CN1070208A - Basic silicochromic lead rust-proof paint - Google Patents
Basic silicochromic lead rust-proof paint Download PDFInfo
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- CN1070208A CN1070208A CN 92106642 CN92106642A CN1070208A CN 1070208 A CN1070208 A CN 1070208A CN 92106642 CN92106642 CN 92106642 CN 92106642 A CN92106642 A CN 92106642A CN 1070208 A CN1070208 A CN 1070208A
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Abstract
The invention discloses a kind of basic silicochromic lead rust-proof paint, it belongs to the organic compound is the composition of base-material.This paint vehicle is a base-material with Resins, epoxy and isocyanate prepolymer liquid, as main rust-stabilising pigment, is aided with other pigment, filler with basic lead chromate silicate (BLSC), auxiliary agent and solvent and make the paint vehicle with excellent rustless property.This lacquer is as steel material surface protection priming paint, and is for the strong adhesion of steel, also good for the ply adhesion of polyurethane finish.Have fabulous rust-proof effect in the ocean environment of this rust-inhibiting paint under combined influences such as water, vapour, salt fog, daylight, fully applicable to ship deck, offshore drilling platforms, corrosion protection occasions such as chemical pipeline.
Description
The present invention relates to the rust-inhibiting paint of ferrous materials, especially a kind of basic silicochromic lead rust-proof paint.This lacquer is as priming paint, and good for the interlayer tack of polyurethane finish for the strong adhesion of steel, it belongs to the organic compound is the combination paint vehicle of base-material.
The rust-inhibiting paint of often selling has in the market: with Synolac, or with chlorinated rubber, or with resol, or be the rust-inhibiting paint of base-material with castor oil soap etc.Though the widespread use of these rust-inhibiting paints can't adapt to the requirement of some special occasions: paint film adhesion requires strong, and the resistant to chemical media ability is eager to excel, and drying wants rapid weathering resistance to be eager to excel.On the ship deck that Here it is in the ocean environment of combined influences such as water, vapour, salt, mist, daylight, on the drilling unit, the first-class occasion of Hainan Airlines beacon.The antirust requirement of these occasions is high, all not competent this antirust demanding occasion of above-mentioned listed several rust-inhibiting paints.Base-material priming paint such as alkyd are relatively poor for the sticking power of ferrous materials, and its work-ing life is shorter, and are special relatively poor for the ply adhesion of some polyurethane finishs, be full of cracks or obscission occur through regular meeting.Though contain antirust filler pigment in the above-mentioned rust-inhibiting paint, as red lead, red iron oxide, zinc yellow etc.Wherein the rust-proof effect of red iron oxide is relatively poor, and zinc yellow only plays chemical rust inhibition.Only have the rustless property of red lead better, but the contained lead oxides of red lead is up to 100%, its Toxicity of Lead is big; And also big (9.1 gram per centimeters of the density of red lead
3).The rust-inhibiting paint that cooperates base-materials such as above-mentioned alkyd by red lead and make.This lacquer package stability is poor, very easily sinks to the bottom caking.The adaptability of the variation that the ground that this red lead paint causes physical environment expands with heat and contract with cold is also very poor, and the work-ing life of paint film is shorter.
Purpose of the present invention is exactly the defective that will overcome above-mentioned rust-inhibiting paint.Prepare a kind of rustless property excellence, have the physical chemistry antirust function concurrently, the physicals of paint film is good, shelf-stable, and toxicity is low, resistant to chemical media, the paint vehicle that weathering resistance is strong.This lacquer uses as priming paint, to adapt to vibration environment and can bear that metal expands with heat and contract with cold variation and not ftractureing do not come off, thereby reach the purpose of protection steel material surface.
