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A kind of long-acting polyurethane topcoat resistant to marine atmospheric environment and its manufacturing method

A polyurethane topcoat, marine atmosphere technology, used 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 coating shrinkage and reduce surface defects. Effect

Active Publication Date: 2015-08-12
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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  • A kind of long-acting polyurethane topcoat resistant to marine atmospheric environment and its manufacturing method
  • A kind of long-acting polyurethane topcoat resistant to marine atmospheric environment and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] A long-acting 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] B liquid weight percentage is:

[0111] Polyurethane resin hydroxyl component: 40%;

[0112] Xylene: 9.09%;

[0113] Polymethacrylate solution: 0.1%;

[0114] Fluorinated silicone solution: 0.1%;

[0115] Silicone-free acrylic polymer: 0.1%;

[0116] Polysiloxane-polyether copolymer: 0.01%;

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

[0118] UV absorber: 0.2%;

[0119] Light stabilizer: 1%;

[0120] Polyurethane curing accelerator: 0.5%

[0121] Polyethylene Micropowder Wax: 0.3%

[0122] PTFE Micropowder Wax: 0.2%

[0123] Precipitated barium sulfate: 10%;

[0124] Quartz powder: 10%;

[0125] Sericite powder: 10%;

[0126] Rutile titanium dioxide: 17%;

[0127] The batch compositi...

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] B liquid weight percentage is:

[0139] Polyurethane resin hydroxyl component: 45%;

[0140] Xylene: 7%;

[0141] Polymethacrylate solution: 0.15%;

[0142] Fluorinated silicone 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] UV absorber: 0.4%;

[0147] Light stabilizer: 1.1%;

[0148] Polyurethane curing accelerator: 1%

[0149] Polyethylene Micropowder Wax: 0.4%

[0150] PTFE Micropowder Wax: 0.3%

[0151] Precipitated barium sulfate: 8%;

[0152] Quartz powder: 10%;

[0153] Sericite powder: 10%;

[0154] Rutile titanium dioxide: 15%;

[0155] The batch compositi...

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] B liquid weight percentage is:

[0163] Polyurethane resin hydroxyl component: 50%;

[0164] Xylene: 8.12%;

[0165] Polymethacrylate solution: 0.2%;

[0166] Fluorinated silicone solution: 0.2%;

[0167] Silicone-free acrylic polymer: 0.2%;

[0168] Polysiloxane-polyether copolymer: 0.08%;

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

[0170] UV absorber: 0.6%;

[0171] Light stabilizer: 1.3%;

[0172] Polyurethane curing accelerator: 1.5%

[0173] Polyethylene Micropowder Wax: 0.5%

[0174] PTFE Micropowder Wax: 0.4%

[0175] Precipitated barium sulfate: 9%;

[0176] Quartz powder: 8%;

[0177] Sericite powder: 7%;

[0178] Rutile titanium dioxide: 12%;

[0179] The batch composition...

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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-acting polyurethane topcoat resistant to marine and atmospheric environments and a manufacturing method thereof. Background technique [0002] Internationally, the anti-corrosion protection of steel structures in marine environments generally requires long-term protection (15 to 20 years), and the design is carried out according to this design idea, and the material selection and construction are strictly controlled in order to achieve the long-term protection of steel structures in marine environments. effective protection. 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%. Contents of the invention [0003] The purpose of the present invention is to provide a coating film with excellent workability and storage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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