CN114940840A - Self-repairing PRTV coating for electrical products and preparation process thereof - Google Patents
Self-repairing PRTV coating for electrical products and preparation process thereof Download PDFInfo
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- 239000004698 Polyethylene Substances 0.000 claims description 20
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 20
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 16
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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Abstract
The invention discloses a self-repairing PRTV coating for electrical products and a preparation process thereof, relating to the field of an anti-pollution flashover coating PRTV, and comprising S1: preprocessing and stirring; s2: breaking cell wall; s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C; s4: and (4) catalyzing the reaction. The common bridging agent in the invention generates diradical after exposure, the diradical reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulation of the PRTV coating on the surface of an electrical product.
Description
Technical Field
The invention relates to the field of anti-pollution flashover coating PRTV, in particular to a self-repairing PRTV coating for an electrical product and a preparation process thereof.
Background
Electrical products such as insulators are subject to a flashover failure. The pollution flashover threatens the safe and stable operation of a power system, light people influence local power supply, heavy people can influence a power grid, and even the whole power grid is cracked. The influence of the pollution flashover on a power supply system causes huge loss to national economy. Particularly, the natural pollution accumulation phenomenon on the surface of the electric porcelain of outdoor equipment of an electric power system is inevitable, a room temperature vulcanized silicone rubber RTV anti-pollution flashover coating for short is proposed in the years, and the outstanding characteristics of long effect, maintenance-free property and the like are taken as a new technology and a new material to be rapidly developed in the application of domestic electric products. But the prior RTV anti-pollution flashover coating has lower service performance.
Therefore, it is necessary to invent a self-repairing PRTV coating for electrical products and a preparation process thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a self-repairing PRTV coating for electrical products and a preparation process thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a self-repairing PRTV coating for electrical products comprises the following raw materials in parts by weight: 10-15 parts of water-soluble adhesive, 1-2 parts of modified bridging agent, 1-2 parts of coating additive, 3-6 parts of talcum powder, 4-6 parts of modified inorganic pigment, 0.5-2 parts of catalyst, 1-2 parts of bentonite and 1-2 parts of turpentine.
The invention also discloses a preparation process of the self-repairing PRTV coating for the electrical product, which comprises the following steps:
s1: preprocessing and stirring, namely adding the water-soluble adhesive, the modified bridging agent, the coating auxiliary agent and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30 to 60 minutes to form a material A;
s2: breaking the wall, namely putting the stirred and mixed material A into a wall breaking machine for wall breaking treatment to form a material B;
s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C;
s4: and (3) carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes to form the PRTV coating.
The water-soluble adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the common bridging agent generates diradical after exposure, the diradical reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulation of the PRTV coating on the surface of an electrical product.
Preferably, the composition comprises the following raw materials in parts by weight: 10 parts of water-soluble adhesive, 1 part of modified bridging agent, 1 part of coating auxiliary agent, 3 parts of talcum powder, 4 parts of modified inorganic pigment, 0.5 part of catalyst, 1 part of bentonite and 1 part of turpentine.
Preferably, the composition comprises the following raw materials in parts by weight: 12 parts of water-soluble adhesive, 1.5 parts of modified bridging agent, 1.5 parts of coating auxiliary agent, 5 parts of talcum powder, 5 parts of modified inorganic pigment, 1 part of catalyst, 1.5 parts of bentonite and 1.5 parts of turpentine.
Preferably, the composition comprises the following raw materials in parts by weight: 15 parts of water-soluble adhesive, 2 parts of modified bridging agent, 2 parts of coating auxiliary agent, 6 parts of talcum powder, 6 parts of modified inorganic pigment, 2 parts of catalyst, 2 parts of bentonite and 2 parts of turpentine.
Preferably, the modification method of the modified bridging agent comprises the following steps:
a1: adding a modifier and water into the bridging agent to form a coagulant;
a2: stirring the mixture for 5-30 minutes under the pressure range of 10-20 MPA and the high temperature environment of 500 ℃ to form the modified bridging agent.
Preferably, the modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
Wherein, when any one of rubber, polytetrafluoroethylene and polyethylene reacts with the bridging agent under the pressure range of 10MPA-20MPA and the high temperature environment of 500 ℃, the rubber, the polytetrafluoroethylene and the polyethylene can be melted and uniformly distributed in the bridging agent, and the rubber, the polytetrafluoroethylene and the polyethylene have good physical and mechanical properties and chemical stability, the distribution among molecules in the material is uniform, the uniformity of the distribution of a three-dimensional structure is improved, the insulativity of the material is good, and the material is particularly suitable for PRTV coating.
