CN110885581A - Wear-resistant composite conductive coating and preparation method thereof - Google Patents
Wear-resistant composite conductive coating and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a wear-resistant composite conductive coating and a preparation method thereof, wherein the wear-resistant composite conductive coating comprises the following raw material components in parts by weight: 50-55 parts of acrylic emulsion, 10-15 parts of silicone-acrylic emulsion, 10-15 parts of composite conductive auxiliary agent, 0.8-1 part of wetting agent, 0.6-1 part of defoaming agent, 0.6-0.8 part of thickening agent, 0.4-0.6 part of plasticizer, 0.2-0.3 part of flatting agent, 0.5-0.8 part of film-forming auxiliary agent, 0.4-0.6 part of stabilizer, 3-5 parts of wear-resistant auxiliary agent, 0.8-1.0 part of emulsifier and 8-10 parts of solvent. According to the wear-resistant composite conductive coating provided by the invention, polybenzazole coated and modified barium strontium titanate is selected as a conductive auxiliary agent, so that the coating is endowed with excellent conductivity, the wear-resistant auxiliary agent is uniformly dispersed in the coating, and the wear-resistant characteristic of the coating is improved.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a wear-resistant composite conductive coating and a preparation method thereof.
Background
The conductive coating is one of functional coatings, has the functions of conducting current and removing accumulated charges, and is widely applied to the antistatic and electromagnetic shielding fields of plastics, rubber, synthetic fibers and the like. The conductive coating materials are classified into intrinsic type conductive coating materials and additive type conductive coating materials in terms of their action mechanisms. The intrinsic conductive material is a substance which is basically formed into a film by using a conductive polymer and makes the coating electrically conductive by the conductivity of the polymer itself. The additive conductive coating is prepared by adding a conductive substance based on a high molecular polymer and making the coating conductive by utilizing the conductive action of the conductive substance. At present, the point-to-point function of the additive conductive coating is realized by adding some static conductive powder, but the powder cannot be uniformly dispersed in the coating due to poor interface compatibility between inorganic powder and organic polymer emulsion, so that the resistivity is larger and the conductivity is relatively poor; meanwhile, the wear and the loss in the use process can also cause the reduction of the conductivity of the conductive coating.
Therefore, the development of the composite conductive coating with high wear resistance has very important practical significance.
Disclosure of Invention
The invention aims to provide a composite conductive coating with high wear resistance and a preparation method thereof, aiming at solving the problem of poor wear resistance and conductivity of the existing conductive coating.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention provides a wear-resistant composite conductive coating which comprises the following raw material components in parts by weight:
50-55 parts of acrylic emulsion, 10-15 parts of silicone-acrylic emulsion, 10-15 parts of composite conductive auxiliary agent, 0.8-1 part of wetting agent, 0.6-1 part of defoaming agent, 0.6-0.8 part of thickening agent, 0.4-0.6 part of plasticizer, 0.2-0.3 part of flatting agent, 0.5-0.8 part of film-forming auxiliary agent, 0.4-0.6 part of stabilizer, 3-5 parts of wear-resistant auxiliary agent, 0.8-1.0 part of emulsifier and 8-10 parts of solvent.
Preferably, the composite conductive auxiliary agent is polybenzazole-coated modified barium strontium titanate.
Preferably, the modifier adopted by the modified barium strontium titanate is dimethyl vinyl methoxysilane, and the average particle size of the barium strontium titanate is 200 nm.
Preferably, the wear-resistant auxiliary agent is silane modified nano alumina powder.
Preferably, the modifier adopted by the modified nano-alumina is dodecyl trimethoxy silane, and the average grain diameter of the alumina is 80 nm.
Preferably, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-chloroethylene-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film-forming aid is triethylene glycol butyl ether, the stabilizer is cyclohexanone oxime, the wear-resisting aid is silane modified nano-alumina powder, the emulsifier is industrial concentrated soybean phospholipid, and the solvent is amyl acetate.
