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Waterborne epoxy anticorrosive coating for inner wall of petroleum storage tank in medium environment and preparation method of waterborne epoxy anticorrosive coating

A technology for epoxy anti-corrosion coatings and petroleum storage tanks, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of chemical resistance, wear resistance, hardness, water resistance Not easy to cure, slow drying speed, etc

Active Publication Date: 2022-01-14
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, water-based epoxy coatings are inferior to solvent-based epoxy coatings in many properties (such as chemical resistance, abrasion resistance, hardness, water resistance, etc.)
Moreover, water-based coatings are not easy to cure in a low temperature environment and have a common technical problem of slow drying.

Method used

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  • Waterborne epoxy anticorrosive coating for inner wall of petroleum storage tank in medium environment and preparation method of waterborne epoxy anticorrosive coating
  • Waterborne epoxy anticorrosive coating for inner wall of petroleum storage tank in medium environment and preparation method of waterborne epoxy anticorrosive coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of water-based epoxy anticorrosion coating in the medium environment of the inner wall of an oil storage tank, comprising the following steps:

[0048] Step 1, modification of hexagonal boron nitride powder

[0049] The hexagonal boron nitride powder was fully dried in an oven at 110°C for 8 hours, and the temperature dropped to room temperature before use.

[0050] 1 part by weight of the treated hexagonal boron nitride powder and 100 parts by weight of a 50% carbonamide ethanol solution were stirred at 80° C. for 24 hours at high speed, and then naturally cooled to room temperature. Put the treatment solution in a centrifuge, centrifuge the treated hexagonal boron nitride, wash it several times, and dry it in an oven at 110°C for 8 hours. After the temperature drops to room temperature, the pretreated hexagonal boron nitride is obtained. Boron powder, spare.

[0051] Place the pretreated hexagonal boron nitride powder in 5% aminosiloxane ethanol...

Embodiment 2

[0060] A preparation method of water-based epoxy anticorrosion coating in the medium environment of the inner wall of an oil storage tank, comprising the following steps:

[0061] Step 1, modification of hexagonal boron nitride powder

[0062] The hexagonal boron nitride powder was fully dried in an oven at 110°C for 8 hours, and the temperature dropped to room temperature before use.

[0063] 3 parts by weight of the treated hexagonal boron nitride powder and 100 parts by weight of a 50% carbonamide ethanol solution were stirred at 80° C. for 24 hours at high speed, and cooled naturally to room temperature. Put the treatment solution in a centrifuge, centrifuge the treated hexagonal boron nitride, wash it several times, and dry it in an oven at 110°C for 8 hours. After the temperature drops to room temperature, the pretreated hexagonal boron nitride is obtained. Boron powder, spare.

[0064] Place the pretreated hexagonal boron nitride powder in 5% aminosiloxane ethanol sol...

Embodiment 3

[0072] A kind of preparation method of water-based epoxy anticorrosion coating under the medium environment of the inner wall of petroleum storage tank, comprises the following steps:

[0073] Step 1, modification of hexagonal boron nitride powder

[0074] The hexagonal boron nitride powder was fully dried in an oven at 110°C for 8 hours, and the temperature dropped to room temperature before use.

[0075] 2 parts by weight of the treated hexagonal boron nitride powder and 100 parts by weight of a 50% carbonamide ethanol solution were stirred at 80° C. for 24 hours at high speed, and then naturally cooled to room temperature. Put the treatment solution in a centrifuge, centrifuge the treated hexagonal boron nitride, wash it several times, and dry it in an oven at 110°C for 8 hours. After the temperature drops to room temperature, the pretreated hexagonal boron nitride is obtained. Boron powder, spare.

[0076] Place the pretreated hexagonal boron nitride powder in 5% aminosi...

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Abstract

The invention discloses a waterborne epoxy anticorrosive coating for the inner wall of a petroleum storage tank in a medium environment and a preparation method of the waterborne epoxy anticorrosive coating, and belongs to the technical field of petrochemical engineering protection. The coating comprises a component A and a component B; the component A is prepared from the following raw materials in parts by weight: 8 to 13 parts of deionized water, 0.5 to 1.5 parts of a wetting dispersant, 0.1 to 0.3 part of a defoaming agent, 0.1 to 0.5 part of an anti-settling agent, 5 to 10 parts of a pigment, 10 to 20 parts of precipitated barium sulfate, 50 to 60 parts of waterborne epoxy emulsion A, 3 to 5 parts of waterborne epoxy resin B, 3 to 5 parts of modified hexagonal boron nitride, 0.1 to 0.2 part of a defoaming agent, 0.1 to 0.3 part of a flatting agent, 0.1 to 0.3 part of a base material wetting agent, 1-3 parts of an anti-flash rust agent and 0.5-1 part of a thickening agent; the component B is prepared from the following raw materials in parts by weight: 20-35 parts of deionized water, 5-10 parts of propylene glycol butyl ether and 60-70 parts of a waterborne epoxy curing agent; and the mass ratio of the component A to the component B is (4-6):1. The coating disclosed by the invention has excellent hot water resistance, acid and alkali resistance and salt spray resistance, and can form a film at 0 DEG C, so that the use condition of the waterborne epoxy resin coating is improved.

Description

technical field [0001] The invention belongs to the technical field of petrochemical protection, and in particular relates to a water-based epoxy anticorrosion coating in the medium environment of the inner wall of a petroleum storage tank and a preparation method thereof. Background technique [0002] Storage tanks are the most common and important storage equipment in the petroleum field. The condition of storage tanks directly affects the safe production and operation of the entire storage and transportation system. Petroleum is a kind of natural energy, and it contains a large amount of S, Cl, inorganic salts, water and other corrosive media that will cause corrosion to the inner wall of the storage tank. In addition, in order to increase the exploitation of oil resources, a certain amount of additives will be added to it, which will further increase the content of sulfides and increase the corrosion rate of the inner wall. The corrosion of the inner wall of the storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/62C08G59/44
CPCC09D163/00C09D5/08C09D7/61C09D7/62C09D7/70C08G59/44C08K2201/011C08K2003/385C08K2003/3045C08L63/00C08K3/30C08K3/38C08K9/04C08K9/06C08K7/00
Inventor 刘虎冰刘翰锋张耿涛
Owner 洛阳双瑞防腐工程技术有限公司
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