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Solvent-free epoxy coating for inner wall of petroleum storage tank and preparation method

A technology for epoxy coatings and petroleum storage tanks, applied in epoxy coatings, anti-corrosion coatings, coatings, etc., to achieve the effects of reducing corrosion, excellent workability, safety and environmental protection, and improving service life

Active Publication Date: 2012-03-21
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ensure the service life of the storage tank and solve the safety and environmental protection problems of solvent-based anti-corrosion coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1: solvent-free epoxy paint, each component weight percent is:

[0087] Liquid A:

[0088] E-51 epoxy resin: 51.5%;

[0089] Butyl glycidyl ether: 5.5%;

[0090] KH-560 silane coupling agent 0.28%;

[0091] ALCOPHOR827 anti-corrosion additive 0.9%;

[0092] BYK-085 leveling agent 0.08%;

[0093] Efka-722 defoamer 0.6%;

[0094] Rutile titanium dioxide (400 mesh): 7.5%;

[0095] Barite powder (325 mesh): 16.5%;

[0096] Talc powder (400 mesh): 16.5%;

[0097] Carbon black: 0.50%;

[0098] 881-B organic bentonite: 0.14%.

[0099] Liquid B:

[0100] Polyamide EU8235 epoxy curing agent: 81%;

[0101] Xylene: 12%;

[0102] n-Butanol: 7%.

[0103] The weight percentage of liquid A in the coating is 82%.

[0104] The preparation method is:

[0105] Add E-51 epoxy resin and butyl glycidyl ether into the container in proportion, stir and mix evenly, then add KH-560 silane coupling agent, ALCOPHOR827 anti-corrosion additive, BYK-085 leveling agent, Efka...

Embodiment 2

[0107] Embodiment 2: solvent-free epoxy paint, each component weight percent is:

[0108] Liquid A:

[0109] E-51 epoxy resin: 53.5%;

[0110] Butyl glycidyl ether: 5.6%;

[0111] KH-560 silane coupling agent 0.32%;

[0112] ALCOPHOR827 anti-corrosion additive 1.1%;

[0113] BYK-085 leveling agent 0.1%;

[0114] Efka-722 defoamer 0.5%;

[0115] Rutile titanium dioxide (400 mesh): 6%;

[0116] Barite powder (325 mesh): 16%;

[0117] Talc powder (400 mesh): 16%;

[0118] Carbon black: 0.28%;

[0119] 881-B organic bentonite: 0.6%.

[0120] Liquid B:

[0121] Polyamide EU8235 epoxy curing agent: 80%;

[0122] Xylene: 13.5%;

[0123] n-Butanol: 6.5%.

[0124] The weight percentage of liquid A in the coating is 84%.

[0125] Embodiment 2 The preparation method of the solvent-free epoxy coating is the same as that of Embodiment 1.

[0126] Effect: The volume shrinkage rate of the coating is 1.22%, the adhesion force of the pull-off method is 17.9MPa, and the chemical ...

Embodiment 3

[0127] Embodiment 3: solvent-free epoxy paint, each component weight percentage is:

[0128] Liquid A:

[0129] E-51 epoxy resin: 47.5%;

[0130] Butyl glycidyl ether: 6.5%;

[0131] KH-560 silane coupling agent 0.34%;

[0132] ALCOPHOR827 anti-corrosion additive 1.2%;

[0133] BYK-085 leveling agent 0.16%;

[0134] Efka-722 defoamer 0.9%;

[0135] Rutile titanium dioxide (400 mesh): 8%;

[0136] Barite powder (325 mesh): 16.5%;

[0137] Talc powder (400 mesh): 18%;

[0138] Carbon black: 0.2%;

[0139] 881-B organic bentonite: 0.7%.

[0140] Liquid B:

[0141] Polyamide EU8235 epoxy curing agent: 83%;

[0142] Xylene: 11.5%;

[0143] n-Butanol: 5.5%.

[0144] The weight percentage of liquid A in the coating is 81%.

[0145] Embodiment 3 The preparation method of the solvent-free epoxy coating is the same as that of Embodiment 1.

[0146] Effect: The volume shrinkage rate of the coating is 1.14%, the adhesion force of the pull-off method is 19.8MPa, and the chem...

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Abstract

The invention relates to a solvent-free epoxy coating for the inner wall of a petroleum storage tank and a preparation method. Solution A comprises E-51 epoxy resin, butyl glycidyl ether, KH-560 silane coupling agent, ALCOPHOR827 anti-corrosion auxiliary agent, BYK-085 flatting agent, Efka-722 defoamer, 400 mesh rutile type titanium white, 325 mesh baryte powder, 400 mesh talcum powder, carbon black and 881-B organic bentonite. Solution B comprises polyamide EU8235 epoxy hardener, dimethylbenzene and normal butanol. The weight percent of the solution A is 80% to 90%. The solvent-free epoxy coating is safe and environment friendly, the coating volume shrinkage is 1.15% to 1.5%, the pull-off adhesion is 16.5MPa to 20.0MPa, a chemical media resistance 90d paint film is in good condition, anda salt spray resistance 3000h paint film is in good condition. With the adoption of the solvent-free epoxy coating, corrosion of the storage tank can be greatly reduced, and the service life of the storage tank can be greatly prolonged.

Description

technical field [0001] The invention relates to a solvent-free epoxy coating and a manufacturing method, which are suitable for anticorrosion of the inner wall of petroleum storage tanks. Background technique [0002] The existing anti-corrosion of the inner wall of oil storage tanks mostly uses solvent-based anti-corrosion coatings (volume shrinkage rate of 2% to 3%). The anti-corrosion performance cannot be effectively guaranteed; on the other hand, it will cause environmental pollution and waste of resources, and it will be highly toxic to the workers; in addition, there is a risk of flash explosion during construction in a closed environment of the storage tank. Contents of the invention [0003] The purpose of this invention is to provide a kind of solvent-free epoxy coating and manufacture method. The coating has excellent constructability, safety and environmental protection, and the coating has small volume shrinkage and excellent anti-corrosion performance. Ensu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 王志涛韩文礼林竹范云鹏张盈盈周冰
Owner BC P INC CHINA NAT PETROLEUM CORP
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