CN103725120A - High corrosion resistant shop primer and preparation process thereof - Google Patents
High corrosion resistant shop primer and preparation process thereof Download PDFInfo
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- CN103725120A CN103725120A CN201310681913.XA CN201310681913A CN103725120A CN 103725120 A CN103725120 A CN 103725120A CN 201310681913 A CN201310681913 A CN 201310681913A CN 103725120 A CN103725120 A CN 103725120A
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Abstract
The invention discloses a high corrosion resistant shop primer which is compounded by a coating host crystal and a curing agent at a weight ratio of 2:1, wherein the host crystal comprises the following components in parts by weight: 20-30 parts of polyethylene acid butyraldehyde liquid, 0.5-1.0 part of white carbon black, 0.5-1.0 part of bentonite GBP-183, 10-15 parts of titanium white powder NTR-606, 5-10 parts of composite ferrophosphorus powder, 6-10 parts of 350-mesh quartz powder, 1-5 parts of industrial alcohol, 3-5 parts of xylene, 50-60 parts of zinc powder, and 1.5-2.0 parts of an anti-sag agent 3300 X; the curing agent comprises the following components in parts by weight: 25-45 parts of ethyl silicate, 5-10 parts of distilled water, 0.3-0.8 part of 2N hydrochloric acid, 30-50 parts of absolute ethyl alcohol, 1-10 parts of heavy aromatics P-4, 2-10 parts of glycol ether and 0.1-0.8 part of ferric trichloride. After the coating film is formed, the high corrosion resistant shop primer prepared with the method disclosed by the invention has excellent adhesive strength, thermostability and film quality, high weather resistance, excellent corrosion resistance, and low application cost.
Description
Technical field
The invention belongs to technical field of coatings, especially relate to shop primer and preparation technology thereof that a kind of erosion resistance is strong.
Background technology
Shop primer is the first paint of brushing after surface of steel plate is processed, and also can be called pre-treatment priming paint or maintenance priming paint, mainly for protection steel plate is subject to less atomospheric corrosion in the courses of processing such as welding, cutting, firer's correction.Shop primer is one of important kind of marine finish, and when China's shipbuilding and shipping-trade develop rapidly, the market of shop primer is very broad.Other also need the steel plate pre-treatment of machining large steel construction as bridge, oceanographic engineering etc. in addition, and they also have very large demand to shop primer.Successive dynasties product has zinc wash primer, epoxy zinc-rich paint, epoxy iron oxide red shop primer, inorganic primer for zinc silicate shop.Wherein inorganic zinc silicate primer is mainly to apply kind, mostly be that alcohol dissolubility is from consolidating type, generally formulated by coating host and solidifying agent, in host, mainly with zinc powder, be main rust-stabilising pigment, form zinc silicate, iron composite salt with solidifying agent hybrid reaction and close attachment in steel surface.After the effect of solidifying agent is oil paint coating, can continues hydrolytic polymerization and become caking agent, play bonding effect, what mostly adopt at present is that silicate hydrolyzate liquid is as the major ingredient of solidifying agent.Silicate hydrolyzate liquid is as filmogen, plays bonding effect, select suitable degree of hydrolysis after hydrolysate film forming good, just can there is excellent adhesion strength and high-temperature behavior.Therefore the selection of solidifying agent has great impact to the performance of shop primer.
At present, specification of quality for shop primer is: the approximately 20 μ left and right individual layer paint films that general requirement applies on steel plate, at its antirust ability in marine atmosphere or industrial atmosphere, at least should there be 3 months, there is good shock-resistant and toughness simultaneously, less and there is hypotoxicity in welding, cutting and firer's timing paint film heat-affected zone, especially should not produce too much harmful poison gas etc. during paint film decomposes.And at present poor heat stability in use often appears in shop primer on the market, weathering resistance is not enough, the phenomenon such as unstable after coating film forming, has affected the antiseptic property of coating greatly.Especially to oil carrier, in offshore oil platform, to the large-scale steel and iron member pre-treatment primary coat used time, above-mentioned situation is more common, and the antiseptic property of coating is poor very large to the infringement of steel construction piece.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of good weatherability, shop primer and preparation technology thereof that anticorrosion working life is long, use while being particularly useful in the environment such as oil carrier, offshore oil platform large-scale steel and iron member pre-treatment primary coat.
