CN115449291B - Waterproof insulating paint and application thereof - Google Patents

Waterproof insulating paint and application thereof Download PDF

Info

Publication number
CN115449291B
CN115449291B CN202110644523.XA CN202110644523A CN115449291B CN 115449291 B CN115449291 B CN 115449291B CN 202110644523 A CN202110644523 A CN 202110644523A CN 115449291 B CN115449291 B CN 115449291B
Authority
CN
China
Prior art keywords
waterproof insulating
circuit board
waterproof
insulating paint
insulating film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110644523.XA
Other languages
Chinese (zh)
Other versions
CN115449291A (en
Inventor
李鹏飞
谭东升
任林德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honor Device Co Ltd
Original Assignee
Honor Device Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Priority to CN202110644523.XA priority Critical patent/CN115449291B/en
Priority to PCT/CN2022/090016 priority patent/WO2022257641A1/en
Publication of CN115449291A publication Critical patent/CN115449291A/en
Application granted granted Critical
Publication of CN115449291B publication Critical patent/CN115449291B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • 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
    • C09D201/02—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C09D201/04—Coating compositions based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing halogen atoms
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08—Anti-corrosive paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • 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

Abstract

The application relates to the technical field of waterproof insulating materials and electronic consumables, and provides waterproof insulating paint and application thereof. The waterproof insulating paint comprises at least one waterproof insulating film-forming component from the following I to III: i: an organolinear siloxane compound having the following structural formula a; r in formula A 1 To R 8 Independently a hydrogen atom, a halogen atom, a methoxy group, an ethoxy group, and C 1 ‑C 3 Alkyl, C 3 ‑C 10 Cycloalkyl, C 6 ‑C 15 Any one of aryl groups, m is an integer of 10-100; II: having the structure C n H 2n+n N-alkanes or isoparaffins as shown in B; wherein n in the structural formula B is an integer of 8-15; III: having the structure C x F y H z N j O k Wherein x in the structural formula C is an integer of 8 to 20, y is an integer of 6 to 42, z is an integer of 0 to 9, j is 0 or 1, and k is 0 or 1;
Figure DDA0003108592170000011

