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Anticorrosion and antistatic method for oil filling pipe assembly and its mating paint

A filling tube and anti-corrosion technology, applied in the direction of epoxy resin coating, coating, etc., can solve the problems of affecting coating quality, unstable coating conductivity, long curing time, etc., to speed up coating film formation and curing Shorter time and better matching performance

Inactive Publication Date: 2004-07-28
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①Because it contains a lot of zinc powder, it is easy to react with water to generate hydrogen gas, which will cause swelling and hearing during storage after packaging, and the storage stability is less than 3 months
Moreover, the density of metal zinc is relatively high, and it will cause sinking phenomenon. When using it, it is difficult to stir it evenly, which will affect the quality of the final coating, and then affect the protection effect; ②Although zinc powder has conductivity, zinc powder It is very active in the air and is easily oxidized into zinc oxide. As time goes by, the zinc powder on the surface of the coating gradually loses its conductivity, making the conductivity of the coating unstable.
It can be seen that the single protective layer formed by only using this one-component epoxy zinc-rich primer cannot meet the anti-corrosion and antistatic requirements of the oil filler pipe assembly at the same time; Most of the resins use ketimine as the latent curing agent. The biggest disadvantage is that the curing time is too long, generally more than 7 days
Therefore, it cannot meet the requirements of mass production on the assembly line

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0012] Examples 1-2 One-component epoxy zinc-rich primer, the formula is shown in Table 1

[0013]

raw material name

Specification

Example

1

2

Binder

epoxy resin

E06 (hydroxyl value 0.37, epoxy group 0.04 ~ 0.07, number average

Molecular weight 2900), produced by Wuxi Resin Factory

100

100

crosslinking agent

blocked isocyanate

amino resin

self made

582, Shanghai Xinhua Resin Factory

40

-

-

30

Zinc powder

≥600 mesh

1000

1000

Absorbent

Vinyltrimethoxysilane

Industrial products

6.3

6.3

solvent

Ethylene glycol ether

Propylene glycol methyl ether acetate

Industrial products

Industrial products

154

143

154

143

[0014] The water-absorbing agent used in the above-mentioned example...

Embodiment 3～4

[0016] Examples 3-4 One-component epoxy antistatic topcoat, the formula is shown in Table 2

[0017]

raw material name

Specification

Example

3

4

Binder

epoxy resin

EO6 (hydroxyl value 0.37, epoxy group 0.04 ~ 0.07, number average

Molecular weight 2900), produced by Wuxi Resin Factory

100

100

crosslinking agent

blocked isocyanate

amino resin

self made

582, produced by Shanghai Xinhua Resin Factory

40

-

-

40

conductive powder

carbon black

graphite

Produced by Shanghai Carbon Black Factory

Produced by Shanghai Colloid Chemical Factory

22

34

22

34

Auxiliary

Dispersant

Anti-settling agent

BYK-161, produced by Buick, Germany

LD-125, produced by Yangzhou Lida Chemical Factory

11

8

11

8

...

Embodiment 5

[0021] Implementation of the anti-corrosion and anti-static method of embodiment 5 refueling pipe assembly

[0022] ①Surface treatment Use alkaline substances such as detergent to degrease and clean the surface of the steel substrate of the oil filling pipe assembly, pickle to remove rust and clean, and soak in zinc-manganese-based medium-temperature (40-55°C) phosphating solution for 2 ~8 minutes, then take it out to wash and dry;

[0023] ② Dip coating with the primer of Example 2, place it at room temperature for 30 minutes, send it into the drying tunnel and solidify at 200°C for 20 minutes, measure the dry film thickness of the anti-corrosion layer formed after cooling to 45-55 μm.

[0024] ③ Dip coating with the antistatic topcoat of Example 4, place at room temperature for 30 minutes, send it into the drying tunnel and solidify at 200°C for 20 minutes, and the total thickness of the dry film formed after cooling is 65-80 μm. At this time, it is the oil filling pipe ass...

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Abstract

The present invention relates to anticorrosion and antistatic method for oil filling pipe assembly and its mating paint. To the surface of iron and steel base of oil filling pipe assembly, single component epoxy zinc-riched primer to form anticorrosion layer and single component epoxy antistatic finish paint to form antistatic layer are painted successively. The two kinds of paint have the same base material and crosslinking agent and the crosslinking agent will crosslink with epoxy resin only at the cure temperature of 120-250 deg.c with short cure time. The two coatings are well matched. The method of the present invention may be used in production line.

Description

technical field [0001] The invention relates to an anti-corrosion and anti-static method of an oil filling pipe assembly and a matching coating thereof. Background technique [0002] The anti-corrosion and anti-static method of the oil filling pipe assembly can directly use the metal material with excellent anti-corrosion performance to make the oil filling pipe assembly without any protective layer. But this material is expensive and costly. Therefore, mostly adopt at present the coating coating on the steel surface of filling pipe assembly, realize the protection to filling pipe assembly with the coating that it forms. The key to this method is the type of paint selected. Coatings suitable for this purpose should combine good adhesion, corrosion protection and antistatic properties. The base material of the existing one-component epoxy zinc-rich primer is an epoxy resin with excellent comprehensive performance, especially excellent adhesion and anti-corrosion performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/25C09D163/00
Inventor 狄志刚袁立新付敏
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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