Special anti-corrosive coating for transmission tower and preparation method of anti-corrosive coating

A technology for anti-corrosion coatings and transmission towers, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as high content of polyphenylene sulfide resin, low surface tension of pure fluorine coatings, and uneven coating thickness. Achieve the effects of good adhesion, good controllability of coating thickness, and simple spraying

Inactive Publication Date: 2020-01-03
STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent application (CN201110403868.2) provides a new anti-corrosion transmission tower preparation method, the coating uses a composite coating of fluorine resin and polyphenylene sulfide resin as the main components, and the service life of the coating can reach more than 30 years, but , the content of polyphenylene sulfide resin in the coating is high, and the molecular structure of polyphenylene sulfide makes it hard and brittle. At the same time, the top coat is made of pure fluorine coating. The surface tension of pure fluorine coating is small, and it is difficult to wet. Dispersion, poor leveling, resulting in uneven thickness of the prepared coating, and the existing coating requires primer, intermediate paint and top coat, and the application thickness is relatively large
The existing zinc-rich epoxy resin has good initial adhesion due to high zinc content, but poor durability; at the same time, epoxy resin modified by inorganic fillers is easy to absorb and agglomerate due to the addition of nano inorganic fillers, reducing the performance of the coating

Method used

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  • Special anti-corrosive coating for transmission tower and preparation method of anti-corrosive coating
  • Special anti-corrosive coating for transmission tower and preparation method of anti-corrosive coating
  • Special anti-corrosive coating for transmission tower and preparation method of anti-corrosive coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A special anti-corrosion coating for transmission towers: primer formula: 58 parts of epoxy resin, 12 parts of n-butyl titanate, 8 parts of chromium acetylacetonate, 12 parts of polyvinyl formal, and 70 parts of zinc powder;

[0034] The preparation method is as follows:

[0035] (1) Add 240 parts of n-butanol to chromium acetylacetonate, then add n-butyl titanate dropwise under stirring, add 0.065 part of mercaptopropyl triethoxysilane after the dropwise addition, stir evenly, and add to the reaction kettle , firstly heated to 70-80°C at a heating rate of 1°C / min, and then heated to 110-120°C at a heating rate of 5°C / min, holding the reaction for 12h

[0036] , and the reaction mixture is obtained after the end of the reaction;

[0037] (2) Heat the epoxy resin to 100-120°C, then slowly add the above mixture, and keep stirring for 2 hours to obtain the modified epoxy resin;

[0038] (3) Mix the modified epoxy resin, polybutene pure formal, zinc powder and mixed solut...

Embodiment 2

[0044] A special anti-corrosion coating for power transmission towers: primer formula: 50 parts of epoxy resin, 11 parts of n-butyl titanate, 5 parts of chromium acetylacetonate, 12-15 parts of polyvinyl formal, and 75 parts of zinc powder;

[0045] The preparation method is as follows:

[0046] (1) Add 220 parts of n-butanol to chromium acetylacetonate, then add n-butyl titanate dropwise under stirring, add 0.059 parts of mercaptopropyl triethoxysilane after the dropwise addition, stir evenly, and add to the reaction kettle , firstly, the temperature was raised to 70-80°C at a heating rate of 1°C / min, then to 110-120°C at a heating rate of 5°C / min, and the reaction was kept for 12 hours, and a mixed solution was obtained after the reaction;

[0047] (2) Heat the epoxy resin to 100-120°C, then slowly add the above mixture, and keep stirring for 2 hours to obtain the modified epoxy resin;

[0048] (3) Mix the modified epoxy resin, polybutene pure formal, zinc powder and mixed so...

Embodiment 3

[0052] A special anti-corrosion coating for power transmission towers: primer formula: 60 parts of epoxy resin, 15 parts of n-butyl titanate, 8 parts of chromium acetylacetonate, 12-15 parts of polyvinyl formal, and 80 parts of zinc powder;

[0053] The preparation method is as follows:

[0054] (1) Add 300 parts of n-butanol to chromium acetylacetonate, then add n-butyl titanate dropwise under stirring, add 0.081 part of mercaptopropyl triethoxysilane after the dropwise addition, stir evenly, and add to the reaction kettle , first heat up to 70-80°C at a heating rate of 1°C / min, then heat up to 110-120°C at a heating rate of 5°C / min, and keep the reaction for 12h,

[0055] After the reaction finishes, a mixed solution is obtained;

[0056] (2) Heat the epoxy resin to 100-120°C, then slowly add the above mixture, and keep stirring for 2 hours to obtain the modified epoxy resin;

[0057] (3) Mix the modified epoxy resin, polybutene pure formal, zinc powder and mixed solution ...

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Abstract

The invention belongs to the technical field of corrosion prevention, and particularly relates to a special anti-corrosive coating for a transmission tower and a preparation method of the anti-corrosive coating. The primer of the anti-corrosive coating comprises epoxy resin, n-butyl titanate, chromium acetylacetonate, polyvinyl formal and zinc powder, and the topcoat of the coating comprises tetrafluoroethylene, dicyclohexylmethane diisocyanate, acrylate, acrylic acid, methyl isobutyl ketone, azobisisobutyronitrile and dibutyltin dilaurate. The primer which is prepared through modification ofepoxy resin has good adhesion to steel components of the transmission tower, good adhesion and excellent electrochemical or chemical anti-corrosive functions, the weather resistance and corrosion resistance of the coating can be improved, and a short curing time and good durability are achieved; and the topcoat has simple spray, good thickness controllability, resistance to damage which is causedby ultraviolet rays and a wide application range.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion, and in particular relates to a special anti-corrosion coating for a power transmission tower and a preparation method thereof. Background technique [0002] Transmission towers are the support points of overhead lines. Due to the rapid economic development, the demand for electricity is increasing day by day, and safe and reliable power supply is very important. The power transmission network undertakes the task of national power transmission, in which the safe and reliable operation of the transmission tower is crucial to ensure the reliable transmission of power. When the transmission tower is in operation, it encounters various corrosion damages in various natural environments. The corrosion of the transmission tower construction is a frequent problem in the project, and the mechanical properties of the corroded transmission tower are greatly reduced. [0003] At present, about 80% of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D129/14C09D5/10C09D7/62C09D127/18C08F214/26C08F220/10C08F220/06
CPCC08F214/265C08F220/06C08F220/10C08K2003/0893C08K2003/2241C09D5/106C09D127/18C09D163/00C09D7/62C08L29/14C08K9/06C08K3/22C08K3/08
Inventor 齐艳冯宗英温淼苏玉梅朱承香刘廷艳
Owner STATE GRID SHANDONG ELECTRIC POWER
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