Description

Waterproof insulating paint and application thereof
Technical Field
The invention belongs to the technical field of waterproof insulating materials and electronic consumables, and particularly relates to waterproof insulating paint and application thereof.
Background
With the increasing integration level of the circuit board, the modularization degree is higher and higher, and the connector is widely and largely used in the electronic product. The connector is used as a bridge for connecting components and has the functions of conducting signals and currents, and the flexibility and convenience of electronic product assembly, maintenance and upgrading are greatly improved by using the connector. The linker welded on the printed circuit board (Printed Circuit Board, PCB) board after the liquid is fed into the periphery of the electronic product is easy to short-circuit and cause electrochemical corrosion to cause functional failure.
Taking a Board To Board (BTB) connector widely used as an example, one of the existing BTB connector protection technologies in the industry is as shown in fig. 1, in which a frame-shaped foam/rubber ring 2 is attached to the periphery of a BTB connector body 1, and the foam/rubber ring 2 is compressed between a BTB male reinforcement steel plate 3 and a PCB 4 to realize plugging, and the technology mainly has the following problems: 1) Occupying the space of the veneer, the foam/rubber ring needs to have a certain width, and devices around the BTB need to avoid the space; 2) The foam/rubber ring needs to have a certain compression amount, which is higher than the height of the BTB female head to influence the buckling; 3) In order to realize compression and top sealing, the size of the BTB male head reinforced steel plate needs to be increased; 4) The sizes of the BTBs are different, the design, the processing and the fitting are customized according to the size of each BTB, and the manufacturing process is complex; 5) The long-term compression reverse elasticity of foam is reduced, and the protection effect is reduced.
In the second prior art, vacuum nano-plating is performed on a circuit board, and a hydrophobic or water-proof solid film layer is formed on the surface of a connector through vapor deposition. Even if the thickness precision of the film layer is improved, the solid film layer cannot be effectively pierced when the male and female connectors are buckled, so that the male and female connectors cannot be conducted.
In the third prior art, waterproof and/or insulating paint is also available at present, but research shows that although the existing waterproof insulating paint can achieve waterproof or insulating or achieve waterproof and insulating effects at the same time, the film layer of the waterproof insulating paint cannot be effectively pierced when the male and female connectors are buckled, so that the male and female connectors of the connector cannot be conducted, such as fluorinated liquid, three-proofing paint and the like, and cannot be used for waterproof of a connector scene.
Disclosure of Invention
The embodiment of the application aims to provide a waterproof insulating coating, and aims to solve the technical problems that the existing vacuum nano coating, waterproof coating and/or insulating coating cannot be effectively punctured and communicated in waterproof application of an electric connector, and buckling is unstable and waterproof effect is not ideal due to difficult control of a film layer.
In order to achieve the above object, according to an aspect of the embodiments of the present invention, there is provided a waterproof insulating paint. The waterproof insulating coating provided by the embodiment of the invention comprises at least one waterproof insulating film-forming component from the following I to III:
i: an organolinear siloxane compound having the following structural formula a:
Figure BDA0003108592150000021
wherein R in structural formula A 1 To R 8 Independently a hydrogen atom, a halogen atom, a methoxy group, an ethoxy group, and C 1 -C 3 Alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 15 Any one of aryl groups, m is an integer of 10-100;
II: n-alkane or isoparaffin shown in the following structural formula B; wherein n in the structural formula B is an integer of 8-15;
C n H 2n+n B；
III: a fluorine-containing aliphatic polymer represented by the following structural formula C, wherein x in the structural formula C is an integer of 8 to 20, y is an integer of 6 to 42, z is an integer of 0 to 9, j is 0 or 1, and k is 0 or 1;
C x F y H z N j O k C。
the waterproof insulating paint provided by the embodiment of the invention can be effectively formed into a film on a connector, and the film has good insulativity and waterproof performance, so that a device containing the waterproof insulating paint film, such as the connector, has good waterproof effect, and meanwhile, the insulativity can not influence and cause short circuit of pins between pins of the connector, so that the stability of the performance of the corresponding device is improved, and the service life of the device is prolonged. Meanwhile, the pasty (or fat-like) film layer formed by the waterproof insulating paint has good puncture characteristics such as proper penetration, and can be effectively punctured by a fixed point under the action of external force to realize the buckling conduction connection of the male and female heads of the connector. Meanwhile, the film layer formed by the waterproof insulating paint has good extrusion and calendaring characteristics, the severe requirement on the thickness of the coating formed by the waterproof insulating paint is reduced, the thickness of the film layer can be directly extruded and regulated, and good waterproof and insulating effects are realized.
Optionally, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components I and II, and the mass ratio of the two waterproof insulating film-forming components I and II is 3 (0.8-1.2).
Optionally, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components I and III, and the mass ratio of the two waterproof insulating film-forming components I and III is 3 (1.5-2.5).
Optionally, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components II and III, and the mass ratio of the two waterproof insulating film-forming components II and III is 1 (1.3-2.8).
Optionally, the waterproof insulating coating comprises a mixture of three waterproof insulating film-forming components I, II and III, wherein the mass ratio of the three waterproof insulating film-forming components I, II and III is 3 (0.8-1.2) (1.5-2.5).
Through the control and optimization of the types of the waterproof insulating film forming components, the waterproof effect of the waterproof insulating paint is effectively improved on the basis of imparting the insulating effect of the waterproof insulating paint, the characteristics of fixed-point puncture such as improvement of penetration degree are improved, the applicability such as the applicability in the connector field is improved, and the extrusion calendaring characteristics of the waterproof insulating paint film layer can also be improved.
Optionally, the waterproof insulating coating further comprises at least one of a tackifier and a volatile solvent. By adding the tackifier and the volatile solvent in the waterproof insulating paint, the uniformity of the dispersion of the components contained in the waterproof insulating paint is improved, the film forming quality of the waterproof insulating paint is improved, and the diversity of film forming methods of the waterproof insulating paint is improved.
Further, the viscosity modifier comprises at least one of titanium dioxide, silicon dioxide, talcum powder and calcium carbonate;
further, the volatile solvent includes at least one of a perfluorinated solvent, an ester solvent, and an ether solvent.
Specifically, the perfluorinated solvent comprises at least one of methyl perfluorobutyl ether, methyl perfluoroisobutyl ether, ethyl perfluorobutyl ether and ethyl perfluoroisobutyl ether; the ester solvent comprises at least one of ethyl acetate and methyl acetate; the ether solvent comprises at least one of diethyl ether and petroleum ether.
By selecting the types of the adhesion regulator and the volatile solvent, the functions of the adhesion regulator and the volatile solvent in the waterproof insulating paint are improved, the solubility of solutes of the waterproof insulating paint such as waterproof insulating film forming components is improved, the viscosity of the waterproof insulating paint is improved, the dispersion stability of each component of the waterproof insulating paint is improved, and the waterproof insulating paint is improved on the basis of improving the film forming quality of the waterproof insulating paint, such as fixed-point puncture, film extrusion calendaring characteristics and waterproof insulating performance.
Further, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component and the adhesion regulator, and the mass ratio of the waterproof insulating film-forming component to the adhesion regulator is 1 (1-2).
Or further, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component and the volatile solvent, and the mass ratio of the waterproof insulating film-forming component to the volatile solvent is 1 (5-20).
Or further, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component, the volatile solvent and the adhesion regulator, and the mass ratio of the waterproof insulating film-forming component to the volatile solvent to the adhesion regulator is 1 (5-20) (1-2).
