CN105542621B - Steel structure surface protection VCI powder bimetallic coating and preparation method thereof - Google Patents
Steel structure surface protection VCI powder bimetallic coating and preparation method thereof Download PDFInfo
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- CN105542621B CN105542621B CN201610028730.1A CN201610028730A CN105542621B CN 105542621 B CN105542621 B CN 105542621B CN 201610028730 A CN201610028730 A CN 201610028730A CN 105542621 B CN105542621 B CN 105542621B
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- 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
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Abstract
The present invention provides a kind of protection of steel structure surface to use VCI powder bimetallic coating, includes the component of following parts by weight：Including base-material, filler, VCI vapour phase inhibitors and auxiliary agent；The base-material includes 15 parts~25 parts epoxy powder resins, 15 parts~25 parts polyester powder resins, 5 parts~15 parts polyflons, 5 parts~15 parts organic siliconresins；The filler includes 30 parts~60 parts zinc flakes, 1 part~5 parts flake aluminums, 5 parts~10 parts aluminium triphosphates, 5 parts~10 parts trbasic zinc phosphates；The auxiliary agent is levelling agent, the one or more in conductive agent, degasser, light stabilizer；The base-material, the mass ratio of filler are (3:1~1:2.5)；The quality of the VCI vapour phase inhibitors is 5 parts~10 parts of base-material and filler gross mass；The quality of the auxiliary agent is 2 parts~10 parts of base-material and filler gross mass.The coating had not only had the good shielding action of powdery paints, but also the cathodic protection with quite general zinc-rich paint acts on, while also had the corrosion mitigating effect of VCI vapour phase inhibitors, so as to reach the protection effect excellent to metal base.In addition, the present invention makes such powdery paints have the weatherability more more excellent than general powdery paints using the technique of different weather-proof resin blendings.
Description
Technical field
The invention belongs to paint field, more particularly to a kind of steel structure surface protection with VCI powder bimetallic coating and its
Preparation method.
Background technology
Galvanizing is called galvanizing by dipping, is to immerse the steel member after derusting in the zinc liquid of 600 DEG C or so high temperature melts, makes
Steel member surface attachment zinc layers, zinc coating thickness cannot be less than 65 μm to 5mm with lower thin sheet, and 5mm and above slab are not less than 86 μm.
As a kind of effective anti-corrosion of metal mode, hot dipping zinc technology is had been widely used on the metal structure facility of every profession and trade.
Existing galvanizing construction technology mainly includes：
However, existing galvanizing construction technology has many defects：
(1) acid cleaning process can produce substantial amounts of acid waste liquid, activation and exposure processing stage using 20% hydrochloric acid
Substantial amounts of industrial wastewater can be produced using ZnCl2, NH4Cl solution, if directly discharge can cause water resource, soil resource
Serious pollution, and cost for wastewater treatment is higher；
(2) need to consume substantial amounts of coal resources in the technical process, to maintain zinc bath temperature degree, energy waste is serious.Zinc
The temperature of groove needs to maintain more than 470 DEG C for a long time, and drying needs to maintain 180 DEG C or so, not only needs to consume substantial amounts of coal
The resources such as charcoal, natural gas, and substantial amounts of zinc fume pollution can be produced.By taking certain surface treatment factory as an example, which handles bridge every year
50,000 tons or so of frame, it is per ton to need with coal 55kg or so, the carbon dioxide of standard Discharged form Coal Combustion 2620kg per ton, it is known that the factory
Annual 7205 tons or so of carbon amounts of row (this data does not include the coal for the non-working time maintaining zinc groove to be consumed), belongs to high row's carbon row
Industry.
(3) complicated construction technique, construction environment are severe.There are large quantity of exhaust gas, waste liquid to produce in work progress, and intractability
Greatly, surrounding enviroment are polluted.
(4) zinc resource wastes serious.Metallic zinc is non-renewable resources, and metallic zinc quantity of material is big used in the technique, and
It is general to coating performance.
Therefore, the anti-corrosion generally use zinc-rich paint of existing steel member is realized.The anticorrosive coating of indoor and outdoor steel construction is general
Selection zinc-rich paint is bottom, and compound intermediate coat, finishing coat use, its antiseptic property is mainly made using the cathodic protection of zinc rich primer
With；It is low with a cost, the features such as maintenance cost is not high, and antiseptic property is good.