The invention also provides a preparation method for preparing the wear-resistant composite conductive coating, which comprises the following steps:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating.
Further, in step S1, the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min; and/or the presence of a gas in the atmosphere,
in step S2, the rotation speed of stirring is 2000r/min, and the stirring time is 30 minutes; and/or the presence of a gas in the atmosphere,
in step S3, the rotation speed of stirring is 3000r/min, and the stirring time is 20 minutes; and/or the presence of a gas in the atmosphere,
in step S4, the rotation speed of stirring was 3500r/min, and the stirring time was 30 minutes.
Further, the preparation method of the modified barium strontium titanate comprises the following steps: uniformly dispersing barium strontium titanate into an ethanol water solution, dropwise adding dimethyl vinyl methoxysilane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified barium strontium titanate.
Further, in the preparation method of the modified barium strontium titanate, the molar ratio of silane to barium strontium titanate is 0.03, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 9.0; the stirring speed is 800r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 45 ℃, and the continuous stirring time is 2 hours.
Further, the preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps:
vacuumizing the reactor, flushing with dry pure nitrogen gas to ensure no residual air and moisture;
adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃;
under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃;
filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
Further, the preparation method of the modified alumina specifically comprises the following steps: uniformly dispersing alumina into an ethanol water solution, dropwise adding dodecyl trimethoxy silane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified nano alumina.
Further, in the preparation method of the modified nano-alumina, the molar ratio of the silane to the nano-alumina is 0.07, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 5.0; the stirring speed is 1000r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 60 ℃, and the continuous stirring time is 2 hours.
The technical scheme provided by the invention has the following beneficial effects:
(1) according to the wear-resistant composite conductive coating provided by the invention, polybenzazole coated and modified barium strontium titanate is selected as a conductive auxiliary agent, so that the coating is endowed with excellent conductivity;
(2) according to the wear-resistant composite conductive coating provided by the invention, the ethylene-vinyl chloride-vinyl laurate copolymer rubber powder has thickening and wear-resistant effects, meanwhile, the silane modified nano-alumina powder is added as a wear-resistant assistant, and β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane is used as a wetting agent, so that the wear-resistant assistant is uniformly dispersed in the coating, and the wear-resistant characteristic of the coating is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. The experimental procedures in the following examples are conventional unless otherwise specified. The test materials used in the following examples were purchased from a conventional store unless otherwise specified. In the quantitative tests in the following examples, three replicates were set, and the data are the mean or the mean ± standard deviation of the three replicates.
The acrylic emulsion used in the examples and comparative examples of the present invention was obtained from Dow, Promega AC-3001, Silicone-acrylic emulsion was obtained from Dow, Promega SL-200, 5-methoxyindole was obtained from Shanghai Ji to Biochemical technology Co., Ltd., Key organic, barium strontium titanate was obtained from Shanghai Dynasty practice Co., Ltd., BST, dimethylvinylmethoxysilane was obtained from Shanghai Jinle practice Co., Ltd., β -aminoethyl- γ -aminopropyl-ethyldimethoxysilane was obtained from Dow Corning (China) organosilicon Co., Ltd., Promega Kogyo Co., Z6020, and fluorine-modified organosilicon antifoaming agent was obtained from Dow Korea New Material science Co., Ltd., product No. DIs H-6600; ethylene-vinyl chloride-vinyl laurate copolymer gum powder available from Wake, Germany as product type
8034H; dioctyl adipate was purchased from san cheng shu double hong chemical technology ltd; polyacrylates are available from basf, germany under the product model number Perenol F40; butyl triethylene glycol ether was purchased from Dow chemical Co., Ltd; cyclohexanone oxime was produced by Wuhan Hongyinkang fine chemical Co., Ltd; amyl acetate was purchased from Shenyang Xuteng chemical products Co., Ltd; the nano alumina is purchased from Nanjing Tianxing New Material Co., Ltd, and the model is TAP; the dodecyl trimethoxy silane is purchased from Taixi (Shanghai) chemical industry development Limited company and has the product model number of D3383.