The stability of the waterproof insulating paint is improved, the film forming quality of the waterproof insulating paint is improved, and the fixed-point puncture, film extrusion calendaring property and waterproof insulating property of the waterproof insulating paint are further improved by controlling and adjusting the content proportion of each component of the waterproof insulating paint.
Optionally, the penetration of the film layer formed by the waterproof insulating paint is 200-350 (0.1 mm); and/or
Optionally, the resistance of the film layer formed by the waterproof insulating paint is more than 10 8 Omega; and/or
Optionally, the surface water contact angle of the film layer formed by the waterproof insulating coating is more than 100 degrees; and/or
Optionally, the leakage current of the film layer formed by the waterproof insulating paint is less than 0.01mA.
The waterproof insulating coating is endowed with good puncture characteristics, high insulativity and water resistance based on the components and the types of the components contained in the waterproof insulating coating.
On the other hand, the embodiment of the invention provides an application method of the waterproof insulating paint, which is applied to circuit board connectors, electronic products, household electrical appliances and automobiles. Because the waterproof insulating coating provided by the embodiment of the invention has the good stability and film forming property, the film layer has excellent waterproof property, insulating property, cone penetration and film extrusion calendaring property, the application field of the waterproof insulating coating provided by the embodiment of the invention is effectively expanded, the application effect in the corresponding field and devices is enhanced, and the quality of the corresponding devices is improved.
In yet another aspect of an embodiment of the present invention, a circuit board connector is provided. The circuit board connector comprises a circuit board connector body, wherein a waterproof insulating film layer is formed on at least a conductor joint area of the circuit board connector body, and the waterproof insulating film layer is formed by forming a film by the waterproof insulating paint. Thus, at least the conductor tab area of the circuit board connector is covered and protected by the waterproof insulating film layer. When the male and female heads of the circuit board connector are buckled, the film layer covering the pins is pierced and extruded, so that the male and female pins of the circuit board connector are contacted and conducted, the film layer at the non-pin position is extruded and still attached to the periphery of the pins to realize wrapping and protection, thereby realizing good waterproof and insulating protection effects on the circuit board connector, improving stable connection of the circuit board connector and prolonging the service life of the circuit board connector. In addition, the film layer formed by the waterproof insulating coating has good film layer extrusion calendaring characteristics, so that the thickness control requirement of the waterproof insulating film layer can be obviously reduced, the stable buckling of the male and female heads of the circuit board connector can be realized, the production process condition and control of the waterproof insulating film layer can be obviously reduced, the production efficiency of the circuit board connector is improved, and the cost is reduced.
Alternatively, the thickness of the waterproof insulating film layer contained in the circuit board connector is not less than 10 μm. Because the waterproof insulating film layer has good film extrusion calendaring characteristics, only the minimum thickness requirement of the waterproof insulating film layer is required to be controlled, and the thickness precision requirement of the waterproof insulating film layer can be obviously reduced.
In yet another aspect of the embodiments of the present invention, a circuit board is provided. The circuit board comprises a circuit board connector, wherein the circuit board connector is the circuit board connector. Therefore, the male and female heads of the circuit board connector contained in the circuit board are buckled and conducted stably, the circuit board connector has good waterproof effect, and the service life of the circuit board connector can be effectively prolonged, so that the circuit board provided by the embodiment of the invention has stable working performance and long service life.
In yet another aspect of the embodiment of the present invention, an electronic product is provided. The electronic product comprises a circuit board, wherein the circuit board is the circuit board.
Further, the electronic product comprises a mobile phone, a tablet, a PC, a watch, a bracelet and an earphone.
In yet another aspect of the embodiment of the present invention, a home appliance is provided. The household appliance comprises a circuit board, wherein the circuit board is the circuit board.
In still another aspect, an embodiment of the present invention provides an automobile, where the automobile includes a circuit board, and the circuit board is the circuit board of the embodiment of the present invention.
The electronic product, the household electrical appliance and the automobile all comprise the circuit board. Therefore, the electronic product, the household electrical appliance and the electric module contained in the automobile have stable working performance and long service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a foam/rubber ring with a frame shape attached around a female head of a conventional BTB connector, and a structure of the male head and the female head of the BTB connector after being buckled;
fig. 2 is a schematic diagram of a structure of one embodiment of a circuit board connector body and a structure of a female and a male after film formation of the circuit board connector body according to the embodiment of the present invention; wherein, fig. 2 a is a diagram illustrating a structure of an embodiment of a female connector body of a circuit board; fig. 2 b is a schematic structural view of a female and male connector of the circuit board connector body including the circuit board connector body shown in fig. 2 a;
Fig. 3 is a schematic diagram of a process of forming a waterproof insulating film layer and a principle of fastening a male connector and a female connector of a circuit board connector according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of forming a waterproof insulating film layer on a circuit board connector body by using the paste waterproof insulating paint according to the embodiment of the invention;
fig. 5 is a schematic flow chart of forming a waterproof insulating film layer on a circuit board connector body by using the liquid waterproof insulating paint according to the embodiment of the invention.
Reference numerals in the drawings of the embodiments of the present application are as follows:
1-a circuit board connector body, 11-a female head and 12-a male head of the circuit board connector body;
2-foam/rubber ring; 3- (BTB male) reinforced steel plate; 4-a PCB board; 5-waterproof insulating film layer.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In the description of the present application, it should be understood that, the term "and/or" describes an association relationship of an associated object, which means that there may be three relationships, for example, a and/or B, which may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
In the embodiment of the present application, the term "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the sequence of execution is sequential, and some or all of the steps may be executed in parallel or sequentially, where the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The weights of the relevant components mentioned in the embodiments of the present application may refer not only to specific contents of the components, but also to the proportional relationship between the weights of the components, and thus, any ratio of the contents of the relevant components according to the embodiments of the present application may be enlarged or reduced within the scope disclosed in the embodiments of the present application. Specifically, the mass described in the specification of the examples of the present application may be a mass unit known in the chemical industry such as μ g, mg, g, kg.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated for distinguishing between objects such as substances from each other. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
Explanation of related names follows:
PCB: english is Printed Circuit Board, chinese is printed circuit board.
BTB: english is Board to Board, chinese is Board to Board, and in the embodiment of the invention, the English is a kind of connector, specifically, a Board to Board connector.
BTB connector: one type of connector, specifically a board-to-board connector, is also a BTB (Board to Board) connector.
SIR: english is Surface Insulation Resistance, chinese is insulation resistance.
In one aspect, the embodiment of the invention provides a waterproof insulating paint. The waterproof insulating coating provided by the embodiment of the invention comprises at least one waterproof insulating film-forming component from the following I to III:
i: an organolinear siloxane compound having the following structural formula a:
Figure BDA0003108592150000051