Content of the present invention is specially: a kind of highly corrosion resistant shop primer, and formulated by weight 2:1 ratio by coating host and solidifying agent, wherein count by weight host and formed by following component:
Wherein counting by weight solidifying agent is comprised of following component:
Wherein, above-mentioned tetraethyl silicate silicon content is 40 ± 2%.
The present invention also provides the preparation technology of above-mentioned shop primer liquid, wherein:
The preparation process of host is:
Grinding steps: by above-mentioned acid polyethylene butyraldehyde liquid, white carbon black, wilkinite GBP-183, titanium dioxide NTR-606, compound ferrophosphorus powder, silica powder 350 orders, industrial alcohol, dimethylbenzene mixed grinding, obtain grinding product;
Mediation step: add successively zinc powder, anti-sagging agent 3300X in grinding product, be uniformly dispersed through high speed shear, be deployed into host;
The preparation process of solidifying agent is:
Step 1: tetraethyl silicate-40, two kinds of reaction solutions of dehydrated alcohol are added in reactor successively, stir 5-10min and obtain mixed solution;
Step 2: distilled water, 2N hydrochloric acid, dehydrated alcohol are carried out to pre-mixing and evenly obtain mixing solutions and insert in Dropping feeder, mixing solutions is slowly added dropwise in the mixed solution in reactor.
Step 3: add successively heavy aromatics, dehydrated alcohol, ethylene glycol ethyl ether, iron trichloride in the reactor in step 2, stir, obtain curing agent solution.
By preparing gained host and curing agent solution, in 2:1 ratio, mix, obtain described highly corrosion resistant shop primer.
In above-mentioned solidifying agent preparation process, the mixing solutions in step 2 is controlled at and in 60min-90min, is at the uniform velocity added dropwise in reactor in mixed solution.
In above-mentioned solidifying agent preparation process, the churning time of step 1 and step 3 is controlled in 5-10min.
Further, in solidifying agent preparation process, in step 1, the addition of dehydrated alcohol is counted 5-10 part by weight; In step 2, the addition of dehydrated alcohol is counted 10-15 part by weight; The addition of step 3 dehydrated alcohol is counted 15-25 part by weight.
When coating host is mainly used for antiseptic and rustproof and high-temperature heating, form firm coating.In the preparation of host, acid polyethylene butyraldehyde liquid is membrane-forming agent, also makes moulding paint film have good toughness; Wilkinite GBP-183 and silica powder 350 orders are anti-settling agent; White carbon black is called again precipitated silica, is the toughner of welding iron and steel; Compound ferrophosphorus powder is a kind of heat-resisting and good rust-stabilising pigment of conductivity, can partly replace high zinc powder simultaneously, reduces the use of zinc powder, reduces costs; Titanium dioxide can reduce zinc powder atomization when welding; Industrial alcohol and dimethylbenzene are solvent, and adding of alcoholic solvent is in order to change the polarity of solvent, promote opening and disperseing of anti-settling agent, pigment, filler; Zinc powder is main rust protection material.
In the preparation of shop primer, silicate hydrolyzate liquid is as filmogen, plays bonding effect, only have select suitable degree of hydrolysis after hydrolysate film forming good, just can have excellent adhesion strength and high-temperature behavior, be also that the selection of solidifying agent in shop primer is huge to the performance impact of shop primer.
Solidifying agent preparation principle is under catalyst action, to allow the product of tetraethyl silicate hydrolytic polymerization formation in advance macromolecular chain, then after mixing with coating host, forms macromolecular reticulated structure, i.e. paint film coating.In the preparation technology of solidifying agent of the present invention, tetraethyl silicate is polymerization adhesives, and dehydrated alcohol and Virahol are thinners, and iron trichloride and 2N hydrochloric acid are catalyzer, promotes hydrolysis and the polymerization of tetraethyl silicate, and distilled water is for hydrolysis and the polyreaction of tetraethyl silicate; Heavy aromatics p-4 is the solvent as tetraethyl silicate, is the commercially available prod of Tianjin Tong Xuan chemical company.
