CN114773957B - Indoor static conductive coating and preparation method thereof - Google Patents

Indoor static conductive coating and preparation method thereof Download PDF

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Publication number
CN114773957B
CN114773957B CN202210562318.3A CN202210562318A CN114773957B CN 114773957 B CN114773957 B CN 114773957B CN 202210562318 A CN202210562318 A CN 202210562318A CN 114773957 B CN114773957 B CN 114773957B
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component
curing agent
coating
epoxy
parts
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CN114773957A (en
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李著初
徐常利
陆腾飞
丁嘉欣
叶志会
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Hunan Aerospace Sanfeng Science And Technology Co ltd
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Hunan Aerospace Sanfeng Science And Technology Co ltd
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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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • C09D5/002—Priming 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
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/24—Electrically-conducting 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
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • C09D7/63—Additives non-macromolecular organic

Abstract

The invention belongs to the field of coatings, and particularly relates to an indoor static conductive coating and a preparation method thereof. The indoor static conductive coating comprises an epoxy primer, an epoxy intermediate coating and a static conductive finish; the epoxy primer comprises (2-4) 1A 1 and B1 components; the epoxy intermediate paint comprises components A2, B2 and C2 in parts by weight of (2-4) to (1) (8-12); the static conductive finish paint comprises components A3 and B3 in a weight ratio of (1-13) to 1. The coating disclosed by the invention can well resist rolling and abrasion of personnel and vehicles, and can keep excellent antistatic performance for a long time. The three paints are used in combination, so that the concrete and steel structures of the coating can be ensured to have high bonding strength, the composite coating can keep excellent antistatic performance for a long time under the conditions of rolling and abrasion of personnel and vehicles, and is alkali-resistant, fireproof and pressure-resistant.

Description

Indoor static conductive coating and preparation method thereof
Technical Field
The invention belongs to the field of coatings, and particularly relates to an indoor static conductive coating and a preparation method thereof.
Background
The alkali-resistant static-conducting combined coating meeting the indoor environment-friendly coating standard is suitable for places where static conduction and electronic interference resistance are needed for various closed steel-concrete structure buildings and structures and closed electronic product production is needed. The composite coating is environment-friendly, nontoxic and free of pungent odor, the product is a low-flame-spreading coating, a structure with static electricity conducting performance can be constructed, the ground can bear the rolling of common vehicles and personnel, and the composite coating can resist the corrosion of strong bases such as sodium hydroxide.
The existing indoor wall coating mainly uses emulsion paint, and the indoor floor coating mainly is common floor static conductive coating.
Emulsion paints for wall surfaces are generally composed of aqueous emulsion, auxiliaries, water and pigments; the emulsion paint has good environmental protection performance, is mainly used for protecting and decorating the concrete base surface of the building inner wall, is not suitable for a reinforced concrete structure, and has no static electricity conducting and corrosion resisting functions. The static conductive floor coating is generally composed of an epoxy primer, an epoxy intermediate coating and a static conductive finish; the product is mainly used for protecting and decorating the concrete floor of the building, and is not suitable for coating and using in a closed space because the primer, the intermediate paint and the finish paint contain a large amount of dimethylbenzene and high harmful solvent content; the static conductive performance of the static conductive agent coating is not durable, and the static conductive effect of the static conductive coating can not meet the use requirement after the static conductive coating is used for a period of time; the wear resistance is not good, the wear resistance is not suitable for the wear of vehicles and the like, and after the wear-resistant rubber belt is put into use, the static conducting performance cannot meet the requirement due to surface wear; is not suitable for the protection and decoration of the steel structure base surface with low surface treatment in the steel-concrete structure.
Disclosure of Invention
The invention aims to provide a static conductive coating applied to a closed steel-concrete structure, and the volatile solvent of the coating meets the GB18582 standard requirement and meets the indoor environment-friendly product; the cured coating has high impact resistance and high wear resistance, and can provide a coating with long-term static conducting performance under the condition of abrasion of vehicles and personnel; a reliable scheme is provided for underground closed electronic interference prevention structures and electronic product production workshops.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an indoor static conductive coating comprises an epoxy primer, an epoxy intermediate coat and a static conductive finish coat;
the epoxy primer comprises a component A1 and a component B1 in a weight ratio of (2-4) to 1; wherein: the component A1 comprises the following raw materials in parts by weight: 95-100 parts of epoxy resin A, 0.5-2 parts of siloxane and 1-10 parts of solvent A; the component B1 comprises an epoxy curing agent A;
the epoxy intermediate paint comprises three components of A2, B2 and C2 in parts by weight (2-4): 1 (8-12), wherein: the component A2 comprises the following raw materials in parts by weight: 95-100 parts of epoxy resin B; 1-5 parts of a solvent B; the component B2 comprises an epoxy curing agent B; the C2 component comprises silicon carbide sand;
the static conductive finish paint comprises components A3 and B3 in a weight ratio of (1-13) to 1, wherein: the component A3 comprises the following raw materials in parts by weight:
20-50 parts of epoxy resin, 40-64 parts of conductive agent, 5-20 parts of anticorrosive filler, 0.1-1 part of auxiliary agent and 2-5 parts of solvent C; the component B3 comprises an epoxy curing agent C.
