CN102002318A - Scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating and preparation method thereof - Google Patents
Scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating and preparation method thereof Download PDFInfo
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Abstract
The invention relates to scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating and a preparation method thereof. The method comprises the following steps of: (1) mixing scaly zinc powder with initial film forming resin according to the weight ratio of components to obtain a component A; (2) mixing a hydrolyzing silicon solution with a modifier by stirring at intermediate speed according to the weight ratio of the components, adding a catalyst for hydrolyzing according to the weight ratio of the components and hydrolyzing to obtain a component B; and (3) mixing the component A and the component B which are prepared in the step (1) and the step (2) according to the component weight ratio of (1-1.5):1 to obtain the scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating. The invention has the advantage of preparing the scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating by mainly adopting domestic scaly zinc powder. Compared with traditional zinc rich primer, the invention can greatly reduce the zinc powder content and coating thickness; the traditional zinc rich primer generates large zinc fog in the coating welding process, and the scaly zinc powder primer generates less zinc fog, reduces damage to construction staffs and is a new generation product of the traditional inorganic and organic zinc rich primer.
Description
Technical field
The present invention relates to the fine chemistry industry technical field of coatings, a kind of specifically flakey zinc-base inorganic zinc silicate heavy duty system and preparation method.
Background technology
Zinc-rich paint is one of priming paint commonly used in present China heavy duty system system, and two kinds of shop primer and rust-proofing primers are arranged.Their protection against corrosion principle is, sacrifices zinc powder and protect iron and steel in corrosive environment, and to damage or scratch also be like this even if coatingsurface has.Therefore, desire to make the effect of conduction performance sacrificial anode of filming, just require in filming to contain a large amount of zinc fine particles, they are in contact with one another, and and steel matrix also keep electrically contacting.The inhibition mechanism of zinc rich primer is similar to the continuous electric plated film, and American SS PC paints regulation, and zinc content is at least 77% of dry film weight in No. 201 organic zinc rich paints, and is German then require to account at least 85.4% weight that total solids divides.Yet if zinc content is too high in the coating, coating is porous just easily, causes that horizontal copolymerization destroys layering, on the zinc rich primer if apply other high-solid level finish paints again, just the tendency that can make finish paint generate bubble increases.Zinc is a heavy metal species, when producing and prepare coating, disperses comparatively difficulty, precipitation and knot cake easily take place during storage, though can adopt zinc powder to divide packing to solve, when using, still be easy to precipitation, need constantly to stir the same of zinc content and formulating of recipe in the paint film that could guarantee formation.If strengthen the corrosion protection ability of coating and thicken and film, just can make coating in drying process, produce contraction, thereby be prone to the tendency of crackle, this is particularly evident in inorganic zinc coating, and corrosion protection result is obviously reduced.
Summary of the invention
The objective of the invention is to develop that a kind of zinc powder consumption is few, snappiness, shock resistance, construction adaptability be strong, flakey zinc-base inorganic zinc silicate heavy duty system and preparation method that salt spray corrosion resistance is good.
A kind of flakey zinc-base inorganic zinc silicate heavy duty system, for component A and B component with 1-1.5: 1 weight ratio mixes;
Described component A, its weight percentages of components is as follows:
Solvent 30-50
Anti-settling agent 202P (polyethylene wax) 2-6
Resins, epoxy E44 or polyvinyl butyral acetal (S) 1.6-5
Zinc flake 40-60
Described B component, its weight percentages of components is as follows:
Solvent 30-45
Resin 40-65
Catalyzer 1-15
A kind of preparation method of flakey zinc-base inorganic zinc silicate heavy duty system, its step is as follows:
(1) according to components by weight with flake zinc powder, initial stage film-forming resin mixed component A;
(2) according to components by weight hydrolysis silicon solution, properties-correcting agent are mixed under middling speed stirs, add the catalyzer hydrolysis according to components by weight again, make component B after the hydrolysis;
(3) component A that step (1), step (2) are made and component B are according to components by weight (1～1.5: 1) mix (after two components put into, hydrochloric acid and zinc reaction generated a small amount of zinc chloride).
Component A solvent is dehydrated alcohol, ethylene glycol, dimethylbenzene, and their adding proportion is:
If use a kind of: add by weight percentages of components;
If use two kinds: dehydrated alcohol: ethylene glycol is 4-5: 3-5, ethylene glycol: dimethylbenzene is 3-5: 2-3, dehydrated alcohol: dimethylbenzene is 4-5: 2-3;
If use three kinds: dehydrated alcohol: ethylene glycol: dimethylbenzene is 4-5: 4-5: 2-3
The B component solvent is a dehydrated alcohol: Virahol.
If use a kind of: add by weight percentages of components;
If use two kinds: dehydrated alcohol: Virahol is 4-5: 3-4;
The B component resin is a tetraethoxy, methyl acid Ethoxysilane, r (2.3 epoxypropyl) propyl trimethoxy silicane.
