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An anti-rust and anti-corrosion adhesive paste for steel structures

A technology for corroding adhesives and structures, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of limited physical isolation performance, coarse grains, high temperature resistance, aging resistance, limited hardness and impact resistance, etc. question

Active Publication Date: 2019-09-27
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-rust and anti-corrosion adhesive pastes used in the past have coarse grains and cannot enter the small holes and defects on the corroded surface. Corrosion between the adhesive paste and the substrate gap is still unavoidable, and the physical isolation performance is limited. For Cl - The isolation effect of small-sized corrosive ions is poor, and the high temperature resistance, aging resistance, hardness and impact resistance are limited. The corrosion inhibitor in it is not enough to play a good protective role, so the anti-corrosion effect is not ideal, and the corrosion inhibitor Ingredients have some impact on the environment

Method used

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  • An anti-rust and anti-corrosion adhesive paste for steel structures
  • An anti-rust and anti-corrosion adhesive paste for steel structures
  • An anti-rust and anti-corrosion adhesive paste for steel structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The composition by weight percentage is: 55% of polybutene, 10% of organic bentonite, 3.5% of carboxymethyl chitosan, 0.2% of titanium dioxide, 21% of mica powder, 0.3% of graphene and 10% of zinc powder. The number of graphene powder layers is 4 layers, and the particle size is 8 μm. Zinc powder is spherical high-purity zinc powder with a specification of 800 mesh. Apply the obtained anti-rust and anti-corrosion adhesive paste to a Q235 carbon steel test piece with a size of 50×25×3mm, and remove the corrosion products after 30 days of salt spray test (see figure 1 ). Depend on figure 1 It can be seen that there are corrosion spots on the surface of the test piece, but the corrosion pits are relatively shallow, indicating that the corrosion is slight, and the anti-rust and anti-corrosion adhesive paste has a certain protective effect.

Embodiment 2

[0023] The composition by weight percentage is: 50% of polybutene, 9% of organic bentonite, 5% of carboxymethyl chitosan, 0.5% of titanium dioxide, 20% of mica powder, 0.5% of graphene and 15% of zinc powder. The number of graphene powder layers is 4 layers, and the particle size is 8 μm. Zinc powder is spherical high-purity zinc powder with a specification of 800 mesh. Apply the obtained anti-rust and anti-corrosion adhesive paste to a Q235 carbon steel test piece with a size of 50×25×3mm, and remove the corrosion products after 30 days of salt spray test (see figure 2 ). Depend on figure 2 It can be seen that, compared with Example 1, the surface corrosion of the test piece of Example 2 is lighter, indicating that the anti-rust and anti-corrosion adhesive paste of Example 2 has a better protective effect.

[0024] Adopt Q235 carbon steel salt spray hanging piece experiment and the anticorrosion effect of macroscopic appearance measurement embodiment, as follows (referri...

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Abstract

The invention relates to an anti-corrosion material, and particularly relates to an anti-rust and anti-corrosion adhesive paste for iron and steel structures. The adhesive paste comprises the following components in percentage by weight: 50-60% of polybutylene, 8-15% of organic bentonite, 2-10% of carboxymethyl chitosan, 0.1-1% of titanium dioxide, 18-25% of mica powder, 0.2-1% of grapheme and 7-15% of zinc powder. According to the anti-rust and anti-corrosion adhesive paste disclosed by the invention, with the addition of the graphene and the zinc powder, the cathodic protection effect is improved, and an advantage that water and corrosive media such as Cl<-> and the like are blocked, so that the rust-proof and anti-corrosion adhesive paste has very strong adhesive force, substrate surface defect repairing property and physical isolation property, the service life is long, the flexibility and the aging resistance are high, and the anti-corrosion performance is excellent.

Description

technical field [0001] The invention relates to anti-corrosion materials, in particular to an anti-rust and anti-corrosion adhesive paste for iron and steel structures. [0002] technical background [0003] With the continuous growth of my country's economy and the continuous increase of large-scale engineering construction, the use of steel materials has increased, and the corrosion of steel materials has also attracted more and more attention. Corrosion not only brings economic losses, but also endangers personal safety and is not conducive to the protection of natural resources and the environment. Anti-rust and anti-corrosion adhesive paste is widely used as an effective anti-corrosion method because of its simple construction, low requirements for surface cleaning, and can be applied to various complex shapes and structures. However, the anti-rust and anti-corrosion adhesive pastes used in the past have coarse grains and cannot enter the small holes and defects on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/20C09J11/08C09J11/04
Inventor 李言涛覃明侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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