In the component A1, the siloxane part is too much, the storage stability of the epoxy primer is poor, and the epoxy primer is not easy to store.
In the epoxy intermediate paint, among the three components A2, B2 and C2, the ratio of C2 to A2 is too small, the pressure-bearing resistance of the coating is poor, the rigidity of the coating is insufficient, the environmental protection is overlarge, the performance of the surface layer is not excessive, the pressure resistance of the whole coating is poor, and the service life of the coating is also reduced. While the intermediate paint has a rigidity intermediate between that of the primer and the top coat. The proportion of C2 and A2 is too large, the rigidity of the coating is too large, the integral strength of the coating is reduced, and the compression resistance of the coating is sharply reduced.
Preferably, the epoxy curing agent a, the epoxy curing agent B and the epoxy curing agent C are respectively and independently selected from: at least one of modified isophorone diamine curing agent, modified cyclohexanediamine curing agent, phenolic aldehyde amine curing agent, phenolic aldehyde amide curing agent, fatty amine curing agent and modified methyl cyclopentyl diamine curing agent.
More preferably, the epoxy curing agent a, the epoxy curing agent B, and the epoxy curing agent C are the same.
The inventor finds that after many experiments, the adhesion between different coatings is best and the performance of each coating is also best when the same curing agent is used for all three coatings in the invention. In each layer, the same curing agent is adopted, and after the coating is simply dried on the surface, the unreacted curing agent can react with the resin of the adjacent coating, for example, the middle coating can respectively react with the bottom coating and the surface coating, so that a three-dimensional crosslinking structure is formed, and the adhesion is obviously better than that of the coating with different curing agents in each layer.
Preferably, the isophorone diamine curing agent is Ancamine1618, the phenol aldehyde amine curing agent is cadle 3060 or Daran chemical 1552, the polyamide curing agent is cadle 3060 or Daran chemical 1552, and the aliphatic amine curing agent is Daran chemical 1552.
Cadley 3060 is a mixture of phenolic amine, polyamide, fatty amine curing agent; handai chemical 1552 is a mixture of phenolic amine, polyamide, and fatty amine curing agent.
Preferably, the epoxy resin a, the epoxy resin B and the epoxy resin C are each independently at least one selected from the group consisting of a bisphenol a type epoxy resin, a bisphenol F type epoxy resin and a novolac epoxy resin.
Preferably, the epoxy resin A, the epoxy resin B and the epoxy resin C are bisphenol A type epoxy resins.
More preferably, the epoxy resin A is E44 epoxy resin; the epoxy resin B and the epoxy resin C are E51 epoxy resin.
The E51 or E44 epoxy resin has low viscosity, is easy to dissolve and needs less solvent; high epoxy value, high crosslinking density, good compatibility of resin and powder, good compactness of paint film after film forming and good corrosion resistance.
Preferably, the solvent A, the solvent B and the solvent C are respectively and independently at least one solvent selected from propylene glycol methyl ether, propylene glycol butyl ether, ethylene glycol butyl ether, propylene glycol methyl ether acetate, propylene glycol diacetate and dipropylene glycol butyl ether.
More preferably, the solvent a and the solvent B are propylene glycol methyl ether.
The dipropylene glycol butyl ether is used for finishing paint, so that the drying speed is ensured to be low, and the finishing paint has better leveling property and decorative effect.
Further preferably, the solvents C are respectively and independently selected from propylene glycol methyl ether and dipropylene glycol butyl ether mixture.
The propylene glycol methyl ether has high drying speed, is suitable for priming paint and intermediate paint, ensures the quick drying of the coating and is easy to construct.
Preferably, in the A1 component, the siloxane is at least one of Yingchuang A187 and Dow Corning6040, preferably at least one of A187 and DOWCORNING 6040.
The A187 and DOWCORNING6040 siloxanes significantly improve adhesion and salt spray resistance in the present invention and are significantly better than other siloxanes.
Preferably, in the C2 component, the particle size of the silicon carbide sand is 80-100 meshes.
The proper grain size range of the silicon carbide sand is beneficial to construction on one hand, and the integral performance of the coating can be ensured in the grain size range. The particle size of the silicon carbide sand is too large, the coating layer has to be constructed with higher thickness to ensure the performance of the coating layer, and the coating layer is easy to generate air holes under the condition of large particle size, so that the performance of the whole coating layer can be influenced. The particle size of the silicon carbide sand is too small, and the silicon carbide sand can lose the pressure-bearing performance of the silicon carbide, so that the pressure-bearing performance of the whole coating is poor.