If use a kind of: add by weight percentages of components;
If use two kinds: tetraethoxy: the methyl acid Ethoxysilane is 27: 2, and tetraethoxy: r (2.3 epoxypropyl) propyl trimethoxy silicane is 27: 1; Methyl acid Ethoxysilane: r (2.3 epoxypropyl) propyl trimethoxy silicane is 2: 1;
If use three kinds: tetraethoxy: methyl acid Ethoxysilane: r (2.3 epoxypropyl) propyl trimethoxy silicane is 27: 2: 1;
Catalyzer is 92% deionized water, 3% hydrochloric acid, 5% zinc chloride mixed dissolution.
A kind of flakey zinc-base of the present invention inorganic zinc silicate heavy duty system and preparation method's advantage is:
(1) compare with common zinc rich primer, the required minimum cover thickness of the flake zinc primer powder among the present invention can be less than the thickness of spherical zinc powder priming paint;
(2) compare with common zinc rich primer, the present invention can guarantee enough big electrical-contact area, makes the scope of acceptable PVC, CPVC wideer, so both can provide enough galvanic protections, can keep higher copolymerization cohesive force again;
(3) compare with common zinc rich primer, the present invention has better resistance to settling, and the ununiformity of zinc content in the priming paint is significantly reduced; Simultaneously, because scale zinc parallel folded array in filming, zinc metal sheet not only plays the effect of sacrificial anode in filming, but also plays shielding effect, has significantly reduced the infiltration in filming of water, ion, thereby strengthens the corrosion-resisting function of coating;
The present invention is mixed with flakey zinc-base inorganic zinc silicate heavy duty system based on homemade scale zinc powder.Compare with common zinc rich primer, it can reduce many on zinc content and coat-thickness, and the zinc mist that common zinc rich primer produces in band lacquer welding process is very big, and the zinc mist that the flake zinc primer powder produces is very little, and workmen's harm is reduced; It is the renewal product of common inorganic and organic zinc-rich primer.
Description of drawings
Fig. 1 is the flake zinc powder sem photograph.
Fig. 2 is the corrosion-resistant mechanism figure of flake zinc coating.
Embodiment
Embodiment one
According to Fig. 1, shown in Figure 2, a kind of flakey zinc-base inorganic zinc silicate heavy duty system, its preparation methods steps is as follows:
(1) preparation component A is standby
1. dehydrated alcohol 12kg is put into container and stir, put into 5kg Resins, epoxy E44, make it to dissolve standby;
2. ethylene glycol 12kg, dimethylbenzene 6kg are put into container and stir, put into 6kg 202P (polyethylene wax), make it to disperse standby;
3. will dissolve standby 1., 2. being blended in the container, again 59kg zinc powder (sheet) be made it abundant dispersion slow the adding, scattered back airtight package;
(2) the preparation B component is standby
With 60kg tetraethoxy, 2.5kg Union carbide A-162,2.5kg r (2,3-epoxy third oxygen) propyl trimethoxy silicane, 10kg Virahol, 20kg dehydrated alcohol are put into reactor and are stirred, be warmed up to 60 ℃, slowly Dropwise 5 kg (pact) acidified water (zinc chloride 0.5kg, hydrochloric acid 0.15kg, deionized water 4kg) drips the back 60-68 ℃ of reaction 1 hour; Cooling, airtight package are placed after 24 hours and could be used;
(3) the B component that obtains of A component that step (1) is obtained and step (2) forms according to 1: 1 weight ratio hybrid reaction.
Acidified water in the described step (2) is that 92% deionized water, 3% hydrochloric acid, 5% zinc chloride mixed dissolution are standby.
Embodiment two:
(1) preparation component A is standby
1. dehydrated alcohol 16kg is put into container and stir, put into the 3kg polyvinyl butyral acetal, make it to dissolve standby;
2. 7 glycol 16kg, dimethylbenzene 8kg are put into container and stir, put into 4kg 202P (polyethylene wax), make it to disperse standby;
3. will dissolve standby 1., 2. being blended in the container, again 53kg zinc powder (sheet) be made it abundant dispersion slow the adding, scattered back airtight package;
(2) the preparation B component is standby
With 50kg tetraethoxy, 3kg r (2,3-epoxy third oxygen) propyl trimethoxy silicane, 12kg Virahol, 25kg dehydrated alcohol are put into reactor and are stirred, be warmed up to 60 ℃, slowly drip 10kg (pact) acidified water (zinc chloride 0.5kg, hydrochloric acid 0.3kg, deionized water 9.2kg), drip the back 60-68 ℃ of reaction 1 hour; Cooling, airtight package are placed after 24 hours and could be used;
(3) the B component that obtains of A component that step (1) is obtained and step (2) forms according to 1.2: 1 weight ratio hybrid reaction.