In general solidifying agent preparation technology, be first hydrochloric acid, dehydrated alcohol, distilled water to be mixed and is added drop-wise in tetraethyl silicate, then add heavy aromatics, ethylene glycol ethyl ether, dehydrated alcohol, iron trichloride.The reaction of shop primer liquid is thermopositive reaction, and it is bad that reaction soln rate of addition is controlled, and can make reacted molecular size inhomogeneous, makes after coating film forming unstablely, affects antiseptic property.
In the present invention in the preparation process of solidifying agent, step 1 first joins dehydrated alcohol in tetraethyl silicate, because also there is dehydrated alcohol tetraethyl silicate the inside, make dropping solution in step 2 can be better with step 1 in reactor mixed solution merge, impel reaction to carry out smoothly, reacted molecular size is more uniform and stable.Meanwhile, the reaction of solidifying agent is thermopositive reaction, and the rate of addition of therefore controlling well is the key point of this technique, is also the key of controlling this product quality and stability.In the present invention, contriver gropes by long test, while finding the rate of addition in step 2 or time to be controlled at 60min-90min, can improve bulk of molecule uniformity coefficient after solidifying agent reaction; In solidifying agent preparation process, should control the amount of allocating into of iron trichloride, hydrochloric acid, distilled water, as measured, its reaction is incomplete not simultaneously, and coating can be dried slowly and maybe can not be dried; If excess preparation can make to react too fast, cause the coating paint film that solidifying agent self solidifies, solidifying agent sprays after coordinating with base-material to produce powder phenomenon-tion, lose coating rust protection function.
In addition, after the solidifying agent obtaining mixes with coating, accelerate speed of response through prehydrolysis and polymerization, selected again dehydrated alcohol that volatility is good as diluting solvent simultaneously, made coating can complete rapidly surface drying after spraying.
The shop primer that uses the inventive method to prepare, after coating film forming, there is excellent adhesion strength, resistance to elevated temperatures, film quality is good, weathering resistance is strong, antiseptic property is excellent, use cost is low, while being particularly useful in the environment such as oil carrier, offshore oil platform large-scale steel and iron member pre-treatment primary coat, uses.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but can not be as restriction of the present invention.
Embodiment 1:
A highly corrosion resistant shop primer, formulated by weight 2:1 ratio by coating host and solidifying agent, wherein host is comprised of following component:
Wherein by solidifying agent, by following component, formed:
Wherein, above-mentioned tetraethyl silicate silicon content is 40 ± 2%.
The preparation technology of above-mentioned shop primer liquid, wherein:
The preparation process of host is:
Grinding steps: by above-mentioned acid polyethylene butyraldehyde liquid, white carbon black, wilkinite GBP-183, titanium dioxide NTR-606, compound ferrophosphorus powder, silica powder 350 orders, industrial alcohol, dimethylbenzene mixed grinding, obtain grinding product;
Mediation step: add successively zinc powder, anti-sagging agent 3300X in grinding product, be uniformly dispersed through high speed shear, be deployed into host;
The preparation process of solidifying agent is:
Step 1: tetraethyl silicate-40, two kinds of reaction solutions of dehydrated alcohol 50kg are added in reactor successively, stir 5min and obtain mixed solution;
Step 2: distilled water, 2N hydrochloric acid, dehydrated alcohol 100kg are carried out to pre-mixing and evenly obtain mixing solutions and insert in Dropping feeder, mixing solutions is slowly at the uniform velocity added dropwise in the mixed solution in reactor in 60min.
Step 3: add successively heavy aromatics, residue dehydrated alcohol, ethylene glycol ethyl ether, iron trichloride in the reactor in step 2, stir 10min, obtain curing agent solution.
By prepare gained host and curing agent solution by weight 2:1 ratio mix, obtain described highly corrosion resistant shop primer.
Embodiment 2:
A highly corrosion resistant shop primer, formulated by weight 2:1 ratio by coating host and solidifying agent, wherein host is comprised of following component:
Wherein solidifying agent is comprised of following component:
Wherein, above-mentioned tetraethyl silicate silicon content is 40 ± 2%.