Preferably, the anticorrosive filler in the component A3 is at least one of feldspar powder, quartz powder and silicon carbide.
The main functions of the anti-corrosion filler are wear resistance and alkali resistance, and the anti-corrosion filler plays a role in supporting the framework. The amount of the corrosion-inhibiting filler must therefore be such that a certain amount is reached, otherwise the wear resistance is impaired.
Preferably, the conductive agent in the A3 component comprises 40-60 parts of conductive mica, 0.03-1 part of carbon black, 0.5-2 parts of siloxane and 0.2-1 part of dispersing agent.
The invention realizes the permanent static electricity conducting effect through the combined action of the carbon black, the conductive mica, the dispersant and the siloxane.
The conductive mica has high content, forms a permanent conductive network, has excellent static conductive performance and can form long-acting antistatic coating. Thereby ensuring that the antistatic coating still can keep good static conductive performance under the condition of surface abrasion.
The dispersant is required to ensure good conductivity in the early stage and realize uniform dispersion of other inorganic components.
Carbon black is a conductive agent on the one hand and a pigment on the other hand, and ensures the color of a paint film. The addition of the diluent causes the VOC content to exceed the requirement of the volatile organic compound content of the indoor coating of the GB18582 standard.
The microstructure of the carbon black imparts and determines the electrical conductivity properties of the carbon black. For carbon black aggregates, the electrical resistivity is higher than for graphite due to the concentrically oriented circular nature of the carbon black graphite layers, mostly longitudinal. Microscopically, the carbon black atoms form covalent bonds with the carbon black atoms, and the carbon atoms create paths in the electrical potential through the covalent bonds, with very little resistance, so that each hexagonal network layer of each crystallite, which consists of carbon atoms, is very conductive. But each slice is separated from another slice by a distance which, although small, is not as electrically conductive as the slice atoms.
Carbon black is not very conductive (more metallic) because the carbon black contacts the melt in a manner that occurs between layers, and certainly not all carbon black is conductive in the manner described above, and some intricate crystallites are disordered to form transverse pathways, which increases conductivity, in a manner that is small and random. The carbon black is not uniformly distributed in the rubber material, most carbon black particles or a plurality of or dozens of carbon black aggregates are embraced together to form carbon black agglomerates which exist in the rubber, the more the mixing frequency is, the less the number of the aggregates of the carbon black agglomerates is, and the more uniform the carbon black correspondingly dispersed in the rubber material is, but the too many mixing frequency can cause rubber burning or destroy the basic particle size of the carbon black, reduce the carbon black structure and reduce the conductivity. Therefore, the special dispersant is added in the invention, which can change the dispersibility, does not damage the structure of the carbon black, does not affect the surface purity of the carbon black, and can achieve good conductive effect.
Siloxane exerts conductivity after hydrolysis, but the conductivity cannot be durable, once the surface is abraded, the conductivity is seriously damaged, and meanwhile, the hydrophilicity is higher, and the storage stability is influenced if more siloxane is added.
Therefore, the invention respectively exerts different static electricity conducting functions through the carbon black, the conductive mica, the dispersing agent and the siloxane, and supplements each other to mutually influence to form permanent static electricity conducting.
More preferably, the conductive mica accounts for 45-60 parts.
In the A3 component, the content of the conductive mica is too small, and the conductive mica is not connected into a network and is not conductive. Too much conductive mica content can result in a product with too low strength.
Preferably, the dispersing agent selected is a phospholipid nonionic surfactant.
More preferably, the dispersant is soybean phospholipid.
The soybean lecithin is a nonionic surfactant, has good dispersion effect on inorganic fillers on one hand, and has strong water absorption, good ionization property and good static conductivity on the other hand, so that the soybean lecithin can be well adapted to the coating system of the invention.
The invention also provides a preparation method of the indoor static conductive coating, which comprises the following steps:
preparation A1: firstly, stirring the epoxy resin, the siloxane and the environment-friendly solvent for 5-10min at the rotating speed of 400-600rpm, uniformly mixing, and then adding the auxiliary agent at the rotating speed of 500-800rpm to obtain A1;
preparation B1: uniformly mixing the selected curing agents and directly packaging to obtain B1;
preparation A2: firstly, stirring the environment-friendly epoxy resin and the environment-friendly solvent for 5-10min at the rotating speed of 400-600rpm, uniformly mixing, and then adding the auxiliary agent at the rotating speed of 500-800rpm to obtain A2;
preparation B2: uniformly mixing the selected curing agents and directly packaging to obtain B1;
the C2 component silicon carbide sand adopts a commercial product;
preparation A3: firstly, stirring epoxy resin, siloxane, a solvent C, a dispersant and an auxiliary agent for 5-10min at the rotating speed of 400-600rpm, slowly adding conductive mica, carbon black and an anticorrosive filler after uniformly mixing, and dispersing at a high speed for 25 min at the linear speed of 32m/s to obtain A3;
and the component B3 is prepared by uniformly mixing the selected curing agents and directly packaging to obtain the component B3.