Task of the present invention is that following technical scheme realizes: filter out a kind of basic silicochromic lead rust-proof paint.This lacquer is by mill base and prepolymer liquid, and is formulated by a certain percentage, and general existing the use now joined lacquer.Consisting of of mill base wherein:
Form and divide mass percent
Resins, epoxy 3-40
Basic lead chromate silicate (BLSC) 10-70
Laminal filler 0-40
Color stuffing 0-40
Coal tar pitch 0-20
Auxiliary agent 0-5
Solvent 10-50
With forming above-mentioned each component of mill base, drop into successively in the ball mill, ground 24 hours, promptly get mill base, package spare;
Wherein the preparation of prepolymer liquid is by the compound of isocyanic ester and hydroxyl, carries out polyreaction by stoichiometric ratio: NCO/OH=1.4-2.5/1, thereby obtains isocyanate prepolymer liquid.This prepolymer liquid average per molecule contains 1.2 NCO bases at least;
Above-mentioned prepolymer liquid and mill base are joined lacquer in the scene in use.Join when lacquer, by the OH base of the Resins, epoxy in the mill base and the ratio of the NCO base of isocyanate prepolymer liquid: 1/0.8～2.7 joins lacquer.The lacquer consumption of joining of general this prepolymer liquid is: 3～40% of rust-inhibiting paint.Join the rust-inhibiting paint that forms of lacquer and have the rustless property excellence, the good physical performance of paint film, rapidly dry, shelf-stable is not stratified, and its toxicity is low, and resistant to chemical media erosive ability is strong.
The selected basic lead chromate silicate (BLSC) of the present invention is as the rust-stabilising pigment of the key character of this rust-inhibiting paint, and it has physics and chemical antirust dual-use function concurrently.This BLSC is a kind of mixture that is enclosed with lead silicate and basic lead chromate on the inertia silica core.The bag nuclear structure that this silica core encapsulation reaction produces plays decisive role for the rustless property of paint vehicle.Because in the bag nuclear structure of BLSC, there is lead over half to be combined into nontoxic lead chromate and lead silicate, active lead in BLSC is suppressed like this, approximately only has 1/4th alkali formula plumbous oxide toxic, than the toxicity much less of the plumbous oxide of 100% in the red lead.Thereby just reduced the toxicity of this rust-inhibiting paint.Because the density of red lead is bigger, be generally 9.1 gram per centimeters simultaneously
3, and the density of BLSC only is 4 gram per centimeters
3, half of not enough red lead.As this antirust color stuffing, the relative red lead of BLSC just more is difficult for precipitated and separated, and its package stability is just high.
One of main base-material that the present invention is selected is a Resins, epoxy.This resin is the compound that contains hydroxyl (OH) in a kind of molecular structure, and its epoxy equivalent (weight) is between 100-8500.Being preferably the Resins, epoxy of bisphenol A-type as the Resins, epoxy of base-material, perhaps is the Resins, epoxy of phenol aldehyde type.These resins can singly select a kind of, and also optional several mixing are used.With the base-material of Resins, epoxy as this lacquer, purpose have in: make the thermotolerance of paint film, non-corrosibility increases, particularly can improve more significantly paint film to the sticking power of base material and the sticking power between enamelled coating.Because Resins, epoxy can be compatible well with various color stuffings.The dispersion that this consistency helps color stuffing with mix, help the comprehensive synergy of each component.This coats with lacquer selected epoxy material can be solid-state epoxy material, E-20 for example, E-12, E-06, E-03; Can be liquid epoxy material also, as E-44, E-51 etc.Solid epoxy resin preferably is made into suitable solution earlier and makes mill base again.
The laminal filler that the present invention is selected as the auxiliary antirust filler of this lacquer can be: mica powder, glass flake, Graphite Powder 99, iron mica, aluminium powder etc.Certainly when only using BLSC, can satisfy the occasion of antirust requirement, also can be without these laminal fillers.Yet one or more that add these fillers will increase the physics rust-proof effect of this rust-inhibiting paint undoubtedly.This be because: these laminal fillers can be arranged in parallel within protected metallic surface well in paint film, play a part to intercept and shielding steam etc. infiltrated.
