CN111482345A - Surface corrosion-resistant treatment process for iron artware - Google Patents
Surface corrosion-resistant treatment process for iron artware Download PDFInfo
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- CN111482345A CN111482345A CN202010191003.3A CN202010191003A CN111482345A CN 111482345 A CN111482345 A CN 111482345A CN 202010191003 A CN202010191003 A CN 202010191003A CN 111482345 A CN111482345 A CN 111482345A
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- 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
- B05D7/14—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 to metal, e.g. car bodies
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- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- 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
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- 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
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/08—Anti-corrosive paints
-
- 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
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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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
Abstract
The invention discloses a corrosion-resistant treatment process for the surface of an iron craft; the surface of the iron craft is cleaned and then dried; dipping the surface of the iron craft after being cleaned and dried, and then drying to obtain a dipped iron craft; coating a corrosion-resistant coating on the surface of the dipped iron craft, and then drying, curing and forming a film; the method can form a strong adsorption layer on the surface of the iron craft through the dipping treatment of the iron craft, and can form strong mutual adsorption between the intermediate bridge and the prepared corrosion-resistant coating through the strong adsorption layer, so as to form a stable coating through solidification, thereby greatly improving the binding force of the coating on the iron craft, ensuring the service life of the coating and avoiding the occurrence of short-term cracking.
Description
Technical Field
The invention belongs to the technical field of artware, and particularly relates to a surface corrosion-resistant treatment process for an iron artware.
Background
Iron is very widely distributed in nature, but human discovery and utilization of iron is much later than that of gold and copper. Since natural elemental iron is very rare on earth and it is prone to oxidation rusting, coupled with its melting point (1812K) being much higher than copper (1356K), it is more difficult to smelt than copper. The iron which is found by human beings at the earliest is meteorite falling from the sky, the percentage of iron in the meteorite is high, the meteorite is a mixture of iron and metals such as nickel, cobalt and the like, and the iron is always regarded as the most precious metal with mysterious property when a method for melting iron ore is not yet available and the pig iron cannot be obtained by human beings in large quantities. With the development of time, people find that various artworks made of iron are really beautiful and can be used as ornaments and home furnishing goods.
The surface of the iron craft needs to be treated to prevent the surface of the iron craft from being corroded to influence the beauty of the iron craft.
In the prior art, the surface of an iron craft is coated with a coating for surface treatment, for example, application number 201710624849.X, a special coating for iron crafts, and the invention discloses a special coating for iron crafts, which is characterized in that: the paint comprises three layers, namely a bottom layer paint, a middle layer paint and a surface layer paint. Wherein the primer coating is quick-drying, strong in permeability, excellent in adhesive force, excellent in sealing property, compact and neat in coating, free of color bleeding, and free of cracking and swelling; wherein, the middle layer coating has high viscosity and good waterproofness; the surface coating has strong adhesive force, extremely high hardness, scratch resistance, impact resistance and capability of emitting sandalwood smell, however, the styrene-acrylic emulsion mainly has the problems of higher minimum film forming temperature (MFT), poor film forming performance, poorer emulsion rheology and general corrosion resistance.
Disclosure of Invention
The invention aims to provide a surface corrosion-resistant treatment process for an iron craft, which aims to overcome the defects in the prior art.
The technical scheme adopted by the invention is as follows:
a corrosion-resistant treatment process for the surface of an iron craft is characterized in that the surface of the iron craft is cleaned and then dried;
dipping the surface of the iron craft after being cleaned and dried, and then drying to obtain a dipped iron craft;
coating a corrosion-resistant coating on the surface of the dipped iron craft, and then drying, curing and forming a film;
the corrosion-resistant coating is hydroxypropyl acrylate-epoxy resin coating.
The cleaning treatment is to respectively clean the iron craft by sequentially adopting an organic solvent and clear water;
the organic solvent adopts acetone;
the water temperature when the clean water is used for cleaning is 80 ℃.
The drying is carried out by putting the mixture into a drying oven for drying, and the drying temperature is 75 ℃.
The dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 30-35min, and the dipping temperature is 50-55 ℃.
The preparation method of the impregnation treatment liquid comprises the following steps:
adding a solvent tetrahydrofuran into a reaction kettle, introducing inert gas into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 1-2 ℃, stirring at the rotating speed of 150r/min for 3-5min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 2-3 h, then adding dimethylchlorosilane, and continuing to stir for reacting for 8-10 h to obtain the product;
the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 3-4: 40;
the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1;
the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1: 10-13.
The mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.3-0.5%.
The hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight:
15-18 parts of hydroxypropyl acrylate, 32-36 parts of epoxy resin, 1.2-1.5 parts of flatting agent, 22-25 parts of butanol, 16-19 parts of xylene, 10-12 parts of hydroxy acrylic resin and 6-7 parts of nano filler.
The leveling agent is silicone oil, and by adding the silicone oil, the surface tension of the finishing liquid can be effectively reduced, the leveling property and uniformity of the finishing liquid can be improved, the permeability of the coating can be improved, the possibility of generating spots and stains during brushing can be reduced, the coverage property is increased, and the film forming is uniform and natural.
The nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 18-20.
The drying and curing temperature is 40-45 ℃.
The nano-filler is treated to improve the compatibility of the nano-filler, nano-graphene with the mass fraction of 1.2% is uniformly dispersed in acetone, then the nano-graphene is added into a reaction kettle to be heated to 60 ℃, cyanuric chloride is added, the mixture is stirred in an ice bath at the rotating speed of 500r/min for 30min, aminobenzenesulfonic acid is added dropwise, the mixture is continuously stirred for 1 hour, nano-silica is added, the mixture is uniformly stirred, sodium bicarbonate solution is added, the mixture is continuously stirred for 40min, then the mixture is subjected to suction filtration, washed to be neutral by clear water, and dried to be constant weight; the mass ratio of cyanuric chloride to aminobenzenesulfonic acid to nano silicon dioxide is 1:2: 5;
the volume ratio of the sodium bicarbonate solution to the acetone is 1: 3;
the concentration of the sodium bicarbonate solution was 1.5 mol/L.
The nano-fillers are treated to a certain degree, so that the treated nano-graphene and nano-silica can be better and uniformly dispersed into an epoxy resin and hydroxypropyl acrylate coating system, a stable three-dimensional network structure can be promoted to be formed through the higher crosslinking density of the epoxy resin, and meanwhile, the nano-graphene and the nano-silica play an extremely important role of connecting points in the epoxy resin and hydroxypropyl acrylate system, so that the impedance of the coating in a low-frequency region can be greatly improved and is close to 5.7 × 105Ω·cm2Compared with the conventional epoxy resin coating, the coating has the advantages that the coating is higher by about 3.8 orders of magnitude,the coating can play a certain role in blocking Cl−And O2The diffusion to the matrix effectively improves the corrosion resistance of the iron craft.
Has the advantages that: the process can form a coating with higher wear resistance on the surface of the iron craft, thereby better preventing the phenomenon that the surface coating is seriously worn and the surface coating is exposed after the iron craft is touched for a long time.
Detailed Description
A corrosion-resistant treatment process for the surface of an iron craft is characterized in that the surface of the iron craft is cleaned and then dried;
dipping the surface of the iron craft after being cleaned and dried, and then drying to obtain a dipped iron craft;
coating a corrosion-resistant coating on the surface of the dipped iron craft, and then drying, curing and forming a film;
the corrosion-resistant coating is hydroxypropyl acrylate-epoxy resin coating.
The cleaning treatment is to respectively clean the iron craft by sequentially adopting an organic solvent and clear water;
the organic solvent adopts acetone;
the water temperature when the clean water is used for cleaning is 80 ℃.
The drying is carried out by putting the mixture into a drying oven for drying, and the drying temperature is 75 ℃.
The dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 30-35min, the dipping temperature is 50-55 ℃, the dipping treatment of the iron craft can form a strong adsorption layer on the surface of the iron craft, and the strong adsorption layer can form strong mutual adsorption between the intermediate bridge intermediate and the prepared corrosion-resistant coating, so that a stable coating is formed by solidification, the binding force of the coating on the iron craft is greatly improved, the service life of the coating is ensured, and the short-term cracking phenomenon is avoided.
The preparation method of the impregnation treatment liquid comprises the following steps:
adding a solvent tetrahydrofuran into a reaction kettle, introducing inert gas into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 1-2 ℃, stirring at the rotating speed of 150r/min for 3-5min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 2-3 h, then adding dimethylchlorosilane, and continuing to stir for reacting for 8-10 h to obtain the product;
the inert gas can be any one of nitrogen, helium and neon;
the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 3-4: 40;
the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1;
the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1: 10-13.
The mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.3-0.5%.
The hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight:
15-18 parts of hydroxypropyl acrylate, 32-36 parts of epoxy resin, 1.2-1.5 parts of flatting agent, 22-25 parts of butanol, 16-19 parts of xylene, 10-12 parts of hydroxy acrylic resin and 6-7 parts of nano filler.
Parameters of the hydroxyl acrylic resin:
clear liquid in appearance;
nonvolatile/% 51.8;
a specific gravity of about 1.01;
viscosity/(mPa · s) 3200;
acid value/(mgKOH/g) 4.25;
an OH number of about 44.3;
Tg/deg.C about 51.8;
the leveling agent is silicone oil, and by adding the silicone oil, the surface tension of the finishing liquid can be effectively reduced, the leveling property and uniformity of the finishing liquid can be improved, the permeability of the coating can be improved, the possibility of generating spots and stains during brushing can be reduced, the coverage property is increased, and the film forming is uniform and natural.
The nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 18-20.
The nano-filler is treated to improve the compatibility of the nano-filler, nano-graphene with the mass fraction of 1.2% is uniformly dispersed in acetone, then the nano-graphene is added into a reaction kettle to be heated to 60 ℃, cyanuric chloride is added, the mixture is stirred in an ice bath at the rotating speed of 500r/min for 30min, aminobenzenesulfonic acid is added dropwise, the mixture is continuously stirred for 1 hour, nano-silica is added, the mixture is uniformly stirred, sodium bicarbonate solution is added, the mixture is continuously stirred for 40min, then the mixture is subjected to suction filtration, washed to be neutral by clear water, and dried to be constant weight; the mass ratio of cyanuric chloride to aminobenzenesulfonic acid to nano silicon dioxide is 1:2: 5;
the volume ratio of the sodium bicarbonate solution to the acetone is 1: 3;
the concentration of the sodium bicarbonate solution was 1.5 mol/L.
The drying and curing temperature is 40-45 ℃.
The following will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The surface corrosion-resistant treatment process of the iron craft comprises the steps of cleaning the surface of the iron craft, then putting the iron craft into a drying box for drying, wherein the drying temperature is 75 ℃, the cleaning treatment is to respectively clean the iron craft by sequentially adopting acetone and clear water, and the water temperature is 80 ℃ when the clear water is cleaned; and (3) carrying out surface dipping treatment on the iron craft after cleaning and drying treatment, wherein the dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 30min, and the dipping temperature is 50 ℃. The preparation method of the impregnation treatment liquid comprises the following steps: adding a solvent tetrahydrofuran into a reaction kettle, introducing nitrogen into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 1 ℃, stirring at the rotating speed of 150r/min for 3min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 2-3 h, then adding dimethylchlorosilane, continuing to stir for reacting for 8 h, and then putting the mixture into a drying box for drying at 75 ℃ to obtain an impregnated iron craft, wherein the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 3: 40; the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1; the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1:10, and the mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.3%; coating hydroxypropyl acrylate-epoxy resin coating on the surface of the impregnated iron craft, and then drying, curing and forming a film; the hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight: hydroxypropyl acrylate 15, epoxy resin 32, a leveling agent 1.2, butanol 22, xylene 16, hydroxyl acrylic resin 10 and nano filler 6. The leveling agent is silicone oil. The nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 18. The drying and curing temperature is 40 ℃.
The surface coating of the iron craft of example 1 (HT 20-40) was tested for pencil hardness according to GB/T1727-:
example 1 pencil hardness was 5H.
Example 2
The surface corrosion-resistant treatment process of the iron craft comprises the steps of cleaning the surface of the iron craft, then putting the iron craft into a drying box for drying, wherein the drying temperature is 75 ℃, the cleaning treatment is to respectively clean the iron craft by sequentially adopting acetone and clear water, and the water temperature is 80 ℃ when the clear water is cleaned; and (3) carrying out surface dipping treatment on the iron craft after cleaning and drying treatment, wherein the dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 35min, and the dipping temperature is 55 ℃. The preparation method of the impregnation treatment liquid comprises the following steps: adding a solvent tetrahydrofuran into a reaction kettle, introducing nitrogen into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 2 ℃, stirring at the rotating speed of 150r/min for 5min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 3 hours, then adding dimethylchlorosilane, continuing to stir for reacting for 10 hours, and then putting the mixture into a drying box for drying, wherein the drying temperature is 75 ℃, so that the impregnated iron craft is obtained, and the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 4: 40; the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1; the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1:13, and the mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.5%; coating hydroxypropyl acrylate-epoxy resin coating on the surface of the impregnated iron craft, and then drying, curing and forming a film; the hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight: hydroxypropyl acrylate 18, epoxy resin 36, leveling agent 1.5, butanol 25, xylene 19, hydroxy acrylic resin 12 and nano filler 7. The leveling agent is silicone oil. The nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 20. The drying and curing temperature is 45 ℃.
