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Anticorrosive coating, preparation method and applications of anticorrosive coating

A technology for anti-corrosion coatings and raw materials, applied in the field of its preparation and anti-corrosion coatings, can solve problems such as affecting drilling speed, stress fatigue, corrosion damage of drill pipes, etc.

Active Publication Date: 2014-12-24
北京碧海云智新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Drill pipes are often subjected to alternating stresses such as tension, torsion, and bending during use, causing fatigue damage to drill pipes; at the same time, corrosive media such as dissolved oxygen, carbon dioxide, and hydrogen sulfide in drilling mud corrode the inner wall of drill pipes. , the impact and wear of chlorides, carbonates and mud fillers in the formation on the drill pipe will cause serious corrosion damage to the drill pipe
The simultaneous action of stress fatigue and corrosion damage reduces the service life of the drill pipe, which not only increases the drilling cost, but also affects the drilling speed. In severe cases, it will cause resource damage and personal casualties

Method used

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  • Anticorrosive coating, preparation method and applications of anticorrosive coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] According to a typical embodiment of the present invention, a method for preparing an anti-corrosion coating is provided. The preparation method includes the following steps: 1) Weigh each component in component A according to the raw material formula of the above-mentioned anti-corrosion coating; Xylene, 1,4-butanediol diglycidyl ether, then raise the temperature of the reaction vessel to 50~70°C, after the novolak epoxy resin F51 is dissolved and mixed until uniform, add quartz powder, mica powder, talc into the reaction vessel Powder, titanium dioxide, antifoaming agent simethicone, coupling agent KH-570, and stir and mix; 3) Weigh component B according to the raw material formula of the above anti-corrosion coating; 4) Mix components A and B according to The mass ratio is 100:20~35 and the anti-corrosion coating is obtained after mixing evenly.

[0015] Preferably, between step 1) and step 2), it further includes: mixing the quartz powder, mica powder, talc powder,...

Embodiment

[0019] Formulation A component sees table 1

[0020] Table 1

[0021] Components / parts by weight

Example 1

Example 2

Example 3

Novolak epoxy resin F51

35

45

50

Xylene

14

13

12

1,4-Butanediol diglycidyl ether

12

11

10

Quartz powder

8

7

6

Mica powder

9

8

7

Talc powder

8

7

5

Titanium dioxide

10

7

8

Defoamer simethicone

2

1

1

Coupling agent KH570

2

1

1

[0022] Component B: curing agent modified polyetheramine-1784; the mass ratio of component A and component B in Example 1 is 100:20; the mass ratio of component A and component B in Example 2 is 100:35 ; A component and B component mass ratio are 100:30 in embodiment 3.

[0023] The preparation method of anticorrosion coating is as follows:

[0024] 1) Weigh each component according to the raw material top...

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Abstract

The invention discloses an anticorrosive coating, a preparation method and applications of the anticorrosive coating, wherein the anticorrosive coating comprises an A component and a B component, wherein the mass ratio of the A component to the B component is 100:20-35, and the A component comprises the following components by weight: 35-50 parts of novolac epoxy resin F51; 12-14 parts of xylene; 10-12 parts of 1,4-butanediol diglycidyl ether; 6-8 parts of quartz powder; 7-9 parts of mica powder; 5-8 parts of talc powder; 8-10 parts of titanium dioxide; 1-2 parts of defoaming agent dimethyl silicone; and 1-2 parts of coupling agent KH570; and the B component is modified polyether amine-1784. The anticorrosive coating prepared by adopting the technical scheme has the advantages of resistance to wear, resistance to acid and alkali corrosion, and resistance to high temperature and high pressure, and can meet the requirements of corrosion protection of oil drill pipe for exploitation.

Description

technical field [0001] The invention relates to the technical field of anticorrosion, in particular to an anticorrosion coating, its preparation method and its application. Background technique [0002] Drill pipes are often subjected to alternating stresses such as tension, torsion, and bending during use, causing fatigue damage to drill pipes; at the same time, corrosive media such as dissolved oxygen, carbon dioxide, and hydrogen sulfide in drilling mud corrode the inner wall of drill pipes. , The impact and wear of chlorides, carbonates and mud fillers in the formation on the drill pipe will cause serious corrosion damage to the drill pipe. The simultaneous action of stress fatigue and corrosion damage reduces the service life of the drill pipe, which not only increases the drilling cost, but also affects the drilling speed. In severe cases, it will cause resource damage and personal casualties. [0003] At present, there are three main protection measures for drill pip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/04C09D171/00C09D5/08C09D7/12
Inventor 邸建军熊金平李依璇方坤马玉然刘小平
Owner 北京碧海云智新材料技术有限公司