In the process of preparing A3, the components are dispersed at a high speed at a linear speed of 32m/s, so that uniform dispersion is ensured, and the dispersion can be used without grinding.
The invention also provides a coating method of the indoor static conductive coating, which comprises the following steps:
uniformly mixing the component A1 and the component B1, and coating the mixture on a surface to be coated which is subjected to pretreatment to form an epoxy primer coating, wherein epoxy is adoptedThe dosage of the primer is 0.1-0.2kg/m 2 ；
After the epoxy primer coating is dried, uniformly mixing the component A2, the component B2 and the component C2, and coating the mixture on the primer coating, wherein the dosage of the epoxy intermediate paint is 1-7kg/m 2 ；
After the epoxy intermediate paint coating is dried, the component A3 and the component B3 are mixed evenly and coated on the epoxy intermediate paint coating, and the dosage of the static conductive finish paint is 0.15-0.25kg/m 2 。
The consumption of the epoxy primer is too small, the uniformity is not good, the consumption of the epoxy primer is too large, and the coating is too thick, so that the pressure-bearing performance is influenced.
The epoxy intermediate paint can obviously increase the bearing capacity, and has excessive use amount and high cost.
The electrostatic conductive finish paint has too little dosage and poor electrostatic conductivity; the electrostatic conductive finish paint has excessive use amount, low toughness and no impact resistance.
Preferably, the total thickness of the indoor static conductive coating is 0.8-3mm.
The invention also claims the application of the indoor static conductive coating in the surface treatment of the indoor reinforced concrete structure.
The invention is further explained below:
epoxy resin, curing agent and siloxane in the epoxy primer jointly realize the flexibility, corrosion resistance and high sealing performance of the coating; and can realize high adhesive force to concrete and low surface treatment steel structure. The primer and the steel structure are well combined, and the adhesive force and the corrosion resistance are excellent. The middle coating mainly provides an integral coating structure and bears rolling compaction of a vehicle.
The high silicon carbide content in the epoxy intermediate paint can realize the integral hardness, thickness and pressure-bearing capacity of the coating, simultaneously realize low flame-spreading performance and realize good transition of the primer.
Siloxane in the static conductive finish paint not only realizes partial static conductive function, but also improves the alkali resistance and wear resistance.
The epoxy resin, the static conductive agent, the anticorrosive filler and the curing agent in the static conductive finish paint mainly realize the static conductive performance, the abrasion resistance, the acid and alkali resistance and the fire resistance of the coating and the high cohesive force of the intermediate coating.
Compared with the prior art, the invention provides the preparation method of the combined coating which meets the standard of the indoor environment-friendly coating, has excellent low-smoke-spreading performance and can exert different functions on each coating; the prepared environment-friendly epoxy primer can penetrate into a concrete base layer and act with concrete together to enhance the mutual adhesion; the paint has excellent adhesive force with a steel structure, and simultaneously has salt spray resistance and corrosion resistance; the prepared environment-friendly epoxy intermediate paint has good pressure bearing performance, high hardness, fire resistance and vehicle rolling resistance; the prepared acid-base-resistant environment-friendly static conductive finish paint has high hardness, wear resistance, fire resistance, static conductive performance and pressure resistance, can well resist rolling and abrasion of personnel and vehicles, and can keep excellent static resistance for a long time under the conditions of rolling and abrasion of the personnel and the vehicles. The three paints are used in combination, so that the concrete and steel structures of the coating can be ensured to have high bonding strength, the composite coating can keep excellent antistatic performance for a long time under the conditions of rolling and abrasion of personnel and vehicles, and is alkali-resistant, fireproof and pressure-resistant.
Compared with the products on the market, the three paints in the combined coating provided by the invention have excellent environmental protection performance, and the combination of each coating can play different roles. The coating with excellent performance can be obtained by using the combined reinforced concrete structure, has the capability of preventing electronic interference, is suitable for being used as an underground closed electronic interference prevention structure and an electronic product production workshop, and has the service life of 5-8 years. Under the condition of abnormal matching use, the bottom layer is lacked, the middle coating of the silicon carbide sand is used as the primer, and the adhesive force of the whole coating and the base layer is influenced because the middle coating cannot effectively penetrate into the cement base layer due to the construction viscosity of the silicon carbide middle coating and poor flowability of the coating, so that the adhesive force of the whole coating is poor, the service life is greatly reduced, and the normal service life cannot be reached within one year; the reduction contains carborundum middle level coating, will influence the anti pressure-bearing effect of monolithic coating, and the vehicle moves on monolithic coating, and monolithic coating causes the coating to destroy because of can't bearing vehicle pressure to life greatly reduced, general normal life is in a year.
Detailed Description
The technical solution of the present invention is further described with reference to the following specific embodiments. In the following implementation, the acid and alkali resistant environment-friendly static conductive coating prepared by the invention is applied to coating of closed structures.
