CN106893485B - A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application - Google Patents
A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application Download PDFInfo
- Publication number
- CN106893485B CN106893485B CN201710174552.8A CN201710174552A CN106893485B CN 106893485 B CN106893485 B CN 106893485B CN 201710174552 A CN201710174552 A CN 201710174552A CN 106893485 B CN106893485 B CN 106893485B
- Authority
- CN
- China
- Prior art keywords
- component
- coating
- chromium
- free zinc
- zinc aluminum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/103—Anti-corrosive paints containing metal dust containing Al
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/47—Levelling agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
- B05D2518/10—Silicon-containing polymers
- B05D2518/12—Ceramic precursors (polysiloxanes, polysilazanes)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses lower aqueous chromium-free zinc-aluminum paints of a kind of sintering temperature and its preparation method and application, the coating contains mass ratio (1.0-1.5): 1.0 component A and component B, also contains polyether-modified dimethyl siloxane, hydroxyethyl ether cellulose and defoaming agent；Component A is made of methyltrimethoxysilane, deionized water, methanol or ethyl alcohol, sodium phosphomolybdate；Component B is made of zinc flake, flake aluminum, ethylene glycol, ethyl alcohol, tween and polyoxethylene octylphenyl phenol ether.The production cost of coating of the present invention is low, it is only necessary to 100 yuan/kilogram；Sintering can be realized at 220-250 DEG C, can reduce the heating facility requirement and production energy consumption of production scene；The organic solvent for having larger pollution to environment is not used, it is environmentally friendly.
Description
Technical field
The invention belongs to anticorrosive metal fields, and in particular to a kind of lower aqueous chromium-free zinc-aluminum paint of sintering temperature and
Preparation method and use.
Background technique
Traditional electrogalvanizing and hot dipping zinc technology due to corrosion resistance is poor, energy consumption is high, it is seriously polluted, have a hydrogen embrittlement, and use temperature
Degree is limited by passivating film aging temperature, can only be used below at 100 DEG C, there is significant limitation.
Aluminum Coating (Dacromet/steel) is incomparable due to having the advantages that traditional electrogalvanizing and galvanizing, thus
The field of anticorrosive metal is needed to have wide application.Aluminum Coating is by zinc flake, aluminium powder and chromic anhydride etc. into grouping
At mixed liquor be coated on workpiece surface after mixing evenly, then sintering curing, redox reaction form unbodied
nCr2O3·mCrO3Complex salt.
However, containing Cr in Aluminum Coating6+, Cr6+Strong toxicity and there is carcinogenesis, environment for human survival can be caused sternly
Heavily contaminated, therefore the use of chromium has been subjected to the limitation being increasingly stringenter.European 2000/53/EG regulation, from July 1st, 2003
It rises, in each automobile that Europe produces and sells, the content of Cr VI must not exceed 2g, in the corrosion-inhibiting coating used on automobile
Do not allow containing Cr6+.Many brand vehicles also take the lead in having formulated without chrome coating in the automobile industry of industrially developed country in the world
Technical standard.
In addition, the sintering temperature of Dyclo paint is generally at 300 DEG C or more, sintering temperature is high, and energy consumption is big.Therefore, zinc
The Trend of Chrome-free of aluminized coating is extremely urgent.
Currently, Delta and Geomet are typical chromium-free zinc aluminum coating, but both material prices are all higher.Geomet
The German spot price of slurries is 40 Euros/kilogram, and the Japanese spot price of Geomet Geomet slurries is 1750 yen/kilogram, by
This estimates that their sale prices in China all should be in 250 yuans/kilogram or more.It is expensive.
Summary of the invention
It is higher (generally greater than 300 DEG C) for existing Aluminum Coating sintering temperature, it is at high cost, it needs to use environmental pollution
The defects of biggish organic solvent, the primary purpose of the present invention is that providing, a kind of environmental pollution is smaller, and at low cost, sintering is warm
Spend low chromium-free zinc aluminum coating.