The coal tar pitch that the present invention is selected adds in the preparation mill base as auxiliary film forming matter.Because coal tar pitch is to belong to hydrophobic nature, can stop the wetting protected object of moisture surface, to improve rustless property.In addition, contain small amount of nitrogen in the coal tar pitch, sulphur etc. also have active hydrogen.In the varnish formation process, nitrogen, but the polyreaction between sulphur and active hydrogen catalysis Resins, epoxy and the isocyanate prepolymer liquid are to quicken the solidification process of paint film.Just because of this katalysis, be matched with again the reaction of moisture in prepolymer liquid and the air from dryness, add the synergy of the various polarity group of epoxy material and prepolymer, these three kinds of effects play comprehensive synergistic effect to basic silicochromic lead rust-proof paint jointly, thereby it is make this rust-inhibiting paint have goodish sticking power and snappiness, and rapidly dry.
The auxiliary agent that the present invention selects for use is the processing of being apt to this rust-inhibiting paint in order to improve, storage or workability.Add a spot of auxiliary agent of the present invention and can reach this purpose.These auxiliary agents can be: anti-settling agent, as DA50; Can be: flow agent, as cellulose acetate butyrate, BYK-300; Can be: thixotropic agent, as vapor phase process SiO
2; Can be anti-aging agent: as: 1010 anti-aging agent, 264 anti-aging agent etc.
The selected solvent of the present invention is the necessary composition branch of this rust-inhibiting paint.The purpose of allocating solvent into is for workabilities such as the process for processing performance of improving this rust-inhibiting paint and brushing, sprayings.These solvents can be: toluene, dimethylbenzene, No. 200 coal tar, hydro carbons such as heavy benzene; Can also be: acetone, methylethylketone, ketones such as cyclohexanone; Can also be: vinyl acetic monomer, ester classes such as N-BUTYL ACETATE.Wherein can select for use one or more to mix uses.
Rust-inhibiting paint of the present invention also will prepare a kind of as the solidifying agent of rust-inhibiting paint of the present invention and the isocyanate prepolymer liquid of base-material before lacquer man's skill in advance.A this isocyanate prepolymer liquid important feature of the present invention just with dual function.This prepolymer liquid mainly is that carried out polyreaction by the compound of isocyanate ester compound and hydroxyl made.In this polyreaction, the stoichiometry of isocyanic ester must generally be reacted by its stoichiometric ratio: NCO/OH=1.4～2.5/1 greater than the stoichiometry of oxy-compound.Wherein the optimum chemical equivalence ratio is: NCO/OH=1.7～2.1/1.Yet also mainly be by hydroxyl (OH) polymerization reaction take place in isocyanate group (NCO) in the prepolymer liquid and the Resins, epoxy in joining the lacquer process, form cross-linked structure.Because the introducing of this prepolymer has overcome the fragility of Resins, epoxy, thereby has improved the snappiness and the shock-resistance of paint film.Because each the component cooperative comprehensive effect in isocyanate prepolymer liquid and the mill base, make paint film layer can bear the influence with vibration deformation of expanding with heat and contract with cold of iron and steel, make the paint film that is attached to steel surface not produce be full of cracks, do not come off.
The present invention can select following material for use at the isocyanate ester compound of selecting preparation isocyanate prepolymer liquid for use: hexamethylene-diisocyanate (HMDI), tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), isophorone diisocyanate, phenylene diisocyanate, the naphthylene vulcabond, polyisocyanates (PAPI).Wherein can select for use a kind of or select for use several mixing to use it.
Hydroxyl (OH) compound of the preparation isocyanate prepolymer liquid that the present invention is selected can be: small molecule alcohol, as: propylene glycol, glycerol, trihydroxy methyl propane, hexylene glycol, 1,2,6-is triol, butyleneglycol etc.Also can be macromole hydroxyl (OH) compound, as: Aethoxy Sklerol, polyesterols, vegetables oil, the polyhutadiene of hydroxyl, and the multipolymer of divinyl and other vinyl monomers.Wherein particularly Aethoxy Sklerol is applicable to this prepolymer liquid of preparation more.These compounds can be selected for use a kind of, or select for use several mixing to use it.
