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Composite lamellar material modified water-based heavy anti-corrosion coating and preparation process thereof

A preparation process and layer material technology, which is applied in the field of composite sheet material modified water-based heavy-duty anti-corrosion coatings and its preparation, can solve the problems of increased electrochemical polarizability, harsh treatment, poor shielding performance, etc., to reduce contact , Improve anti-corrosion performance, solve the effect of high brittleness

Inactive Publication Date: 2020-10-02
上海暄洋化工材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the traditional zinc-rich heavy-duty anti-corrosion coatings have disadvantages such as poor shielding performance due to the microscopic porosity of the coating, the increase of electrochemical polarizability will easily cause premature failure of the coating, and harsh pretreatment of the steel surface during construction; Galvanizing technology first requires precise control of the process, otherwise it will easily lead to problems such as seepage and poor uniformity, and secondly, the protection period is short and easy to fail in the actual use environment

Method used

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  • Composite lamellar material modified water-based heavy anti-corrosion coating and preparation process thereof
  • Composite lamellar material modified water-based heavy anti-corrosion coating and preparation process thereof
  • Composite lamellar material modified water-based heavy anti-corrosion coating and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082]

[0083]

[0084] Component A: 17g of basalt flakes, 5g of graphene oxide dispersion, 15g of water-based phenolic resin, 15, iron oxide, 10g of barium sulfate, 15g of epoxy-polyamine adduct, 20g of water, 1g of anti-flash rust agent), dispersion It is composed of a mixture of 1g agent and 1g defoamer.

[0085] a. Surface modification of basalt scales to improve the dispersibility of basalt scales in the resin, and to improve the interface compatibility between basalt scales and resin;

[0086] b. Graphene oxide dispersion liquid is prepared by ultrasonic dispersion, positioning agent and pre-dispersion technology for graphene oxide.

[0087] Component B: It is composed of 48g modified epoxy resin latex, 0.5g defoamer, 1g PH regulator, 0.5g thickener and 40g water.

[0088] Among them, the epoxy latex of component B is acrylic modified epoxy latex, and its preparation process is:

[0089] a. React 100g epoxy resin and 10g surfactant (dodecylbenzene sulfonic acid) at 90℃ for 1 hou...

Embodiment 2

[0093]

[0094]

[0095] (1) A component: 18g of basalt flakes, 4g of graphene oxide dispersion, water-based phenolic resin (15g, iron oxide 10g, barium sulfate 15g, epoxy-polyamine adduct 20g, water 15g, anti-flash rust agent It is composed of a mixture of 1g, 1g of dispersant and 1g of defoamer.

[0096] a. Surface modification of basalt scales to improve the dispersibility of basalt scales in the resin, and to improve the interface compatibility between basalt scales and resin;

[0097] b. Graphene oxide dispersion liquid is prepared by ultrasonic dispersion, positioning agent and pre-dispersion technology for graphene oxide.

[0098] (2) Component B: It is composed of 45g modified epoxy resin latex, 0.5g defoamer, 1g PH adjuster, 0.5g thickener and 40g water.

[0099] Among them, the epoxy latex of component B is acrylic modified epoxy latex, and its preparation process is:

[0100] a. React 100g epoxy resin and 10g surfactant (dodecylbenzene sulfonic acid) at 90℃ for 2 hours, add ...

Embodiment 3

[0104]

[0105]

[0106] (1) Component A: 19g of basalt flakes, 3g of graphene oxide dispersion, 15g of water-based phenolic resin, 15g of iron oxide, 10g of barium sulfate, 20g of epoxy-polyamine adduct, 15.0g of water, anti-flash rust agent It is composed of a mixture of 1g, 1g of dispersant and 1g of defoamer.

[0107] a. Surface modification of basalt scales to improve the dispersibility of basalt scales in the resin, and to improve the interface compatibility between basalt scales and resin;

[0108] b. Graphene oxide dispersion liquid is prepared by ultrasonic dispersion, positioning agent and pre-dispersion technology for graphene oxide.

[0109] (2) B component: It is composed of 45g modified epoxy resin latex, 0.5g defoamer, 1g PH adjuster, 0.5g thickener and 40g water.

[0110] Among them, the epoxy latex of component B is acrylic modified epoxy latex, and its preparation process is:

[0111] a. React 100g epoxy resin and 10g surfactant (dodecylbenzene sulfonic acid) at 90℃ f...

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Abstract

The invention provides a composite lamellar material modified water-based heavy anti-corrosion coating and a preparation process thereof. According to the invention, graphene and basalt flakes are used as complex-phase anti-corrosion fillers to replace traditional metal flakes to be used as anti-corrosion fillers. The graphene is dispersed in the coating by utilizing the hydrophobicity, the conductivity and the sheet structure of the graphene, a compact and firm network can be formed to isolate water from the coating, the contact between water vapor and a substrate is reduced, and the conductivity of the graphene also plays a role in cathodic protection. The basalt flakes are used as the anticorrosive filler, so that the phenomenon of internal stress concentration of a resin matrix can beeffectively improved, staggered arrangement is formed among the flakes, a 'labyrinth effect' is formed, the path of a corrosive medium diffusing to matrix resin is prolonged, the time of the corrosivemedium permeating into the matrix resin is prolonged, and the anticorrosive performance of the coating is improved.

Description

Technical field [0001] The invention belongs to the technical field of new materials, and specifically relates to a composite sheet material modified water-based heavy-duty anticorrosive paint and a preparation process thereof. Background technique [0002] In the context of the continuous advancement of modern industrialization and the continuous construction and development of national infrastructure, the problems of corrosion and protection have always been urgently desired by all scientific and technological workers and the country to solve. Especially in the chemical industry and underwater infrastructure such as large structures and structures such as power plants, bridges, and towers built along the coast. Because it belongs to a relatively harsh corrosive environment, when in contact with a large amount of water vapor, acid radical ions are susceptible to the influence of the ocean's humid and hot environment. A large number of them accumulate on the structure of the faci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00C09D5/08C09D7/61C09D7/62C09D5/24
CPCC09D175/04C09D5/08C09D7/61C09D7/62C09D7/70C09D5/24C08K2201/001C08L2201/08
Inventor 姜明月汪培庆
Owner 上海暄洋化工材料科技有限公司
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