Zinc-rich paint includes inorganic zinc coating and organic zinc-rich paint, and wherein inorganic zinc coating includes aqueous inorganic again
Zinc-rich paint and the molten inorganic zinc coating of alcohol.This kind of coating has electro-chemical protection to steel, and rustless property is excellent；Resistance to sea
Water, oil resistant, resistance to salt, atmospheric corrosion resistance, good conductivity, does not influence welding procedure.Inorganic zinc coating can for a long time 400 DEG C with
Used in upper hot environment；Organic zinc-rich paint can make the priming paint of anticorrosive paint, such as " epoxy zinc rich primer+epoxy micaceous iron paint+
The anticorrosive paint matching system that chlorinated rubber finish " is formed, service life is up to 7-15.Therefore ship both domestic and external, sea
The anticorrosive measures such as foreign production facilities, heat distribution pipeline, bridge, petrochemical equipment pipeline and high frame iron tower, are adopted more and more
Anticorrosive paint is used as by the use of zinc-rich paint.
However, in recent years, since environmental pollution is increasingly severe, the dynamics that Environmental is administered is increasing.Tradition
Organic zinc-rich paint in due to containing hazardous solvents such as substantial amounts of benzene, dimethylbenzene, butyl acetates, seriously constraining such coating
Development.Aqueous inorganic zinc-enriched coating is favored due to having the characteristics that low VOC content be subject to market.But due to aqueous inorganic
The characteristic of zinc-rich paint in itself, its requirement to pretreatment of base material is higher (Sa2.5 grades), and the pliability of coating is poor, this
The presence of a little shortcomings causes the development of aqueous inorganic zinc-enriched coating to be restricted.Although the molten inorganic zinc coating of alcohol is in certain journey
Solve the problems, such as that aqueous inorganic zinc-enriched coating pliability and pre-treatment requirement are high on degree, but the VOC content of itself is higher, together
Sample is faced with the development problem of organic zinc-rich paint.
The environment friendly of powdery paints and energy-saving and emission-reduction advantage are increasingly prominent in recent years, and industry faces good development machine
Meet.Powdery paints as solventless coatings, meet " four E " principle popular in the world (economic, environmental protection, efficiently, performance it is remarkable),
It is and welcomed by the people.Its feature is as follows：
Technique is simple：Powdery paints is to make powder particle powered using electrostatic generator, is equably adsorbed in metal base
On, then by high-temperature fusion and cure and be transformed into a kind of technology of hard protective coating, small investment, coating process is simply square
Just；
Cleaning：Powdery paints is free of solvent, this is undeniable for environmental protection consciousness growing in the world
Advantage.Meanwhile the powdery paints for spraying landing can be with recycling, when spraying, is aided with cyclone dust removal or filter bag removes device so that
Powdery paints is current most clean coating variety, can accomplish 100% environmental protection.
It is economical：Powdery paints is absolutely solid, this mean that almost absolutely formed coating without
Any loss, and can once reach required thickness in spraying, without several layers of spraying.
Efficiently：Powdery paints has remarkable mechanical performance, especially its impact resistance, pliability and case hardness,
Excellent antiseptic property and resistant to chemical media (acids, bases, solvent etc.) performance, also have very high for outdoor series of products
Weatherability, good protection can be provided to base material under the conditions of harsh climate.
《Coating industry Eleventh Five-Year Development Plan is planned》With《Coating industry science and technology Long-and Medium-term Development is planned》Clearly proposing will
Greatly develop environment-friendly powder coating.Coming 10 years, China will significantly cut down ratio of the conventional solvent coating in industrial coating,
Its portion is set to be fallen sharply by current 50% to 5%.And the market share of powdery paints will be risen to by current 18%
40%, finally with 10~15 years, new technology grafting and transformation are carried out to traditional coating industry, most conventional solvent coating at last
The market share is reduced to less than 1%.These development for being planned to environment-friendly powder coating provide opportunity.Include water-based painting from now on
Environment-friendly type coating including material and powdery paints will progressively substitute traditional solvent-borne coating, become the leading products in market.
Powdery paints kind is numerous, including a variety of colors, the product of various fine arts textures and bloom, unglazed and other effects.Tree
Lipid type includes the various series of products such as epoxy polyester (mixing) type, epoxy type, polyester-type, polyurethane-type, and kind substantially can be with
Solvent-borne type industrial antisepsis coating is suitable.But powdery paints due to do not possess to zinc-rich paint electrochemical cathodic protection effect,
So that powdery paints in heavy antisepsis field in application, galvanizing, electrogalvanizing or other cathodic protection system applications must be combined,
Which not only improves the significant wastage that project cost also result in resource.