Embodiment three
(1) preparation component A is standby
1. dehydrated alcohol 20kg is put into container and stir, put into 1.6kg Resins, epoxy E44, make it to dissolve standby;
2. ethylene glycol 20kg, dimethylbenzene 10kg are put into container and stir, put into 2kg 202P (polyethylene wax), make it to disperse standby;
3. will dissolve standby 1., 2. being blended in the container, again 46.4kg zinc powder (sheet) be made it abundant dispersion slow the adding, scattered back airtight package;
(2) the preparation B component is standby
37.8kg tetraethoxy, 2.2kg Union carbide A-162,17kg Virahol, 28kg dehydrated alcohol are put into reactor and stirred, be warmed up to 60 ℃, slowly drip 15kg (pact) acidified water (zinc chloride 0.75kg, hydrochloric acid 0.45kg, deionized water 13.8kg), drip the back 60-68 ℃ of reaction 1 hour; Cooling, airtight package are placed after 24 hours and could be used;
(3) the B component that obtains of A component that step (1) is obtained and step (2) forms according to 1.5: 1 weight ratio hybrid reaction.
Acidified water in the described step (2) is that 92% deionized water, 3% hydrochloric acid, 5% zinc chloride mixed dissolution are standby.
Except that above embodiment, can form a plurality of embodiment according to the component different ratios.
A kind of flakey zinc-base inorganic zinc silicate heavy duty system, its using method is as follows:
1. steel part oil removing, rust cleaning (preferably sandblasting);
2. paint: the A component stirred, and (A: B=1: 1), stir, slaking can be brushed in 30 minutes to going into the B component again; Attention: A, B mix in back 4 hours and use;
3. japanning: Airless spraying (best), have gas blowout to be coated with (water-and-oil separator will be arranged), to brush, thickness 20-30um;
4. maintenance: need 10-20 sky gas-solidization (preferably malaria) behind the dried coating film.
Solidify check: be stained with a methylethylketone (butanone) with absorbent cotton and put film coated surface on the skin and do not have zinc to put curing of coating on the skin good.
The key technical indexes contrast:
The inorganic IC-531 of salient features flakey zinc-base is spherical homemade spherical
Zinc silicate heavy duty system inorganic zinc coating inorganic zinc coating
Coat-thickness 30um 80um 80um
Sticking power (cross-hatching) level 0 0-1 0-1
Salt spray resistance/h 10,000 5000 1000-3000
Shock resistance/kg 50 30 40
Water tolerance/h 10,000 5,000 3000
Anti-gasoline/h 10,000 5,000 3000
Solvent-resistant dimethylbenzene/h 10,000 5,000 3000
Thermotolerance/℃ 400 400 400
This index only is the performance comparison of zinc flake and spherical zinc powder
Claims (6)
1. flakey zinc-base inorganic zinc silicate heavy duty system is characterized in that: for component A and B component with 1-1.5: 1 weight ratio mixes;
Described component A, its weight percentages of components is as follows:
Solvent 30-50
Anti-settling agent 202P 2-6
Resins, epoxy E44 or polyvinyl butyral acetal 1.6-5
Zinc flake 40-60
Described B component, its weight percentages of components is as follows:
Solvent 30-45
Resin 40-65
Catalyzer 1-15
2. a kind of flakey zinc-base inorganic zinc silicate heavy duty system according to claim 1 is characterized in that:
Component A solvent is dehydrated alcohol, ethylene glycol, dimethylbenzene, and their adding proportion is:
If use a kind of: add by weight percentages of components;
If use two kinds: dehydrated alcohol: ethylene glycol is 4-5: 3-5, ethylene glycol: dimethylbenzene is 3-5: 2-3, dehydrated alcohol: dimethylbenzene is 4-5: 2-3;
If use three kinds: dehydrated alcohol: ethylene glycol: dimethylbenzene is 4-5: 4-5: 2-3
3. a kind of flakey zinc-base inorganic zinc silicate heavy duty system according to claim 1 is characterized in that:
The B component solvent is: dehydrated alcohol: Virahol
If use a kind of: add by weight percentages of components;
If use two kinds: dehydrated alcohol: Virahol is 4-5: 3-4;
4. a kind of flakey zinc-base inorganic zinc silicate heavy duty system according to claim 1 is characterized in that:
The B component resin is a tetraethoxy, methyl acid Ethoxysilane, r propyl trimethoxy silicane;
If use a kind of: add by weight percentages of components;
If use two kinds: tetraethoxy: the methyl acid Ethoxysilane is 27: 2; Tetraethoxy: the r propyl trimethoxy silicane is 27: 1; The methyl acid Ethoxysilane: the r propyl trimethoxy silicane is 2: 1;
If use three kinds: tetraethoxy: methyl acid Ethoxysilane: the r propyl trimethoxy silicane is 27: 2: 1.