Another object of the present invention is to provide the preparation methods of above-mentioned chromium-free zinc aluminum coating.
A further object of the present invention is to provide the purposes of above-mentioned chromium-free zinc aluminum coating.
The purpose of the invention is achieved by the following technical solution:
A kind of chromium-free zinc aluminum coating contains mass ratio (1.0-1.5): 1.0 component A and component B, also containing account for component A,
The polyether-modified dimethyl siloxane of B gross mass 1-2%, 0.2-0.5% hydroxyethyl ether cellulose and 0.5-0.7% defoaming agent；
In this formula, dispersing agent and levelling agent of the polyether-modified dimethyl siloxane as coating can make in coating
Metal-powder dispersion more evenly, obtained coating is more smooth；Thickener of the hydroxyethyl ether cellulose as coating, defoaming agent
Eliminate the unwanted bubbles in dope preparing process.
The component A is by following mass percent at being grouped as:
In component A, methyltrimethoxysilane is the film forming matter of coating, and deionized water is methyltrimethoxysilane
Hydrolysis auxiliary agent, methanol or ethyl alcohol can make the hydrolysis of component A more stable, and sodium phosphomolybdate is the corrosion inhibiter of coating, can enhance painting
The corrosion resistance of layer.
The component B is by following mass percent at being grouped as:
In component B, sheet aluminum zinc powder is the powder section of coating.The wet guarantor of ethylene glycol and ethyl alcohol as metal-powder
Agent is protected, the powder in coating on the one hand can be made to be easier to disperse, on the other hand can reduce the metal-powder sintering curing in coating
Oxidation reaction in the process.There is evil foams when tween can eliminate coating preparation, and can enhance the corrosion resistance of coating
Energy.Polyoxethylene octylphenyl phenol ether is surfactant, promotes clagging in by protection matrix.
Relative to particulate zinc aluminium powder, sheet aluminum zinc powder can play wall effect, and the overlapping of sheet aluminum zinc powder stratiform can more have
It imitates the corrosive mediums such as ground resistance water blocking, oxygen and contacts matrix, save metal-powder dosage；
The preferred polysorbas20 of the tween；
The preferred polyoxethylene octylphenyl phenol ether -10 of the polyoxethylene octylphenyl phenol ether.
The preparation method of above-mentioned chromium-free zinc aluminum coating, comprising the following steps:
(1) it is first put into methyltrimethoxysilane and alcohol, is stirred evenly, deionized water is then added and obtains hydrolyzate, adjusts water
Solution liquid pH value is 3.5-5.5, and hydrolyzate is stirred 1-1.5 hours at 20-30 DEG C, finally adds sodium phosphomolybdate stirring 1.5-
2.5 hours, obtain component A；
The preferred revolving speed 500r/min of the stirring；
(2) take flake zinc aluminium powder, add ethylene glycol and ethyl alcohol, then be added dropwise polyoxethylene octylphenyl phenol ether and
Tween20 stirs evenly to obtain component B；
(3) component A and component B are mixed, and be put into polyether-modified dimethyl siloxane, hydroxyethyl ether cellulose and
Defoaming agent, stirring obtained chromium-free zinc aluminum coating after 1.5-2.5 hours.
Above-mentioned chromium-free zinc aluminum coating can be applied in anticorrosion field, and application method is as follows:
Derusting by sandblasting processing is carried out to protected matrix surface, sandblasting partial size is 20-30 mesh, is subsequently placed in acetone or second
Ultrasonic cleaning 5min is carried out in alcohol；Matrix is brushed with chromium-free zinc aluminum coating, or is dipped in coating and is taken out after 10s, then
It is heated to 10min or more at 70-100 DEG C and carries out prebake, so that the water in coating is slowly volatilized with alcohol, prevents coating in height
In warm sintering process, water alcohol evaporation rate is too fast, and coating is caused hole occur, reduces the antiseptic property of coating；It finally will drying
Matrix at 220-250 DEG C sintering curing 25-30min.
