Ceramic-filled epoxy zinc-rich anticorrosive coating material and preparation method thereof

A technology of anti-corrosion coating and filling ring, which is applied in the direction of anti-corrosion coating, epoxy resin coating, coating, etc., and can solve the problems of affecting the bonding force of the upper coating and zinc-rich coating, the decrease of coating anti-corrosion performance, and the decrease of adhesion , to achieve the effect of reducing zinc oxide smoke, enhancing water resistance and corrosion resistance, and good electrical conductivity

Inactive Publication Date: 2019-04-19
浙江山力得新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zinc in epoxy zinc-rich coatings is a sacrificial anode, and its content in the coating is usually greater than 70%. More zinc salts are produced during cathodic protection, which affects the bonding force between the upper coating and the zinc-rich coating, resulting in a decrease in the anti-corrosion performance of the coating

Method used

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  • Ceramic-filled epoxy zinc-rich anticorrosive coating material and preparation method thereof
  • Ceramic-filled epoxy zinc-rich anticorrosive coating material and preparation method thereof
  • Ceramic-filled epoxy zinc-rich anticorrosive coating material and preparation method thereof

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preparation example Construction

[0032] The preparation method of the ZnO conductive ceramic powder is: analytically pure ZnO, Al 2 o 3 、TiO 2 , MgO according to the mass ratio of 1:0.3: (0.1-1): (0.1-0.8) after the proportion of ingredients, add appropriate distilled water and polyacrylic acid amine dispersant ball milling for 2 hours, then add an appropriate amount of PVA solution to granulate, and then press into The green body, after the green body is debinding, is placed in the air at 1250°C for sintering for 2 hours to obtain ZnO conductive ceramics, and finally the ceramics are crushed and ground into ceramic powder with a particle size of less than 20 μm.

[0033] The complexing agent is one or more of EDTA, CDTA, NTA, EGTA, preferably EDTA. The auxiliary agent includes 0.5-1 part of dispersant, 0.2-0.5 part of defoamer, 0.3-0.5 part of leveling agent, and the dispersant is one of BYK191, BYK190, BYK180 or BYK110 or multiple, the defoamer is one or more of polyoxypropylene glyceryl ether, polyoxypr...

Embodiment 1

[0039](1) Weigh 100kg of epoxy resin (SM6101) and put it into the reaction kettle, stir and heat to 80°C, add 5kg of phthalic anhydride, continue to stir, keep at 80°C for 15 minutes and cool down to obtain the modified phthalic acid epoxy resin;

[0040] (2) Weigh 100kgZnO, 30kgAl 2 o 3 , 10kgTiO 2 , 10kgMgO, add 5kg distilled water and 2kg polyacrylic acid amine dispersant ball milling for 2h, then add 1kgPVA solution to granulate, and then press into a green body, after the green body is degummed, put it in the air and sinter at 1250°C for 2h to get ZnO conductive ceramics, and finally Crush and grind ceramics into ceramic powder with particle size below 20μm;

[0041] (3) Add the above-mentioned ZnO conductive ceramic powder, 50kgEDTA, and 25kg ethylene glycol ether into the reaction kettle, heat to 70°C, continue to stir and keep warm for 5 hours, and then cool down;

[0042] (4) Weigh 15kg polyamide curing agent, 5kg BYK191, 2kg polyoxypropylene glyceryl ether, 3kg p...

Embodiment 2

[0044] (1) Weigh 100kg of epoxy resin (SM6101) and put it into a reaction kettle, stir and heat to 80°C, add 8kg of phthalic anhydride, continue to stir, keep warm at 80°C for 15 minutes and cool down to obtain phthalic acid modified epoxy resin;

[0045] (2) Weigh 110kgZnO, 33kgAl 2 o 3 , 11kgTiO 2 , 11kgMgO, add 5kg distilled water and 2kg polyacrylic acid amine dispersant ball milling for 2h, then add 1kgPVA solution to granulate, and then press into a green body, after the green body is degummed, put it in the air for sintering at 1250°C for 2h to get ZnO conductive ceramics, and finally Crush and grind ceramics into ceramic powder with particle size below 20μm;

[0046] (3) The ZnO conductive ceramic powder obtained in step (2) and 60kgEDTA and 25kg ethylene glycol ether are added to the reactor, heated to 75°C, and cooled after 8 hours of continuous stirring and heat preservation reaction;

[0047] (4) Weigh 15kg polyamide curing agent, 5kg BYK190, 2kg polyoxypropyle...

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Abstract

The invention discloses a ceramic-filled epoxy zinc-rich anticorrosive coating material. The coating material comprises, by weight, 10-20 parts of modified epoxy resin, 35-50 parts of zinc powder, 5-10 parts of a complexing agent, 15-30 parts of ZnO conductive ceramic powder, 1-2 parts of an assistant, 1.5-3 parts of a modified amine curing agent and 5-10 parts of an organic solvent; and the modified epoxy resin is phthalic acid-modified epoxy resin. The invention also provides a preparation method of the material. The preparation method can greatly reduce the use amount of the zinc powder inthe coating and significantly improve the mechanical strength, adhesion, corrosion resistance and weather resistance of a coating film, and also has the advantages of simplicity in preparation, low cost, and easiness in industrial mass production.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coating materials, more specifically, it relates to a ceramic-filled epoxy zinc-rich anti-corrosion coating material and a preparation method thereof. Background technique [0002] Metal corrosion is a spontaneous process that has always brought serious losses to human production and life, even catastrophic accidents. Corrosion is actually a great destruction and waste of natural resources. Damage or fracture of metal may not only cause leakage of harmful substances, but also cause environmental pollution. In addition, if corrosion damage occurs in a certain key part and is not paid attention to in time, it may cause sudden catastrophic accidents, endanger the safety of daily life, and bring great losses and harm to the national economy. This is especially true in metal anti-seismic materials. [0003] Corrosion is one of the key factors for the failure of metal anti-seismic materials in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10
CPCC08K2003/0893C08K2003/222C08K2003/2227C08K2003/2241C08K2003/2296C09D5/106C09D163/00C08K3/22C08K3/08
Inventor 周敏乐周翔蒲后均张吕龙吴伟伟吴成威倪金星杨加娟胡骏骑殷光勤苏甜傅维龙
Owner 浙江山力得新材料科技有限公司
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