CN114921181A - PRTV anti-pollution flashover coating for electrical products at room temperature and preparation process thereof - Google Patents
PRTV anti-pollution flashover coating for electrical products at room temperature and preparation process thereof Download PDFInfo
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- CN114921181A CN114921181A CN202210760517.5A CN202210760517A CN114921181A CN 114921181 A CN114921181 A CN 114921181A CN 202210760517 A CN202210760517 A CN 202210760517A CN 114921181 A CN114921181 A CN 114921181A
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- 238000000576 coating method Methods 0.000 title claims abstract description 152
- 239000011248 coating agent Substances 0.000 title claims abstract description 151
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 77
- 239000000843 powder Substances 0.000 claims abstract description 52
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 29
- 239000000654 additive Substances 0.000 claims abstract description 27
- 230000000996 additive effect Effects 0.000 claims abstract description 27
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 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 abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 239000003607 modifier Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 47
- -1 polytetrafluoroethylene Polymers 0.000 claims description 40
- 239000012752 auxiliary agent Substances 0.000 claims description 23
- 239000004698 Polyethylene Substances 0.000 claims description 20
- 229920001971 elastomer Polymers 0.000 claims description 20
- 229920000573 polyethylene Polymers 0.000 claims description 20
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 20
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 20
- 239000005060 rubber Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 16
- 238000002715 modification method Methods 0.000 claims description 11
- 239000000440 bentonite Substances 0.000 claims description 10
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000003995 emulsifying agent Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000010455 vermiculite Substances 0.000 claims description 10
- 229910052902 vermiculite Inorganic materials 0.000 claims description 10
- 235000019354 vermiculite Nutrition 0.000 claims description 10
- 239000002518 antifoaming agent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000010009 beating Methods 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000009461 vacuum packaging Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 4
- 229910052797 bismuth Inorganic materials 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 15
- 238000007605 air drying Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
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- 238000010438 heat treatment Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000012745 toughening agent Substances 0.000 description 5
- 239000013032 Hydrocarbon resin Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 229920006270 hydrocarbon resin Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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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
- C09D201/00—Coating compositions based on unspecified macromolecular 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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Abstract
The invention discloses a PRTV anti-pollution flashover coating for electrical products at room temperature and a preparation process thereof, relating to the field of anti-pollution flashover coatings PRTV, and the PRTV anti-pollution flashover coating comprises the following raw materials in parts by weight: 55-100 parts of water-based adhesive, 1-2 parts of bridging agent, 0.1-0.2 part of modified coating additive, 1-2 parts of talcum powder, 0.5-3 parts of inorganic pigment, 0.5-1 part of catalyst, 1-2 parts of modified bentonite, 1-2 parts of titanium dioxide and 0.5-1.8 parts of fluorescent powder. The water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; the modified coating additive is prepared by adding a modifier and water in a high-temperature and high-pressure environment, and the formed modified coating additive is favorable for the high-temperature resistance effect of the coating.
Description
Technical Field
The invention relates to the field of anti-pollution flashover coating PRTV, in particular to a PRTV anti-pollution flashover coating for electrical products at room temperature and a preparation process thereof.
Background
Electrical products such as insulators are subject to a contamination flashover. 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. In recent years, RTV (room temperature vulcanized silicone rubber) anti-pollution flashover coating for short is provided, and the outstanding characteristics of long effect, maintenance-free property and the like are taken as a new technology, so that the new material is rapidly developed in domestic electric product application. But the prior RTV anti-pollution flashover coating has lower service performance.
Therefore, it is necessary to invent a PRTV anti-pollution flashover coating for electrical products at room temperature and a preparation process thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a PRTV anti-pollution flashover coating for electrical products at room temperature 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 PRTV anti-pollution flashover coating for electrical products at room temperature comprises the following raw materials in parts by weight: 55-100 parts of water-based adhesive, 1-2 parts of bridging agent, 0.1-0.2 part of modified coating additive, 1-2 parts of talcum powder, 0.5-3 parts of inorganic pigment, 0.5-1 part of catalyst, 1-2 parts of modified bentonite, 1-2 parts of titanium dioxide and 0.5-1.8 parts of fluorescent powder.