The surface coating of the iron craft of example 2 (HT 20-40) was tested for pencil hardness according to GB/T1727-:
example 2 pencil hardness was 5H.
Example 3
The surface corrosion-resistant treatment process of the iron craft comprises the steps of cleaning the surface of the iron craft, then putting the iron craft into a drying box for drying, wherein the drying temperature is 75 ℃, the cleaning treatment is to respectively clean the iron craft by sequentially adopting acetone and clear water, and the water temperature is 80 ℃ when the clear water is cleaned; and (3) carrying out surface dipping treatment on the iron craft after cleaning and drying treatment, wherein the dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 32min, and the dipping temperature is 52 ℃. The preparation method of the impregnation treatment liquid comprises the following steps: adding a solvent tetrahydrofuran into a reaction kettle, introducing nitrogen into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 2 ℃, stirring at the rotating speed of 150r/min for 4min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 2-3 h, then adding dimethylchlorosilane, continuing to stir for reacting for 9 h, then putting into a drying box for drying, and drying at the drying temperature of 75 ℃ to obtain an impregnated iron craft, wherein the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 4: 40; the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1; the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1:12, and the mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.4%; coating hydroxypropyl acrylate-epoxy resin coating on the surface of the impregnated iron craft, and then drying, curing and forming a film; the hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight: 15-18 parts of hydroxypropyl acrylate, 35 parts of epoxy resin, 1.3 parts of a leveling agent, 24 parts of butanol, 17 parts of xylene, 11 parts of hydroxy acrylic resin and 6.5 parts of nano filler. The leveling agent is silicone oil. The nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 19. The drying curing temperature is 44 ℃.
The surface coating of the iron craft of example 3 (HT 20-40) was tested for pencil hardness according to GB/T1727-:
example 3 pencil hardness was 5H.
Example 4
A corrosion-resistant treatment process for the surfaces of iron artware is characterized by comprising the steps of cleaning the surfaces of the iron artware, drying the iron artware at 75 ℃ in a drying box, cleaning the iron artware by sequentially adopting acetone and clear water to respectively clean the iron artware at the water temperature of 80 ℃ when the clear water is cleaned, dipping the surfaces of the iron artware after cleaning and drying, wherein the dipping is carried out by adopting a dipping treatment liquid for 32min at the dipping temperature of 52 ℃, the dipping treatment liquid is prepared by adding tetrahydrofuran serving as a solvent into a reaction kettle, introducing nitrogen into the reaction kettle to discharge air in the reaction kettle, adding trifluoropropylmethyl cyclotrisiloxane into the reaction kettle, carrying out heat preservation at the temperature of 2 ℃ and stirring at the rotating speed of 150r/min for 4min, then adding n-butyllithium-n-hexane solution, carrying out stirring reaction for 2-3 hours, then adding dimethylchlorosilane, carrying out stirring reaction for 9 hours, then drying the obtained iron artware by placing the drying in a drying temperature box, obtaining a leveling agent, adding the n-butyllithium-n-propyltrifluorine-n-propylidene propylene carbonate solution, stirring the obtained by the solution, stirring reaction for 2min, and the nano-propylidene propylene oxide resin, stirring the obtained by the weight ratio of 1.6: 1.5: 1, adding the nano-2, stirring the nano-propyl-propylene oxide nano-2% of 1, stirring, and the nano-propylene oxide nano-2, and drying the nano-propylene carbonate, and drying the nano-propylene oxide nano-2, and drying the nano-propyl-2, and drying the nano-propyl-propylene oxide, the nano-propyl-2-propyl-2-propylene-2-propylene-chloride are added into the nano-acrylate, the nano-2-propylene-acrylate, the nano-2-propyl-2-propylene-2-propylene-propyl-propylene-2-propylene-acrylate, the nano-propylene-propyl-propylene-2-chloride-acrylate, the nano-2-propylene-2.
The surface coating of the iron craft of example 4 (HT 20-40) was tested for pencil hardness according to GB/T1727-:
example 4 pencil hardness was 5H.