Preferably, the coating auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickener, a defoaming agent and a leveling agent.
The PRTV coating has the advantage of quick air drying, the toughening agent improves the toughness of the PRTV coating when the PRTV coating covers an electrical product, the emulsifying agent and the thickening agent correspondingly improve the coating performance and promote the formation of a coating, and the defoaming agent and the leveling agent ensure that the PRTV coating has a smooth surface and does not have the influence of bubbles inside when the PRTV coating covers the electrical product, so that the insulating performance of the PRTV coating when the PRTV coating covers the electrical product is improved.
Preferably, the modified inorganic pigment is extracted from colored soil, colored ores, plants and marine animals, and the extraction method of the modified inorganic pigment comprises the following steps:
b1: preparing materials, namely preparing colored soil, colored ores, plants, marine animals and the like, and crushing the materials into powder by using a wall breaking machine;
b2: preparing a modified substance, wherein the modified substance is gum and transparent white gum is selected;
b3: mixing, mixing the transparent gelonin and the powder in B1 according to the ratio of 1:2, and fully mixing the mixture by a stirrer to form the modified inorganic pigment.
The modified inorganic pigment is mixed in the colored material by utilizing the transparent white gum, can fully separate the air around the colored material, can not lose color under the action of air oxidation, can maintain long-term color, is also suitable for the surface of an electric product, and can maintain the color of the electric product coated with the PRTV coating for a long time without frequent color compensation and the like when the modified inorganic pigment is used.
Preferably, the catalyst uses a bismuth-containing catalyst.
The invention has the technical effects and advantages that:
1. the water-soluble adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the common bridging agent generates diradical after exposure, the diradical interacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulativity of the PRTV coating on the surface of an electrical product;
2. in the invention, when any one of rubber, polytetrafluoroethylene and polyethylene reacts with the bridging agent within the pressure range of 10-20 MPA and under the high-temperature environment of 500 ℃, the rubber, the polytetrafluoroethylene and the polyethylene can be melted and uniformly distributed in the bridging agent, and the rubber, the polytetrafluoroethylene and the polyethylene have good physical and mechanical properties and chemical stability, are uniformly distributed among molecules in the material, improve the uniformity of distribution of a three-dimensional structure, have good insulating property and are particularly suitable for PRTV coatings;
3. the drier can enable the PRTV coating to have the advantage of quick air drying, the flexibilizer improves the toughness of the PRTV coating when the PRTV coating covers an electrical product, the emulsifier and the thickening agent correspondingly improve the coating performance and promote the formation of a coating, and the defoamer and the leveling agent ensure that the PRTV coating has a smooth surface and does not have the influence of bubbles inside when the PRTV coating covers the electrical product, so that the insulating performance of the PRTV coating when the PRTV coating covers the electrical product is improved;
4. the modified inorganic pigment of the invention utilizes the transparent white gum to mix in the colored material, can fully separate the air around the colored material, make it not lost the color by the air oxidation, can keep the long-term color, is suitable for the surface of the electric product too, when using the modified inorganic pigment, the color that PRTV coating coats on the electric product can keep for a long time, does not need frequent complementary color, etc.
Drawings
FIG. 1 is a process diagram for preparing a self-healing PRTV coating according to the present invention.
FIG. 2 is a process diagram of the modification method of the modified bridging agent of the present invention.
FIG. 3 is a process diagram of the modification method of the modified inorganic pigment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a self-repairing PRTV coating for an electrical product, which is shown in figures 1-3 and comprises the following raw materials in parts by weight: 10 parts of water-soluble adhesive, 1 part of modified bridging agent, 1 part of coating auxiliary agent, 3 parts of talcum powder, 4 parts of modified inorganic pigment, 0.5 part of catalyst, 1 part of bentonite and 1 part of turpentine.
The invention also discloses a preparation process of the self-repairing PRTV coating for the electrical product, which comprises the following steps:
s1: preprocessing and stirring, namely adding the water-soluble adhesive, the modified bridging agent, the coating auxiliary agent and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30 to 60 minutes to form a material A;
s2: breaking the wall, namely putting the stirred and mixed material A into a wall breaking machine for wall breaking treatment to form a material B;
s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C;
s4: and (3) carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes to form the PRTV coating.
The water-soluble adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the common bridging agent generates diradical after exposure, the diradical reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulation of the PRTV coating on the surface of an electrical product.
The modification method of the modified bridging agent comprises the following steps:
a1: adding a modifier and water into the bridging agent to form a coagulant;
a2: stirring the mixture for 5-30 minutes under the pressure range of 10-20 MPA and the high temperature environment of 500 ℃ to form the modified bridging agent.
The modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
Wherein, when any one of rubber, polytetrafluoroethylene and polyethylene reacts with the bridging agent under the pressure range of 10MPA-20MPA and the high temperature environment of 500 ℃, the rubber, the polytetrafluoroethylene and the polyethylene can be melted and uniformly distributed in the bridging agent, and the rubber, the polytetrafluoroethylene and the polyethylene have good physical and mechanical properties and chemical stability, the distribution among molecules in the material is uniform, the uniformity of the distribution of a three-dimensional structure is improved, the insulativity of the material is good, and the material is particularly suitable for PRTV coating.
The coating auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickening agent, a defoaming agent and a flatting agent.
The PRTV coating has the advantage of quick air drying, the toughening agent improves the toughness of the PRTV coating when the PRTV coating covers an electrical product, the emulsifying agent and the thickening agent correspondingly improve the coating performance and promote the formation of a coating, and the defoaming agent and the leveling agent ensure that the PRTV coating has a smooth surface and does not have the influence of bubbles inside when the PRTV coating covers the electrical product, so that the insulating performance of the PRTV coating when the PRTV coating covers the electrical product is improved.
The modified inorganic pigment is extracted from colored soil, colored ores, plants and marine animals, and the extraction method of the modified inorganic pigment comprises the following steps:
b1: preparing materials, namely preparing colored soil, colored ores, plants, marine animals and the like, and pulverizing the materials into powder by using a wall breaking machine;
b2: preparing a modified substance, wherein the modified substance is gum and transparent white gum is selected;
b3: mixing, mixing the transparent gelonin and the powder in B1 according to the ratio of 1:2, and fully mixing the mixture by a stirrer to form the modified inorganic pigment.
The modified inorganic pigment is mixed in the colored material by utilizing the transparent white gum, can fully separate the air around the colored material, can not lose color due to air oxidation, can maintain long-term color, is also suitable for the surface of an electric product, and when the modified inorganic pigment is used, the color of the electric product coated by the PRTV coating can be maintained for long time without frequent color compensation and the like.
The catalyst used was a bismuth-containing catalyst.
Example two
The invention provides a self-repairing PRTV coating for an electrical product, which is shown in figures 1-3 and comprises the following raw materials in parts by weight: 12 parts of water-soluble adhesive, 1.5 parts of modified bridging agent, 1.5 parts of coating additive, 5 parts of talcum powder, 5 parts of modified inorganic pigment, 1 part of catalyst, 1.5 parts of bentonite and 1.5 parts of turpentine.
The invention also discloses a preparation process of the self-repairing PRTV coating for the electrical product, which comprises the following steps:
s1: preprocessing and stirring, namely adding the water-soluble adhesive, the modified bridging agent, the coating auxiliary agent and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30 to 60 minutes to form a material A;
s2: breaking the wall, namely putting the stirred and mixed material A into a wall breaking machine for wall breaking treatment to form a material B;
s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C;
s4: and (3) carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes to form the PRTV coating.
The water-soluble adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the common bridging agent generates diradical after exposure, the diradical reacts with the polyhydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulativity of the PRTV coating on the surface of an electrical product.
The modification method of the modified bridging agent comprises the following steps:
a1: adding a modifier and water into the bridging agent to form a coagulant;
a2: stirring the mixture for 5-30 minutes in a high-temperature environment at 500 ℃ within the pressure range of 10-20 MPA to form the modified bridging agent.
The modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
Wherein, when any one of rubber, polytetrafluoroethylene and polyethylene reacts with the bridging agent under the pressure range of 10MPA-20MPA and the high temperature environment of 500 ℃, the rubber, the polytetrafluoroethylene and the polyethylene can be melted and uniformly distributed in the bridging agent, and the rubber, the polytetrafluoroethylene and the polyethylene have good physical and mechanical properties and chemical stability, the distribution among molecules in the material is uniform, the uniformity of the distribution of a three-dimensional structure is improved, the insulativity of the material is good, and the material is particularly suitable for PRTV coating.
The paint auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickening agent, a defoaming agent and a flatting agent.
The PRTV coating has the advantage of quick air drying, the toughening agent improves the toughness of the PRTV coating when the PRTV coating covers an electrical product, the emulsifying agent and the thickening agent correspondingly improve the coating performance and promote the formation of a coating, and the defoaming agent and the leveling agent ensure that the PRTV coating has a smooth surface and does not have the influence of bubbles inside when the PRTV coating covers the electrical product, so that the insulating performance of the PRTV coating when the PRTV coating covers the electrical product is improved.
