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Zinc surface repairing paint for power transmission towers and preparing method thereof

A technology for repairing coatings and transmission towers, applied in anti-corrosion coatings, coatings, etc., can solve the problems of low protection performance, coating corrosion, complex shape of transmission towers, etc., to achieve excellent protection, corrosion resistance, corrosion resistance improved effect

Active Publication Date: 2015-02-25
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface treatment level before zinc-rich paint coating is generally above St2.5. However, in the environment where the transmission tower is in service, resources and energy allocation are not in place, and the shape of the transmission tower is complex, and the maintenance work area is not small from the ground. , the performance of electric tools and other surface treatment tools is difficult to guarantee, and the surface after treatment has a certain amount of red rust and white rust. Coating on such a surface cannot guarantee the adhesion strength and corrosion resistance of the zinc-rich coating, which is low The research and development of surface-treated zinc protective layer repair coatings is on the agenda. Gao Xiang, Chen Yun and others used two-component epoxy resin as a film-forming material, matched with scaly zinc powder, and organic rust-reducing agents to prepare zinc-rich coatings with low surface treatment. After doing some research, the coating appeared to be rusted in neutral salt spray for 800 hours, and the protective performance was far lower than that of conventional zinc-rich coatings.

Method used

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  • Zinc surface repairing paint for power transmission towers and preparing method thereof
  • Zinc surface repairing paint for power transmission towers and preparing method thereof
  • Zinc surface repairing paint for power transmission towers and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Mix 3g of ternary copolymer resin with 13g of solvent, add 1.5g of dispersant, 0.62g of organic-inorganic hybrid agent Inorgent-A, and stir mechanically for 15-30min;

[0025] (2) Add 2g of aluminum tripolyphosphate, 1.5g of strontium chrome yellow, 1.5g of titanium dioxide, and 2g of zinc oxide into the uniformly dispersed system in step (1), and stir vigorously for 45min to 80min;

[0026] (3) Add 42g of composite zinc powder into the system obtained in step (2), and mechanically stir for 30 to 45 minutes;

[0027] (4) Mix 5g of ternary copolymer resin with 17g of solvent, stir for 15-30min, add 1.5g of dispersant, 2.5g of organic-inorganic hybrid agent Inorgent-A, mix well and add the obtained product from step (3) system to obtain component A;

[0028] (5) Mix 1.2 g of solvent with curing agent to obtain component B with a solid content of 65%;

[0029] (6) Mix component B with a solid content of 65% and component A according to a mass ratio of 1:24, and stir ...

Embodiment 2

[0032] (1) Mix 4g of ternary copolymer resin with 17g of solvent, add 1g of dispersant, 1g of organic-inorganic hybrid agent Inorgent-A, and stir mechanically for 15-30min;

[0033] (2) Take an appropriate amount of zinc chromate, zinc molybdate, titanium dioxide, zinc phosphate, and organic-inorganic hybrid agent Inorgent-A according to the mass ratio of 3:2:2:3:4, and grind it through a three-roller mill for 45 minutes~ 80min, the composite anti-rust pigment slurry was prepared;

[0034](3) Add 40 g of composite zinc powder and 7 g of the slurry obtained in step (2) to the system obtained in step (1), and mechanically stir for 15 to 30 minutes;

[0035] (4) Take 4g of ternary copolymer resin, stir 13g of solvent for 15-30min, add 1g of dispersant, add 2g of organic-inorganic hybrid agent Inorgent-A to the system obtained in step (3), and obtain component A;

[0036] (5) Mix 1.7 g of solvent with curing agent to obtain component B with a solid content of 50%;

[0037] (6) M...

Embodiment 3

[0040] (1) Take 3g of ternary copolymer resin, 13g of solvent, 2g of organic-inorganic hybridization agent Inorgent-A, and stir well;

[0041] (2) Get 3g of aluminum tripolyphosphate, 2g of titanium dioxide, 1.5g of strontium chrome yellow, and 2g of zinc oxide into the uniformly dispersed system of step (1), adjust the distance between the colloid mill discs to 25 μm to 30 μm, Grinding for 45min~80min;

[0042] (3) Adjust the distance between the colloid mill discs to 45 μm to 50 μm, add 44 g of composite zinc powder and grind for 15 to 30 minutes;

[0043] (4) Take 5g of ternary copolymer resin, 17g of solvent, add 1.5g of dispersant, and add 1 part of organic-inorganic hybrid agent Inorgent-A to the system obtained in step (3) to obtain component A;

[0044] (6) Add 3g of curing agent into component A and stir evenly;

[0045] (7) Add 2g of diluent, and after aging for 30 minutes, prepare a zinc repair coating by manual brushing, 50 μm each, and brush 3 times;

[0046] S...

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Abstract

The invention belongs to the field of heavy anti-corrosion paints and painting and relates to zinc surface repairing paint for power transmission towers and a preparing method thereof. The zinc surface repairing paint comprises bi-component terpolymer resin, solvent, dispersant, organic-inorganic hybrid agent Inorgent-A, compound zinc powder, compound anti-rust pigment, diluent and isocyanate hardener. A coating of the zinc surface repairing paint made on base materials of hot-dipped zinc, plated zinc, Q235 (St3) or Q235 (St2) is resistant to ultraviolet for 2000h and resistant to neutral salt mist for over 3000h and features an integrated bottom; after the coating is used with finish paint, corrosion resistance of the coating is further improved. The zinc surface repairing paint is applicable to repairing of zinc protective layers of power transmission towers, excellent protection and excellent corrosion resistance of the zinc surface repairing paint satisfy the need of a steel structure for long-term protection, and the zinc surface repairing paint is widely applicable to heavy-duty protection of steel structures.

Description

technical field [0001] The invention belongs to the field of heavy-duty anti-corrosion coatings and coatings, in particular for the repair of zinc protective layers (hot-dip galvanized layers, galvanized layers, zinc-rich coatings, etc.) of power transmission towers and the field of heavy-duty anti-corrosion coatings for other steel structures, and relates to a A zinc repair paint component and a preparation process. Background technique [0002] Zinc protection layer technologies such as hot-dip galvanizing, thermal spraying zinc, electro-galvanizing, and zinc-rich coatings are widely used in the protection of transmission towers. During construction and application, defects such as damage to the zinc protection layer of transmission towers will inevitably occur, and corrosion failure will first occur in the Especially in harsh environments such as heavy industrial pollution areas, the failure of the zinc protective layer is greatly accelerated, which greatly affects the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D133/08C09D131/04C09D127/06C09D127/04C09D5/10C09D7/12
CPCC08K3/08C08K9/04C08K2003/0893C08K2201/003C09D5/106C09D7/61C09D7/62C09D127/04C09D127/06C09D131/04C09D133/02C09D133/08
Inventor 高瑾李晓刚田东波宋东东李辛庚王学刚
Owner UNIV OF SCI & TECH BEIJING