Hardness test
The adhesive force adopts a cross-cut method (GB/T9286-1998);
the surfaces of the iron artworks (HT 20-40) with the same specification of the examples and the comparative examples are subjected to coating adhesion detection, 10 iron artworks are arranged in each group, and the average value is:
TABLE 1
Comparative example 1: application No. 201710624849.X, a special coating for an iron craft, which is obtained by coating the coating of the comparative example 1 on the surface of the same iron craft sample by adopting the same coating and drying process;
it can be seen from table 1 that the dipping treatment of the present invention on the iron craft can form a strong adsorption layer on the surface of the iron craft, and the strong adsorption layer is an intermediate bridge and can form strong mutual adsorption with the prepared corrosion resistant coating, so as to form a stable coating by curing, and greatly improve the binding force between the coating and the iron craft, thereby ensuring the service life of the coating and avoiding the occurrence of short-term cracking phenomenon.
The surfaces of iron artworks (HT 20-40) with the same specification of examples 3 and 4 and comparative example 1 are coated, and the abrasion resistance of the coatings is tested according to the national standard GB/T1768-2006;
TABLE 2
Comparative example 2: application No. 201710624849.X, a special coating for an iron craft, which is obtained by coating the coating of the comparative example 1 on the surface of the same iron craft sample by adopting the same coating and drying process;
as can be seen from Table 2, the process of the invention can form a coating with higher wear resistance on the surface of the iron craft, thereby better preventing the occurrence of the phenomena of serious wear and skin exposure of the surface coating of the iron craft after long-time touch.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (10)
1. The surface corrosion-resistant treatment process of the iron craft is characterized by comprising the following steps of: cleaning the surface of the iron craft, and then drying;
dipping the surface of the iron craft after being cleaned and dried, and then drying to obtain a dipped iron craft;
coating a corrosion-resistant coating on the surface of the dipped iron craft, and then drying, curing and forming a film;
the corrosion-resistant coating is hydroxypropyl acrylate-epoxy resin coating.
2. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 1, wherein: the cleaning treatment is to respectively clean the iron craft by sequentially adopting an organic solvent and clear water;
the organic solvent adopts acetone;
the water temperature when the clean water is used for cleaning is 80 ℃.
3. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 1, wherein: the drying is carried out by putting the mixture into a drying oven for drying, and the drying temperature is 75 ℃.
4. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 1, wherein: the dipping treatment is carried out by adopting dipping treatment liquid, the dipping treatment time is 30-35min, and the dipping temperature is 50-55 ℃.
5. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 4, wherein: the preparation method of the impregnation treatment liquid comprises the following steps:
adding a solvent tetrahydrofuran into a reaction kettle, introducing inert gas into the reaction kettle to discharge air in the reaction kettle, then adding trifluoropropylmethylcyclotrisiloxane into the reaction kettle, preserving heat at 1-2 ℃, stirring at the rotating speed of 150r/min for 3-5min, then adding n-butyllithium-n-hexane solution, stirring for reacting for 2-3 h, then adding dimethylchlorosilane, and continuing to stir for reacting for 8-10 h to obtain the product;
the mass ratio of the trifluoropropylmethylcyclotrisiloxane to the tetrahydrofuran is 3-4: 40;
the volume ratio of the n-butyllithium-n-hexane solution to tetrahydrofuran is 5: 1;
the mass ratio of the dimethylchlorosilane to the trifluoropropylmethylcyclotrisiloxane is 1: 10-13.
6. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 5, wherein: the mass fraction of n-butyllithium in the n-butyllithium-n-hexane solution is 0.3-0.5%.
7. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 6, wherein: the hydroxypropyl acrylate-epoxy resin coating is prepared from the following components in parts by weight:
15-18 parts of hydroxypropyl acrylate, 32-36 parts of epoxy resin, 1.2-1.5 parts of flatting agent, 22-25 parts of butanol, 16-19 parts of xylene, 10-12 parts of hydroxy acrylic resin and 6-7 parts of nano filler.
8. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 7, wherein: the leveling agent is silicone oil.
9. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 7, wherein: the nano filler is a mixture of nano graphene and nano silicon dioxide, and the mixing mass ratio of the nano graphene to the nano silicon dioxide is 1: 18-20.
10. The surface corrosion-resistant treatment process of the iron craft as claimed in claim 1, wherein: the drying and curing temperature is 40-45 ℃.
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