The invention provides a wear-resistant composite conductive coating which comprises the following raw material components in parts by weight:
50-55 parts of acrylic emulsion, 10-15 parts of silicone-acrylic emulsion, 10-15 parts of composite conductive auxiliary agent, 0.8-1 part of wetting agent, 0.6-1 part of defoaming agent, 0.6-0.8 part of thickening agent, 0.4-0.6 part of plasticizer, 0.2-0.3 part of flatting agent, 0.5-0.8 part of film-forming auxiliary agent, 0.4-0.6 part of stabilizer, 3-5 parts of wear-resistant auxiliary agent, 0.8-1.0 part of emulsifier and 8-10 parts of solvent.
Preferably, the composite conductive auxiliary agent is polybenzazole-coated modified barium strontium titanate.
Preferably, the modifier adopted by the modified barium strontium titanate is dimethyl vinyl methoxysilane, and the average particle size of the barium strontium titanate is 200 nm.
Preferably, the wear-resistant auxiliary agent is silane modified nano alumina powder.
Preferably, the modifier adopted by the modified nano-alumina is dodecyl trimethoxy silane, and the average grain diameter of the alumina is 80 nm.
Preferably, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-chloroethylene-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film-forming aid is triethylene glycol butyl ether, the stabilizer is cyclohexanone oxime, the wear-resisting aid is silane modified nano-alumina powder, the emulsifier is industrial concentrated soybean phospholipid, and the solvent is amyl acetate.
The invention also provides a preparation method for preparing the wear-resistant composite conductive coating, which comprises the following steps:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating.
Further, in step S1, the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min; and/or the presence of a gas in the atmosphere,
in step S2, the rotation speed of stirring is 2000r/min, and the stirring time is 30 minutes; and/or the presence of a gas in the atmosphere,
in step S3, the rotation speed of stirring is 3000r/min, and the stirring time is 20 minutes; and/or the presence of a gas in the atmosphere,
in step S4, the rotation speed of stirring was 3500r/min, and the stirring time was 30 minutes.
Further, the preparation method of the modified barium strontium titanate comprises the following steps: uniformly dispersing barium strontium titanate into an ethanol water solution, dropwise adding dimethyl vinyl methoxysilane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified barium strontium titanate.
Further, in the preparation method of the modified barium strontium titanate, the molar ratio of silane to barium strontium titanate is 0.03, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 9.0; the stirring speed is 800r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 45 ℃, and the continuous stirring time is 2 hours.
Further, the preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps:
vacuumizing the reactor, flushing with dry pure nitrogen gas to ensure no residual air and moisture;
adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃;
under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃;
filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
Further, the preparation method of the modified alumina specifically comprises the following steps: uniformly dispersing alumina into an ethanol water solution, dropwise adding dodecyl trimethoxy silane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified nano alumina.
Further, in the preparation method of the modified nano-alumina, the molar ratio of the silane to the nano-alumina is 0.07, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 5.0; the stirring speed is 1000r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 60 ℃, and the continuous stirring time is 2 hours.
The technical scheme provided by the invention has the following beneficial effects:
(1) according to the wear-resistant composite conductive coating provided by the invention, polybenzazole coated and modified barium strontium titanate is selected as a conductive auxiliary agent, so that the coating is endowed with excellent conductivity;
(2) according to the wear-resistant composite conductive coating provided by the invention, the ethylene-vinyl chloride-vinyl laurate copolymer rubber powder has thickening and wear-resistant effects, meanwhile, the silane modified nano-alumina powder is added as a wear-resistant assistant, and β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane is used as a wetting agent, so that the wear-resistant assistant is uniformly dispersed in the coating, and the wear-resistant characteristic of the coating is improved.
The thermal insulation coating and the preparation method thereof provided by the invention are further explained by combining specific examples.
Comparative example 1
The raw material components of comparative example 1 include the wear-resistant assistant but do not include the composite conductive assistant, thereby verifying the effect of the wear-resistant assistant on the function of improving wear resistance.