wherein R in structural formula A 1 To R 8 Independently a hydrogen atom, a halogen atom, a methoxy group, an ethoxy group, and C 1 -C 3 Alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 15 Any one of aryl groups, m is an integer of 10-100; in an embodiment, the halogen atom may be any of F, CL, br, I, C 1 -C 3 Alkyl groups include methyl, ethyl, propyl, isopropyl, and the like, C 3 -C 10 Cycloalkyl groups can be, but are not limited to, tricycloalkyl, tetracycloalkyl, pentacycloalkyl, etc., C 6 -C 15 The aryl group may be an aryl group including one phenol group, two phenol groups. In a specific embodiment, the organic linear siloxane compound may specifically be at least one of polydiphenyl dimethyl linear siloxane, polydimethoxy linear siloxane, polymethyl ethoxy linear siloxane, polymethyl trifluoropropyl linear siloxane, and polymethyl chlorobenzene linear siloxane.
II: n-alkane or isoparaffin shown in the following structural formula B;
C n H 2n+n B。
wherein n in the structural formula B is an integer of 8-15; in the embodiment, the n-alkane can be at least one of n-octane (C8), n-decane (C10), n-undecane (C11), laurane (C12) and n-tetradecane (C14); the isoparaffin can be at least one of isododecane, isodecane and isotetradecane.
III: a fluoroaliphatic polymer having the following structural formula C:
C x F y H z N j O k C。
wherein x in the structural formula C is an integer of 8-20, y is an integer of 6-42, z is an integer of 0-9, j is 0 or 1, and k is 0 or 1; in the embodiment, the fluorine-containing aliphatic polymer may specifically be at least one of bis-heptafluoropropyl ketone, methyl nonafluorobutyl ether, pentafluoroethyl heptafluoropropyl ketone, and heptafluorocyclopentane.
At least one of the waterproof and insulating film-forming components I to III has good hydrophobicity, insulativity, cone penetration and calendaring deformation, and also has good film-forming property. Therefore, the waterproof insulating paint provided by the embodiment of the invention can be effectively formed into a film on a connector, and endows the film with good insulativity and waterproof performance, so that devices containing the waterproof insulating paint film, such as the connector, are endowed with good waterproof effect, and the insulativity of the waterproof insulating paint provided by the embodiment of the invention can not influence and cause short circuit of pins among pins of the connector, so that the stability of the performance of the corresponding devices is improved, and the service life of the corresponding devices is prolonged. Meanwhile, the waterproof insulating paint is endowed with a pasty or fat-shaped film layer, and the film layer is endowed with good puncture easiness such as proper cone penetration property, and can be effectively punctured by a fixed point under the action of external force so as to realize buckling conduction connection of the male and female heads of the connector. In addition, the waterproof insulating paint has excellent extrusion, calendaring and deformation characteristics, reduces the severe requirement on the thickness of a coating formed by the waterproof insulating paint, and can directly extrude and regulate the thickness of the film to realize excellent waterproof and insulating effects.
Based on at least any one of the waterproof insulating film-forming components I to III contained in the waterproof insulating paint. Therefore, the waterproof insulating paint at least includes the following embodiments:
in a first embodiment, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components I and II, and the mass ratio of the two waterproof insulating film-forming components I and II is 3 (0.8-1.2).
In a second embodiment, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components I and III, and the mass ratio of the two waterproof insulating film-forming components I and III is 3 (1.5-2.5).
In a third embodiment, the waterproof insulating coating comprises a mixture of two waterproof insulating film-forming components II and III, and the mass ratio of the two waterproof insulating film-forming components II and III is 1 (1.3-2.8).
In a fourth embodiment, the waterproof insulating coating comprises a mixture of three waterproof insulating film-forming components I, II and III, wherein the mass ratio of the three waterproof insulating film-forming components I, II and III is 3 (0.8-1.2): 1.5-2.5.
Of course, the waterproof insulating coating also includes embodiments containing only any one of the waterproof insulating film-forming components I to III.
By controlling and adjusting the types of the waterproof insulating film forming components, the waterproof effect of the waterproof insulating paint is effectively improved on the basis of endowing the waterproof insulating paint with insulating performance, the penetration property, the film forming property and the deformation property of the waterproof insulating paint are improved, and the applicability of the waterproof insulating paint is improved, such as the applicability in the connector field.
Based on the above embodiments, in the embodiments, the waterproof insulating coating further includes at least one of a tackifier and a volatile solvent. By adding the tackifier and the volatile solvent in the waterproof insulating paint, the uniformity of the dispersion of the components contained in the waterproof insulating paint is improved, the film forming quality of the waterproof insulating paint is improved, and the diversity of film forming methods of the waterproof insulating paint is improved.
In an embodiment, the viscosity modifier comprises at least one of titanium dioxide, silicon dioxide, talc, calcium carbonate. The viscosity adjusting agents can effectively adjust the viscosity of the waterproof insulating paint, and improve the dispersion uniformity of each component of the waterproof insulating paint before and during the use process, so that the film forming quality of the waterproof insulating paint is improved. Meanwhile, the adhesion promoters can also play a synergistic effect of insulating and other performances with the waterproof insulating film-forming component, so that the insulating effect of the waterproof insulating film-forming component is improved, and the characteristics of penetration, extrusion deformation and the like of the waterproof insulating coating are not affected.
In other embodiments, the volatile solvent comprises at least one of a perfluorinated solvent, an ester-based solvent, and an ether-based solvent. Specifically, the perfluorinated solvent comprises at least one of methyl perfluorobutyl ether, methyl perfluoroisobutyl ether, ethyl perfluorobutyl ether and ethyl perfluoroisobutyl ether; the ester solvent comprises at least one of ethyl acetate and methyl acetate; the ether solvent comprises at least one of diethyl ether and petroleum ether. The solvents have good volatility, so that the waterproof insulating coating can be naturally volatilized after being formed into a film, and the fixing speed of the film layer can be improved. Meanwhile, the waterproof insulating film-forming component has good solubility, and the existence of the volatile solvent can play a role of a solvent carrier, so that the waterproof insulating film-forming component can form a uniformly dispersed solution, and the uniformity and quality of a film layer are further improved. But also gives the waterproof insulating paint the film-forming selectivity in various modes.
In addition, through the selection of the types of the adhesion regulator and the volatile solvent, the functions of the adhesion regulator and the volatile solvent in the waterproof insulating paint are improved, the solubility of solutes of the waterproof insulating paint such as waterproof insulating film-forming components is improved, the viscosity of the waterproof insulating paint is improved, the dispersion stability of each component of the waterproof insulating paint is improved, and the waterproof insulating paint is improved on the basis of improving the film-forming quality of the waterproof insulating paint, such as fixed-point puncture, film extrusion rolling characteristics and waterproof insulating performance.
The waterproof insulating paint comprises at least one of a tackifier and a volatile solvent, and at least the following examples:
in a fifth embodiment, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component and the adhesion regulator, and the mass ratio of the waterproof insulating film-forming component to the adhesion regulator is 1 (1-2).
In a sixth embodiment, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component and the volatile solvent, and the mass ratio of the waterproof insulating film-forming component to the volatile solvent is 1 (5-20).
In a seventh embodiment, the waterproof insulating coating comprises a mixture of the waterproof insulating film-forming component, the volatile solvent and the adhesion promoter, and the mass ratio of the waterproof insulating film-forming component, the volatile solvent and the adhesion promoter is 1 (5-20): 1-2.
The stability of the waterproof insulating paint is improved, the film forming quality of the waterproof insulating paint is improved, and the fixed-point puncture, film extrusion calendaring property and waterproof insulating property of the waterproof insulating paint are further improved by controlling and adjusting the content proportion of each component of the waterproof insulating paint.