Example 1
The specific information of each component is shown in table 1.
TABLE 1 information on the components
Figure BDA0003657096850000071
Preparing an environment-friendly epoxy primer:
preparation of A1 component: 9.3kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.5kg of propylene glycol methyl ether were added thereto at 500rpm and mixed for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.7kg of E51 epoxy resin into a dispersion mixer, adding 0.3kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.3kg of solvent (0.2 kg of propylene glycol methyl ether and 0.1kg of dipropylene glycol butyl ether) were put into a dispersion mixer, 0.4kg of antifoaming agent, 0.02kg of anti-settling agent and 0.01kg of dispersant were added at 500rpm, and stirred for 20 minutes, 3.6kg of conductive mica, 2.7kg of anticorrosive filler and 0.05kg of carbon black were added, and dispersed at a high speed of 32m/s on-line for 25 minutes, and added with silicone, and dispersed at a high speed of 500-600rpm for 25 minutes.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the alkali-resistant environment-friendly static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 3 2 Curing at normal temperature for 6h to form an environment-friendly base coat; after the environment-friendly epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 2.5 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 8 to 1, and the coating is scraped on a substrate, wherein the dosage is 0.15-0.25kg/m 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7d at normal temperature, the coating can be used.
Example 2
Preparing an environment-friendly epoxy primer:
preparation of A1 component: 4.6kg of E44 epoxy resin was charged into a dispersion mixer, and 0.05kg of siloxane and 0.35kg of propylene glycol methyl ether were added thereto at 500rpm and the mixture was stirred for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 4.6kg of E51 epoxy resin into a dispersion mixer, adding 0.4kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing alkali-resistant static conductive finish paint:
preparation of A3 component: 6kg of E51 epoxy resin and 1.2kg of environment-friendly solvent are added into a dispersion stirrer, 0.4kg of defoaming agent, 0.04kg of anti-settling agent and 0.02kg of conductive dispersing agent are added at the rotating speed of 500rpm, the mixture is stirred for 20 minutes, 12.6kg of conductive mica and 0.1kg of carbon black are added, the mixture is dispersed at a high speed for 25 minutes at the rotating speed of 32m/s of linear speed, siloxane is added, and the mixture is dispersed at a high speed for 25 minutes at the rotating speed of 500-600 rpm.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the environment-friendly static conductive combined coating is basically the same as the using method described in the embodiment 1, except that the using amount of the environment-friendly epoxy primer is 0.15kg/m 2 2kg/m of environment-friendly epoxy intermediate paint 2 The dosage of the acid-base-resistant environment-friendly static conductive coating is 0.2kg/m 2 。
Example 3
Preparing an environment-friendly epoxy primer:
preparation of A1 component: 9kg of E44 environment-friendly epoxy resin is added into a dispersion mixer, 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether are added at the rotating speed of 500rpm, and the mixture is stirred for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparing an environment-friendly epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion mixer, adding 0.5kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The C2 component is directly 80-100 meshes of silicon carbide sand;
preparing alkali-resistant static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.4kg of environment-friendly solvent are added into a dispersion mixer, 0.7kg of defoaming agent, 0.02kg of anti-settling agent and 0.01kg of dispersing agent are added at the rotating speed of 500rpm, the mixture is stirred for 20 minutes, 5.4kg of conductive mica, 0.9kg of anticorrosive filler and 0.1kg of carbon black are added, the mixture is dispersed at the rotating speed of 32m/s at a high speed for 25 minutes, siloxane is added, and the mixture is dispersed at the rotating speed of 500-600rpm at a high speed for 25 minutes.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the environment-friendly static conductive combined coating of the embodiment (2-3) is basically the same as the using method of the embodiment 1, except that the using amount of the environment-friendly epoxy primer is 0.2kg/m 2 6kg/m of environment-friendly epoxy intermediate paint 2 The dosage of the acid-base-resistant environment-friendly static conductive coating is 0.25kg/m 2 。
Example 4
Three layers adopt different curing agents
Preparing an epoxy primer:
preparation of A1 component: 9kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.8kg of xylene were added at 500rpm and the mixture was stirred for 20 minutes.
Preparation of the B1 component: asahi H-3360-0k (aromatic amine curing agent) package.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion stirrer, adding 0.5kg of dimethylbenzene at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: asahi H-6018-3 (fatty amine hardener), packaged directly.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing static conductive finish paint:
preparation of A3 component: 4.4kg of E20 epoxy resin (75% content), 0.4kg (xylene: n-butanol = 3).
Preparation of the B3 component: 4kg of a commercially available Shanghai good oil 115 curing agent (polyamide curing agent), 2kg of a mixed solvent (xylene: n-butanol =7, 3), 0.3kg of K54 (fatty amine curing agent) was added with stirring at 400rpm, and stirred for 20 minutes until uniform.
The coating method of the static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 2 2 Curing at normal temperature for 6h to form a base coat; after the epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 2 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 4 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7 days at normal temperature, the coating can be used.
Example 5
The amount of conductive mica is reduced
Preparation of epoxy primer
Preparation of A1 component: 9kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether were added thereto at 500rpm and mixed for 20 minutes.
Preparation of the B1 component: mixing 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent, stirring, and packaging.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion mixer, adding 0.5kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.4kg of environment-friendly solvent are added into a dispersion mixer, 0.7kg of defoaming agent, 0.02kg of anti-settling agent and 0.01kg of dispersing agent are added at the rotating speed of 500rpm, the mixture is stirred for 20 minutes, 1kg of conductive mica, 5.3kg of anti-corrosion filler and 0.1kg of carbon black are added, the mixture is dispersed at the rotating speed of 32m/s at a high speed for 25 minutes, siloxane is added, and the mixture is dispersed at the rotating speed of 500-600rpm at a high speed for 25 minutes.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 3 2 Curing at normal temperature for 6h to form an environment-friendly base coat; after the environment-friendly epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 2.5 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 8 to 1, and the coating is scraped on a base material, wherein the using amount is 0.15-0.25kg/m 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7d at normal temperature, the coating can be used.
Example 6
Not four curing agents, the curing agents being of different kinds
Preparing an epoxy primer:
preparation of A1 component: 9kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether were added thereto at 500rpm and mixed for 20 minutes.
Preparation of the B1 component: commercially available Shanghai good oil 115 polyamide curing agent 4kg,6kg mixed solvent (xylene: n-butanol = 7), 0.3kg of K54 was added with stirring at 400rpm, and stirred for 20 minutes until homogeneous.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion mixer, adding 0.5kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: a commercially available Haichong oil 115 polyamide curing agent was mixed with 4kg,6kg of a solvent (xylene: n-butanol = 7) and 0.3kg of K54 was added thereto under stirring at 400rpm for 20 minutes until the mixture was homogeneous.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin was put into a dispersion mixer, 0.7kg of an antifoaming agent, 0.02kg of an anti-settling agent and 0.01kg of a dispersant were added at 500rpm and stirred for 20 minutes, 5.4kg of conductive mica, 0.9kg of an anticorrosive filler and 0.05kg of carbon black were added and dispersed at a high speed at a line speed of 32m/s for 25 minutes, and siloxane was added and dispersed at a high speed at 500-600rpm for 25 minutes.
Preparation of the B3 component: a commercially available Haichang oil 115-polyamide curing agent (4 kg,2 kg) was mixed with a solvent (xylene: n-butanol =7 3) and 0.3kg of K54 was added thereto with stirring at 400rpm and stirred for 20 minutes until homogeneous.
The coating method of the static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 1 2 Curing at normal temperature for 6h to form an environment-friendly base coat; after the environment-friendly epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 1 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 4 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7 days at normal temperature, the coating can be used.
Example 7
Other dispersant Performance Effect
Preparing an epoxy primer:
preparation of A1 component: 9kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether were added thereto at 500rpm and mixed for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion stirrer, adding 0.5kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The C2 component is 80-100 meshes of silicon carbide sand directly;
preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.4kg of environment-friendly solvent are added into a dispersion stirrer, 0.7kg of defoaming agent, 0.02kg of anti-settling agent and 0.01kg of BYK180 dispersing agent are added at the rotating speed of 500rpm and stirred for 20 minutes, 5.4kg of conductive mica, 0.9kg of anticorrosive filler and 0.05kg of carbon black are added, the mixture is dispersed at a high speed of 32m/s at linear speed for 25 minutes, siloxane is added, and the mixture is dispersed at a high speed of 500-600rpm for 25 minutes.
Preparation of the B3 component: mixing 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent, stirring, and packaging.
The coating method of the static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 3 2 Curing at normal temperature for 6h to form an environment-friendly base coat; after the environment-friendly epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 2.5 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 8 to 1, and the coating is scraped on a substrate, wherein the dosage is 0.15-0.25kg/m 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7d at normal temperature, the coating can be used.
Example 8
Analysis of influence of particle size of silicon carbide on properties
Preparing an epoxy primer:
preparation of A1 component: 9kg of E44 environment-friendly epoxy resin is added into a dispersion mixer, 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether are added at the rotating speed of 500rpm, and the mixture is stirred for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparation of epoxy intermediate coating:
preparation of A2 component: adding 9.5kg of E51 epoxy resin into a dispersion mixer, adding 0.5kg of propylene glycol methyl ether at the rotating speed of 400rpm, stirring for 10min, dispersing at high speed for 35min, and uniformly mixing.
Preparation of the B2 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
325-mesh silicon carbide sand is directly used as the C2 component;
preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.4kg of environment-friendly solvent are added into a dispersion mixer, 0.7kg of defoaming agent, 0.02kg of anti-settling agent and 0.01kg of dispersing agent are added at the rotating speed of 500rpm, the mixture is stirred for 20 minutes, 5.4kg of conductive mica, 0.9kg of anticorrosive filler and 0.05kg of conductive carbon black are added, the mixture is dispersed at the rotating speed of 32m/s at a high speed for 25 minutes, siloxane is added, and the mixture is dispersed at the rotating speed of 500-600rpm at a high speed for 25 minutes.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the environment-friendly static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 3 2 Curing at normal temperature for 6h to form an environment-friendly base coat; after the environment-friendly epoxy primer is cured, the component A2, the component B2 and the component C2 are fully mixed and uniformly stirred according to the mass ratio of 2.5 2 Curing at normal temperature for 6h to form a compression-resistant intermediate paint layer; mixing A3 component and B3 componentFully and uniformly mixing the components according to the mass ratio of 8 to 1, and scraping the coating on a base material, wherein the using amount of the coating is 0.15-0.25kg/m 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7d at normal temperature, the coating can be used.
Example 9
Performance analysis of epoxy-free intermediate coats
Preparing an epoxy primer:
preparation of A1 component: 9kg of E44 epoxy resin was charged into a dispersion mixer, and 0.2kg of siloxane and 0.8kg of propylene glycol methyl ether were added thereto at 500rpm and mixed for 20 minutes.
Preparation of the B1 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
Preparing static conductive finish paint:
preparation of A3 component: 3.3kg of E51 epoxy resin and 0.4kg of environment-friendly solvent are added into a dispersion mixer, 0.7kg of defoaming agent, 0.02kg of anti-settling agent and 0.01kg of dispersing agent are added at the rotating speed of 500rpm, the mixture is stirred for 20 minutes, 5.4kg of conductive mica, 0.9kg of anticorrosive filler and 0.05kg of conductive carbon black are added, the mixture is dispersed at the rotating speed of 32m/s at a high speed for 25 minutes, siloxane is added, and the mixture is dispersed at the rotating speed of 500-600rpm at a high speed for 25 minutes.
Preparation of the B3 component: 8kg of Caidelai 3060 curing agent and 2kg of Yingchuang 1618 curing agent are mixed and stirred evenly and packaged.
The coating method of the alkali-resistant environment-friendly static conductive coating comprises the following steps:
after polishing a concrete structure and a steel structure, fully and uniformly mixing the component A1 and the component B1 according to a mass ratio of 3 2 Curing at normal temperature for 6h to form an environment-friendly base coat; the component A3 and the component B3 are fully and uniformly mixed according to the mass ratio of 8 to 1, and the coating is scraped on a substrate, wherein the dosage is 0.15-0.25kg/m 2 And curing at normal temperature for 6h to form the static conductive wear-resistant compression-resistant surface coating. After curing for 7d at normal temperature, the coating can be used.
The static conductive composite coatings prepared in examples 1 to 9 were used to form paint films, which were tested for properties and compared with commercially available static conductive coatings, wherein the commercially available static conductive composite coatings were prepared on low surface treated steel plates according to the product specifications, the epoxy primer was 15 to 30 μm, the epoxy intermediate coat was 3mm, and the static conductive finish coat was 60 μm, and the specific property test data are shown in table 2:
table 2 examples 1-3 properties
Figure BDA0003657096850000161
Figure BDA0003657096850000171
TABLE 3 Properties of examples 4-9
Figure BDA0003657096850000172
Figure BDA0003657096850000181
As can be seen from tables 2-3, the acid and alkali resistant environment-friendly static conductive combined coating prepared by the method has higher alkali resistance, compressive strength, wear resistance and salt mist resistance compared with the commercially available static conductive coating product, has good adhesive force to steel structures and concrete structures, is superior to the similar products in initial static conductive performance and abraded static conductive performance, achieves the standard of indoor environment-friendly coatings, has far superior content of volatile harmful substances to the commercially available static conductive floor coating, and shows that the environmental protection performance of the product design is higher than that of the commercially available static conductive coating product. The use requirements in the indoor closed environment of the steel-concrete structure and the production environment of the anti-electronic interference and closed electronic products are met.
From example 4 it can be seen that: when different curing agents are used, when the types of the curing agents are not suitable for steel structures, adverse effects are generated on the steel structure coating adhesive force structure of the steel-concrete steel, the steel structure adhesive force and the steel structure corrosion resistance are affected, and therefore the service life of the steel structure part coating is affected.
From example 5 it can be seen that: when the addition amount of the conductive mica is insufficient, the conductive mica cannot form a complete static conductive network, so that the static conductive performance and the long-term static conductive performance are influenced.
From example 6 it can be seen that: when only the polyamide curing agent is used, the environmental protection performance of the product is affected because a large amount of dimethylbenzene must be added into the system; construction in indoor environments will affect the health of the constructors and users and may even cause safety risks. The curing agent polyamide dries slowly, resulting in poor workability and long recoat time. The polyamide system has inferior wear resistance to the mixed curing agent due to insufficient crosslinking degree.
It can be seen from example 7 that the static conductive dispersant has an influence only on the initial static conductive property and has no influence on the long-term static conductive property, and the long-term conductive property is determined by the conductive network formed by the conductive mica.
According to the embodiment 8, the silicon carbide has small particle size, the silicon carbide cannot form a supporting structure with each other, and the coating becomes a common epoxy coating without bearing capacity. The compressive strength and the bearing capacity of the whole coating can be reduced, a sea-island structure can be formed between thicker silicon carbide particles, and the silicon carbide particles can be mutually supported, so that the bearing capacity of the particles is far greater than that of powder-state silicon carbide.
It can be seen from example 9 that without the silicon carbide intermediate coating, the weight of the vehicle is applied to the top coat and the overall compressive resistance of the coating is reduced.
The above-mentioned embodiments are intended to further illustrate the technical content of the present invention, but do not represent the embodiment of the present invention to be limited thereto, and any modification or technical extension made according to the present invention without departing from the principle of the present invention is considered to be the protection scope of the present invention.

Claims (9)

1. An indoor static conductive coating comprises an epoxy primer, an epoxy intermediate coat and a static conductive finish coat; the epoxy primer is characterized by comprising components A1 and B1 in a weight ratio of (2-4) to 1; wherein: the component A1 comprises the following raw materials in parts by weight: 95-100 parts of epoxy resin A, 0.5-2 parts of siloxane and 1-10 parts of solvent A; the component B1 comprises an epoxy curing agent A;
the epoxy intermediate paint comprises three components of A2, B2 and C2 in parts by weight (2-4) to 1 (8-12), wherein: the component A2 comprises the following raw materials in parts by weight: 95-100 parts of epoxy resin B; 1-5 parts of a solvent B; the component B2 comprises an epoxy curing agent B; the C2 component comprises silicon carbide sand;
the static conductive finish paint comprises components A3 and B3 in a weight ratio of (1-13) to 1, wherein: the component A3 comprises the following raw materials in parts by weight: 20-50 parts of epoxy resin, 40-64 parts of conductive agent, 5-20 parts of anticorrosive filler, 0.1-1 part of auxiliary agent and 2-5 parts of solvent C; the component B3 comprises an epoxy curing agent C;
the epoxy curing agent A, the epoxy curing agent B and the epoxy curing agent C are respectively and independently selected from the following components: at least two of modified isophorone diamine curing agent, modified cyclohexanediamine curing agent, phenolic aldehyde amine curing agent, phenolic amide curing agent, phenolic aldehyde amine, polyamide fatty amine mixed curing agent, fatty amine curing agent and modified methylcyclopentadiene diamine curing agent;
the epoxy curing agent A, the epoxy curing agent B and the epoxy curing agent C are the same;
in the C2 component, the grain size of the carborundum sand is 80-100 meshes;
the conductive agent in the component A3 comprises 40-60 parts of conductive mica, 0.03-1 part of carbon black, 0.5-2 parts of siloxane and 0.2-1 part of dispersing agent.
2. The indoor electrostatic conductive coating according to claim 1, wherein the epoxy resin A, the epoxy resin B and the epoxy resin C are at least one selected from bisphenol A epoxy resin, bisphenol F epoxy resin and novolac epoxy resin.
3. The indoor static conductive coating of claim 1, wherein the solvent A, the solvent B and the solvent C are at least one solvent selected from propylene glycol methyl ether, propylene glycol butyl ether, ethylene glycol butyl ether, propylene glycol methyl ether acetate, propylene glycol diacetate and dipropylene glycol butyl ether.
4. The indoor electrostatic conductive coating of claim 1, wherein in the A1 component, the siloxane is at least one of Yingchuang A187 and Dow Corning 6040.
5. The indoor static conductive coating according to claim 1, wherein the anticorrosive filler in the component A3 is at least one of feldspar powder, quartz powder and silicon carbide.
6. The indoor static electricity conductive coating material as claimed in claim 1, wherein the selected dispersant is a phospholipid nonionic surfactant.
7. The indoor static electricity conductive coating material as claimed in claim 6, wherein the dispersant is soybean lecithin.
8. The method for preparing the indoor electrostatic conductive coating according to any one of claims 1 to 7, comprising the steps of:
the preparation method of the A3 comprises the following steps: firstly, stirring the epoxy resin, the siloxane, the solvent C, the dispersant and the auxiliary agent for 5-10min at the rotating speed of 400-600rpm, slowly adding the conductive mica, the carbon black and the anticorrosive filler after uniformly mixing, and dispersing at a high speed for 25 min at a linear speed of 32m/s to obtain A3.
9. Use of the indoor static conductive coating according to any one of claims 1 to 7 in surface treatment of indoor steel-concrete structures.
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