The comparative example 1 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 50 parts of acrylic emulsion, 15 parts of silicone-acrylic emulsion, 1 part of wetting agent, 0.6 part of defoaming agent, 0.8 part of thickening agent, 0.6 part of plasticizer, 0.2 part of flatting agent, 0.6 part of film-forming assistant, 0.5 part of stabilizer, 5 parts of wear-resistant assistant, 0.8 part of emulsifier and 10 parts of solvent.
The anti-abrasion wear-resistant coating comprises β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane as a wetting agent, fluorine modified organic silicon as a defoaming agent, ethylene-vinyl chloride-vinyl laurate copolymer rubber powder as a thickening agent, dioctyl adipate as a plasticizer, Perenol F40 as a flatting agent, triethylene glycol monobutyl ether as a film forming aid, cyclohexanone oxime as a stabilizer, silane modified nano-alumina powder as a wear-resistant aid, industrial concentrated soybean phospholipid as an emulsifier and amyl acetate as a solvent.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Comparative example 2
The raw material composition of comparative example 2 includes the composite conductive additive but does not include the wear-resistant additive, thereby verifying the effect of the composite conductive additive alone on the conductivity improving function.
The comparative example 2 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 50 parts of acrylic emulsion, 15 parts of silicone-acrylic emulsion, 10 parts of composite conductive auxiliary agent, 1 part of wetting agent, 0.6 part of defoaming agent, 0.8 part of thickening agent, 0.6 part of plasticizer, 0.2 part of flatting agent, 0.6 part of film-forming auxiliary agent, 0.5 part of stabilizer, 0.8 part of emulsifier and 10 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a defoaming agent, a thickening agent, a plasticizer, a leveling agent, a film-forming auxiliary agent, a stabilizing agent, an emulsifier and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film-forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the emulsifier is industrial concentrated soybean phospholipid, and the solvent.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Example 1
The embodiment 1 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 55 parts of acrylic emulsion, 10 parts of silicone-acrylic emulsion, 13 parts of composite conductive additive, 1 part of wetting agent, 0.9 part of defoaming agent, 0.8 part of thickening agent, 0.6 part of plasticizer, 0.3 part of flatting agent, 0.8 part of film-forming additive, 0.6 part of stabilizer, 4 parts of wear-resistant additive, 1.0 part of emulsifier and 10 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a thickening agent, a plasticizer, a leveling agent, a film forming auxiliary agent, a stabilizing agent, a wear-resisting auxiliary agent, an emulsifying agent and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the wear-resisting auxiliary agent is silane modified nano aluminum oxide powder, the emulsifying agent is industrial concentrated.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Example 2
The embodiment 2 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 50 parts of acrylic emulsion, 15 parts of silicone-acrylic emulsion, 12 parts of composite conductive auxiliary agent, 0.8 part of wetting agent, 1 part of defoaming agent, 0.6 part of thickening agent, 0.4 part of plasticizer, 0.3 part of flatting agent, 0.8 part of film-forming auxiliary agent, 0.4 part of stabilizing agent, 5 parts of wear-resistant auxiliary agent, 1.0 part of emulsifier and 8 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a thickening agent, a plasticizer, a leveling agent, a film forming auxiliary agent, a stabilizing agent, a wear-resisting auxiliary agent, an emulsifying agent and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the wear-resisting auxiliary agent is silane modified nano aluminum oxide powder, the emulsifying agent is industrial concentrated.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Example 3
The embodiment 3 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 52 parts of acrylic emulsion, 14 parts of silicone-acrylic emulsion, 15 parts of composite conductive additive, 1 part of wetting agent, 0.8 part of defoaming agent, 0.6 part of thickening agent, 0.4-0.6 part of plasticizer, 0.2 part of flatting agent, 0.7 part of film-forming additive, 0.5 part of stabilizer, 3 parts of wear-resistant additive, 0.9 part of emulsifier and 9 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a thickening agent, a plasticizer, a leveling agent, a film forming auxiliary agent, a stabilizing agent, a wear-resisting auxiliary agent, an emulsifying agent and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the wear-resisting auxiliary agent is silane modified nano aluminum oxide powder, the emulsifying agent is industrial concentrated.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Example 4
