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Anti-corrosive anti-abrasion coating powder for metal pipeline

A technology of metal pipes and powders, which is applied in the field of anti-corrosion and anti-abrasion coating powders, can solve the problems that the effect cannot meet the requirements, and achieve the effect of energy saving, low cost and improved life cycle

Inactive Publication Date: 2009-08-12
TIANJIN XINTE COATING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using powders that only have anti-corrosion properties, the effect cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The formula is epoxy resin E12: 80g; phenolic modified epoxy resin 20g; ultra-high molecular weight polyethylene (molecular weight 2 million) 11g; polyvinyl butyral 10g; dicyandiamide 2g; sebacic acid dihydrazide 3.5g ; Cast stone powder 66g (400 mesh); Superfine silicon carbide (400 mesh) 28g; Graphite powder: 0.8.

[0052] Specific preparation method:

[0053] (1) Pulverize epoxy resin E12 and phenolic modified epoxy resin in a pulverizer, sieve and take out with 80 mesh.

[0054] (2) Dry the cast stone powder and superfine silicon carbide (110°C*4 hours).

[0055] (3) Mix (1), (2) and other components in a mixer for 45 minutes.

[0056] (4) Take out all the powder materials and sieve them out from 80 mesh through a pulverizer, which is the finished product.

Embodiment 2

[0058] The formula is epoxy resin E12: 70g; phenolic modified epoxy resin 30g; ultra-high molecular weight polyethylene (molecular weight 1.5 million) 11g; polyvinyl butyral 12g; dicyandiamide 1.6g; sebacic acid dihydrazide 4.2 g; cast stone powder 70g (300 mesh); superfine silicon carbide (300 mesh) 25g; graphite powder: 0.9.

[0059] The preparation method is the same as in Example 1.

Embodiment 3

[0061] The formula is epoxy resin E12: 80g; phenolic modified epoxy resin 20g; ultra-high molecular weight polyethylene (molecular weight 1.5 million) 10g; polyvinyl butyral 10g; dicyandiamide 2.0g; sebacic acid dihydrazide 3.5 g; cast stone powder 64g (500 mesh); superfine silicon carbide (500 mesh) 25g; graphite powder: 0.6.

[0062] The preparation method is the same as in Example 1.

[0063] The coating method and application effect of the anti-corrosion and anti-abrasion coating powder of the present invention: degrease and sandblast the inner wall of the steel pipe or other parts to be sprayed on the surface, and clean the appearance of the steel according to the requirements of the national standard Sa3 sandblasting. For rust removal by blasting, the steel surface should have no visible grease, dirt, scale, rust and paint coating, and the surface should show a uniform metallic color.

[0064]After heating until the surface temperature of the parts reaches the set tempe...

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Abstract

The invention discloses a corrosion protection abrasionproof coating powder used for a metallic pipe. The coating powder takes home-made epoxy powder E12 and metlbond modified epoxy as a main body, takes dicyandiamide and sebacic dihydrazide as curing agents, adopts polyvinyl butyral and ultrahigh molecular weight polyethylene for toughening and levelling the powder, and adopts silicon carbide, cast stone powder and graphite for the support of antifriction self lubrication. The unique abrasionproof corrosion protection powder coating is formed by an energy-saving manufacturing process and hot melt painting. The coating powder emphasizes the abrasionproof characteristic based on the stress laid on the corrosion protection powder performance, is used for strengthening the inner wall surface abrasionproof function of a pumping well oil pipe in an oil field caused by the eccentric wear of a sucker rod, and is extensionally used for metallic parts needing the strengthened abrasionproof function in a corrosive environment.

Description

technical field [0001] The invention relates to a coating powder, in particular to an anti-corrosion and anti-abrasion coating powder for metal pipelines. Background technique [0002] At present, the coating powders used for oil pipelines, such as the heavy-duty anti-corrosion powder in the West-to-East Gas Transmission, the foundation pipe pile coating of the Hangzhou Bay Bridge, etc., are mostly composite phenolic epoxy resins, and the curing system chooses hydroxyl-terminated polyether and phenolic polymers. Compound and anion catalytic curing composite curing agent. Its performance is close to the level of similar foreign products and can meet the requirements of steel pipeline anticorrosion powder. [0003] However, the currently used heavy-duty anti-corrosion powder for the inner wall of the pipeline has excellent corrosion resistance. However, there is insufficient resistance to mechanical wear, especially for deep oil wells. Due to the influence of verticality, ec...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/03C09D5/08
Inventor 王志高葛汇业王胜利杨瑛
Owner TIANJIN XINTE COATING TECH
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