The preparation technology of above-mentioned shop primer liquid, wherein:
The preparation process of host is:
Grinding steps: by above-mentioned acid polyethylene butyraldehyde liquid, white carbon black, wilkinite GBP-183, titanium dioxide NTR-606, compound ferrophosphorus powder, silica powder 350 orders, industrial alcohol, dimethylbenzene mixed grinding, obtain grinding product;
Mediation step: add successively zinc powder, anti-sagging agent 3300X in grinding product, be uniformly dispersed through high speed shear, be deployed into host;
The preparation process of solidifying agent is:
Step 1: tetraethyl silicate-40, two kinds of reaction solutions of dehydrated alcohol 100kg are added in reactor successively, stir 10miin and obtain mixed solution;
Step 2: distilled water, 2N hydrochloric acid, dehydrated alcohol 150kg are carried out to pre-mixing and evenly obtain mixing solutions and insert in Dropping feeder, mixing solutions is slowly at the uniform velocity added dropwise in the mixed solution in reactor in 90min.
Step 3: add successively heavy aromatics, residue dehydrated alcohol, ethylene glycol ethyl ether, iron trichloride in the reactor in step 2, stir 10min, obtain curing agent solution.
By preparing gained host and curing agent solution, in 2:1 ratio, mix, obtain described highly corrosion resistant shop primer.
Embodiment 3:
A highly corrosion resistant shop primer, formulated by weight 2:1 ratio by coating host and solidifying agent, wherein host is comprised of following component:
Wherein solidifying agent is comprised of following component:
Wherein, above-mentioned tetraethyl silicate silicon content is 40 ± 2%.
The preparation technology of above-mentioned shop primer liquid, wherein:
The preparation process of host is:
Grinding steps: by above-mentioned acid polyethylene butyraldehyde liquid, white carbon black, wilkinite GBP-183, titanium dioxide NTR-606, compound ferrophosphorus powder, silica powder 350 orders, industrial alcohol, dimethylbenzene mixed grinding, obtain grinding product;
Mediation step: add successively zinc powder, anti-sagging agent 3300X in grinding product, be uniformly dispersed through high speed shear, be deployed into host;
The preparation process of solidifying agent is:
Step 1: tetraethyl silicate-40, two kinds of reaction solutions of dehydrated alcohol 60kg are added in reactor successively, stir 5min and obtain mixed solution;
Step 2: distilled water, 2N hydrochloric acid, dehydrated alcohol 150kg are carried out to pre-mixing and evenly obtain mixing solutions and insert in Dropping feeder, mixing solutions is slowly at the uniform velocity added dropwise in the mixed solution in reactor in 90min.
Step 3: add successively heavy aromatics, residue dehydrated alcohol, ethylene glycol ethyl ether, iron trichloride in the reactor in step 2, stir 10min, obtain curing agent solution.
By preparing gained host and curing agent solution, in 2:1 ratio, mix, obtain described highly corrosion resistant shop primer.
Above embodiment 1-3 product and commercially available shop primer are contrasted, and actual detection data are as follows:
By above-mentioned test data, can see the shop primer that adopts the inventive method to prepare, sticking power is stronger, surface drying time is faster, and weathering resistance is high, and in salt fog resistance, the environment such as be exposed to the sun, paint film property is more excellent.
Treatment process of the present invention is described by specific embodiment.Those skilled in the art can use for reference the links such as content appropriate change raw material of the present invention, processing condition and realize corresponding other object, its relevant change does not all depart from content of the present invention, all similar replacements and change apparent to those skilled in the art, within being all deemed to be included in scope of the present invention.
Claims (7)
1. a highly corrosion resistant shop primer, formulated in 2:1 ratio by coating host and solidifying agent, wherein counts by weight host and be comprised of following component:
Wherein counting by weight solidifying agent is comprised of following component:
2. shop primer according to claim 1, wherein said tetraethyl silicate silicon content is 40 ± 2%.
3. shop primer according to claim 1, wherein said heavy aromatics is heavy aromatics p-4.