The embodiment 4 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 53 parts of acrylic emulsion, 15 parts of silicone-acrylic emulsion, 10 parts of composite conductive auxiliary agent, 0.8 part of wetting agent, 1 part of defoaming agent, 0.8 part of thickening agent, 0.4 part of plasticizer, 0.3 part of flatting agent, 0.8 part of film-forming auxiliary agent, 0.5 part of stabilizing agent, 5 parts of wear-resistant auxiliary agent, 1.0 part of emulsifier and 9 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a thickening agent, a plasticizer, a leveling agent, a film forming auxiliary agent, a stabilizing agent, a wear-resisting auxiliary agent, an emulsifying agent and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the wear-resisting auxiliary agent is silane modified nano aluminum oxide powder, the emulsifying agent is industrial concentrated.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
Example 5
This embodiment 5 provides a wear-resistant composite conductive coating, which comprises the following raw material components in parts by weight: 54 parts of acrylic emulsion, 13 parts of silicone-acrylic emulsion, 14 parts of composite conductive auxiliary agent, 1 part of wetting agent, 0.8 part of defoaming agent, 0.8 part of thickening agent, 0.5 part of plasticizer, 0.2 part of flatting agent, 0.6 part of film-forming auxiliary agent, 0.4 part of stabilizer, 4 parts of wear-resistant auxiliary agent, 0.9 part of emulsifier and 10 parts of solvent.
The conductive coating comprises a composite conductive auxiliary agent, a thickening agent, a plasticizer, a leveling agent, a film forming auxiliary agent, a stabilizing agent, a wear-resisting auxiliary agent, an emulsifying agent and a solvent, wherein the composite conductive auxiliary agent is polybenzazole coated modified barium strontium titanate, the wetting agent is β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified organic silicon, the thickening agent is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming auxiliary agent is triethylene glycol butyl ether, the stabilizing agent is cyclohexanone oxime, the wear-resisting auxiliary agent is silane modified nano aluminum oxide powder, the emulsifying agent is industrial concentrated.
The preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps: the first step is to prepare modified barium strontium titanate. Dispersing barium strontium titanate in 50% volume fraction ethanol water solution, and adjusting the pH value of the ethanol water solution to 9.0 by using 0.1M sodium hydroxide solution; stirring at the rotating speed of 800r/min in a water bath at the temperature of 45 ℃, dropwise adding dimethylvinylmethoxysilane, keeping the molar ratio of dimethylvinylmethoxysilane to barium strontium titanate at 0.03, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified barium strontium titanate powder. And step two, preparing the polybenzazole coated modified barium strontium titanate. Firstly, vacuumizing a reactor, flushing the reactor by using dry pure nitrogen and ensuring no residual air and moisture; adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃; under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃; filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
The preparation method of the silane modified nano alumina powder comprises the following steps: dispersing nano alumina in 50% ethanol water solution, and adjusting the pH value of the ethanol water solution to 5.0 by using 0.1M hydrochloric acid solution; stirring at the rotating speed of 1000r/min in a water bath at the temperature of 60 ℃, dropwise adding dodecyl trimethoxy silane, keeping the molar ratio of the dodecyl trimethoxy silane to the barium strontium titanate at 0.07, continuously stirring for 2 hours after the dropwise adding is finished, and performing suction filtration, drying and grinding to obtain the modified nano-alumina powder.
According to the raw materials, the preparation method provided by the invention is adopted to prepare the wear-resistant composite conductive coating:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture; the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture; the stirring speed is 2000r/min, and the stirring time is 30 minutes;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture, wherein the stirring speed is 3000r/min, and the stirring time is 20 minutes;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating. The stirring speed is 3500r/min, and the stirring time is 30 minutes, so as to obtain the wear-resistant composite conductive coating.
