CN105602415A - VCI powder zinc-rich paint for protecting surface of steel structure and preparation method thereof - Google Patents
VCI powder zinc-rich paint for protecting surface of steel structure and preparation method thereof Download PDFInfo
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/038—Anticorrosion agents
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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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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- 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
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- 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
- C09D7/63—Additives non-macromolecular organic
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention provides VCI powder zinc-rich paint for protecting the surface of a steel structure. The VCI powder zinc-rich paint is characterized by comprising, by weight, base material, filling, VCI (volatile corrosion inhibitor) and auxiliary, the base material comprises 20-50 parts of epoxy powder resin, 20-50 parts of polyester powder resin, 30-60 parts of sheet zinc powder, 5-10 parts of aluminum triphosphate and 5-10 parts of zinc phosphate, the auxiliary is one or multiple of flatting agent, electroconductive agent and degassing agent, a mass ratio of the base material to the filling is 3:1-3:7, mass of the VCI is 5-10 parts of total mass of the base material and the filling, and mass of the auxiliary is 2-10 parts of the total mass of the base material and the filling. The VCI powder zinc-rich paint has good shielding effect that powder paint has, has cathode protecting effect equivalent to common zinc-rich paint and has corrosion inhibiting effect that the VCI has, so that excellent protecting effect on metal base materials is realized.
Description
Technical field
The invention belongs to paint field, particularly a kind of steel structure surface protection VCI powder zinc-rich paint and preparation method thereof.
Background technology
Galvanizing by dipping is again in galvanizing, is the steel member after rust cleaning is immersed in the zinc liquid of 600 DEG C of left and right high temperature melt, makes steel component surface adhere to zinc layer, and zinc coating thickness must not be less than 65 μ m to 5mm with lower thin sheet, and 5mm and above slab are not less than 86 μ m. As the effective anti-corrosion of metal mode of one, galvanizing technique has been widely used on the metal structure facility of every profession and trade.
As shown in Figure 1, but existing galvanizing construction technology has many-sided defect to existing galvanizing construction technology:
(1) what acid cleaning process adopted is that 20% hydrochloric acid can produce a large amount of acid waste liquids, what the processing stage of activation and exposure, adopt is that ZnCl2, NH4Cl solution can produce a large amount of industrial wastewaters, if directly discharge meeting causes serious pollution to water resource, soil resource, and cost for wastewater treatment is higher;
(2) in this technical process, need to consume a large amount of coal resources, to maintain zinc groove temperature, energy waste is serious. The temperature of zinc groove needs long term maintenance more than 470 DEG C, and oven dry need to maintain 180 DEG C of left and right, not only needs to consume a large amount of resources such as coal, natural gas, and can produce a large amount of zinc fume pollutions. Taking certain surface treatment factory as example, this factory processes 50,000 tons of left and right of crane span structure every year, per ton need to using about coal 55kg, the carbon dioxide of standard coal burning and exhausting 2620kg per ton, known this factory arranges 7205 tons of left and right of carbon amount (these data do not comprise that the non-working time maintains the coal that zinc groove consumes) every year, belongs to high row's carbon industry.
(3) complicated construction technique, construction environment is severe. In work progress, have large quantity of exhaust gas, waste liquid to produce, and intractability is large, and surrounding enviroment are polluted.
(4) zinc resource waste is serious. Metallic zinc is non-renewable resources, and this technique metallic zinc quantity of material used is large, and it is general to obtain coating performance.
Therefore, the anticorrosion common employing zinc-rich paint of existing steel member is realized. It is the end that the anticorrosive coating of indoor and outdoor steel construction is generally selected zinc-rich paint, and compound intermediate coat, finish paint use, and its antiseptic property mainly utilizes the cathodic protection effect of zinc rich primer; The features such as have a cost low, maintenance cost is not high, and antiseptic property is good.