The modified inorganic pigment is extracted from colored soil, colored ores, plants and marine animals, and the extraction method of the modified inorganic pigment comprises the following steps:
b1: preparing materials, namely preparing colored soil, colored ores, plants, marine animals and the like, and crushing the materials into powder by using a wall breaking machine;
b2: preparing a modified substance, wherein the modified substance is gum and transparent white gum is selected;
b3: mixing, mixing the transparent white gum and the powder in B1 according to the ratio of 1:2, and fully mixing the mixture by a stirrer to form the modified inorganic pigment.
The modified inorganic pigment is mixed in the colored material by utilizing the transparent white gum, can fully separate the air around the colored material, can not lose color under the action of air oxidation, can maintain long-term color, is also suitable for the surface of an electric product, and can maintain the color of the electric product coated with the PRTV coating for a long time without frequent color compensation and the like when the modified inorganic pigment is used.
The catalyst used was a bismuth-containing catalyst.
EXAMPLE III
The invention provides a self-repairing PRTV coating for an electrical product, which is shown in figures 1-3 and comprises the following raw materials in parts by weight: 15 parts of water-soluble adhesive, 2 parts of modified bridging agent, 2 parts of coating additive, 6 parts of talcum powder, 6 parts of modified inorganic pigment, 2 parts of catalyst, 2 parts of bentonite and 2 parts of turpentine.
The invention also discloses a preparation process of the self-repairing PRTV coating for the electrical product, which comprises the following steps:
s1: preprocessing and stirring, namely adding the water-soluble adhesive, the modified bridging agent, the coating auxiliary agent and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30 to 60 minutes to form a material A;
s2: breaking the wall, namely putting the stirred and mixed material A into a wall breaking machine for wall breaking treatment to form a material B;
s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C;
s4: and (3) carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes to form the PRTV coating.
The water-soluble adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the common bridging agent generates diradical after exposure, the diradical reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, and the modified bridging agent can increase the distribution uniformity of the three-dimensional structure on the basis of the original bridging agent so as to ensure that the insoluble substance is uniformly distributed, thereby improving the insulation of the PRTV coating on the surface of an electrical product.
The modification method of the modified bridging agent comprises the following steps:
a1: adding a modifier and water into the bridging agent to form a coagulant;
a2: stirring the mixture for 5-30 minutes under the pressure range of 10-20 MPA and the high temperature environment of 500 ℃ to form the modified bridging agent.
The modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
Wherein, when any one of rubber, polytetrafluoroethylene and polyethylene reacts with the bridging agent under the pressure range of 10MPA-20MPA and the high temperature environment of 500 ℃, the rubber, the polytetrafluoroethylene and the polyethylene can be melted and uniformly distributed in the bridging agent, and the rubber, the polytetrafluoroethylene and the polyethylene have good physical and mechanical properties and chemical stability, the distribution among molecules in the material is uniform, the uniformity of the distribution of a three-dimensional structure is improved, the insulativity of the material is good, and the material is particularly suitable for PRTV coating.
The coating auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickening agent, a defoaming agent and a flatting agent.
The PRTV coating has the advantage of quick air drying, the toughening agent improves the toughness of the PRTV coating when the PRTV coating covers an electrical product, the emulsifying agent and the thickening agent correspondingly improve the coating performance and promote the formation of a coating, and the defoaming agent and the leveling agent ensure that the PRTV coating has a smooth surface and does not have the influence of bubbles inside when the PRTV coating covers the electrical product, so that the insulating performance of the PRTV coating when the PRTV coating covers the electrical product is improved.
The modified inorganic pigment is extracted from colored soil, colored ores, plants and marine animals, and the extraction method of the modified inorganic pigment comprises the following steps:
b1: preparing materials, namely preparing colored soil, colored ores, plants, marine animals and the like, and crushing the materials into powder by using a wall breaking machine;
b2: preparing a modified substance, wherein the modified substance is gum and transparent white gum is selected;
b3: mixing, mixing the transparent gelonin and the powder in B1 according to the ratio of 1:2, and fully mixing the mixture by a stirrer to form the modified inorganic pigment.
The modified inorganic pigment is mixed in the colored material by utilizing the transparent white gum, can fully separate the air around the colored material, can not lose color under the action of air oxidation, can maintain long-term color, is also suitable for the surface of an electric product, and can maintain the color of the electric product coated with the PRTV coating for a long time without frequent color compensation and the like when the modified inorganic pigment is used.
The catalyst used was a bismuth-containing catalyst.
Claims (10)
1. The self-repairing PRTV coating for the electrical products is characterized by comprising the following raw materials in parts by weight: 10-15 parts of water-soluble adhesive, 1-2 parts of modified bridging agent, 1-2 parts of coating additive, 3-6 parts of talcum powder, 4-6 parts of modified inorganic pigment, 0.5-2 parts of catalyst, 1-2 parts of bentonite and 1-2 parts of turpentine.