The wear-resistant composite conductive coating prepared in the embodiments 1 to 5 and the comparative examples 1 and 2 is coated on a rigid substrate, the wear resistance is detected according to the ASTM D4060 standard, the conductivity is detected by using a surface resistance tester (ACL-385), and the main performance detection results are shown in Table 1.
TABLE 1 Main Performance index of the coatings prepared in the examples and comparative examples
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. The wear-resistant composite conductive coating is characterized by comprising the following raw material components in parts by weight:
50-55 parts of acrylic emulsion, 10-15 parts of silicone-acrylic emulsion, 10-15 parts of composite conductive auxiliary agent, 0.8-1 part of wetting agent, 0.6-1 part of defoaming agent, 0.6-0.8 part of thickening agent, 0.4-0.6 part of plasticizer, 0.2-0.3 part of flatting agent, 0.5-0.8 part of film-forming auxiliary agent, 0.4-0.6 part of stabilizer, 3-5 parts of wear-resistant auxiliary agent, 0.8-1.0 part of emulsifier and 8-10 parts of solvent.
2. The wear-resistant composite conductive coating as claimed in claim 1, wherein the composite conductive auxiliary agent is polybenzazole-coated modified barium strontium titanate.
3. The wear-resistant composite conductive coating as claimed in claim 2, wherein a modifier adopted by the modified barium strontium titanate is dimethylvinylmethoxysilane, and the average particle size of the barium strontium titanate is 200 nm.
4. The wear-resistant composite conductive coating as claimed in claim 1, wherein the wear-resistant auxiliary agent is silane-modified nano alumina powder.
5. The wear-resistant composite conductive coating as claimed in claim 4, wherein the modifier adopted by the modified nano alumina is dodecyl trimethoxy silane, and the average particle size of the alumina is 80 nm.
6. The wear-resistant composite conductive coating as claimed in claim 1, wherein the wetting agent is β -aminoethyl- γ -aminopropyl-ethyldimethoxysilane, the defoaming agent is fluorine modified silicone, the thickener is ethylene-vinyl chloride-vinyl laurate copolymer rubber powder, the plasticizer is dioctyl adipate, the leveling agent is polyacrylate Perenol F40, the film forming aid is triethylene glycol monobutyl ether, the stabilizer is cyclohexanone oxime, the wear-resistant aid is silane modified nano alumina powder, the emulsifier is industrial concentrated soybean phospholipid, and the solvent is amyl acetate.
7. The preparation method for preparing the wear-resistant composite conductive coating as claimed in claim 6, which is characterized by comprising the following steps:
s1: dissolving polybenzazole coated modified barium strontium titanate into an acetonitrile solution, and uniformly stirring to obtain a first mixture;
s2: adding acrylic emulsion, silicone-acrylic emulsion, amyl acetate and ethylene-vinyl chloride-vinyl laurate copolymer rubber powder into the first mixture, and uniformly stirring to obtain a second mixture;
s3, adding β -aminoethyl-gamma-aminopropyl-ethyldimethoxysilane, fluorine modified organic silicon, dioctyl adipate, polyacrylate Perenol F40, cyclohexanone oxime and silane modified nano alumina powder into the second mixture, and uniformly stirring to obtain a third mixture;
s4: adding industrial concentrated soybean phospholipid and triethylene glycol monobutyl ether into the third mixture, and uniformly stirring to obtain the wear-resistant composite conductive coating.
8. The preparation method according to claim 7, wherein in step S1, the mass percentage of the polybenzazole coated modified barium strontium titanate to the acetonitrile is 1:3, the stirring speed is 2500r/min, and the stirring time is 20 min; and/or the presence of a gas in the atmosphere,
in step S2, the rotation speed of stirring is 2000r/min, and the stirring time is 30 minutes; and/or the presence of a gas in the atmosphere,
in step S3, the rotation speed of stirring is 3000r/min, and the stirring time is 20 minutes; and/or the presence of a gas in the atmosphere,
in step S4, the rotation speed of stirring was 3500r/min, and the stirring time was 30 minutes.