Wherein, the water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; after exposure, a common bridging agent generates a diradical which reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, so that the insoluble substance is uniformly distributed, the insulativity of the PRTV coating on the surface of an electrical product is improved, and the modified coating auxiliary agent is added with a modifier and water under the environment of high temperature and high pressure, so that the formed modified coating auxiliary agent is beneficial to the high temperature resistance effect of the coating.
The invention also discloses a preparation process of the PRTV anti-pollution flashover coating for the electrical product at room temperature, which comprises the PRTV anti-pollution flashover coating for the electrical product at room temperature, and also comprises the following steps:
s1: stirring, namely adding the water-based adhesive, the bridging agent, the modified coating additive and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30-60 minutes to form a material A;
s2: breaking the walls, 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 wall-broken material B into a reaction kettle, adding modified bentonite, titanium dioxide, an inorganic pigment and a modified inorganic pigment into the reaction kettle, and reacting at the temperature of 100-180 ℃ for 10-20 minutes to form a material C;
s4: performing catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes;
s5: and adding auxiliary materials, adding the fluorescent powder into the material C processed in the step S4, stirring by using a stirrer at the temperature of 45-60 ℃ and the pressure of 0.1-1.5 Mpa for 15-30 min, and forming the PRTV coating.
Preferably, the composition comprises the following raw materials in parts by weight: 55 parts of water-based adhesive, 1 part of bridging agent, 0.1 part of modified coating additive, 1 part of talcum powder, 0.5 part of inorganic pigment, 0.5 part of catalyst, 1 part of modified bentonite, 1 part of titanium dioxide and 0.5 part of fluorescent powder.
Preferably, the composition comprises the following raw materials in parts by weight: 80 parts of water-based adhesive, 1.5 parts of bridging agent, 0.15 part of modified coating additive, 1.5 parts of talcum powder, 2 parts of inorganic pigment, 0.8 part of catalyst, 1.5 parts of modified bentonite, 1.5 parts of titanium dioxide and 1.5 parts of fluorescent powder.
Preferably, the composition comprises the following raw materials in parts by weight: 100 parts of water-based adhesive, 2 parts of bridging agent, 0.2 part of modified coating additive, 2 parts of talcum powder, 3 parts of inorganic pigment, 1 part of catalyst, 2 parts of modified bentonite, 2 parts of titanium dioxide and 1.8 parts of fluorescent powder.
Preferably, the modification method of the modified coating auxiliary agent comprises the following steps:
a1: adding a modifier and water into the paint auxiliary 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 coating additive.
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 modified coating auxiliary agent comprises a drier, a toughening agent, 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 method for modifying modified bentonite comprises the following steps:
b1: preparing materials, namely preparing bentonite, beating the bentonite into powder by using a wall breaking machine, and drying the powder for later use to form powder A;
b2: mixing and stirring, namely mixing vermiculite, Fe and powder A under the vacuum condition, and stirring uniformly to form powder B;
b3: and (4) vacuum bagging, namely vacuum packaging the powder B generated in the step B2 under the vacuum condition.
The modified bentonite has the advantages that vermiculite, Fe and powder A are mixed under the vacuum condition, so that the modified bentonite has a heat generation phenomenon when being stirred with other materials, the coating can be more fully stirred for use, and the coating is easy to stir under the heating condition.
The invention has the technical effects and advantages that:
1. the water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; after exposure, a common bridging agent generates a diradical which reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, so that the insoluble substance is uniformly distributed, the insulativity of the PRTV coating on the surface of an electrical product is improved, and the modified coating auxiliary agent is added with a modifier and water under the environment of high temperature and high pressure, so that the formed modified coating auxiliary agent is beneficial to the high temperature resistance effect of the coating;
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 in a 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 three-dimensional structure distribution, have good insulating property and are particularly suitable for PRTV coating;
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. according to the invention, the modified bentonite is prepared by mixing vermiculite, Fe and powder A under a vacuum condition, so that a modified bentonite material and other materials have a heat generation phenomenon during mutual stirring, the coating can be more fully stirred for use, and the coating is easy to stir under a heating condition.