Zinc-rich paint comprises inorganic zinc coating and organic zinc-rich paint, and wherein inorganic zinc coating comprises again aqueous inorganic zinc-enriched coating and the molten inorganic zinc coating of alcohol. This kind of coating has electro-chemical protection to iron and steel, and rustless property is good; Sea water resistance, oil resistant, salt tolerant class, atmospheric corrosion resistance, good conductivity, does not affect welding procedure. Inorganic zinc coating can use in hot environment for a long time more than 400 DEG C; Organic zinc-rich paint can make the priming paint of anticorrosive paint, and as the anticorrosive paint matching system that " epoxy zinc rich primer+epoxy micaceous iron paint+chlorinated rubber finish " forms, can reach 7-15 service life. Therefore the anticorrosive measure such as boats and ships both domestic and external, offshore oil production facility, heat distribution pipeline, bridge, petrochemical equipment pipeline and high frame iron tower, adopts zinc-rich paint as anticorrosive paint more and more.
But in recent years, because environmental pollution is more and more serious, country is increasing to the dynamics of environmental improvement. In traditional organic zinc-rich paint, owing to containing the hazardous solvents such as a large amount of benzene, dimethylbenzene, butyl acetate, seriously restrict the development of such coating. Aqueous inorganic zinc-enriched coating is owing to having the feature of low VOC content and be subject to the favor in market. But due to the characteristic of aqueous inorganic zinc-enriched coating itself, its requirement to pretreatment of base material higher (Sa2.5 level), and the pliability of coating is poor, and the existence of these shortcomings is restricted the development of aqueous inorganic zinc-enriched coating. Although the molten inorganic zinc coating of alcohol has solved aqueous inorganic zinc-enriched coating pliability to a certain extent and pre-treatment requires high problem, the VOC content of itself is higher, is faced with equally the development problem of organic zinc-rich paint.
The environment friendly of powdery paints and energy-saving and emission-reduction advantage highlight day by day in recent years, and industry faces good opportunity to develop. Powdery paints is as solventless coatings, meets in the world popular " four E " principle (economy, environmental protection, efficient, performance is remarkable), and welcomed by the people. Its feature is as follows:
Technique is simple: powdery paints is to utilize electrostatic generator to make powder particle charged, be adsorbed on equably on metal base, and then by high-temperature fusion and the curing a kind of technology that is transformed into hard protective finish, small investment, coating process is simple and convenient;
Clean: powdery paints is not containing solvent, and this is undeniable advantage for growing in the world protection of the environment consciousness. Meanwhile, the powdery paints that lands of spraying can recycling, is aided with cyclone dust removal or filter bag except device when spraying, and making powdery paints is the most clean coating variety at present, can accomplish 100% environmental protection.
Economical: powdery paints is solid absolutely, this just means and almost absolutely forms coating and without any loss, and once can reach desired thickness in the time of spraying, need not spray several layers.
Efficient: 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 there is very high weatherability for outdoor series of products, can under harsh climate condition, provide good protection to base material.
" planning of coating industry Eleventh Five-Year Development Plan " and " planning of coating industry science and technology Long-and Medium-term Development " all clearly proposes to greatly develop environment-friendly powder coating. Coming 10 years, China will significantly cut down the ratio of conventional solvent coating in industrial coating, and its portion is fallen sharply to 5% by current 50%. And the market share of powdery paints will rise to 40% by current 18%, finally used for 10～15 years, traditional coating industry is carried out to new technology grafting and transformation, conventional solvent Coating Market share is reduced to below 1% the most at last. These development that are planned to environment-friendly powder coating provide opportunity. Environment-friendly type coating including water paint and powdery paints will progressively replace conventional solvent type coating from now on, become the leading products in market.
Powdery paints kind is numerous, comprises shades of colour, the product of various fine arts textures and Gao Guang, unglazed texts. Resinous type comprises the various series of products such as epoxy polyester (mixing) type, epoxy type, polyester-type, polyurethane-type, and kind substantially can be suitable with solvent-borne type industrial antisepsis coating. But; powdery paints is due to the electrochemical cathodic protection effect not possessing to zinc-rich paint; make powdery paints in the time of heavy corrosion-resistant field application, must be in conjunction with galvanizing, electrogalvanizing or the application of other cathodic protection systems, this has not only improved construction costs and has also caused the significant wastage of resource.
Summary of the invention
Technical problem: in order to address the deficiencies of the prior art, the invention provides a kind of steel structure surface protection VCI powder zinc-rich paint.