9. The preparation method of claim 8, wherein the preparation method of the modified barium strontium titanate comprises the following steps: uniformly dispersing barium strontium titanate into an ethanol water solution, dropwise adding dimethyl vinyl methoxysilane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified barium strontium titanate.
10. The preparation method according to claim 9, wherein in the preparation method of the modified barium strontium titanate, the molar ratio of the silane to the barium strontium titanate is 0.03, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 9.0; the stirring speed is 800r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 45 ℃, and the continuous stirring time is 2 hours.
11. The preparation method according to claim 8, wherein the preparation method of the polybenzazole coated modified barium strontium titanate comprises the following steps:
vacuumizing the reactor, flushing with dry pure nitrogen gas to ensure no residual air and moisture;
adding chloroform degassed with nitrogen while maintaining the constant temperature of 50 ℃;
under the conditions of stirring and nitrogen protection, adding modified barium strontium titanate and ammonium persulfate, then adding 5-methoxyindole into a reactor in a dropwise manner, keeping the molar ratio of barium strontium titanate to indole at 1:3 and the molar ratio of ammonium persulfate to indole at 5:1, and reacting for 5 hours under stirring at constant temperature of 50 ℃;
filtering, washing and vacuum drying to obtain brown powder, namely the polybenzazole coated modified barium strontium titanate.
12. The method according to claim 8, wherein the modified alumina is prepared by a method comprising the steps of: uniformly dispersing alumina into an ethanol water solution, dropwise adding dodecyl trimethoxy silane under the stirring condition, then continuously stirring, and sequentially carrying out suction filtration, washing, drying and grinding on a stirred product to obtain the modified nano alumina.
13. The preparation method of claim 12, wherein in the preparation method of the modified nano alumina, the molar ratio of the silane to the nano alumina is 0.07, the volume fraction of the ethanol aqueous solution is 50%, and the pH value of the ethanol aqueous solution is adjusted to 5.0; the stirring speed is 1000r/min, the stirring process is carried out in a water bath, the temperature of the water bath is 60 ℃, and the continuous stirring time is 2 hours.
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| CN (1) | CN110885581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921967A (en) * | 2022-07-04 | 2022-08-19 | 安徽美凯澳新型材料有限公司 | Wear-resistant Teflon conveyor belt and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702892A (en) * | 2012-06-14 | 2012-10-03 | 天长市银狐漆业有限公司 | Conducting paint composition and preparation method thereof |
| CN105623156A (en) * | 2015-12-28 | 2016-06-01 | 深圳清华大学研究院 | Polymer-based hybrid membrane and preparation method and application thereof |
| CN106205912A (en) * | 2016-07-25 | 2016-12-07 | 上海长园维安电子线路保护有限公司 | A kind of parallel structure overflow protecting element |
| CN108250892A (en) * | 2018-02-05 | 2018-07-06 | 合肥华盖光伏科技有限公司 | It is a kind of for water-proof climate resisting coating of solar street light and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702892A (en) * | 2012-06-14 | 2012-10-03 | 天长市银狐漆业有限公司 | Conducting paint composition and preparation method thereof |
| CN105623156A (en) * | 2015-12-28 | 2016-06-01 | 深圳清华大学研究院 | Polymer-based hybrid membrane and preparation method and application thereof |
| CN106205912A (en) * | 2016-07-25 | 2016-12-07 | 上海长园维安电子线路保护有限公司 | A kind of parallel structure overflow protecting element |
| CN108250892A (en) * | 2018-02-05 | 2018-07-06 | 合肥华盖光伏科技有限公司 | It is a kind of for water-proof climate resisting coating of solar street light and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114921967A (en) * | 2022-07-04 | 2022-08-19 | 安徽美凯澳新型材料有限公司 | Wear-resistant Teflon conveyor belt and preparation method thereof |
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