Rust-inhibiting paint of the present invention, owing to adopted basic lead chromate silicate, Resins, epoxy, isocyanate prepolymer and an amount of auxiliary agent and solvent act synergistically mutually, and it is all good to have obtained a kind of rust-proof effect and over-all properties, has the rust-inhibiting paint of physics and chemical rust inhibition concurrently.Because the cooperative comprehensive effect of each component, formed paint film is good antirust property not only, and anti-solvent, and resistant to chemical media can adapt to the ocean environment of vibration environment and climate variability.Paint film can sustain expanding with heat and contract with cold of metal, and does not ftracture, and does not come off.This lacquer is specially adapted to the protection of steel surface.
Embodiments of the invention further specifically describe the feasibility and the reliability of this basic silicochromic lead rust-proof paint.Yet the present invention is not limited among the following embodiment.
Table 1 is: the formula for a product of four kinds of models of basic silicochromic lead rust-proof paint;
Table 1:
The rust-inhibiting paint of above-mentioned four kinds of models after being coated with paint film and solidifying, records each performance such as following table 2.Table 2 is: four kinds of model rust-inhibiting paint test result statistics;
Annotate 1: in the table 1, HQ-1 prepolymer liquid is: by tolylene diisocyanate (TDI) and polypropylene glycol ether, and a kind of isocyanate prepolymer liquid that makes through polyreaction, it contains NCO base 6.1%.
Annotate 2: in the table 2, the salt-fog test data are the data after supporting with polyurethane finish, and paint film is made twice for the end, finish paint respectively are coated with.
Table 2:
Claims (10)
1, a kind of basic silicochromic lead rust-proof paint is characterized in that: this rust-inhibiting paint is made through joining lacquer, wherein consisting of of mill base by mill base and prepolymer liquid:
Form and divide mass percent
Resins, epoxy 3-40
Basic lead chromate silicate (BLSC) 10-70
Laminal filler 0-40
Color stuffing 0-40
Coal tar pitch 0-20
Auxiliary agent 0-5
Solvent 10-50
Form above-mentioned each component of mill base, drop into successively in the ball mill, ground 24 hours, it is standby promptly to get mill base;
Wherein the preparation of prepolymer liquid is by the compound of isocyanic ester and hydroxyl, by stoichiometric ratio be: NCO/OH=1.4-2.5/1 carries out polyreaction, thereby obtain isocyanate prepolymer liquid, average each molecule of this prepolymer liquid contains 1.2 NCO bases at least;
Above-mentioned mill base and prepolymer liquid are joined lacquer in the scene in use; When joining lacquer, by the OH base of the Resins, epoxy in the mill base and the ratio of the NCO base of isocyanate prepolymer liquid: 1/0.8～2.7 joins lacquer, the lacquer consumption of joining of general this prepolymer liquid is: 3～40% of rust-inhibiting paint, thereby make the rustless property excellence, good physical performance, rapidly dry, shelf-stable, toxicity is low, resistant to chemical media erosive rust-inhibiting paint.
2, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described basic lead chromate silicate carries out the silica core encapsulation reaction as the important rust-stabilising pigment of this rust-inhibiting paint by inert silicon-dioxide and lead silicate and basic lead chromate and makes.
3, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described Resins, epoxy is to contain hydroxyl (OH) in the molecular structure, and epoxy equivalent (weight) is at the epoxy compounds of 100-8500.
4, according to the described basic silicochromic lead rust-proof paint of claim 3, it is characterized in that: described Resins, epoxy, be preferably bisphenol A-type, or phenol aldehyde type, or its mixture, these Resins, epoxy can be solid epoxy resins, also can be liquid-state epoxy resins.
5, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described laminal filler as auxiliary antirust filler can be: mica powder, and glass flake, Graphite Powder 99, iron mica, aluminium powders etc. can be selected for use wherein a kind of or select for use several.
6, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described color stuffing as filling the solid material can be: lime carbonate, talcum powder, terra alba, ground barium sulfate, clay, kaolin, red iron oxide, silica powder, bauxitic clay, carbon black, titanium dioxide, various colour generation pigment etc. can be selected wherein one or more for use.
7, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described auxiliary agent is as the processing that improves this lacquer, and a spot of auxiliary agent of storage or workability can be an anti-settling agent, as DA50; Flow agent, as cellulose acetate butyrate, BYK-300; Thixotropic agent, as: vapor phase process SiO
2; Anti-aging agent: as: 1010 anti-aging agent, 264 anti-aging agent etc.
8, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: described solvent is that this coats with lacquer necessary component, and it can be: toluene, dimethylbenzene, No. 200 coal tar solvents, hydro carbons such as heavy benzene; Can also be: acetone, methylethylketone, ketones such as cyclohexanone; Can also be: vinyl acetic monomer, the ester class of N-BUTYL ACETATE etc. wherein can select for use one or more to mix uses.
9, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: the raw material-isocyanic ester of described preparation isocyanate prepolymer liquid can be: hexamethylene-diisocyanate (HMDI), tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), isophorone diisocyanate, phenylene diisocyanate, naphthylene vulcabond, polyisocyanates (PAPI) wherein can be selected for use a kind of or selects for use several mixing to use it.
10, according to the described basic silicochromic lead rust-proof paint of claim 1, it is characterized in that: hydroxyl (OH) compound that described preparation isocyanate prepolymer liquid is required, can select for use: small molecule alcohol, propylene glycol, glycerol, TriMethylolPropane(TMP), hexylene glycol, 1,2,6-is triol, butyleneglycol etc.; Also can be the macromole oxy-compound: Aethoxy Sklerol, polyesterols, vegetables oil, the polyhutadiene of hydroxyl (OH), the polyhutadiene of hydroxyl and the multipolymer of other vinyl monomers, wherein particularly Aethoxy Sklerol is more suitable, can select for use a kind of or selects for use several mixing to use it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106642 CN1036278C (en) | 1992-07-23 | 1992-07-23 | Basic silicochromic lead rust-proof paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106642 CN1036278C (en) | 1992-07-23 | 1992-07-23 | Basic silicochromic lead rust-proof paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1070208A true CN1070208A (en) | 1993-03-24 |
| CN1036278C CN1036278C (en) | 1997-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106642 Expired - Fee Related CN1036278C (en) | 1992-07-23 | 1992-07-23 | Basic silicochromic lead rust-proof paint |
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| CN (1) | CN1036278C (en) |
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| CN102558910A (en) * | 2010-12-09 | 2012-07-11 | 中国科学院金属研究所 | Preparation method of epoxy-resin-grafted glass scale filling material |
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| CN103525145A (en) * | 2013-09-28 | 2014-01-22 | 芜湖中集瑞江汽车有限公司 | Basic lead silicochromate anti-rust paint and preparation method thereof |
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-
1992
- 1992-07-23 CN CN 92106642 patent/CN1036278C/en not_active Expired - Fee Related
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| CN102372959A (en) * | 2010-08-20 | 2012-03-14 | 苏州美亚美建筑涂料有限公司 | Polystyrene-acrylic ester copolymer antirust paint |
| CN102558910A (en) * | 2010-12-09 | 2012-07-11 | 中国科学院金属研究所 | Preparation method of epoxy-resin-grafted glass scale filling material |
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| CN103525145A (en) * | 2013-09-28 | 2014-01-22 | 芜湖中集瑞江汽车有限公司 | Basic lead silicochromate anti-rust paint and preparation method thereof |
| CN104356871B (en) * | 2014-11-24 | 2016-08-17 | 广州市金科化灌有限公司 | A kind of antiwear epoxy resin coating and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1036278C (en) | 1997-10-29 |
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