Nano silicon dioxide/graphene/epoxy resin composite anticorrosive coating as well as preparation and application

A technology of nano-silica and epoxy resin, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of destroying the coating structure, destroying the anode energy consumption, external current, easy expansion, etc., to achieve the preparation method Simple, easy for large-scale industrial production, and the effect of enhancing heat resistance

Pending Publication Date: 2018-08-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional anti-corrosion coatings mainly adopt two protection methods: (1) use electrochemical principles to protect the cathode, but the disadvantages are damage to the anode and the need for energy-consuming external current
(2) Heavy-duty anti-corrosion coating technology usually uses organic zinc-rich or inorganic zinc-rich coatings, and also adds lead-based and chromium-based anti-corrosion coatings, but lead and chromium are heavy metals and are carcinogens
Zinc powder corrosion products are easy to expand and damage the coating structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) acetone and methyl ethyl ketone organic solvent with a mass ratio of 2:1 are configured into a mixed solvent;

[0029] 2) 0.1g of graphene, 5g of nano-silica, and 5g of acetylene carbon black are added to 80g of mixed solvent, and a high-speed disperser is used to disperse for 120min at 3000r / min to obtain a graphene-containing slurry;

[0030] 3) 40g of epoxy resin E-51, 1g of zinc phosphate antirust additive, 2g of high-carbon alcohol fatty acid ester compound of Hubei Xinrunde Chemical Co., Ltd., 1g of polymethylphenyl from Shandong Jiaying Chemical Technology Co., Ltd. The sodium tripolyphosphate of siloxane and 2g Suzhou Husheng Chemical Co., Ltd. joins in the graphene-containing slurry and stirs, and then adds the latent curing agent Y310 and 2230 types of 10g Dongguan Yuanbang Electronics Co., Ltd. (mass ratio 1:6), using a high-speed disperser to disperse at 3000r / min for 120min, and then standing and aging for 30min, the nano-graphene epoxy resin anti-corros...

Embodiment 2

[0034] 1) acetone, butanone and cyclohexanone with a mass ratio of 1:2:5 are configured into a mixed solvent;

[0035] 2) 0.5g of graphene, 8g of nano-silica and 6g of acetylene carbon black are added to 120g of mixed solvent, and a high-speed disperser is used to disperse for 100min at 4500r / min to obtain a graphene-containing slurry;

[0036] 3) Mix 50g of epoxy resin E-20, 2g of zinc naphthenate antirust additive, 3g of cationic emulsified silicone oil 557 from Guangzhou Feirui Chemical Co., Ltd., 2g of 1070 from Dongguan Mooneng Chemical Co., Ltd. and 6g of Shouguang Jinyu Add triethylhexyl phosphoric acid from Chemical Co., Ltd. to the graphene-containing slurry and stir evenly, and then add 20g of latent curing agent 2230 and 3100 from Dongguan Yuanbang Electronics Co., Ltd. (mass ratio is 2:3) , mixed with a high-speed disperser to disperse 100min at 5000r / min, and then leave it to stand for 30min to obtain a nano-graphene epoxy resin anti-corrosion coating (ie nano-sil...

Embodiment 3

[0040] 1) Toluene, acetone and xylene with a mass ratio of 5:3:1 are configured into a mixed solvent;

[0041] 2) Graphene 2g, nanometer silicon dioxide 10g and acetylene carbon black 10g are joined in 160g mixed solvent, adopt high-speed disperser to disperse 60min with 6000r / min, obtain the slurry containing graphene;

[0042] 3) 60g of bisphenol F type epoxy resin, 3g of zinc sulfate antirust additive, 5g of polydimethylsiloxane from Dongguan Tian'an Silicone Technology Co., Ltd., 4g of American Hemings Company 839 type and 10g of Haian, Jiangsu Province Petrochemical fatty acid polyethylene glycol ester PEG400DS is added to the graphene-containing slurry and stirred evenly, and then 30g of latent curing agent 3100 and Y130 of Dongguan Yuanbang Electronics Co., Ltd. are added (mass ratio is 3:7) , mixed with a high-speed disperser to disperse for 60min at 6000r / min, and then leave it to mature for 30min to obtain a nano-graphene epoxy resin anti-corrosion coating (ie nano-s...

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PUM

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Abstract

The invention belongs to the technical field of anticorrosive coating and discloses nano silicon dioxide/graphene/epoxy resin composite anticorrosive coating as well as preparation and application. The composite anticorrosive coating is prepared from the following components in parts by weight: 40 to 60 parts of epoxy resin, 0.1 to 2 parts of graphene, 5 to 10 parts of nano silicon dioxide, 5 to 10 parts of acetylene carbon black, 10 to 30 parts of curing agent, 1 to 5 parts of antirust additive, 1 to 5 parts of de-foaming agent, 1 to 5 parts of flatting agent, 2 to 10 parts of dispersant and80 to 160 parts of organic solvent. The composite anticorrosive coating disclosed by the invention has a very good anticorrosive effect and excellent comprehensive performance, is environmentally friendly and has high attachment; a preparation method is simple and industrialization is easy to realize; meanwhile, the nano silicon dioxide/graphene/epoxy resin composite anticorrosive coating has a relatively good application prospect in the field of ocean corrosion prevention.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a nano-silicon dioxide / graphene / epoxy resin composite anti-corrosion coating as well as its preparation method and application. Background technique [0002] Graphene is the first material composed of a single layer of atoms discovered by humans at the beginning of this century. It is composed of carbon atoms and sp 2 Its basic structure unit is the most stable benzene ring structure in organic materials, and its theoretical thickness is only 0.35nm, which is the thinnest and hardest two-dimensional material found so far. Graphene has excellent performance in optical, electrical, thermal and other mechanical strength, and its structure is very stable. Currently, there is a great deal of interest from both the scientific and industrial communities. With the further understanding of the structure and properties of graphene, it is found that graphene ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC08K3/04C08K3/36C08K2201/011C09D5/08C09D163/00C08K3/042C09D7/61
Inventor 涂伟萍陈君华
Owner SOUTH CHINA UNIV OF TECH
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