Based on the components contained in the waterproof insulating coating and the further adjustment of the content of each component, the waterproof insulating coating is endowed with excellent waterproof effect, fixed point puncture property, film forming property and deformation property. Waterproof insulation, as detectedThe cone penetration of the film layer formed by the coating is 200-350, and the resistance of the film layer formed by the waterproof insulating coating is more than 10 8 Omega, the surface water contact angle of the film layer formed by the waterproof insulating paint is more than 100 degrees, and the leakage current of the film layer formed by the waterproof insulating paint is less than 0.01mA.
In addition, the preparation method of the waterproof insulating paint of each embodiment can be prepared according to the components and the content of the waterproof insulating paint, and the components are uniformly mixed.
On the other hand, the waterproof insulating paint based on the embodiment of the invention has the advantages of good stability and film forming property, and the film layer has excellent waterproof property, insulating property, cone penetration degree and film layer extrusion calendaring property, so the embodiment of the invention also provides an application method of the waterproof insulating paint, and the waterproof insulating paint is applied to circuit board connectors, electronic products, household electrical appliances and automobiles. The application effectively expands the application field of the waterproof insulating paint provided by the embodiment of the invention, and enhances the application effect in the corresponding field and devices.
In yet another aspect, an embodiment of the present invention provides a circuit board connector. The circuit board connector comprises a circuit board connector body, wherein a waterproof insulating film layer is formed on at least a conductor joint area of the circuit board connector body, and the waterproof insulating film layer is formed by forming a film by the waterproof insulating paint. In the embodiment, the structure of the circuit board connector according to the embodiment of the present invention is shown in fig. 2, 4 and 5, which includes a circuit board connector body 1, a waterproof insulating film layer 5 is formed on at least a conductor joint area of the circuit board connector body 1, that is, a female terminal 11, and the waterproof insulating film layer 5 is formed by forming a film of the waterproof insulating paint according to the embodiment of the present invention. The female head 11 of the circuit board connector body 1 may be as shown in fig. 2 a, 4 and 5, but the circuit board connector body 1 may have other structures. Like this, when female head 11 and the public head 12 of circuit board connector body 1 pass through reinforcing steel plate 3 knot, pierce through and extrude the waterproof insulating film layer 5 that covers pin department, realize the female head 11 of circuit board connector and the pin contact conduction of public head 12, waterproof insulating film layer 5 of non-pin department is extruded and still is adhered to around the pin and realize parcel and protection, as shown in the b diagram in fig. 2, thereby realize good waterproof and insulating guard action to circuit board connector, improve circuit board connector's stable connection, increase of service life. In addition, the waterproof insulating film layer 5 formed by the waterproof insulating coating has good film extrusion and calendaring characteristics, so that the thickness control requirement of the waterproof insulating film layer 5 can be obviously reduced, stable buckling of the female head 11 and the male head 12 of the circuit board connector body 1 can be realized, the production process condition and control of the waterproof insulating film layer 5 can be obviously reduced, the production efficiency of the circuit board connector is improved, and the cost is reduced. Of course, the circuit board connector according to the embodiment of the present invention is generally mounted on the PCB board, and as shown in fig. 2, 4 and 5, is mounted on the PCB board 4.
Because the waterproof insulating film 5 has good film extrusion calendaring characteristics, only the minimum thickness requirement of the waterproof insulating film 5 is required to be controlled, and the thickness precision requirement of the waterproof insulating film 5 can be obviously reduced. In the embodiment, the thickness of the waterproof insulating film layer 5 contained in the circuit board connector is not less than 10 μm. Because the waterproof insulating film 5 has good film layer ductility, the minimum insulation and waterproof thickness is only required to be controlled, and any thickness larger than the thickness meets the film layer requirement.
In addition, the flow of forming the waterproof insulating film layer 5 and the principle of fastening the female head 11 and the male head 12 of the circuit board connector body 1 in the circuit board connector according to the embodiment of the present invention are shown in fig. 3. After the female head 11 and the male head 12 are buckled, the connector pins of the circuit board connector body 11 are extruded and penetrate through the waterproof insulating film layers 5 at the pins to realize conductive connection, the waterproof insulating film layers 5 in other areas of the pins can be enclosed around the pins to play a role in waterproof and insulating, so that the circuit board connector is protected in waterproof and insulating mode, and the working stability and the service life of the circuit board connector are remarkably improved.
Based on the waterproof insulating paint, the waterproof insulating film layer 5 included in the circuit board connector according to the embodiment of the present invention may be formed according to a paint forming method, for example, when the waterproof insulating paint is pasty, for example, when the waterproof insulating paint does not contain a volatile solvent, as shown in fig. 4, the pasty waterproof insulating paint may be directly formed on the circuit board connector body 1, for example, any form of film forming by knife coating, spraying film forming, rolling film forming, etc., that is, the waterproof insulating film layer 5 is formed, so as to form the circuit board connector. When the female head 11 and the male head 12 of the circuit board connector body 1 are buckled, the connection is conducted and the waterproof effect is realized.
When the waterproof insulating coating is in a liquid state, for example, when the waterproof insulating coating contains a volatile solvent, the liquid waterproof insulating coating can be directly formed into a film on the circuit board connector body 1, in a specific embodiment, as shown in fig. 5, the liquid waterproof insulating coating is dripped on the surface of the circuit board connector body 11 to form liquid drops 6, the liquid drops 6 are spread to form a film, a waterproof insulating film layer 5 is formed, and the liquid drops 6 are spread to form the circuit board connector after the volatile solvent is volatilized along with the volatilization of the volatile solvent in the film forming process. When the female head 11 and the male head 12 of the circuit board connector body 1 are buckled, the connection is conducted and the waterproof effect is realized. Of course, the waterproof insulating film layer 5 may be formed by spraying or the like.
Of course, the paste waterproof insulating paint may be liquefied to form a liquid, and then the liquid waterproof insulating paint is formed on the circuit board connector body 1, for example, the paste is heated and liquefied and then spread on the surface of the circuit board connector body 1, and condensed at room temperature to form a film, that is, the waterproof insulating film layer 5 is formed.
The paste-like waterproof insulating paint may be gasified to form a gas state, and then the gas-state waterproof insulating paint may be formed into a film on the circuit board connector body 1, for example, by vapor deposition on the circuit board connector body 1.
In yet another aspect, based on the above-mentioned circuit board connector, the embodiment of the present invention further provides a circuit board. The circuit board of the embodiment of the invention comprises a circuit board connector, and the circuit board connector is the circuit board connector of the embodiment of the invention. Therefore, the male and female heads of the circuit board connector contained in the circuit board are buckled and conducted stably, the circuit board connector has good waterproof effect, and the service life of the circuit board connector can be effectively prolonged, so that the circuit board provided by the embodiment of the invention has stable working performance and long service life. The circuit board can be a single board or a multi-layer board.
On the other hand, based on the circuit board, the embodiment of the invention also provides any device or product containing the circuit board, such as an electronic product, a household electrical appliance product, an automobile and the like. The circuit board contained in any device or product of the electronic products, household appliances, automobiles and the like is the circuit board of the embodiment of the invention.
In an embodiment, the electronic product includes a mobile phone, a tablet, a PC, a watch, a bracelet, and an earphone. Of course, other electronic products including the circuit board according to the above embodiment of the present invention may also be used.
