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Wear-resistant thermosetting powder coating for oil delivery pipe and preparation method thereof

A technology of thermosetting powder and oil pipeline, which is applied in the direction of powder coating, epoxy resin coating, coating, etc., to achieve good adhesion, excellent wear resistance and simple operation

Active Publication Date: 2021-03-19
上海船舶工艺研究所(中国船舶集团有限公司第十一研究所)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wear-resistant thermosetting powder coating for oil pipelines and its preparation method. The coating can withstand the corrosion of petroleum and the wear of impurities in it, and there is good adhesion between the coating and the substrate after plastic coating , to solve the problem that the coating in the prior art cannot resist both oil corrosion and impurity wear

Method used

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  • Wear-resistant thermosetting powder coating for oil delivery pipe and preparation method thereof

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Effect test

Embodiment 1

[0020] A wear-resistant thermosetting powder coating for oil pipelines, made of raw materials comprising the following mass fractions: 50% bisphenol A epoxy resin, 10% curing agent (phenolic hydroxyl resin with a hydroxyl value of 0.56mol / 100g), and 30% filler %, leveling agent 5.0%, curing accelerator 1.0%, degassing agent 1.0%, silane coupling agent 3.0%; the filler is mixed with barium sulfate, mica powder, glass beads and ceramic beads; leveling agent 503 solid leveling agent is used, the curing accelerator is Nanhai Yaohua 803A curing accelerator, and the degassing agent is benzoin;

[0021] A kind of preparation method of wear-resistant thermosetting powder coating for oil pipeline is: (1) take bisphenol A type epoxy resin, curing agent, filler and various auxiliary agents, stir under the rotating speed of 400r / min in high-speed mixer Pre-mixing, mixing time 10min; (2) Send the mixed raw materials into the melt extruder for melt extrusion, the screw temperature of the me...

Embodiment 2

[0023] A wear-resistant thermosetting powder coating for oil pipelines, made of raw materials comprising the following mass fractions: 40% bisphenol A epoxy resin, 15% novolac epoxy resin, curing agent (phenolic hydroxyl group with a hydroxyl value of 0.56mol / 100g) Resin) 10%, filler 25%, leveling agent 5.0%, curing accelerator 1.0%, degassing agent 1.0%, silane coupling agent 3.0%; wherein the filler consists of barium sulfate, mica powder, glass beads and ceramic beads It is mixed; the leveling agent is 503 solid leveling agent, the curing accelerator is dimethylimidazole, and the degassing agent is benzoin;

[0024] A kind of preparation method of wear-resistant thermosetting powder coating for oil pipeline is: (1) take bisphenol A type epoxy resin, novolac epoxy resin, curing agent, filler and various auxiliary agents, 500r / min in high-speed mixer Stirring and pre-mixing under the rotating speed of 8min, the mixing time is 8min; (2) the raw material after mixing is sent in...

Embodiment 3

[0026] A wear-resistant thermosetting powder coating for oil pipelines, made of raw materials comprising the following mass fractions: 20% bisphenol A epoxy resin, 22% novolac epoxy resin, curing agent (phenolic hydroxyl group with a hydroxyl value of 0.56mol / 100g) Resin) 12%, curing agent (dicyandiamide) 10%, pigment 5%, filler 13%, leveling agent 4.0%, curing accelerator 1.0%, degassing agent 1.0%, loosening agent 1%, hindered phenolic resistance Oxygen agent 0.5%, silane coupling agent 2.5%; the filler is a mixture of barium sulfate, mica powder, glass beads and ceramic beads; the leveling agent is 503 solid leveling agent, and the curing accelerator is dimethylimidazole , the loosening agent is fumed silica, and the degassing agent is benzoin;

[0027] A kind of preparation method of wear-resistant thermosetting powder coating for oil pipeline is: (1) take by weighing bisphenol A type epoxy resin, novolac epoxy resin, curing agent, filler and various auxiliary agents, 600r...

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Abstract

The invention provides a wear-resistant thermosetting powder coating for an oil delivery pipe and a preparation method thereof. The coating is prepared from the following raw materials by mass percentage: 30%-60% of thermosetting epoxy resin, 4.5%-30% of a curing agent, 20%-30% of pigment and / or filler and 2%-12% of an assistant; wherein the curing agent is a combination of phenolic hydroxyl resinand one or two or more of dicyandiamide, modified dicyandiamide and sebacic dihydrazide, and the phenolic hydroxyl resin is a phenolic curing agent which has a hydroxyl value of 0.5-0.7mol / 100g, contains hydroxyl, acylamino and amido polyfunctional groups and has an interpenetrating structure. The method is easy to operate, industrial production is easy to achieve, the product is used for coatingoil delivery pipelines, and the labor production efficiency of coating is high; the utilization rate of the coating can reach 98% or above; the coating has good adhesive force with a base material, is excellent in wear resistance, and is more environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of thermosetting powder coatings, and in particular relates to a wear-resistant thermosetting powder coating for oil pipelines and a preparation method thereof. Background technique [0002] Due to the fact that certain impurities will be produced during oil extraction and other links, oil and gas gathering and transportation pipelines often contain a certain amount of solid particles. These sandy fluids impact the inner wall of the pipeline and cause a certain degree of erosion and wear to it, which will eventually affect normal production and may cause pipeline leakage. For oil pipelines, corrosion, scaling, waxing, and wear are the four major public hazards, which always accompany this life cycle. In order to solve the problem of oil pipelines, it is urgent to develop a pipeline coating that is corrosion-resistant, wear-resistant, and has low transmission resistance, but the coatings currently used on oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61C09D5/03
CPCC09D163/00C09D5/033C08K2003/3045C08L2205/025C08L2203/18C08K13/04C08K7/20C08K7/18C08K3/34C08K3/30C08L63/00
Inventor 由佳王娟王永光张剑慧
Owner 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所)