Technical scheme: a kind of steel structure surface provided by the invention protects with VCI powder zinc-rich paint, comprises the component of following weight portion: comprise base-material, filler, VCI vapour phase inhibitor and auxiliary agent; Described base-material comprise 20～50 parts of epoxy powder resins, 20～50 parts of polyester powder resins; Described filler comprises 30～60 parts of zinc flakes, 5～10 parts of aluminium triphosphates, 5～10 parts of trbasic zinc phosphates; Described auxiliary agent be levelling agent, conductive agent, degasser, in one or more; The mass ratio of described base-material and filler is 3:1～3:7; The quality of described VCI vapour phase inhibitor is 5～10% of base-material and filler gross mass; The quality of described auxiliary agent is 2～10% of base-material and filler gross mass.
As preferably, described levelling agent is one or more in poly-ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral.
Preferred as another kind, described conductive agent is non-metal powder, preferably graphite or amorphous carbon black.
Preferred as another kind, described degasser is a kind of in styrax, bisamide wax or two kinds.
Preferred as another kind, described auxiliary agent is mass ratio (25～50): (35～60): one or more in the levelling agent of (5～20), conductive agent, degasser.
The present invention also provides the preparation method of above-mentioned steel structure surface protection VCI powder zinc-rich paint, comprises the following steps:
(1) epoxy powder resin, polyester powder resin, zinc flake, aluminium triphosphate, trbasic zinc phosphate and auxiliary agent are joined in high-speed mixer, mix and fragmentation, obtain uniform mixture;
(2) mixture step (1) being made joins in extruder, melt extrudes; Extrusion temperature: 80 DEG C～100 DEG C of front temperature, 110 DEG C～130 DEG C of rear temperature;
(3) heat of step (2) extruder being extruded is melted state material through the roll extrusion of tablet press machine pressure roller, forms the ribbon of 1～2mm thickness, is broken into sheet material after cooling;
(4) the sheet material repeating step (1) step (3) being made carries out fine grinding to the product obtaining being added after step (3) 1～3 times in flour mill;
(5) sieve, to obtain final product.
Beneficial effect: steel structure surface protection provided by the invention had both had with VCI powder zinc-rich paint the shielding action that powdery paints is good; there is again the cathodic protection effect of quite general zinc-rich paint; also there is the corrosion mitigating effect of VCI vapour phase inhibitor simultaneously, thereby reach the protection effect to metal base excellence. In addition, the present invention adopts the technique of different weather-proof resin Mixed Pinyins, makes such powdery paints have the weatherability more more excellent than general powdery paints.
VCI is the english abbreviation of vapour phase inhibitor (VolatileCorrosionInhibitor), is through special synthesis technique, the composite a kind of corrosion inhibitor being prepared from. It can separately or depend on suitable carrier, at normal temperatures and pressures direct gasification; In sealed environment, make in the gap, any space in operation unit by self adjustable lasting volatilization, the full mist that contains the antirust factor of VCI in capital, this gas can adsorb on it while meeting with metal surface, forms and only has one or the thick fine and close protective film of several molecule; This protective film can effectively completely cut off contacting of metal surface and moisture, oxygen and other harmful atmospheric corrosion factors, suppresses the generation of the electrochemical reaction of impelling metal erosion, thereby reaches best anti-corrosion effect.
And zinc flake (sheet zinc) is that spherical zinc powder is made through ball-milling technology. Sheet zinc is as in metal packing application of paint, the coating forming has good protective effect to iron-based body, be mainly reflected in following three aspects: 1, electrochemistry aspect, because the current potential of zinc is more negative than iron, therefore has good electro-chemical protection to iron-based body; 2, sealing and sealing, due to the corrosion reaction thing of zinc powder (be mainly basic zinc carbonate, 2ZnCO3、3Zn(OH)2) be deposited between zinc particle, the space between filling pigment, non-conductive again, thus coating has been played to the effect of sealing; 3, shield effectiveness, arranges because flake zinc powder is parallel to film coated surface in coating, and overlaps each other and interlocks, and has greatly increased water and corrosive medium and has penetrated the distance of coating, thereby improved the anti-corrosion capability of coating.
The synergy of zinc flake and VCI in the present invention, because laminal filter has good shield effectiveness, in the time that VCI molecule slowly discharges, the parallel bridging arrangement of laminal filter is its film that provides one deck to seal, can reduce significantly the disperse speed of VCI molecule, thereby metallic matrix is played to good corrosion inhibition.