In embodiments, the home appliances include large home appliances, consumer electronics, kitchen and bathroom appliances, environmental and health appliances, smart appliances, and the like.
In an embodiment, the automobile includes a conventional energy automobile, an electric car, a new energy automobile, and the like.
Because the electronic product, the household electrical appliance and the automobile all comprise the circuit board of the embodiment of the invention, the electronic product, the household electrical appliance and the electric module of the automobile have stable working performance and long service life.
The waterproof insulating paint and its application will be described in detail with reference to specific examples.
1. Waterproof insulating paint examples
Example A1
The embodiment provides a waterproof insulating paint. The waterproof insulating paint contains an organic linear siloxane compound of polydiphenyl dimethyl linear siloxane.
Example A2
The embodiment provides a waterproof insulating paint. The waterproof insulating paint contains alkane of laurane (C12).
Example A3
The embodiment provides a waterproof insulating paint. The waterproof insulating paint contains fluorine-containing aliphatic polymer of methyl nonafluorobutyl ether.
Example A4
The embodiment provides a waterproof insulating paint. The waterproof insulating paint contains a mixture of an organic linear siloxane compound of polydiphenyl dimethyl linear siloxane and alkane of laurane (C12), and the mass ratio of the organic linear siloxane compound to the alkane is 3:1.
Example A5
The embodiment provides a waterproof insulating paint. The waterproof insulating paint contains a mixture of an organic linear siloxane compound of polydiphenyl dimethyl linear siloxane and a fluorine-containing aliphatic polymer of methyl nonafluorobutyl ether, and the mass ratio of the organic linear siloxane compound to the fluorine-containing aliphatic polymer is 3:2.
example A6
The embodiment provides a waterproof insulating paint. The mixture of the alkane of the laurane (C12) and the fluorine-containing aliphatic polymer of the methyl nonafluorobutyl ether has the mass ratio of the alkane to the fluorine-containing aliphatic polymer of 1:2.
example A7
The embodiment provides a waterproof insulating paint. The mixture of the organic linear siloxane compound of the polydiphenyl dimethyl linear siloxane, the alkane of the laurane (C12) and the fluorine-containing aliphatic polymer of the methyl nonafluorobutyl ether has the mass ratio of 3:1:2.
example A8
The embodiment provides a waterproof insulating paint. The mixture of the organic linear siloxane compound of polydiphenyl dimethyl linear siloxane, the fluorine-containing aliphatic polymer of alkane of laurane (C12) and methyl nonafluorobutyl ether and the petroleum ether volatile solvent, wherein the mass ratio of the organic linear siloxane compound to the alkane to the fluorine-containing aliphatic polymer to the volatile solvent is 3:1:2:60.
Example A9
The embodiment provides a waterproof insulating paint. The polydiphenyl dimethyl linear siloxane comprises a mixture of an organic linear siloxane compound, a fluorine-containing aliphatic polymer of laurane (C12) alkane and methyl nonafluorobutyl ether, an ethyl acetate volatile solvent and talcum powder, wherein the mass ratio of the organic linear siloxane compound to the alkane to the fluorine-containing aliphatic polymer to the volatile solvent to the talcum powder is 3:1:2:60:9.
Example A10
The embodiment provides a waterproof insulating paint. The polydimethoxy linear siloxane comprises a mixture of an organic linear siloxane compound, an alkane of n-decane, a fluorine-containing aliphatic polymer of bis-heptafluoropropyl ketone, an ethyl acetate volatile solvent and talcum powder, wherein the mass ratio of the organic linear siloxane compound to the alkane to the fluorine-containing aliphatic polymer to the volatile solvent to the talcum powder is 3:1.2:1.5:60:9.
Example A11
The embodiment provides a waterproof insulating paint. The polymethyl chlorobenzene base linear siloxane comprises a mixture of an organic linear siloxane compound, an alkane of isodecane, a fluorine-containing aliphatic polymer of heptafluorocyclopentane, an ethyl acetate volatile solvent and talcum powder, wherein the mass ratio of the organic linear siloxane compound to the alkane to the fluorine-containing aliphatic polymer to the volatile solvent to the talcum powder is 3:0.8:2.5:60:9.
2. Circuit board and circuit board connector embodiment
Examples B1 to B11
The waterproof insulating coatings provided in the above examples A1 to a11 were applied to the connectors included in the circuit boards, respectively, to form waterproof insulating film layers on the connectors, respectively, to obtain the circuit board connectors and the circuit boards, respectively.
Comparative example 21
Provided is a circuit board connector which does not contain a waterproof insulating film layer as compared with embodiment B1.
3. Circuit board connector and related performance test of waterproof paint
After the male and female terminals of the circuit board connectors of examples B1 to B11 and the circuit board connector of comparative example 21 were respectively engaged, the puncture properties, insulation properties, and conductivity of the circuit board connectors were respectively tested.
3.1 puncture test:
the resistance of each circuit board connector is tested after the circuit board connectors in comparative example 21 and the circuit board connectors in examples B1 to B11 are respectively buckled, and the test shows that the contact resistance of each circuit board connector in each example has no obvious difference relative to the contact resistance of the circuit board connector in comparative example 21 without the waterproof insulating film layer, which indicates that the waterproof insulating film layer has good penetrability and does not influence the buckling and the conduction of the circuit board connector after coating.
3.2 insulation test:
the waterproof insulating paint of examples A1 to A11 was applied on an insulation resistance (Surface Insulation Resistance, SIR) test plate to form a waterproof insulating film layer, then a 50V bias was applied, and the waterproof insulating film layer was placed in a double 85 environment (temperature 85 ℃ C., humidity 85% RH) to test the resistance every 0.5h at a test voltage of 100V for 1 week (168 h), and the resistance of each waterproof insulating film layer was greater than 10 in the whole process 8 The resistance of each waterproof insulating film layer is also more than 10 after omega and 1 week 8 Omega, and the connector body in each embodiment is non-corrosive, which means that the waterproof insulating film layer in each embodiment has good and stable insulating properties, and the coating on the connector does not cause short circuit or corrosion of the contact pins of the connector.
3.3 hydrophobicity and Water repellency testing:
after the waterproof insulating film layers of the circuit board connectors of the embodiments B1 to B11 are formed, the water contact angles of the surfaces of the waterproof insulating film layers are tested to be larger than 100 degrees by using a water drop angle testing instrument, so that the waterproof insulating film layers have good hydrophobic effects;
the waterproof insulating paint of the embodiment A1 to the embodiment A11 is coated on an insulating impedance (SIR) test board to form a waterproof insulating film layer, then 10uL of tap water is dripped on the surface of each waterproof insulating film layer, the test is carried out by applying 5V voltage, each connector body is observed to be free of corrosion within 24 hours, the current indication is 0 (timely supplement is carried out after the dripped tap water volatilizes in the test process), the blank insulating impedance (SIR) without the waterproof paint is corroded within 5 minutes, and 2.76mA of current is generated until the dripped tap water completely corrodes on the insulating impedance (SIR) test board, and the generated leakage current is more than 5mA. The waterproof insulating film layers have good waterproof effect, water cannot permeate the waterproof insulating film layers to cause short circuit and corrosion, and water cannot permeate materials to cause short circuit of the connector when the connector is electrified after the waterproof insulating film layers are coated on the surface of the connector.
The relevant performance data obtained by selecting the above example A9, example B9 and comparative example 21 as samples to test the circuit board connectors according to the above 3.1 to 3.3 test methods are shown in the following table 1, wherein the test data of comparative example 21 are not coated in table 1:
TABLE 1
Figure BDA0003108592150000111
The relevant performance data obtained by selecting the above example a10, example B10 and comparative example 21 as samples to test the circuit board connectors according to the above 3.1 to 3.3 test methods are shown in the following table 2, wherein the test data of comparative example 21 are not coated in table 2:
TABLE 2
Figure BDA0003108592150000112
The relevant performance data obtained by selecting the above example a11, example B11 and comparative example 21 as samples to test the circuit board connectors according to the above 3.1 to 3.3 test methods are shown in the following table 3, wherein the test data of comparative example 21 are not coated in table 3:
TABLE 3 Table 3
Figure BDA0003108592150000121
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims (13)

