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A kind of anti-flash rust waterborne acrylic iron red antirust primer and preparation method thereof

A technology of acrylic iron red and anti-rust primer, applied in anti-corrosion coatings, biocide-containing paints, anti-fouling/underwater coatings, etc., can solve the cracked metal corrosion of paint film, the expansion of corrosion of metal workpieces, and the flash rust of metal workpieces and other problems, to achieve the effect of inhibiting corrosion, inhibiting redissolution, and excellent anti-flash rust performance

Active Publication Date: 2016-06-29
上海福岛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

[0003] The water-based acrylic iron red antirust primer has a certain chemical activity and higher electrical conductivity than ordinary oil-based paints due to the carrier water. In addition, electrolytes, surfactants and other components will be introduced during the resin synthesis and paint making process, which makes the coating dry. Flash corrosion of metals (especially cast iron and alloys) in an electrochemical corrosion environment before penetrating, causing corrosion expansion of metal workpieces during service, resulting in cracking of paint film and metal corrosion
In the early days, high-efficiency anti-flash rust agents such as sodium nitrite and chromate were mainly added in the paint making stage to inhibit flash rust, but sodium nitrite and chromate are internationally recognized carcinogens, and many developed countries have restricted their use
Many waterborne acrylic antirust primers today use other flash corrosion inhibitors instead of sodium nitrite and chromate, but the metal workpieces have different degrees of flash rust during the coating process

Method used

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  • A kind of anti-flash rust waterborne acrylic iron red antirust primer and preparation method thereof
  • A kind of anti-flash rust waterborne acrylic iron red antirust primer and preparation method thereof
  • A kind of anti-flash rust waterborne acrylic iron red antirust primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of anti-flash rust waterborne acrylic iron red antirust primer, wherein each component and mass percentage are as follows:

[0028] Acrylic emulsion (DSMXK-86) 60%, water 11%, additive 1 0.7% (including wetting and dispersing agent 0.35%, bactericide 0.2%, defoamer 0.15%), additive 2 0.8% (including defoamer 0.1%, thickener 0.17%, substrate wetting agent 0.15%, leveling agent 0.3%, PH regulator 0.08%), flash corrosion inhibitor 0.5%, film-forming agent 4.5% (dipropylene glycol monoethyl ether 2.25%, Dodecyl alcohol ester 2.25%), iron oxide red 6.7%, anti-rust pigment ( ZCP PLUS , a zinc silicate orthophosphate hydrate containing calcium, strontium, aluminum) 8%, filler 7.8%;

[0029] Among them, the filler formula is: precipitated barium sulfate 30%, silicon micropowder 15%, talc powder 20%, gray mica 20%, kaolin 10%, hydrated magnesium aluminum silicate 2%, montmorillonite 3%.

[0030] The preparation method of above-mentioned antirust primer is as follows: ...

Embodiment 2

[0035] A kind of anti-flash rust waterborne acrylic iron red antirust primer, wherein each component and mass percentage are as follows:

[0036] Acrylic emulsion (DSMXK-86) 55%, water 12%, additive 1 0.8% (including wetting and dispersing agent 0.45%, bactericide 0.2%, defoamer 0.15%), additive 2 0.8% (including defoamer 0.1%, thickener 0.17%, substrate wetting agent 0.15%, leveling agent 0.3%, PH regulator 0.08%), flash corrosion inhibitor 0.3%, film-forming agent 4.5% (dipropylene glycol monoethyl ether 2.25%, Dodecyl alcohol ester 2.25%), iron oxide red 7.6%, anti-rust pigment ( ZCP PLUS ) 8%, filler 11%;

[0037] Among them, the filler formula is: precipitated barium sulfate 30%, silica powder 7%, talc powder 25%, gray mica 25%, kaolin 10%, montmorillonite 3%.