The content of the invention
Technical problem：The defects of in order to solve the prior art, the present invention provides a kind of protection of steel structure surface to use VCI powder
Last bimetallic coating.
Technical solution：VCI powder bimetallic coating is used in a kind of steel structure surface protection provided by the invention, including following heavy
Measure the component of part：Including base-material, filler, VCI vapour phase inhibitors and auxiliary agent；The base-material includes 15 parts~25 parts epoxy powder trees
Fat, 15 parts~25 parts polyester powder resins, 5 parts~15 parts polyflons, 5 parts~15 parts organic siliconresins；It is described to fill out
Material includes 30 parts~60 parts zinc flakes, 1 part~5 parts flake aluminums, 5 parts~10 parts aluminium triphosphates, 5 parts~10 parts phosphoric acid
Zinc；The auxiliary agent is levelling agent, the one or more in conductive agent, degasser, light stabilizer；The quality of the base-material, filler
Than for 3:1~1:2.5；The quality of the VCI vapour phase inhibitors is the 5~10% of base-material and filler gross mass；The auxiliary agent
Quality is the 2~10% of base-material and filler gross mass.
Preferably, the levelling agent is poly- ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral
In one or more.
As another preferred embodiment, the conductive agent is non-metal powder, preferably graphite or amorphous carbon black.
As another preferred embodiment, the degasser is styrax, the one or more in bisamide wax.
As another preferred embodiment, the light stabilizer for polybutadiene acid esters, benzophenone, oxanilide it is a kind of or more
Kind.
As another preferred embodiment, the auxiliary agent is mass ratio (15~25)：(20~40)：(5~15)：The stream of (30~50)
Flat agent, conductive agent, degasser, light stabilizer.
Present invention also offers the preparation method of above-mentioned steel structure surface protection VCI powder bimetallic coating, including with
Lower step：
(1) by epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, three
Poly aluminium phosphate, trbasic zinc phosphate and auxiliary agent are added in high-speed mixer, are mixed and are crushed, and obtain uniform mixture；
(2) mixture made from step (1) is added in extruder, melting extrusion；Extrusion temperature：Preceding 80 DEG C of temperature~
100 DEG C, rear 110 DEG C~130 DEG C of temperature；
(3) heat that step (2) extruder is extruded is melted state species to roll by tablet press machine pressure roller, forms 1~2mm thickness
Ribbon, be broken into sheet material after cooling；
(4) obtained product will be added after sheet material repeat step (1) made from step (3) to step (3) 1~3 times
Enter and fine grinding is carried out in flour mill；Sieving；
(5) product of step (4) screening is placed in binding in binding machine with flake aluminum to handle；Binding parameter is：Initially
Mixing temperature is room temperature；Heating 0.5min~3min is 50 DEG C~70 DEG C to starting to bind temperature；3min~8min heat up to most
Height binding temperature is 75 DEG C~95 DEG C；Cool down 10min~20min to drop temperature be 20 DEG C~40 DEG C；
(6) sieve, to obtain the final product.
Beneficial effect：Steel structure surface protection provided by the invention both has powdery paints with VCI powder bimetallics coating
Good shielding action, but the cathodic protection with quite general zinc-rich paint acts on, while also with VCI vapour phase inhibitors
Corrosion mitigating effect, so as to reach the protection effect excellent to metal base.In addition, work of the present invention using different weather-proof resin blendings
Skill, makes such powdery paints have the weatherability more more excellent than general powdery paints.
VCI is the english abbreviation of vapour phase inhibitor (Volatile Corrosion Inhibitor), is through special synthesis
A kind of corrosion inhibitor that technique, compounding are prepared.It individually or can depend on suitable carrier, at normal temperatures and pressures directly
Gasification；In any spatial gaps in sealed environment by itself adjustable lasting volatilization and in operation unit, all
The mixed gas containing the VCI antirust factors can be filled, this gas can adsorb thereon when meeting with metal surface, form only one
Or the fine and close protection film layer of several molecule thicks；The protection film layer can effectively completely cut off metal surface and moisture, oxygen and other are harmful
The contact of atmospheric corrosion factor, suppresses to promote the generation of the electrochemical reaction of metal erosion, so as to reach optimal anti-corrosion effect
Fruit.