4. the preparation technology of shop primer liquid according to claim 1, it comprises the following steps:
The preparation process of host is:
Grinding steps: by acid polyethylene butyraldehyde liquid, white carbon black, wilkinite GBP-183, titanium dioxide NTR-606, compound ferrophosphorus powder, silica powder 350 orders, industrial alcohol, dimethylbenzene mixed grinding, obtain grinding product;
Mediation step: add successively zinc powder, anti-sagging agent 3300X in grinding product, be uniformly dispersed through high speed shear, be deployed into host;
The preparation process of solidifying agent is:
Step 1: tetraethyl silicate-40, two kinds of reaction solutions of dehydrated alcohol are added in reactor successively, stir 5-10min and obtain mixed solution;
Step 2: distilled water, 2N hydrochloric acid, dehydrated alcohol are carried out to pre-mixing and evenly obtain mixing solutions and insert in Dropping feeder, mixing solutions is slowly added dropwise in the mixed solution in reactor.
Step 3: add successively heavy aromatics, dehydrated alcohol, ethylene glycol ethyl ether, iron trichloride in the reactor in step 2, stir, obtain curing agent solution.
By preparing gained host and curing agent solution, in 2:1 ratio, mix, obtain described highly corrosion resistant shop primer.
5. preparation technology according to claim 4 wherein in solidifying agent preparation process, is added dropwise to the mixing solutions in step 2 in reactor in mixed solution in 60min-90min.
6. preparation technology according to claim 4, wherein, in solidifying agent preparation process, the churning time of step 1 and step 3 is controlled in 5-10min.
7. according to the preparation technology described in claim 4-6 any one, wherein, in solidifying agent preparation process, in step 1, the addition of dehydrated alcohol is counted 5-10 part by weight; In step 2, the addition of dehydrated alcohol is counted 10-15 part by weight; The addition of step 3 dehydrated alcohol is counted 15-25 part by weight.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201064A (en) * | 2017-06-07 | 2017-09-26 | 常州三伊化工有限公司 | A kind of shop primer and preparation method thereof |
| CN110894066A (en) * | 2019-12-31 | 2020-03-20 | 瓮福（集团）有限责任公司 | Method for preparing sheet iron phosphate from titanium dioxide slag |
| CN113897091A (en) * | 2021-11-29 | 2022-01-07 | 厦门双瑞船舶涂料有限公司 | Compound anti-settling agent of alcohol-soluble inorganic zinc silicate paint and preparation method thereof, and inorganic zinc silicate paint zinc powder component and preparation method thereof |
| CN115058134A (en) * | 2022-08-17 | 2022-09-16 | 潍坊学院 | Water-based inorganic zinc-rich primer and preparation method thereof |
Citations (1)
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| CN102702884A (en) * | 2012-06-29 | 2012-10-03 | 太仓市兰燕甲板敷料涂料有限公司 | Multi-purpose quick-drying type inorganic zinc shop primer and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102702884A (en) * | 2012-06-29 | 2012-10-03 | 太仓市兰燕甲板敷料涂料有限公司 | Multi-purpose quick-drying type inorganic zinc shop primer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄淑艳等: ""无机硅酸锌预涂底漆的研制"", 《煤炭与化工》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201064A (en) * | 2017-06-07 | 2017-09-26 | 常州三伊化工有限公司 | A kind of shop primer and preparation method thereof |
| CN110894066A (en) * | 2019-12-31 | 2020-03-20 | 瓮福（集团）有限责任公司 | Method for preparing sheet iron phosphate from titanium dioxide slag |
| CN113897091A (en) * | 2021-11-29 | 2022-01-07 | 厦门双瑞船舶涂料有限公司 | Compound anti-settling agent of alcohol-soluble inorganic zinc silicate paint and preparation method thereof, and inorganic zinc silicate paint zinc powder component and preparation method thereof |
| CN115058134A (en) * | 2022-08-17 | 2022-09-16 | 潍坊学院 | Water-based inorganic zinc-rich primer and preparation method thereof |
| CN115058134B (en) * | 2022-08-17 | 2022-10-28 | 潍坊学院 | Water-based inorganic zinc-rich primer and preparation method thereof |
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