5. a kind of flakey zinc-base inorganic zinc silicate heavy duty system according to claim 1 is characterized in that:
Catalyzer is for being 92% deionized water, 3% hydrochloric acid, 5% zinc chloride mixed dissolution.
6. the preparation method of a flakey zinc-base inorganic zinc silicate heavy duty system according to claim 1, it is characterized in that: its step is as follows:
(1) according to components by weight with flake zinc powder, initial stage film-forming resin mixed component A;
(2) according to components by weight hydrolysis silicon solution, properties-correcting agent are mixed under middling speed stirs, add the catalyzer hydrolysis according to components by weight again, make component B after the hydrolysis;
(3) component A that step (1), step (2) are made and component B are according to components by weight 1-1.5: 1 mixes, and after two components were put into, hydrochloric acid and zinc reaction generated a small amount of zinc chloride.
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| CN 201010517302 CN102002318A (en) | 2010-10-25 | 2010-10-25 | Scaly zinc-based inorganic zinc silicate heavy anti-corrosion coating and preparation method thereof |
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| CN103087563A (en) * | 2012-11-27 | 2013-05-08 | 上海振华重工（集团）常州油漆有限公司 | Zinc silicate shop primer as well as preparation method and construction method thereof |
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| CN108165107A (en) * | 2018-02-13 | 2018-06-15 | 重庆三峡油漆股份有限公司 | Energy saving and environment friendly zinc-rich coating |
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| CN104603213B (en) * | 2012-08-29 | 2019-02-19 | 赫普有限公司 | Anticorrosion yellow zinc chromate primer paint coating composition comprising hollow glass ball and conducting pigment |
| CN104603213A (en) * | 2012-08-29 | 2015-05-06 | 赫普有限公司 | Anti-corrosive zinc primer coating compositions comprising hollow glass spheres|and a conductive pigment |
| US10214818B2 (en) | 2012-08-29 | 2019-02-26 | Hempel A/S | Anti-corrosive zinc primer coating compositions comprising hollow glass spheres and a conductive pigment |
| CN103087563A (en) * | 2012-11-27 | 2013-05-08 | 上海振华重工（集团）常州油漆有限公司 | Zinc silicate shop primer as well as preparation method and construction method thereof |
| CN103087563B (en) * | 2012-11-27 | 2015-08-05 | 上海振华重工（集团）常州油漆有限公司 | A kind of primer for zinc silicate shop and preparation method thereof and constructional method |
| CN102977770A (en) * | 2012-11-30 | 2013-03-20 | 无锡市虎皇漆业有限公司 | Organic modified polysilicate and preparation method thereof |
| CN102977770B (en) * | 2012-11-30 | 2016-09-14 | 无锡市虎皇漆业有限公司 | A kind of organically-modified polysilicates and preparation method thereof |
| CN103146234A (en) * | 2013-04-15 | 2013-06-12 | 重庆三峡油漆股份有限公司 | Inorganic zinc-rich antirust skid-resistant coating |
| CN103627295A (en) * | 2013-09-30 | 2014-03-12 | 厦门双瑞船舶涂料有限公司 | Preparation method and filling technology of single-component shop primer |
| CN103627295B (en) * | 2013-09-30 | 2016-06-15 | 厦门双瑞船舶涂料有限公司 | The preparation method of a kind of one pack system shop primer and filling process |
| CN103602104A (en) * | 2013-11-15 | 2014-02-26 | 中国海洋石油总公司 | Inorganic zinc-rich paint for passive nuclear power station |
| CN105505038A (en) * | 2015-12-28 | 2016-04-20 | 东莞市永强汽车制造有限公司 | Static-conducting corrosion-resistant paint and coated film, spraying technique thereof, and tank |
| CN105505038B (en) * | 2015-12-28 | 2018-05-08 | 东莞市永强汽车制造有限公司 | A kind of static electricity conductive anticorrosive paint, film and its spraying coating process and tank body |
| CN108165107A (en) * | 2018-02-13 | 2018-06-15 | 重庆三峡油漆股份有限公司 | Energy saving and environment friendly zinc-rich coating |
| CN108165107B (en) * | 2018-02-13 | 2020-01-24 | 重庆三峡油漆股份有限公司 | Energy-saving environment-friendly inorganic zinc-rich primer |
| CN110183882A (en) * | 2019-06-13 | 2019-08-30 | 厦门双瑞船舶涂料有限公司 | A kind of hydrophobicity ethanol-soluble type inorganic primer for zinc silicate shop and preparation method thereof |
| CN110804388A (en) * | 2019-10-11 | 2020-02-18 | 中航百慕新材料技术工程股份有限公司 | Inorganic alkene zinc coating and preparation method and application thereof |
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Application publication date: 20110406 |