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 a modification method of the modified coating additive of the present invention.
FIG. 3 is a process diagram of the modified bentonite modification method of the 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 PRTV anti-pollution flashover coating for electrical products at room temperature as shown in figures 1-3, which comprises the following raw materials in parts by weight: 55 parts of water-based adhesive, 1 part of bridging agent, 0.1 part of modified coating additive, 1 part of talcum powder, 0.5 part of inorganic pigment, 0.5 part of catalyst, 1 part of modified bentonite, 1 part of titanium dioxide and 0.5 part of fluorescent powder.
Wherein, the water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; after exposure, a common bridging agent generates a diradical which reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, so that the insoluble substance is uniformly distributed, the insulativity of the PRTV coating on the surface of an electrical product is improved, and the modified coating auxiliary agent is added with a modifier and water under the environment of high temperature and high pressure, so that the formed modified coating auxiliary agent is beneficial to the high temperature resistance effect of the coating.
The invention also discloses a preparation process of the PRTV anti-pollution flashover coating for the electrical product at room temperature, which comprises the PRTV anti-pollution flashover coating for the electrical product at room temperature, and also comprises the following steps:
s1: stirring, namely adding the water-based adhesive, the bridging agent, the modified 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 wall-broken material B into a reaction kettle, adding modified bentonite, titanium dioxide, an inorganic pigment and a modified inorganic pigment into the reaction kettle, and reacting at the temperature of 100-180 ℃ for 10-20 minutes to form a material C;
s4: carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes;
s5: adding auxiliary materials, adding the fluorescent powder into the material C processed in the step S4, stirring by using a stirrer at the temperature of 45-60 ℃ and the pressure of 0.1-1.5 Mpa for 15-30 min to form the PRTV coating.
The modification method of the modified coating additive comprises the following steps:
a1: adding a modifier and water into the paint auxiliary 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 coating additive.
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 modified 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 modification method of the modified bentonite comprises the following steps:
b1: preparing materials, namely preparing bentonite, beating the bentonite into powder by using a wall breaking machine, and drying the powder for later use to form powder A;
b2: mixing and stirring, namely mixing vermiculite, Fe and powder A under the vacuum condition, and stirring uniformly to form powder B;
b3: and (4) vacuum bagging, namely vacuum packaging the powder B generated in the step B2 under the vacuum condition.
The modified bentonite has the advantages that vermiculite, Fe and powder A are mixed under the vacuum condition, so that the modified bentonite has a heat generation phenomenon when being stirred with other materials, the coating can be more fully stirred for use, and the coating is easy to stir under the heating condition.
Example two
The invention provides a PRTV anti-pollution flashover coating for electrical products at room temperature as shown in figures 1-3, which comprises the following raw materials in parts by weight: 80 parts of water-based adhesive, 1.5 parts of bridging agent, 0.15 part of modified coating additive, 1.5 parts of talcum powder, 2 parts of inorganic pigment, 0.8 part of catalyst, 1.5 parts of modified bentonite, 1.5 parts of titanium dioxide and 1.5 parts of fluorescent powder.
Wherein, the water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; after exposure, a common bridging agent generates a diradical which reacts with the polyhydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, so that the insoluble substance is uniformly distributed, the insulativity of the PRTV coating on the surface of an electrical product is improved, and the modified coating auxiliary agent is added with a modifier and water under the high-temperature and high-pressure environment, so that the formed modified coating auxiliary agent is favorable for the high-temperature resistance effect of the coating.
The invention also discloses a preparation process of the PRTV anti-pollution flashover coating for the electrical product at room temperature, which comprises the PRTV anti-pollution flashover coating for the electrical product at room temperature, and also comprises the following steps:
s1: stirring, namely adding the water-based adhesive, the bridging agent, the modified coating additive and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30-60 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 wall-broken material B into a reaction kettle, adding modified bentonite, titanium dioxide, an inorganic pigment and a modified inorganic pigment into the reaction kettle, and reacting at the temperature of 100-180 ℃ for 10-20 minutes to form a material C;
s4: carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes;
s5: and adding auxiliary materials, adding the fluorescent powder into the material C processed in the step S4, stirring by using a stirrer at the temperature of 45-60 ℃ and the pressure of 0.1-1.5 Mpa for 15-30 min, and forming the PRTV coating.