[0038] The preparation method of above-mentioned antirust primer is as follows:

[0039] (1) Preparation of flash corrosion inhibitor: Mix 40 parts of sebacic acid and 30 parts of boric acid, heat to 65°C and...

Embodiment 3

[0043] A kind of anti-flash rust waterborne acrylic iron red antirust primer, wherein each component and mass percentage are as follows:

[0044] Acrylic emulsion (DSMXK-86) 45%, water 16%, additive 1.0% (including wetting and dispersing agent 0.65%, bactericide 0.2%, defoamer 0.15%), additive 2 0.8% (including defoamer 0.2%, thickener 0.32%, substrate wetting agent 0.20%, PH regulator 0.08%), flash corrosion inhibitor 0.4%, film-forming agent 3.5% (dipropylene glycol monoethyl ether 1.75%, lauryl alcohol ester 1.75 %), iron oxide red 9.3%, anti-rust pigment 8%, filler 16%;

[0045] The filler formula is: precipitated barium sulfate 30%, silica powder 30%, gray mica 20%, kaolin 18%, montmorillonite 2%.

[0046] The preparation method of above-mentioned antirust primer is as follows:

[0047] (1) Preparation of flash corrosion inhibitor: Mix 20 parts of tannic acid and 15 parts of boric acid, heat to 80°C, stir, melt and mix for 5 minutes, then add 15 parts of thiourea, 10 pa...

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Abstract

The invention discloses an anti-flash-rust water-based acrylic acid iron red antirust priming paint and a preparation method thereof. The antirust priming paint comprises 35 to 60% of an acrylic acid emulsion, 10 to 20% of water, 0.3 to 1.5% of an auxiliary agent I containing a wetting dispersant, a bactericide and an antifoaming agent, 0.3 to 1.5% of an auxiliary agent II containing an antifoaming agent antifoaming agent, a thickening agent, a base material wetting agent, a leveling agent and a pH conditioning agent, 0.2 to 0.5% of a flash-rust inhibitor, 2.5 to 4.5% of a film formation aid, 6 to 10% of iron oxide red, 6 to 10% of an antirust pigment and 6 to 18% of a filling material. The preparation method comprises the following steps: heating organic acid to 55 to 80 DEG C for melting and mixing, then adding organic base, carrying out mixing with stirring, then heating the obtained mixture to 110 to 125 DEG C, carrying out a reaction for 0.5 to 3 h with the temperature maintained and then carrying out cooling so as to prepare the flash-rust inhibitor; dispersing water, the auxiliary agent I, iron oxide red, the antirust pigment and the filling material at a high speed of 6 to 15 m / s for 30 min and then carrying out grinding until D95 of slurry is less than 15 mu m; and successively adding the film formation aid, the slurry, the flash-rust inhibitor and the auxiliary agent II into the acrylic acid emulsion with stirring and carrying out stirring and filtering so as to obtain the antirust priming paint. The antirust priming paint is coated in the stage of drying of surfaces of iron, aluminum and copper and does not result in flash-rust of a metal substrate; and after drying, an obtained film has excellent antirust performance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and relates to an anti-flash rust water-based acrylic iron red anti-rust primer and a preparation method thereof. technical background [0002] Water-based acrylic iron red anti-rust primer, due to its low VOC (volatile organic compound) content, can be quickly dried within 60 °C and becomes hard. It is suitable for primary processing metal parts with high environmental protection requirements, fast coating speed requirements, and sea export. Road guardrails and other fields. Outside the field of heavy-duty anti-corrosion, water-based acrylic anti-rust primer and top coat can widely meet the anti-rust requirements of metal workpieces. [0003] The water-based acrylic iron red antirust primer has a certain chemical activity and higher electrical conductivity than ordinary oil-based paints due to the carrier water. In addition, electrolytes, surfactants and other components will be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D125/14C09D7/12C09D5/14C09D5/08
Inventor 宋铁成钟兴发戴金星宋传军
Owner 上海福岛新材料科技有限公司
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