The present invention has the following advantages and effects with respect to the prior art:
1, the production cost of coating of the present invention is low, it is only necessary to 100 yuan/kilogram；2, prior art sintering temperature be 300 DEG C with
On, this coating can realize sintering at 220-250 DEG C, can reduce the heating facility requirement and production energy consumption of production scene；3,
The organic solvent for having larger pollution to environment is not used, it is environmentally friendly.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Embodiment 1
A kind of chromium-free zinc aluminum coating, is prepared by following methods:
(1) it is first put into 10g methyltrimethoxysilane and 25g ethyl alcohol, is stirred using blender (500r/min, 30 DEG C)
5min, places into 15g deionized water, and pH value is adjusted to 4.5, is stirred 2 hours using blender, obtains component A.
(2) 25g zinc flake, 5g flake aluminum, 14g ethylene glycol, 2g ethyl alcohol, 0.5g polyoxethylene octylphenyl phenol are put into
Ether -10 and 1g Tween20 are uniformly mixed to obtain slurry component B.
(3) component A is poured into component B, and is put into the polyether-modified dimethyl silica of 0.5g hydroxyethyl ether cellulose, 1.5g
Alkane and 0.5g defoaming agent DOW CORNING AFE-3168 are stirred 2 hours using blender (500r/min, 30 DEG C), obtain sintering temperature and low
Chromium-free zinc aluminum coating.
Sandblasting (partial size 20-30 mesh) is carried out to workpiece to be handled, and carries out ultrasonic dedusting 5min, workpiece is then dipped in painting
It is taken out after 10s in material, workpiece is put into 100 DEG C of resistance-heated furnace 10min, finally puts it into 240 DEG C of resistance-heated furnace
20min takes out to its natural cooling.
Effect: tolerable concentration is that 5% sodium chloride solution impregnates 15 days, and coating corrosion current density is 10.81 μ A/cm2。
Embodiment 2
A kind of chromium-free zinc aluminum coating, is prepared by following methods:
(1) it is first put into 10g methyltrimethoxysilane and 20g methanol, is stirred using blender (500r/min, 30 DEG C)
5min, places into 20g deionized water, and pH value is adjusted to 4.5, is stirred 1 hour using blender, obtains component A.
(2) 25g zinc flake, 5g flake aluminum, 14g ethylene glycol, 2g ethyl alcohol, 0.5g polyoxethylene octylphenyl phenol are put into
Ether -10 and 1g Tween20 are uniformly mixed to obtain slurry component B.
(3) component A is poured into component B, and is put into the polyether-modified dimethyl silica of 0.5g hydroxyethyl ether cellulose, 1.5g
Alkane and 0.5g DOW CORNING AFE-3168 are stirred 2 hours using blender (500r/min, 30 DEG C), obtain the Chrome-free of sintering temperature and low
Zinc-aluminum paint.
Sandblasting (partial size 20-30 mesh) is carried out to workpiece to be handled, and carries out ultrasonic dedusting 5min, workpiece is then dipped in painting
It is taken out after 10s in material, workpiece is put into 100 DEG C of resistance-heated furnace 10min, finally puts it into 240 DEG C of resistance-heated furnace
20min takes out to its natural cooling.
Effect: tolerable concentration is that 5% sodium chloride solution impregnates 23 days, and coating corrosion current density is 6.15 μ A/cm2。
Embodiment 3
A kind of chromium-free zinc aluminum coating, is prepared by following methods:
(1) it is first put into 10g methyltrimethoxysilane and 15g methanol, is stirred using blender (500r/min, 30 DEG C)
5min, places into 25g deionized water, and pH value is adjusted to 4.5, is stirred 2 hours using blender, obtains component A.
(2) 25g zinc flake, 5g flake aluminum, 14g ethylene glycol, 2g ethyl alcohol, 0.5g polyoxethylene octylphenyl phenol are put into
Ether -10 and 1g Tween20 are uniformly mixed to obtain slurry component B.