The modification method of the modified coating additive comprises the following steps:
a1: adding a modifier and water into the paint auxiliary 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 coating additive.
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 modified 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 modification method of the modified bentonite comprises the following steps:
b1: preparing materials, namely preparing bentonite, beating the bentonite into powder by using a wall breaking machine, and drying the powder for later use to form powder A;
b2: mixing and stirring, namely mixing vermiculite, Fe and the powder A under the vacuum condition, and stirring uniformly to form powder B;
b3: and (4) vacuum bagging, namely vacuum packaging the powder B generated in the step B2 under the vacuum condition.
The modified bentonite is characterized in that vermiculite, Fe and powder A are mixed under a vacuum condition, so that a modified bentonite material and other materials have a heat generation phenomenon during mutual stirring, the coating can be more fully stirred for use, and the coating is easy to stir under a heating condition.
EXAMPLE III
The invention provides a PRTV anti-pollution flashover coating for electrical products at room temperature as shown in figures 1-3, which comprises the following raw materials in parts by weight: 100 parts of water-based adhesive, 2 parts of bridging agent, 0.2 part of modified coating additive, 2 parts of talcum powder, 3 parts of inorganic pigment, 1 part of catalyst, 2 parts of modified bentonite, 2 parts of titanium dioxide and 1.8 parts of fluorescent powder.
Wherein, the water-based adhesive is an adhesive prepared from a film-forming material which can be dispersed or dissolved in water, and has wide application; after exposure, a common bridging agent generates a diradical which reacts with the hydrocarbon resin to form a bridge bond between polymer molecular chains and becomes an insoluble substance with a three-dimensional structure, so that the insoluble substance is uniformly distributed, the insulativity of the PRTV coating on the surface of an electrical product is improved, and the modified coating auxiliary agent is added with a modifier and water under the environment of high temperature and high pressure, so that the formed modified coating auxiliary agent is beneficial to the high temperature resistance effect of the coating.
The invention also discloses a preparation process of the PRTV anti-pollution flashover coating for the electrical product at room temperature, which comprises the PRTV anti-pollution flashover coating for the electrical product at room temperature and also comprises the following steps:
s1: stirring, namely adding the water-based adhesive, the bridging agent, the modified coating additive and the talcum powder into a stirring mixer according to a certain proportion, and stirring and mixing for 30-60 minutes to form a material A;
s2: breaking the walls, 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 wall-broken material B into a reaction kettle, adding modified bentonite, titanium dioxide, an inorganic pigment and a modified inorganic pigment into the reaction kettle, and reacting at the temperature of 100-180 ℃ for 10-20 minutes to form a material C;
s4: performing catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes;
s5: and adding auxiliary materials, adding the fluorescent powder into the material C processed in the step S4, stirring by using a stirrer at the temperature of 45-60 ℃ and the pressure of 0.1-1.5 Mpa for 15-30 min, and forming the PRTV coating.
The modification method of the modified coating additive comprises the following steps:
a1: adding a modifier and water into the paint auxiliary 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 coating additive.
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 modified 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 modification method of the modified bentonite comprises the following steps:
b1: preparing materials, namely preparing bentonite, beating the bentonite into powder by using a wall breaking machine, and drying the powder for later use to form powder A;
b2: mixing and stirring, namely mixing vermiculite, Fe and powder A under the vacuum condition, and stirring uniformly to form powder B;
b3: and (4) vacuum bagging, namely vacuum packaging the powder B generated in the step B2 under the vacuum condition.
The modified bentonite has the advantages that vermiculite, Fe and powder A are mixed under the vacuum condition, so that the modified bentonite has a heat generation phenomenon when being stirred with other materials, the coating can be more fully stirred for use, and the coating is easy to stir under the heating condition.