And zinc flake (piece zinc) is that spherical zinc powder is made by ball-milling technology.Piece zinc is as metal packing application
In coating, the coating formed has good protective effect to iron-based body, is mainly reflected in following three aspects：1st, electrochemistry side
Face, since the current potential of zinc is more negative than iron, has good electro-chemical protection to iron-based body；2nd, sealing and leakproofness,
Due to corrosion reaction thing (mainly basic zinc carbonate, the 2ZnCO of zinc powder3、3Zn(OH)2) be deposited between zinc particle, clog
Gap between pigment, but it is non-conductive, so as to play the role of closing to coating；3rd, shield effectiveness, due to flake zinc powder
Arranged in the coating parallel to film coated surface, and overlap each other and interlock, considerably increased water and corrosive medium penetrates coating
Distance, so as to improve the anti-corrosion capability of coating.
The synergistic effect of zinc flake and VCI in the present invention, since laminal filter has good shield effectiveness, when VCI points
When sub slowly release, the parallel bridging arrangement of laminal filter is provided for the film of one layer of closing, can significantly reduce
The diffusion rate of VCI molecules, so as to play good corrosion inhibition to metallic matrix.
Specifically, steel structure surface protection VCI powder bimetallics coating provided by the invention has following prominent
Advantage：
1st, rust-proof effect is comprehensive.No matter metal surface rule whether, can it is comprehensive prevent corrosion, do not stay any dead angle.
2nd, rust-proof life limit for length.Generally 2-5, it is specially treated, up to more than 10 years.
3rd, the unimolecule protective layer formed after VCI gasifications, will not damage the material of metal product, without any side effects.
4th, rustless property is distinguished.Even in the hot and humid high corrosion atmospheric environment high in salt as transport by sea
In, it can also make to be protected metal to exempt from corrosion infringement.
5th, it is hygienic, safe and environment-friendly.Injury will not be produced to human body, environmental pollution will not be caused.
6th, piece zinc, piece aluminium is as filler, then while ensure antiseptic property, increases the appearance of coating, the bottom of equivalent to
Finishing coat coats together, and artificial and material cost is greatly saved.
Embodiment
The raw material that the present invention uses is shown in Table 1.
The raw material that 1 present invention of table uses
Steel structure surface of the present invention is protected below and is further illustrated with VCI powder bimetallic coating.
Embodiment 1
VCI powder bimetallic coating is used in steel structure surface protection, includes the component of following parts by weight：Including base-material, filler,
VCI vapour phase inhibitors and auxiliary agent；The base-material includes 15 parts of epoxy powder resin E-12,25 parts of polyester powder resin T9401,15
Part polyflon PTFE, 5 parts of organic siliconresins；The filler include 30 parts of zinc flakes, 5 parts of flake aluminums, 5 part three
Poly aluminium phosphate, 10 parts of trbasic zinc phosphates；The auxiliary agent is mass ratio 15：40：5：30 levelling agents, conductive agent, degasser, light stabilizer；
The base-material, the mass ratio of filler are 3:1；The quality of the VCI vapour phase inhibitors is the 10% of base-material and filler gross mass；Institute
The quality for stating auxiliary agent is the 2% of base-material and filler gross mass.
The levelling agent is poly- ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral；The conduction
Agent is graphite or amorphous carbon black；The degasser is styrax, bisamide wax；The light stabilizer is polybutadiene acid esters.
Its preparation method, comprises the following steps：
(1) by epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, three
Poly aluminium phosphate, trbasic zinc phosphate and auxiliary agent are added in high-speed mixer, are mixed and are crushed, and obtain uniform mixture；
(2) mixture made from step (1) is added in extruder, melting extrusion；Extrusion temperature：Preceding 80 DEG C of temperature, after
110 DEG C of temperature；
(3) heat that step (2) extruder is extruded is melted state species to roll by tablet press machine pressure roller, forms 1~2mm thickness
Ribbon, be broken into sheet material after cooling；
(4) obtained product will be added after sheet material repeat step (1) made from step (3) to step (3) 1~3 times
Enter and fine grinding is carried out in flour mill；Sieving；
(5) product of step (4) screening is placed in binding in binding machine with flake aluminum to handle；Binding parameter is：Initially
Mixing temperature is room temperature；Heating 0.5min is 50 DEG C to starting to bind temperature；It is 75 DEG C that the 3min that heats up binds temperature to highest；It is cold
But 10min to drop temperature be 20 DEG C；
(6) sieve, to obtain the final product.