(3) component A is poured into component B, and is put into the polyether-modified dimethyl silica of 0.5g hydroxyethyl ether cellulose, 1.5g
Alkane and 0.5g DOW CORNING AFE-3168 are stirred 2 hours using blender (500r/min, 30 DEG C), obtain the Chrome-free of sintering temperature and low
Zinc-aluminum paint.
Sandblasting (partial size 20-30 mesh) is carried out to workpiece to be handled, and carries out ultrasonic dedusting 5min, workpiece is then dipped in painting
It is taken out after 10s in material, workpiece is put into 100 DEG C of resistance-heated furnace 10min, finally puts it into 240 DEG C of resistance-heated furnace
20min takes out to its natural cooling.
Effect: tolerable concentration is that 5% sodium chloride solution impregnates 17 days, and coating corrosion current density is 8.24 μ A/cm2。
Embodiment 4
A kind of chromium-free zinc aluminum coating, is prepared by following methods:
(1) it is first put into 10g methyltrimethoxysilane and 20g methanol, is stirred using blender (500r/min, 30 DEG C)
5min, places into 20g deionized water, and pH value is adjusted to 4.5, is stirred 1 hour using blender, is finally putting into 0.3g phosphomolybdic acid
Sodium is stirred 2 hours using blender, obtains component A.
(2) 25g zinc flake, 5g flake aluminum, 14g ethylene glycol, 2g ethyl alcohol, 0.5g polyoxethylene octylphenyl phenol are put into
Ether -10 and 1g Tween20 are uniformly mixed to obtain slurry component B.
(3) component A is poured into component B, and is put into the polyether-modified dimethyl silica of 0.5g hydroxyethyl ether cellulose, 1.5g
Alkane and 0.5g DOW CORNING AFE-3168 are stirred 2 hours using blender (500r/min, 30 DEG C), obtain the Chrome-free of sintering temperature and low
Zinc-aluminum paint.
Sandblasting (partial size 20-30 mesh) is carried out to workpiece to be handled, and carries out ultrasonic dedusting 5min, workpiece is then dipped in painting
It is taken out after 10s in material, workpiece is put into 100 DEG C of resistance-heated furnace 10min, finally puts it into 240 DEG C of resistance-heated furnace
20min takes out to its natural cooling.
Effect: tolerable concentration is that 5% sodium chloride solution impregnates 35 days, and coating corrosion current density is 3.15 μ A/cm2。
Embodiment 5
A kind of chromium-free zinc aluminum coating, is prepared by following methods:
(1) it is first put into 10g methyltrimethoxysilane and 20g methanol, is stirred using blender (500r/min, 30 DEG C)
5min, places into 20g deionized water, and pH value is adjusted to 4.5, is stirred 1 hour using blender, is finally putting into 0.45g phosphomolybdic acid
Sodium is stirred 2 hours using blender, obtains component A.
(2) 25g zinc flake, 5g flake aluminum, 14g ethylene glycol, 2g ethyl alcohol, 0.5g polyoxethylene octylphenyl phenol are put into
Ether -10 and 1g Tween20 are uniformly mixed to obtain slurry component B.
(3) component A is poured into component B, and is put into the polyether-modified dimethyl silica of 0.5g hydroxyethyl ether cellulose, 1.5g
Alkane and 0.5g DOW CORNING AFE-3168 are stirred 2 hours using blender (500r/min, 30 DEG C), obtain the Chrome-free of sintering temperature and low
Zinc-aluminum paint.
Sandblasting (partial size 20-30 mesh) is carried out to workpiece to be handled, and carries out ultrasonic dedusting 5min, workpiece is then dipped in painting
It is taken out after 10s in material, workpiece is put into 100 DEG C of resistance-heated furnace 10min, finally puts it into 240 DEG C of resistance-heated furnace
20min takes out to its natural cooling.