Claims (10)
1. The PRTV anti-pollution flashover coating for electrical products at room temperature is characterized by comprising the following raw materials in parts by weight: 55-100 parts of water-based adhesive, 1-2 parts of bridging agent, 0.1-0.2 part of modified coating additive, 1-2 parts of talcum powder, 0.5-3 parts of inorganic pigment, 0.5-1 part of catalyst, 1-2 parts of modified bentonite, 1-2 parts of titanium dioxide and 0.5-1.8 parts of fluorescent powder.
2. A process for preparing a PRTV anti-pollution flashover coating for room temperature electrical products, comprising the PRTV anti-pollution flashover coating for room temperature electrical products of claim 1, wherein: further comprising the steps of:
s1: stirring, namely adding the water-based adhesive, the bridging agent, the modified 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 walls, 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 wall-broken material B into a reaction kettle, adding modified bentonite, titanium dioxide, an inorganic pigment and a modified inorganic pigment into the reaction kettle, and reacting at the temperature of 100-180 ℃ for 10-20 minutes to form a material C;
s4: carrying out catalytic reaction, discharging the material C, adding a catalyst into the equipment, and stirring for 10 minutes;
s5: and adding auxiliary materials, adding the fluorescent powder into the material C processed in the step S4, stirring by using a stirrer at the temperature of 45-60 ℃ and the pressure of 0.1-1.5 Mpa for 15-30 min, and forming the PRTV coating.
3. The process for preparing a PRTV anti-pollution flashover coating for electrical products at room temperature according to claim 2, wherein: the composite material comprises the following raw materials in parts by weight: 55 parts of water-based adhesive, 1 part of bridging agent, 0.1 part of modified coating additive, 1 part of talcum powder, 0.5 part of inorganic pigment, 0.5 part of catalyst, 1 part of modified bentonite, 1 part of titanium dioxide and 0.5 part of fluorescent powder.
4. The process according to claim 3, wherein the PRTV anti-pollution flashover coating material comprises the following steps: the material comprises the following raw materials in parts by weight: 80 parts of water-based adhesive, 1.5 parts of bridging agent, 0.15 part of modified coating additive, 1.5 parts of talcum powder, 2 parts of inorganic pigment, 0.8 part of catalyst, 1.5 parts of modified bentonite, 1.5 parts of titanium dioxide and 1.5 parts of fluorescent powder.
5. The process for preparing PRTV anti-pollution flashover coating for electrical products at room temperature as claimed in claim 4, wherein: the material comprises the following raw materials in parts by weight: 100 parts of water-based adhesive, 2 parts of bridging agent, 0.2 part of modified coating additive, 2 parts of talcum powder, 3 parts of inorganic pigment, 1 part of catalyst, 2 parts of modified bentonite, 2 parts of titanium dioxide and 1.8 parts of fluorescent powder.
6. The process according to claim 5, wherein the PRTV anti-pollution flashover coating material comprises the following steps: the modification method of the modified coating additive comprises the following steps:
a1: adding a modifier and water into the paint auxiliary 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 coating additive.
7. The process for preparing PRTV anti-pollution flashover coating for electrical products at room temperature as claimed in claim 6, wherein: the modifier is at least one of rubber, polytetrafluoroethylene and polyethylene.
8. The process according to claim 7, wherein the PRTV anti-pollution flashover coating material comprises the following steps: the modified paint auxiliary agent comprises a drier, a flexibilizer, an emulsifier, a thickening agent, a defoaming agent and a flatting agent.
9. The process according to claim 8, wherein the anti-pollution flashover coating for PRTV comprises the following steps: the modification method of the modified bentonite comprises the following steps:
b1: preparing materials, namely preparing bentonite, beating the bentonite into powder by using a wall breaking machine, and drying the powder for later use to form powder A;
b2: mixing and stirring, namely mixing vermiculite, Fe and powder A under the vacuum condition, and stirring uniformly to form powder B;
b3: and (4) vacuum bagging, namely vacuum packaging the powder B generated in the step B2 under the vacuum condition.
10. The process according to claim 9, wherein the anti-pollution flashover coating for PRTV comprises the following steps: the catalyst used was a bismuth-containing catalyst.
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Application publication date: 20220819 |