1. The application of the waterproof insulating paint in electronic products is characterized in that:
i: an organolinear siloxane compound having the following structural formula a:
Figure QLYQS_1
Structural formula A;
wherein R in structural formula A 1 To R 8 Independently a hydrogen atom, a halogen atom, a methoxy group, an ethoxy group, and C 1 -C 3 Alkyl, C 3 -C 10 Cycloalkyl, C 6 -C 15 Any one of aryl groups, m is an integer of 10-100;
II: n-alkane or isoparaffin shown in the following structural formula B; wherein n in the structural formula B is an integer of 8-15;
C n H 2n+n structural formula B;
III: a fluorine-containing aliphatic polymer represented by the following structural formula C, wherein x in the structural formula C is an integer of 8 to 20, y is an integer of 6 to 42, z is an integer of 0 to 9, j is 0 or 1, and k is 0;
CxFyHzNjOk structural formula C;
the waterproof insulating coating is a mixture of a waterproof insulating film-forming component and a viscosity modifier, and the mass ratio of the waterproof insulating film-forming component to the viscosity modifier is 1 (1-2); or (b)
The waterproof insulating coating is a mixture of a waterproof insulating film-forming component, a volatile solvent and a viscosity modifier, and the mass ratio of the waterproof insulating film-forming component to the volatile solvent to the viscosity modifier is 1 (5-20) (1-2);
wherein the waterproof insulating film-forming component consists of I and III with the mass ratio of (1.5-2.5); or (b)
The waterproof insulating film-forming component consists of I, II and III with the mass ratio of (0.8-1.2) to (1.5-2.5);
The penetration degree of the film layer formed by the waterproof insulating paint is 200-350;
the electronic product comprises a mobile phone, a tablet Personal Computer (PC), a watch, a bracelet and an earphone.
2. Use of the waterproof insulating paint according to claim 1 in electronic products, characterized in that: the organic linear siloxane compound comprises at least one of polydiphenyl dimethyl linear siloxane, polydimethoxy linear siloxane, polymethyl ethoxy linear siloxane, polymethyl trifluoro propyl linear siloxane and polymethyl chlorobenzene linear siloxane;
the n-alkane comprises at least one of n-octane, n-decane, n-undecane, laurane and n-tetradecane;
the isoparaffin comprises at least one of isododecane, isodecane and isotetradecane;
the fluorine-containing aliphatic polymer is heptafluorocyclopentane.
3. Use of the waterproof insulating paint according to claim 1 in electronic products, characterized in that: the viscosity modifier comprises at least one of titanium dioxide, silicon dioxide, talcum powder and calcium carbonate;
the volatile solvent comprises at least one of perfluorinated solvents, ester solvents and ether solvents.
4. Use of the waterproof insulating paint according to claim 3 in electronic products, characterized in that: the perfluorinated solvent comprises at least one of methyl perfluorobutyl ether, methyl perfluoroisobutyl ether, ethyl perfluorobutyl ether and ethyl perfluoroisobutyl ether;
The ester solvent comprises at least one of ethyl acetate and methyl acetate;
the ether solvent comprises at least one of diethyl ether and petroleum ether.
5. Use of the waterproof insulating paint according to claim 1, 3 or 4 in electronic products, characterized in that: the surface resistance of the film layer formed by the waterproof insulating paint is more than 10 8 Omega; and/or
The surface water contact angle of the film layer formed by the waterproof insulating paint is more than 100 degrees; and/or
The leakage current of the film layer formed by the waterproof insulating paint is less than 0.01mA.
6. Use of the waterproof insulating paint according to any one of claims 1 to 5 in circuit board connectors, household electrical appliances, automobiles.
7. A circuit board connector, characterized in that: comprising a circuit board connector body, on at least a conductor joint region of which a waterproof insulating film layer is formed by the waterproof insulating paint film of any one of claims 1 to 5.
8. The circuit board connector of claim 7, wherein: the thickness of the waterproof insulating film layer is not less than 10 mu m.
9. A circuit board, characterized in that: comprising a circuit board connector according to any one of claims 7-8.
10. An electronic product, includes circuit board, its characterized in that: the circuit board is the circuit board of claim 9.
11. The electronic product of claim 10, wherein: the electronic product comprises a mobile phone, a tablet Personal Computer (PC), a watch, a bracelet and an earphone.
12. A home appliance comprising a circuit board, characterized in that: the circuit board is the circuit board of claim 9.
13. An automobile, includes circuit board, its characterized in that: the circuit board is the circuit board of claim 9.
CN202110644523.XA 2021-06-09 2021-06-09 Waterproof insulating paint and application thereof Active CN115449291B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110644523.XA CN115449291B (en) 2021-06-09 2021-06-09 Waterproof insulating paint and application thereof
PCT/CN2022/090016 WO2022257641A1 (en) 2021-06-09 2022-04-28 Waterproof insulating coating and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110644523.XA CN115449291B (en) 2021-06-09 2021-06-09 Waterproof insulating paint and application thereof