Effect: tolerable concentration is that 5% sodium chloride solution impregnates 30 days, and coating corrosion current density is 4.31 μ A/cm2。
In embodiment 1-3, the water content ranges of component A are 30-50%, and optimal value is 40% (corresponding coating corrosion electricity
Current density is minimum).If water content is lower than 30%, methyltrimethoxysilane cannot be fully hydrolyzed, and cause coating quality of forming film low,
Reduce the corrosion resistance of coating；If water content is higher than 50%, methyltrimethoxysilane is hydrolyzed fast and then too fast contracts
Poly- reaction, it is low to also result in coating quality of forming film, reduces corrosion resistance.
Embodiment 4-5 explanation, the best amount of being put into of sodium phosphomolybdate are 0.6% (embodiment 4).When dosage is more than 0.9%, apply
The corrosion resistance of layer can be decreased obviously.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (6)
1. a kind of chromium-free zinc aluminum coating, it is characterised in that: contain mass ratio (1.0-1.5): 1.0 component A and component B also contains
Account for the polyether-modified dimethyl siloxane of component A, B gross mass 1-2%, 0.2-0.5% hydroxyethyl ether cellulose and 0.5-0.7%
Defoaming agent；
The component A is by following mass percent at being grouped as:
The component B is by following mass percent at being grouped as:
2. chromium-free zinc aluminum coating according to claim 1, it is characterised in that: the tween is polysorbas20.
3. chromium-free zinc aluminum coating according to claim 1, it is characterised in that: the polyoxethylene octylphenyl phenol ether is poly-
Ethylene oxide octyl phenol ether -10.
4. the preparation method of the described in any item chromium-free zinc aluminum coating of claim 1-3, it is characterised in that the following steps are included:
(1) it is first put into methyltrimethoxysilane and alcohol, is stirred evenly, deionized water is then added and obtains hydrolyzate, adjusts hydrolyzate
PH value is 3.5-5.5, and hydrolyzate is stirred 1-1.5 hours at 20-30 DEG C, finally adds sodium phosphomolybdate stirring 1.5-2.5
Hour, obtain component A；
(2) flake zinc aluminium powder is taken, ethylene glycol and ethyl alcohol are added, polyoxethylene octylphenyl phenol ether and Tween20 is then added dropwise,
Stir evenly to obtain component B；
(3) component A and component B is mixed, and is put into polyether-modified dimethyl siloxane, hydroxyethyl ether cellulose and defoaming
Agent, stirring obtained chromium-free zinc aluminum coating after 1.5-2.5 hours.
5. application of the described in any item chromium-free zinc aluminum coating of claim 1-3 in anticorrosion field.
6. application of the chromium-free zinc aluminum coating according to claim 5 in anticorrosion field, it is characterised in that application method
It is as follows:
Derusting by sandblasting processing is carried out to matrix surface, sandblasting partial size is 20-30 mesh, is subsequently placed in acetone or ethyl alcohol and is surpassed
Sound cleans 5min；Matrix is brushed with chromium-free zinc aluminum coating, or is dipped in coating and is taken out after 10s, then by it in 70-
10min or more is heated at 100 DEG C and carries out prebake, so that the water in coating is slowly volatilized with alcohol, is prevented coating in high temperature sintering mistake
Cheng Zhong, water alcohol evaporation rate is too fast, and coating is caused hole occur, reduces the antiseptic property of coating；Finally the matrix of drying is existed
Sintering curing 25-30min at 220-250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174552.8A CN106893485B (en) | 2017-03-22 | 2017-03-22 | A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174552.8A CN106893485B (en) | 2017-03-22 | 2017-03-22 | A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106893485A CN106893485A (en) | 2017-06-27 |
| CN106893485B true CN106893485B (en) | 2019-04-12 |
Family
ID=59192437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710174552.8A Active CN106893485B (en) | 2017-03-22 | 2017-03-22 | A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106893485B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109111775A (en) * | 2018-07-27 | 2019-01-01 | 广东工业大学 | A kind of Chrome-free Zn-Al coating and a kind of Chrome-free Zn-Al coating |