Particularly, steel structure surface protection provided by the invention has following outstanding advantage with VCI powder zinc-rich paint:
1, rust-proof effect is comprehensive. No matter whether metal surface rule, all can comprehensively prevent corrosion, do not stay any dead angle.
2, rust-proof life limit for length. Be generally 2-5, through specially treated, can reach more than 10 years.
3, the unimolecule protective layer forming after VCI gasification, can not damage the material of metallic article, without any side effects.
4, rustless property is distinguished. Even if in the height corrosion atmospheric environment hot and humid high in salt as transport by sea, also can make protected metal exempt from corrosion infringement.
5, health, safety, environmental protection. Can not produce injury to human body, can not cause environmental pollution.
Brief description of the drawings
Fig. 1 is existing galvanizing construction technology.
Detailed description of the invention
The raw material that the present invention uses is in table 1.
The raw material that table 1 the present invention uses
Wherein, described VCI vapour phase inhibitor is: one or more arbitrary proportions of 4-(N, N-di-n-butyl)-amine methyl morpholine, benzoic acid morpholine, amino acid methyl ester, phosphoric acid bicyclohexylamine, o-nitrobenzoic acid six methine imines, BTA mix; It consists of prior art.
Below steel structure surface protection of the present invention is further illustrated with VCI powder zinc-rich paint.
Embodiment 1
Steel structure surface protects with VCI powder zinc-rich paint, comprises the component of following weight portion: comprise base-material, filler, VCI vapour phase inhibitor and auxiliary agent; Described base-material comprises 20 parts of epoxy powder resin E-12,50 parts of polyester powder resin T940; Described filler comprises 30 parts of zinc flakes, 10 parts of aluminium triphosphates, 10 parts of trbasic zinc phosphates; Described auxiliary agent is one or more in the levelling agent, conductive agent, degasser of mass ratio 25:60:5; The mass ratio of described base-material and filler is 3:7; The quality of described VCI vapour phase inhibitor is 10% of base-material and filler gross mass; The quality of described auxiliary agent is 2% of base-material and filler gross mass.
Levelling agent is poly-ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral; Conductive agent is graphite or amorphous carbon black; Degasser is styrax, bisamide wax; Described light stabilizer is poly-succinic ester.
Its preparation method, comprises the following steps:
(1) epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, aluminium triphosphate, trbasic zinc phosphate and auxiliary agent are joined in high-speed mixer, mix and fragmentation, obtain uniform mixture;
(2) mixture step (1) being made joins in extruder, melt extrudes; Extrusion temperature: 80 DEG C of front temperature, 110 DEG C of rear temperature;
(3) heat of step (2) extruder being extruded is melted state material through the roll extrusion of tablet press machine pressure roller, forms the ribbon of 1～2mm thickness, is broken into sheet material after cooling;
(4) the sheet material repeating step (1) step (3) being made carries out fine grinding to the product obtaining being added after step (3) 1～3 times in flour mill;
(5) sieve, to obtain final product.
Technological process is: mix → melt extrude → compressing tablet is cooling → pulverizing → fine grinding → screening.
Embodiment 2
Steel structure surface protects with VCI powder zinc-rich paint, comprises the component of following weight portion: comprise base-material, filler, VCI vapour phase inhibitor and auxiliary agent; Described base-material comprises 50 parts of epoxy powder resin E-12,30 parts of polyester powder resin T9401; Described filler comprises 60 parts of zinc flakes, 5 parts of aluminium triphosphates, 5 parts of trbasic zinc phosphates; Described auxiliary agent be mass ratio 50:35:20 levelling agent, conductive agent, degasser, in one or more; The mass ratio of described base-material and filler is 3:1; The quality of described VCI vapour phase inhibitor is 5% of base-material and filler gross mass; The quality of described auxiliary agent is 10% of base-material and filler gross mass.
Levelling agent is poly-ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral; Conductive agent is graphite or amorphous carbon black; Degasser is styrax, bisamide wax.
Its preparation method, comprises the following steps:
(1) epoxy powder resin, polyester powder resin, polyflon, organic siliconresin, zinc flake, aluminium triphosphate, trbasic zinc phosphate and auxiliary agent are joined in high-speed mixer, mix and fragmentation, obtain uniform mixture;
(2) mixture step (1) being made joins in extruder, melt extrudes; Extrusion temperature: 100 DEG C of front temperature, 130 DEG C of rear temperature;
(3) heat of step (2) extruder being extruded is melted state material through the roll extrusion of tablet press machine pressure roller, forms the ribbon of 1～2mm thickness, is broken into sheet material after cooling;
(4) the sheet material repeating step (1) step (3) being made carries out fine grinding to the product obtaining being added after step (3) 1～3 times in flour mill;
(5) sieve, to obtain final product.
Technological process is: mix → melt extrude → compressing tablet is cooling → pulverizing → fine grinding → screening.
Embodiment 3
Steel structure surface protects with VCI powder zinc-rich paint, comprises the component of following weight portion: comprise base-material, filler, VCI vapour phase inhibitor and auxiliary agent; Described base-material comprises 40 parts of epoxy powder resin E-12,40 parts of polyester powder resin T9401; Described filler comprises 45 parts of zinc flakes, 7 parts of aluminium triphosphates, 8 parts of trbasic zinc phosphates; Described auxiliary agent is one or more in the levelling agent, conductive agent, degasser of mass ratio 35:45:15; The mass ratio of described base-material and filler is 3:4; The quality of described VCI vapour phase inhibitor is 7% of base-material and filler gross mass; The quality of described auxiliary agent is 6% of base-material and filler gross mass.
Levelling agent is poly-ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral; Conductive agent is graphite or amorphous carbon black; Degasser is styrax, bisamide wax; .
Its preparation method, comprises the following steps:
(1) by epoxy powder resin, polyester powder resin,, zinc flake, aluminium triphosphate, trbasic zinc phosphate and auxiliary agent join in high-speed mixer, mixes and broken, obtains uniform mixture;
(2) mixture step (1) being made joins in extruder, melt extrudes; Extrusion temperature: 90 DEG C of front temperature, 120 DEG C of rear temperature;
(3) heat of step (2) extruder being extruded is melted state material through the roll extrusion of tablet press machine pressure roller, forms the ribbon of 1～2mm thickness, is broken into sheet material after cooling;
(4) the sheet material repeating step (1) step (3) being made carries out fine grinding to the product obtaining being added after step (3) 1～3 times in flour mill;
(5) sieve, to obtain final product.
Technological process is: mix → melt extrude → compressing tablet is cooling → pulverizing → fine grinding → screening.
VCI powder zinc-rich paint performance for the steel structure surface protection of test implementation example 1 to 3, the results are shown in Table 2.
VCI powder zinc-rich paint performance for the steel structure surface protection of table 2 embodiment 1 to 3
| Salt spray test time h | Ultraviolet aging resistance time h | Adhesive force (cross-hatching) | |
| Commercially available ordinary powder | 500 | 500 | 1 grade |
| Embodiment 1 coating | ≥3000h | ≥800h | 1 grade |
| Embodiment 2 coating | ≥3000h | ≥800h | 1 grade |
| Embodiment 3 coating | ≥3000h | ≥800h | 1 grade |
Claims (6)
1. a VCI powder zinc-rich paint for steel structure surface protection, is characterized in that: the component that comprises following weight portion:Comprise base-material, filler, VCI vapour phase inhibitor and auxiliary agent; Described base-material comprise 20～50 parts of epoxy powder resins,20～50 parts of polyester powder resins; Described filler comprises 30～60 parts of zinc flakes, 5～10 parts of aluminium triphosphates, 5～10Part trbasic zinc phosphate; Described auxiliary agent is one or more in levelling agent, conductive agent, degasser; Described base-material and fillerMass ratio be 3:1～3:7; The quality of described VCI vapour phase inhibitor is 5～10% of base-material and filler gross mass; InstituteThe quality of stating auxiliary agent is 2～10% of base-material and filler gross mass.
2. a kind of steel structure surface protection VCI powder zinc-rich paint according to claim 1, is characterized in that: instituteState levelling agent and be a kind of in poly-ethyl propionate, butyl acetate, dimethyl polysiloxane, polyvinyl butyral orMultiple.
3. a kind of steel structure surface protection VCI powder zinc-rich paint according to claim 1, is characterized in that: instituteStating conductive agent is non-metal powder, preferably graphite or amorphous carbon black.