2. A process for preparing a self-healing PRTV coating for electrical products, comprising the self-healing PRTV coating for electrical products of claim 1, characterized in that: further comprising the steps of:
s1: preprocessing and stirring, namely adding the water-soluble adhesive, the modified bridging agent, the coating auxiliary agent and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30 to 60 minutes to form a material A;
s2: breaking the wall, namely putting the stirred and mixed material A into a wall breaking machine for wall breaking treatment to form a material B;
s3: feeding the material B after wall breaking into a reaction kettle, adding bentonite, turpentine and modified inorganic pigment into the reaction kettle, and reacting at 100-180 ℃ for 10-20 minutes to form a material C;
s4: and (3) carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes to form the PRTV coating.
3. The process for preparing a self-healing PRTV coating for electrical products according to claim 2, wherein: the composite material comprises the following raw materials in parts by weight: 10 parts of water-soluble adhesive, 1 part of modified bridging agent, 1 part of coating auxiliary agent, 3 parts of talcum powder, 4 parts of modified inorganic pigment, 0.5 part of catalyst, 1 part of bentonite and 1 part of turpentine.
4. The process of claim 3 for preparing a self-healing PRTV coating for electrical products, wherein: the composite material comprises the following raw materials in parts by weight: 12 parts of water-soluble adhesive, 1.5 parts of modified bridging agent, 1.5 parts of coating auxiliary agent, 5 parts of talcum powder, 5 parts of modified inorganic pigment, 1 part of catalyst, 1.5 parts of bentonite and 1.5 parts of turpentine.
5. The process of claim 4 for preparing a self-healing PRTV coating for electrical products, wherein: the material comprises the following raw materials in parts by weight: 15 parts of water-soluble adhesive, 2 parts of modified bridging agent, 2 parts of coating auxiliary agent, 6 parts of talcum powder, 6 parts of modified inorganic pigment, 2 parts of catalyst, 2 parts of bentonite and 2 parts of turpentine.
6. The process of claim 5 for preparing a self-healing PRTV coating for electrical products, wherein: the modification method of the modified bridging agent comprises the following steps:
a1: adding a modifier and water into the bridging agent to form a coagulant;
a2: stirring the mixture for 5-30 minutes under the pressure range of 10-20 MPA and the high temperature environment of 500 ℃ to form the modified bridging agent.
7. The process of claim 6, wherein the self-healing PRTV coating for electrical products comprises: the modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
8. The process of claim 7 for preparing a self-healing PRTV coating for electrical products, wherein: the coating auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickening agent, a defoaming agent and a flatting agent.
9. The process of claim 8 for preparing a self-healing PRTV coating for electrical products, wherein: the modified inorganic pigment is extracted from colored soil, colored ores, plants and marine animals, and the extraction method of the modified inorganic pigment comprises the following steps:
b1: preparing materials, namely preparing colored soil, colored ores, plants, marine animals and the like, and pulverizing the materials into powder by using a wall breaking machine;
b2: preparing a modified substance, wherein the modified substance is gum and transparent white gum is selected;
b3: mixing, mixing the transparent gelonin and the powder in B1 according to the ratio of 1:2, and fully mixing the mixture by a stirrer to form the modified inorganic pigment.
10. The process of claim 9 for preparing a self-healing PRTV coating for electrical products, wherein: the catalyst used was a bismuth-containing catalyst.
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| DE10130968A1 (en) * | 2001-06-27 | 2003-01-16 | Envision Technologies Gmbh | Coated polymer material for use e.g. as cell carrier or medical implant, obtained by contacting swollen polymer network containing diffusible reaction partner with second reaction partner in liquid medium |
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| CN110423552A (en) * | 2019-08-01 | 2019-11-08 | 北京国电富通科技发展有限责任公司 | A kind of selfreparing anti-pollution flashover coating, preparation method and application |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10130968A1 (en) * | 2001-06-27 | 2003-01-16 | Envision Technologies Gmbh | Coated polymer material for use e.g. as cell carrier or medical implant, obtained by contacting swollen polymer network containing diffusible reaction partner with second reaction partner in liquid medium |
| CN106318216A (en) * | 2015-06-30 | 2017-01-11 | 天津市仕翔电气科技有限公司 | PRTV paint |
| CN108264840A (en) * | 2018-01-19 | 2018-07-10 | 北京国电富通科技发展有限责任公司 | A kind of novel antifouling dodges coating and preparation method thereof |
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Application publication date: 20220826 |