| CN116179001A (en) * | 2022-12-09 | 2023-05-30 | 衡阳泰豪通信车辆有限公司 | Preparation method and application method of water-based chromium-free composite coating and coating thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250518A (en) * | 2014-09-11 | 2014-12-31 | 王广波 | Water-based chromium-free anti-corrosion coating |
| CN106398521B (en) * | 2015-07-29 | 2019-02-15 | 佛山市高明区(中国科学院)新材料专业中心 | A kind of aqueous chromium-free Dyclo paint and preparation method thereof and application method |
| CN106479353B (en) * | 2015-09-02 | 2019-05-21 | 佛山市高明区(中国科学院)新材料专业中心 | A kind of hydrophobic chromium-free Dyclo paint |
| CN105524505A (en) * | 2016-01-19 | 2016-04-27 | 沈阳市航达科技有限责任公司 | Double-ingredient chrome-free water-based metal anticorrosive paint and preparation method thereof |
-
2017
- 2017-03-22 CN CN201710174552.8A patent/CN106893485B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106893485A (en) | 2017-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108300988A (en) | A kind of compound chrome-free tanning agent and preparation method of fast filming | |
| CN106497274B (en) | Silicon steel insulating coating, preparation method and its application method | |
| JP2012514669A (en) | Coating composition and passivated galvanized material | |
| CN104561970A (en) | Corrosion-resistant magnesium aluminum alloy chromium-free passivation solution | |
| CN104532226A (en) | Environment-friendly organic-inorganic hybrid aluminum alloy primer and preparation method thereof | |
| CN103045058A (en) | Insulation coating and electrical steel material, and preparation method thereof | |
| CN108677178A (en) | Aluminum alloy surface silane corrosion-resisting film and preparation method thereof under a kind of marine environment | |
| CN106893485B (en) | A kind of lower chromium-free zinc aluminum coating of sintering temperature and its preparation method and application | |
| CN109722661A (en) | Rear-earth-doped inorganic agent of a kind of basic silane for Treatment of Metal Surface and its preparation method and application | |
| CN102985594B (en) | Anticorrosive sol-gel paint and composition and method of making the same | |
| CN107012453A (en) | A kind of method that green low temperature quickly prepares phosphating coat | |
| CN108300302A (en) | Metal surface silane treatment agent and preparation method thereof | |
| CN109504238B (en) | Single-component self-curing chromium-free zinc-aluminum anticorrosive paint and preparation and application thereof | |
| CN101608306B (en) | Passivating solution and surface treatment method for galvanized material | |
| CN106398521A (en) | Aqueous chrome-free dacromet coating material, preparation method and use method thereof | |
| CN106833370B (en) | A kind of zinc-aluminum paint and its preparation method and application | |
| CN101914344B (en) | Non-chrome water-based organic fingerprint-resistant coating and preparation method thereof | |
| CN106894009B (en) | A kind of epoxy group POSS modified metal surface pretreating reagent and preparation method thereof, application | |
| CN111560607B (en) | Surface treatment liquid for hot-dip galvanized aluminum magnesium steel plate and preparation method of hot-dip galvanized aluminum magnesium chromium-free passivated plate | |
| CN106009794A (en) | Comprehensive anti-corrosion coating with alloy co-doping, Dacromet and sealing layer | |
| CN108611631A (en) | The processing technology of anticorrosion easy processing galvanized steel plain sheet | |
| CN103031553B (en) | A kind of color coating pre-treatment environmental protection passivator and preparation method thereof | |
| CN112695310B (en) | Magnesium alloy surface conversion treatment liquid and application | |
| CN109207973A (en) | A kind of preparation method for the passivating solution replacing chromic acid passivation | |
| CN111270230A (en) | Environment-friendly surface treatment liquid for hot-dip aluminum-zinc plate and preparation method of hot-dip aluminum-zinc passivated plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |