12%;

[0165] Polymethacrylate solution: 0.2%;

[0166] Fluorine-containing organic silicon solution: 0.2%;

[0167] No silicone acrylic polymer: 0.2%;

[0168] Polysiloxane-polyether copolymer: 0.08%;

[0169] Alkaline and acidic fatty acid surfactant mixture: 0.9%;

[0170] Ultraviolet light absorber: 0.6%;

[0171] Light stabilizer: 1.3%;

[0172] Polyurethane curing accelerator: 1.5%

[0173] Polyethylene micronized wax: 0.5%

[0174] PTFE micronized wax: 0.4%

[0175] Precipitated barium sulfate: 9%;

[0176] Quartz powder: 8%;

[0177] Sericite powder: 7%;

[0178] Rutile titanium dioxide: 12%;

[0179] The ingredients in use consis...

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Abstract

The invention relates to a durable polyurethane finish capable of resisting marine-atmosphere environment, and a preparation method thereof. An A solution is prepared by an HDI trimer, a corrosion inhibitor and polyurethane-grade butyl acetate; a B solution is prepared by a polyurethane resin hydroxyl component, xylene, a polymethacrylate solution, a fluorine-containing organosilicone solution, a silicone-free acrylic polymer, a polysiloxane-polyether copolymer, a mixture of alkaline and acidic fatty acid surface active substances, a ultraviolet absorber, a light stabilizer, a polyurethane curing accelerator, a polyethylene micronization wax and precipitated barium sulphate, quartz powder, sericite powder and rutile-structured titanium dioxide. When being in use, the A solution and the B solution are mixed and cured to form a coating. The coating has good adhesion with a micaceous iron epoxy coating and an epoxy paste coating and has excellent weather resistance and salt fog resistance. An artificial accelerated aging test shows that gloss retention of the finish can reach 80% at 3,000 h. The finish can be applied in ocean platform overhead pipelines and offshore wharf surface pipelines.

Description

Technical field [0001] The invention relates to a long-lasting polyurethane topcoat resistant to marine atmospheric environment and a manufacturing method. Background technique [0002] Internationally, long-term protection (15-20 years) is generally required for the anti-corrosion protection of steel structures in marine environments, and the design is designed in accordance with this design idea, and material selection and construction are strictly controlled to achieve long-term protection of steel structures in marine environments. Effective protection. At present, domestic anti-corrosion coatings for marine and atmospheric environments have short expiry dates, easy aging, poor weather resistance, etc. The artificial accelerated aging test is less than 2000h, and the gloss loss is 40%. Summary of the invention [0003] The purpose of the present invention is to provide a coating film with excellent workability and storage stability, good adhesion with epoxy mica coating and h...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C09D5/08
Inventor 解蓓蓓韩文礼张贻刚黄桂柏杨耀辉张彦军徐忠苹张其滨
Owner BC P INC CHINA NAT PETROLEUM CORP
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