CN111718630A - Water-based static conductive coating and preparation method thereof - Google Patents
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Abstract
The invention relates to a water-based static conductive coating. The water-based static conductive coating comprises the following components in percentage by weight: 0.1 to 0.5 percent of dispersant, 0.5 to 1.0 percent of thickener and 0.8 to 11.0 percent of defoamer; 1-5% of carbon conductive filler, 20-80% of organosilane modified acrylic emulsion, 0.6-1.2% of flatting agent, 2.0-5.0% of film forming agent and 15% of deionized water. The water-based conductive electrostatic coating adopts a special process to treat the carbon-based conductive filler body to improve the activity of a microscopic interface of the carbon-based conductive filler body, so that the modifiable basis, the dispersibility, the corrosion resistance and the like of the carbon-based conductive filler are improved; the special organosilicon monomer structure molecule is used for enhancing the toughness and strength of the film forming material and improving the weather resistance, acid and alkali resistance and the like of the film forming material. The conductive coating has the advantages of high conductivity, low cost, environmental protection, low pollution and the like, greatly saves energy and resources, and has good development prospect.
Description
Technical Field
The invention relates to the field of coatings, in particular to a water-based static conductive coating and a preparation method thereof.
Background
Static electricity is generated due to friction in the processes of transportation, storage and filling of oil products, if the accumulated static electricity is not led out in time, when the discharge energy reaches the explosion limit of a mixture of combustible oil product steam and air, static electricity can be ignited or even exploded at any time, and great threats are brought to national property, ecological environment and personal safety. The static conductive coating is a functional coating capable of conducting current, and can lead accumulated static out in time to avoid disaster accidents. The static conductive anticorrosive paint can reduce the corrosion rate and improve the antistatic effect of the storage tank, and becomes a hotspot of research of people at present. At present, the main research direction of conductive anticorrosive coatings is to develop conductive anticorrosive coatings with high conductivity, low cost and environmental protection. The water-based conductive coating has the advantages of low content, low pollution and the like, greatly saves energy and resources, and has good development prospect. Therefore, researchers have focused on developing multifunctional environmental-friendly coatings with both excellent static conductivity and corrosion resistance.
Patent CN201210091725.7 discloses an environment-friendly water-based anti-corrosive static conductive coating and a preparation method thereof, wherein a film-forming substance composed of a non-ionic water-based epoxy resin and a non-ionic epoxy curing agent is selected, and water is used as a medium to prepare the coating. The coating is green and environment-friendly, and has the characteristics of light weight, light color, stable static electricity conducting performance, excellent corrosion resistance, excellent mechanical property, excellent chemical stability and the like. But has a disadvantage of poor storage stability. In addition, patent CN 103980809A discloses a preparation method of a two-component waterborne polyurethane coating, the invention adopts zinc oxide crystals and conductive mica powder as conductive materials, the zinc oxide crystals need to be treated in the early stage, but the production process is complicated.
Disclosure of Invention
The invention provides a water-based static conductive coating, aiming at overcoming the problems of the prior water-based static conductive coating that the dispersibility, the conductivity, the thermal stability and the corrosion resistance of a conductive filler are not ideal. The water-based conductive electrostatic coating adopts a special process to treat the carbon-based conductive filler body to improve the activity of a microscopic interface of the carbon-based conductive filler body, so that the modifiable basis, the dispersibility, the corrosion resistance and the like of the carbon-based conductive filler are improved; the special organosilicon monomer structure molecule is used for enhancing the toughness and strength of the film forming material and improving the weather resistance, acid and alkali resistance and the like of the film forming material.
The invention can solve the problems by the following technical scheme: the water-based static conductive coating comprises the following components in parts by mass: 0.1 to 0.5 percent of dispersant, 0.5 to 1.0 percent of thickener and 0.8 to 11.0 percent of defoamer; 1-5% of carbon conductive filler, 20-80% of organosilane modified acrylic emulsion, 0.6-1.2% of flatting agent, 2.0-5.0% of film forming agent and 15% of deionized water.
The dispersant is RT-8040 of Rohm and Haas company of America; the thickener is RT-1035 of Tianjin Ruizxue chemical auxiliary agent; the defoaming agent is NXZ from Bassfungs; the leveling agent is ND-8020 of Shenyang air paint industry Co.Ltd; the film forming agent is texanol which is a film forming aid produced by Istmann company.
The carbon-based conductive filler is a modified carbon-based conductive filler.
The invention also provides a preparation process of the water-based conductive electrostatic coating, which comprises the following steps: adding deionized water into a container according to a certain proportion, sequentially adding a dispersing agent, a thickening agent and a defoaming agent at a rotating speed of about 400r/min, and stirring for 20 minutes; then adding the prepared modified carbon-based static conductive filler, and dispersing for 30 minutes at the rotating speed of about 2000 r/min; and then adjusting the rotation speed to be about 1000r/min, adding the prepared organosilane modified acrylic acid aqueous emulsion, stirring for 180 minutes, sequentially adding a flatting agent and a film-forming agent, adjusting the pH value of the emulsion, and filtering to remove agglomerated particle impurities to finally obtain the finished product aqueous static conductive coating.
The modification process of the carbon-based conductive filler comprises the following steps:
weighing a proper amount of carbon-series conductive filler, adding the carbon-series conductive filler into a container, weighing a proper amount of toluene (the toluene can improve the modification capacity of a modifier on a conductive material) solution, and pouring the toluene solution into the container to obtain a solution A; adding p-toluenesulfonic acid into toluene to adjust the pH value to be in the range of 4-6 to be used as a solution B; gradually dripping the solution B into the solution A, and heating and stirring the solution A simultaneously to carry out water bath reaction; maintaining the negative pressure state of the reaction system by using a vacuum pump, keeping the pressure in the reactor between-0.06 Mpa and-0.07 Mpa, controlling the temperature to be between 40 and 60 ℃, adding a modifying reagent to perform modification reaction, stirring and refluxing, stopping the reaction after 2 to 4 hours, cooling the modified product, filtering and drying for later use.
The modifying reagent comprises any one of N, N-dimethyl-3-aminopropyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane and N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane.
The preparation process of the organosilane modified acrylic acid aqueous emulsion comprises the following steps: firstly, selecting a proper amount of hard monomers and soft elastomers, stirring and mixing the hard monomers and the soft elastomers according to a proportion, uniformly mixing, and standing for 1-6 h; then adding a functional monomer, stirring, and standing the mixture after the mixture is uniform for later use; weighing a certain amount of emulsifier, mixing, stirring and dissolving in a water solvent, heating to a certain temperature, and adding an initiator into a reactor when the temperature is stable; simultaneously dripping 30-40% of premixed film-forming monomer into the reactor, controlling the temperature of reactants in the reactor to be between 40-50 ℃, observing the color change of the mixture in the reactor, and preserving the heat for 30 minutes when light blue appears in the reactor; slowly dripping the residual 60-70% of the premixed film-forming monomer into the solution, and simultaneously dripping the organosilane modifier, wherein the dripping time is controlled to be 2-5 hours (the polymerization reaction caused by too fast temperature rise is prevented); in the dropping process, a constant pressure dropping mode is adopted, a vacuum pump is used for maintaining the negative pressure state of the reaction system, and the reactor is kept at-0.04 Mpa to-0.06 Mpa, so that low boiling point micromolecules generated in the reaction can be removed.
The hard monomer includes: styrene, methyl methacrylate;
the soft monomer comprises: any of methyl acrylate, ethyl acrylate, or butyl acrylate;
the functional monomer comprises: 2-hydroxyethyl acrylate, trimethylolpropane triacrylate, glycidyl acrylate, glycidyl methacrylate, ethylene glycol dimethacrylate and pentaerythritol triacrylate or a compound of the two;
the organosilane modifier comprises: 3-acetoxy propyl triethoxy silane, 3-methacryloxy propyl triisopropoxy silane or 3-acryloxy propyl trimethoxy silane or a compound of more than two of them;
the emulsifier is alkylphenol ethoxylates; the initiator is potassium persulfate.
The film-forming monomer is one or a mixture of more than two of a hard monomer, a soft monomer or a functional monomer, and the ratio of the hard monomer, the soft monomer and the functional monomer is 5:5: 1.
Compared with the background technology, the invention has the following beneficial effects: the water-based static conductive coating has the following effects: compared with the traditional water-based paint, the water-based static conductive paint is a functional paint capable of conducting current, accumulated static can be led out in time to avoid disaster accidents, the static conductive anticorrosive paint can reduce the corrosion rate, and the static prevention effect of the storage tank can be improved. The conductive filler can solve the technical problems of non-ideal dispersibility, conductivity, thermal stability, corrosion resistance, complex process and the like of the conductive filler in the waterborne conductive electrostatic coating in the prior art. Further improving the modifiable basis, dispersibility, corrosion resistance and the like of the carbon conductive filler; a comparison experiment proves that the acid resistance of the water-based conductive coating reaches 48 hours (figure 4), the water resistance reaches 60 hours (figure 5), and the weather resistance of a film forming material is effectively improved by graphene in the water-based conductive coating.
Description of the drawings:
FIG. 1 is an electron micrograph of a carbon-based static conductive material in example 1 of the present invention;
FIG. 2 is an infrared chart of a carbon-based static conductive material in example 1 of the present invention;
FIG. 3 is an infrared image of an organosilicon modified emulsion in example 2 of the present invention;
FIG. 4 is a photograph showing an acid resistance test of a sample piece of the aqueous electrostatic conductive coating in example 3 of the present invention;
FIG. 5 is a photograph showing a water resistance test of a sample piece of the water-based conductive electrostatic paint of example 3 of the present invention.
The specific implementation mode is as follows:
the invention will be further described with reference to the following drawings and specific embodiments:
the water-based static conductive coating comprises the following components in percentage by mass: 0.1 to 0.5 percent of dispersant, 0.5 to 1.0 percent of thickener and 0.8 to 11.0 percent of defoamer; 1-5% of carbon conductive filler, 20-80% of organosilane modified acrylic emulsion, 0.6-1.2% of flatting agent, 2.0-5.0% of film forming agent and 15% of deionized water. The carbon-based conductive filler is a modified carbon-based conductive filler.
The preparation process of the water-based electrostatic conductive coating comprises the following steps: adding deionized water into a container according to a proportion, sequentially adding a dispersing agent, a thickening agent and a defoaming agent at the rotating speed of 400-500r/min, and stirring for 20-40 minutes; then adding the prepared modified carbon-based static conductive filler, and dispersing for 30 minutes at the rotating speed of 2000-; and then regulating the rotating speed to 800-.
The modification process of the carbon-based conductive filler comprises the following steps:
weighing 100-150g of carbon-based conductive filler, adding the carbon-based conductive filler into a 1L container, and then weighing 500-750ml of toluene solution (the toluene solution is used for improving the modification capability of the modifier on the conductive filler) and pouring the toluene solution into the container to serve as a solution A;
adding p-toluenesulfonic acid into toluene (the ratio of the toluenesulfonic acid to the toluene is 1:5-1: 8), adjusting the pH value to be in the range of 4-6 to obtain a solution B;
gradually dripping the solution B into the solution A, and heating and stirring the solution A simultaneously to carry out water bath reaction; maintaining the negative pressure state of the reaction system by using a vacuum pump, keeping the pressure of-0.06 Mpa to-0.07 Mpa in the reactor, controlling the temperature to be 40-60 ℃, adding a modification reagent (one of N, N-dimethyl-3-aminopropyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane and N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane) for modification reaction, stirring and refluxing, stopping the reaction after 2-4 h, cooling the modified product, filtering, and drying in vacuum for later use.
The preparation process of the organosilane modified acrylic acid aqueous emulsion comprises the following steps:
firstly, selecting a proper amount of hard monomers and soft elastomers, stirring and mixing the hard monomers and the soft elastomers according to a proportion, uniformly mixing, and standing for 1-6 h; then adding a functional monomer, stirring, and standing the mixture after the mixture is uniform for later use; weighing a certain amount of emulsifier, mixing, stirring and dissolving in a water solvent, heating to a certain temperature, and adding an initiator into a reactor when the temperature is stable; simultaneously dripping 30-40% of premixed film-forming monomer into the reactor, controlling the temperature of reactants in the reactor to be between 40-50 ℃, observing the color change of the mixture in the reactor, and preserving the heat for 30 minutes when light blue appears in the reactor; slowly dripping the residual 60-70% of the premixed film-forming monomer into the solution, and simultaneously dripping the organosilane modifier, wherein the dripping time is controlled to be 2-5 hours; in the dropping process, a constant pressure dropping mode is adopted, a vacuum pump is used for maintaining the negative pressure state of the reaction system, and the reactor is kept at-0.04 Mpa to-0.06 Mpa, so that low boiling point micromolecules generated in the reaction can be removed.
The hard monomer includes: styrene, methyl methacrylate;
the soft monomer comprises: any of methyl acrylate, ethyl acrylate, or butyl acrylate;
the functional monomer comprises: 2-hydroxyethyl acrylate, trimethylolpropane triacrylate, glycidyl acrylate, glycidyl methacrylate, ethylene glycol dimethacrylate and pentaerythritol triacrylate or a compound of the two;
the organosilane modifier comprises: 3-acetoxy propyl triethoxy silane, 3-methacryloxy propyl triisopropoxy silane or 3-acryloxy propyl trimethoxy silane or a compound of more than two of them; the emulsifier is alkylphenol ethoxylates; the initiator is potassium persulfate.
Example 1
The modification preparation process of the carbon-based conductive filler comprises the following steps:
weighing about 50g of carbon-series conductive filler with proper mass, adding a toluene solvent which is helpful for surface primary modification, adjusting the pH value to be within 4 range by adopting an organic acid solution p-toluenesulfonic acid, and heating a stirrer for water bath reaction. And maintaining the negative pressure state of the reaction system by using a vacuum pump, maintaining the pressure of minus 0.08Mpa in the reactor, and maintaining the stability of the mixed solution so that the phenomena of sedimentation, agglomeration and the like do not occur. And gradually dripping the mixed solution into a reactor at a certain temperature of 80 ℃ for pretreatment, stirring and refluxing, and stopping after 4 hours. The mass ratio of the carbon-based conductive filler to the solvent after the preliminary pretreatment is 1/5, a modifying reagent (N, N-dimethyl-3-aminopropyltrimethoxysilane) is added, the mass ratio of the modifying reagent to the carbon-based conductive filler after the preliminary pretreatment is 1/5, the three-necked flask is firstly placed in an ultrasonic cleaner for ultrasonic treatment for 30 minutes, the stirring and heating temperature is 60 ℃, the reaction time is 100 minutes, and the reaction process of the ultrasonic treatment and the heating stirring is repeated for 3 times. Then filtering while hot, washing 3 times with acetone, placing the modified carbon-based conductive filler into a vacuum drying oven at 100 ℃, standing for 12h, taking out, cooling and storing. The obtained modified carbon-based graphene sheet has a microscopic morphology as shown in fig. 1, wherein the graphene sheet is 4-5 μm, the surface is smooth, and the crystallinity is good, which indicates that the carbon-based graphene sample sheet is not damaged in the modification process. And infrared spectrum test is performed on the prepared carbon-based static conductive material, and the result is shown in fig. 2. Wherein 1078cm-1﹑1165cm-1﹑1577cm-1﹑1715cm-1Corresponding to the C-O-C deformation vibration of graphene (which is obtained by preparing graphene oxide), the existence of the static conductive material is provedIn graphene materials.
Example 2
The preparation process of the organosilane modified acrylic acid aqueous emulsion comprises the following steps:
firstly, 50g of methyl methacrylate and 30 g of ethyl acrylate are selected, stirred and mixed, and are kept stand for 6 hours after being uniformly mixed; then adding 10 g of functional monomer 3-methacryloxypropyl triisopropoxy silane, stirring, and standing the mixture after the mixture is uniform for later use; weighing 1% of emulsifier alkylphenol polyoxyethylene ether, stirring and dissolving in a water solvent, heating to 80 ℃, and adding 1/5 initiator potassium persulfate into the reactor when the temperature is stable; simultaneously dripping 30-40% of premixed film-forming monomer (the total amount of the mixture of methyl methacrylate and ethyl acrylate is 100 g, the proportion is 1: 1) into the reactor, controlling the temperature of reactants in the reactor to be 50 ℃, observing the color change of the mixture in the reactor, and preserving the heat for 30 minutes when light blue appears in the reactor; slowly dripping the residual 60 percent of premixed film-forming monomer into the solution, and simultaneously dripping 20 g of organosilane modifier 3- (2, 3-epoxypropoxy) propyltriethoxysilane into the solution, wherein the dripping time is totally controlled to be 2 hours; in the dripping process, a constant pressure dripping mode is adopted, a vacuum pump is used for maintaining the negative pressure state of a reaction system, and the reactor is kept at-0.06 MPa, so that low-boiling-point micromolecules generated in the reaction can be removed. Infrared spectroscopy was performed on samples of the silicone modified emulsion and the results are shown in FIG. 3. Modified by organic silicon and positioned in 1189cm in infrared spectrum-1And stronger vibration peaks of Si-O and C-O are formed, which indicates that the organosilane coupling agent successfully modifies the emulsion.
Example 3
The preparation method of the water-based static conductive coating comprises the following steps:
adding 15% deionized water into a container, sequentially adding 0.5% dispersant (RT-8040 of Rohm and Haas company, USA), 0.8% thickener (RT-1035 of Tianjin Ruizxue chemical auxiliary agent Co., Ltd.) and 0.8% defoamer (NXZ of Pasteur corporation) at a rotation speed of about 400r/min, and stirring for 20 min; then, 10 percent of the modified carbon-based static conductive filler prepared in the embodiment 1 is added, and the mixture is dispersed for 30 minutes at the rotating speed of about 2000 r/min; then the rotating speed is adjusted to be about 1000r/min, and about 75 percent of the mixture is addedThe aqueous acrylic emulsion modified with organosilane prepared in example 2 was stirred for 180 minutes, and then 1.0% of a leveling agent (Shenyang air paint, Ltd., ND-8020) and 3.0% of a film-forming agent (texanol, a film-forming aid produced by Istmann) were sequentially added thereto to adjust the pH of the emulsion, and then the resultant was filtered to remove agglomerated particle impurities, thereby obtaining a finished aqueous static conductive coating, and the coating was applied to a standard-meeting tin plate to form a film and then examined to determine that the surface resistivity was 4.6 108。Ω。
The components of the water-based electrostatic conductive coating are commercially available. The dispersant is RT-8040 of Rohm and Haas company of America; the thickener is RT-1035 of Tianjin Ruizxue chemical auxiliary agent; the defoaming agent is NXZ from Bassfungs; the leveling agent is ND-8020 of Shenyang air paint industry Co.Ltd; the film forming agent is texanol which is a film forming aid produced by Istmann company.
The product is a water-based two-component modified acrylic acid oil-resistant static-conductive anticorrosive coating, adopts high-efficiency conductive materials, is suitable for long-term soaking of different oils, and has excellent and stable long-acting oil resistance, static conductivity and moderate acid, alkali and salt corrosion resistance. Can be widely applied to oil-resistant conductive electrostatic paint special for petrochemical industry, electric power and oil product storage tanks. Has the advantages that: 1) excellent adhesion and tough paint film; 2) the oil resistance is excellent, and the corrosion of moderate acid, alkali and salt is resisted; 3) excellent conductivity and stability; 4) water-based treatment: does not contain organic solvent, saves energy, has no pollution, accords with the environmental protection requirement, takes deionized water as a dispersion medium, has small smell and no combustion, and ensures the safety in the processes of storage, transportation and use 5) convenient use: the construction performance is good, tap water can be directly added to adjust the construction viscosity, the construction tools can be directly cleaned by the tap water, and the construction cost is reduced. 6 prepared water-based electrostatic conductive coating sample pieces are taken to be subjected to an acid resistance experiment, after 48 hours, the samples are taken out to observe the surface state, and the phenomenon of coating peeling is not found, which indicates that the acid resistance of the prepared water-based electrostatic conductive coating reaches more than 48 hours, and is shown in figure 4. Meanwhile, 3 sample pieces are taken for water resistance experiments, as shown in figure 5, after 60 hours, the surface coatings of the 3 sample pieces are peeled and shed, which indicates that the water resistance of the prepared water-based electrostatic conductive coating reaches more than 60 hours. The above results confirm that the aqueous electrostatic conductive coating has excellent weather resistance.
Claims (10)
1. The water-based static conductive coating comprises the following components in percentage by mass: 0.1 to 0.5 percent of dispersant, 0.5 to 1.0 percent of thickener and 0.8 to 11.0 percent of defoamer; 1-5% of carbon conductive filler, 20-80% of organosilane modified acrylic emulsion, 0.6-1.2% of flatting agent, 2.0-5.0% of film forming agent and 15% of deionized water.
2. The aqueous conductive electrostatic coating of claim 1, characterized in that: the carbon-based conductive filler is a modified carbon-based conductive filler.
3. A process for preparing the aqueous electrostatic conductive coating according to claim 1, characterized in that: the method comprises the following steps: adding deionized water into a container according to a proportion, sequentially adding a dispersing agent, a thickening agent and a defoaming agent at the rotating speed of 400-500r/min, and stirring for 20-40 minutes; then adding the prepared modified carbon-based static conductive filler, and dispersing for 30 minutes at the rotating speed of 2000-; and then regulating the rotating speed to 800-.
4. The process for preparing the aqueous electrostatic conductive coating according to claim 3, characterized in that: the modification process of the carbon-based conductive filler comprises the following steps:
weighing a proper amount of carbon-series conductive filler, adding the carbon-series conductive filler into a container, weighing a proper amount of toluene solution, and pouring the toluene solution into the container to obtain a solution A;
adding p-toluenesulfonic acid into toluene to adjust the pH value to be in the range of 4-6 to be used as a solution B;
gradually dripping the solution B into the solution A, and heating and stirring the solution A simultaneously to carry out water bath reaction; maintaining the negative pressure state of the reaction system by using a vacuum pump, keeping the pressure in the reactor between-0.06 Mpa and-0.07 Mpa, controlling the temperature to be between 40 and 60 ℃, adding a modifying reagent to perform modification reaction, stirring and refluxing, stopping the reaction after 2 to 4 hours, cooling the modified product, filtering and drying for later use.
5. The process for preparing the aqueous electrostatic conductive coating according to claim 3, characterized in that: the modifying reagent comprises any one of N, N-dimethyl-3-aminopropyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane and N- (2-aminoethyl) -3-aminopropylmethyldiethoxysilane.
6. The process for preparing the aqueous electrostatic conductive coating according to claim 3, characterized in that: the preparation process of the organosilane modified acrylic acid aqueous emulsion comprises the following steps:
firstly, selecting a proper amount of hard monomers and soft elastomers, stirring and mixing the hard monomers and the soft elastomers according to a proportion, uniformly mixing, and standing for 1-6 h; then adding a functional monomer, stirring, and standing the mixture after the mixture is uniform for later use; weighing a certain amount of emulsifier, mixing, stirring and dissolving in a water solvent, heating to a certain temperature, and adding an initiator into a reactor when the temperature is stable; simultaneously dripping 30-40% of premixed film-forming monomer into the reactor, controlling the temperature of reactants in the reactor to be between 40-50 ℃, observing the color change of the mixture in the reactor, and preserving the heat for 30 minutes when light blue appears in the reactor; slowly dripping the residual 60-70% of the premixed film-forming monomer into the solution, and simultaneously dripping the organosilane modifier, wherein the dripping time is controlled to be 2-5 hours; in the dropping process, a constant pressure dropping mode is adopted, a vacuum pump is used for maintaining the negative pressure state of the reaction system, and the reactor is kept at-0.04 Mpa to-0.06 Mpa, so that low boiling point micromolecules generated in the reaction can be removed.
7. The process for preparing the aqueous electrostatic conductive coating according to claim 6, wherein: the hard monomer includes: styrene, methyl methacrylate;
the soft monomer comprises: any of methyl acrylate, ethyl acrylate, or butyl acrylate;
the functional monomer comprises: 2-hydroxyethyl acrylate, trimethylolpropane triacrylate, glycidyl acrylate, glycidyl methacrylate, ethylene glycol dimethacrylate and pentaerythritol triacrylate or a compound of the two;
the organosilane modifier comprises: 3-acetoxy propyl triethoxy silane, 3-methacryloxy propyl triisopropoxy silane or 3-acryloxy propyl trimethoxy silane or a compound of more than two of them;
the emulsifier is alkylphenol ethoxylates; the initiator is potassium persulfate.
8. The process for preparing the aqueous electrostatic conductive coating according to claim 6 or 7, characterized in that: the film-forming monomer is one or a mixture of more than two of hard monomers, soft monomers or functional monomers.
9. The process for preparing the aqueous electrostatic conductive coating according to claim 8, wherein: the ratio of the hard monomer, the soft monomer and the functional monomer is 5:5: 1.
10. The process for preparing the aqueous electrostatic conductive coating according to claim 3, characterized in that: the ratio of the bensylsulfonic acid to the toluene in the solution B is 1:5-1: 8.
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