Embodiment 2
VCI powder bimetallic coating is used in steel structure surface protection, includes the component of following parts by weight：Including base-material, filler,
VCI vapour phase inhibitors and auxiliary agent；The base-material includes 25 parts of epoxy powder resins, 15 parts of polyester powder resins, 5 parts of polytetrafluoroethyl-nes
Olefine resin, 15 parts of organic siliconresins；The filler include 60 parts of zinc flakes, 1 part of flake aluminum, 10 parts of aluminium triphosphates, 5 parts
Trbasic zinc phosphate；The auxiliary agent is mass ratio 25：20：15：50 levelling agents, conductive agent, degasser, light stabilizer；The base-material, filler
Mass ratio be 1:2.5；The quality of the VCI vapour phase inhibitors is the 5% of base-material and filler gross mass；The quality of the auxiliary agent
For the 10% of base-material and filler gross mass.
The levelling agent is poly- ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral；The conduction
Agent is graphite or amorphous carbon black；The degasser is styrax, bisamide wax；The light stabilizer is benzophenone.
Its preparation method, comprises the following steps：
(1) by epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, three
Poly aluminium phosphate, trbasic zinc phosphate and auxiliary agent are added in high-speed mixer, are mixed and are crushed, and obtain uniform mixture；
(2) mixture made from step (1) is added in extruder, melting extrusion；Extrusion temperature：Preceding 100 DEG C of temperature, after
130 DEG C of temperature；
(3) heat that step (2) extruder is extruded is melted state species to roll by tablet press machine pressure roller, forms 1~2mm thickness
Ribbon, be broken into sheet material after cooling；
(4) obtained product will be added after sheet material repeat step (1) made from step (3) to step (3) 1~3 times
Enter and fine grinding is carried out in flour mill；Sieving；
(5) product of step (4) screening is placed in binding in binding machine with flake aluminum to handle；Binding parameter is：Initially
Mixing temperature is room temperature；Heating 3min is 70 DEG C to starting to bind temperature；It is 95 DEG C that the 8min that heats up binds temperature to highest；Cooling
20min to drop temperature be 40 DEG C；
(6) sieve, to obtain the final product.
Embodiment 3
VCI powder bimetallic coating is used in steel structure surface protection, includes the component of following parts by weight：Including base-material, filler,
VCI vapour phase inhibitors and auxiliary agent；The base-material includes 20 parts of epoxy powder resins, 20 parts of polyester powder resins, 10 parts of polytetrafluoros
Vinyl, 10 parts of organic siliconresins；The filler includes 45 parts of zinc flakes, 3 parts of flake aluminums, 7 parts of aluminium triphosphates, 8
Part trbasic zinc phosphate；The auxiliary agent is mass ratio 20：30：10：40 levelling agent, conductive agent, degasser, light stabilizer；The base-material,
The mass ratio of filler is 3:4；The quality of the VCI vapour phase inhibitors is the 5~10% of base-material and filler gross mass；The auxiliary agent
Quality be the 2~10% of base-material and filler gross mass.
The levelling agent is poly- ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral；The conduction
Agent is graphite or amorphous carbon black；The degasser is styrax, bisamide wax；The light stabilizer is oxanilide.
Its preparation method, comprises the following steps：
(1) by epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, three
Poly aluminium phosphate, trbasic zinc phosphate and auxiliary agent are added in high-speed mixer, are mixed and are crushed, and obtain uniform mixture；
(2) mixture made from step (1) is added in extruder, melting extrusion；Extrusion temperature：Preceding 90 DEG C of temperature, after
120 DEG C of temperature；
(3) heat that step (2) extruder is extruded is melted state species to roll by tablet press machine pressure roller, forms 1~2mm thickness
Ribbon, be broken into sheet material after cooling；
(4) obtained product will be added after sheet material repeat step (1) made from step (3) to step (3) 1~3 times
Enter and fine grinding is carried out in flour mill；Sieving；
(5) product of step (4) screening is placed in binding in binding machine with flake aluminum to handle；Binding parameter is：Initially
Mixing temperature is room temperature；Heating 1.5min is 60 DEG C to starting to bind temperature；It is 85 DEG C that the 5min that heats up binds temperature to highest；It is cold
But 15min to drop temperature be 30 DEG C；
(6) sieve, to obtain the final product.