4. a kind of steel structure surface protection VCI powder zinc-rich paint according to claim 1, is characterized in that: instituteState degasser and be a kind of in styrax, bisamide wax or two kinds.
5. a kind of steel structure surface protection VCI powder zinc-rich paint according to claim 1, is characterized in that: instituteStating auxiliary agent is mass ratio (25～50): (35～60): the one in the levelling agent of (5～20), conductive agent, degasserOr several.
6. the preparation method of VCI powder zinc-rich paint for the protection of the steel structure surface described in claim 1 to 4 any one, itsBe characterised in that: comprise the following steps:
(1) by epoxy powder resin, polyester powder resin,, zinc flake, aluminium triphosphate, trbasic zinc phosphate and auxiliary agent addEnter in high-speed mixer, mix and fragmentation, obtain uniform mixture;
(2) mixture step (1) being made joins in extruder, melt extrudes; Extrusion temperature: front temperature80 DEG C～100 DEG C, 110 DEG C～130 DEG C of rear temperature;
(3) heat of step (2) extruder being extruded is melted state material through the roll extrusion of tablet press machine pressure roller, forms 1～2mm thickThe ribbon of degree, is broken into sheet material after cooling;
(4) the sheet material repeating step (1) step (3) being made to after step (3) 1～3 times by the product obtainingAdd and in flour mill, carry out fine grinding;
(5) sieve, to obtain final product.
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| CN201610026974.6A CN105602415B (en) | 2016-01-15 | 2016-01-15 | Steel structure surface protection VCI powder zinc-rich paint and preparation method thereof |
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| CN201610026974.6A CN105602415B (en) | 2016-01-15 | 2016-01-15 | Steel structure surface protection VCI powder zinc-rich paint and preparation method thereof |
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| CN105602415A true CN105602415A (en) | 2016-05-25 |
| CN105602415B CN105602415B (en) | 2018-05-22 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987666A (en) * | 2017-12-01 | 2018-05-04 | 成都信达高分子材料有限公司 | A kind of zinc-rich double antiseptic powder coating |
| CN108003685A (en) * | 2017-12-01 | 2018-05-08 | 成都信达高分子材料有限公司 | A kind of fine arts zinc-rich anti-corrosive powder paint |
| CN109265935A (en) * | 2018-09-06 | 2019-01-25 | 维希艾防锈新材料(上海)有限公司 | VCI nanometers of intercept type rust-preventing films |
| CN109401532A (en) * | 2018-09-17 | 2019-03-01 | 中航百慕新材料技术工程股份有限公司 | Graphene powder zinc-rich paint and preparation method thereof |
| CN110240743A (en) * | 2019-06-11 | 2019-09-17 | 苏州特聚新材料科技有限公司 | A kind of intercept type antirust film and preparation method |
| CN110791180A (en) * | 2019-11-01 | 2020-02-14 | 江苏振光电力设备制造有限公司 | VCI coating for iron tower |
| CN111001981A (en) * | 2019-11-01 | 2020-04-14 | 江苏振光电力设备制造有限公司 | Preparation method of weather-resistant bolt for iron tower |
| 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107987666A (en) * | 2017-12-01 | 2018-05-04 | 成都信达高分子材料有限公司 | A kind of zinc-rich double antiseptic powder coating |
| CN108003685A (en) * | 2017-12-01 | 2018-05-08 | 成都信达高分子材料有限公司 | A kind of fine arts zinc-rich anti-corrosive powder paint |
| CN109265935A (en) * | 2018-09-06 | 2019-01-25 | 维希艾防锈新材料(上海)有限公司 | VCI nanometers of intercept type rust-preventing films |
| CN109401532A (en) * | 2018-09-17 | 2019-03-01 | 中航百慕新材料技术工程股份有限公司 | Graphene powder zinc-rich paint and preparation method thereof |
| CN110240743A (en) * | 2019-06-11 | 2019-09-17 | 苏州特聚新材料科技有限公司 | A kind of intercept type antirust film and preparation method |
| CN110791180A (en) * | 2019-11-01 | 2020-02-14 | 江苏振光电力设备制造有限公司 | VCI coating for iron tower |
| CN111001981A (en) * | 2019-11-01 | 2020-04-14 | 江苏振光电力设备制造有限公司 | Preparation method of weather-resistant bolt for iron tower |
| 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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