VCI powder bimetallic coating properties are used in the steel structure surface protection of testing example 1 to 3, the results are shown in Table 2.
VCI powder bimetallic coating properties are used in the steel structure surface protection of 2 embodiment 1 to 3 of table
| Salt spray test time h | Ultraviolet aging resistance time h | Adhesive force (cross-hatching) | |
| Commercially available ordinary powder | 500 | 300~500h | 1 grade |
| 1 coating of embodiment | ≥3000h | ≥800h | 1 grade |
| 2 coating of embodiment | ≥3000h | ≥800h | 1 grade |
| 3 coating of embodiment | ≥3000h | ≥800h | 1 grade |
Claims (2)
1. VCI powder bimetallic coating is used in a kind of steel structure surface protection, it is characterised in that：It is made of following component：Base-material, fill out
Material, VCI vapour phase inhibitors and auxiliary agent；The base-material is made of the component of following parts by weight：15 parts ~ 25 parts epoxy powder resins,
15 parts ~ 25 parts polyester powder resins, 5 parts ~ 15 parts polyflons, 5 parts ~ 15 parts organic siliconresins；The filler by with
The component composition of lower parts by weight：30 parts ~ 60 parts zinc flakes, 1 part ~ 5 parts flake aluminums, 5 parts ~ 10 parts aluminium triphosphates, 5 parts ~
10 parts of trbasic zinc phosphates；The auxiliary agent is by mass ratio（15~25）：（20~40）：（5~15）：（30~50）Levelling agent, conductive agent, degassing
Agent, light stabilizer composition, the levelling agent is poly- ethyl propionate, in butyl acetate, dimethyl polysiloxane, polyvinyl butyral
One or more, the conductive agent is graphite or amorphous carbon black；The degasser is one in styrax, bisamide wax
Kind is a variety of, and the light stabilizer is polybutadiene acid esters, the one or more in benzophenone, oxanilide；The base
Material, the mass ratio of filler are 3:1~1:2.5；The quality of the VCI vapour phase inhibitors is the 5 ~ 10% of base-material and filler gross mass；
The quality of the auxiliary agent is the 2 ~ 10% of base-material and filler gross mass.
2. the preparation method of the steel structure surface protection VCI powder bimetallic coating described in claim 1, it is characterised in that：
Comprise the following steps：
（1）By epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, trimerization phosphorus
Sour aluminium, trbasic zinc phosphate and auxiliary agent are added in high-speed mixer, are mixed and are crushed, and obtain uniform mixture；
（2）By step（1）Obtained mixture is added in extruder, melting extrusion；Extrusion temperature：Preceding 80 DEG C ~ 100 DEG C of temperature,
110 DEG C ~ 130 DEG C of temperature afterwards；
（3）By step（2）The heat of extruder extrusion is melted state species and is rolled by tablet press machine pressure roller, forms the band of 1 ~ 2mm thickness
Shape thing, sheet material is broken into after cooling；
（4）By step（3）Obtained sheet material repeat step（1）To step（3）Obtained product is added after 1 ~ 3 time and is milled
Fine grinding is carried out in machine；Sieving；
（5）By step（4）The product of screening is placed in binding in binding machine with flake aluminum and handles；Binding parameter is：Initial mixing
Temperature is room temperature；Heating 0.5min ~ 3min is 50 DEG C ~ 70 DEG C to starting to bind temperature；3min ~ the 8min that heats up binds warm to highest
Spend for 75 DEG C ~ 95 DEG C；Cool down 10min ~ 20min to drop temperature be 20 DEG C ~ 40 DEG C；
（6）Sieving, to obtain the final product.
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| CN109486343A (en) * | 2018-09-17 | 2019-03-19 | 中航百慕新材料技术工程股份有限公司 | Graphene powder bimetallic coating and preparation method thereof |
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| CN114311366A (en) * | 2021-11-25 | 2022-04-12 | 泗洪百慕科技有限公司 | VCI powder bimetallic coating for steel structure surface protection and preparation process thereof |
| CN114102898A (en) * | 2021-11-29 | 2022-03-01 | 泗洪百慕科技有限公司 | VCI powder zinc-rich coating for steel structure surface protection and preparation process thereof |
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