Publications (2)

Publication Number Publication Date
CN115449291A CN115449291A (en) 2022-12-09
CN115449291B true CN115449291B (en) 2023-07-07

Family

ID=84294994

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110644523.XA Active CN115449291B (en) 2021-06-09 2021-06-09 Waterproof insulating paint and application thereof

Country Status (2)

Country Link
CN (1) CN115449291B (en)
WO (1) WO2022257641A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2615799B2 (en) * 1988-01-20 1997-06-04 日本合成ゴム株式会社 Method for producing urethane polysiloxane
KR20050024721A (en) * 2003-09-01 2005-03-11 삼성전자주식회사 Novel Siloxane Polymer and a Composition for preparing Dielectric Film by using the Same
CN101225234B (en) * 2008-02-01 2010-08-11 南京凯汇工业科技有限公司 Heat conductive insulating material and preparation method thereof
JP6625987B2 (en) * 2013-09-16 2019-12-25 ハネウェル・インターナショナル・インコーポレーテッドＨｏｎｅｙｗｅｌｌ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｉｎｃ． Polyfluorinated siloxane coating
CN104845521B (en) * 2015-06-15 2017-06-13 张家港康得新光电材料有限公司 UV is coating material solidified, wear-resisting nonpolluting coating and the safeguard film for cellular phone containing wear-resisting nonpolluting coating
CN105623503B (en) * 2016-03-23 2018-04-10 华北电力大学 A kind of silicon rubber hydrophobic coating for insulator and preparation method thereof
CN109096915B (en) * 2018-06-26 2021-04-20 广东美的厨房电器制造有限公司 Coating composition and coating material and coating layer and silicon oxide coating layer and article having the coating layer and method for forming coating layer on substrate surface
CN108864936A (en) * 2018-07-26 2018-11-23 合肥广民建材有限公司 A kind of external wall waterproof insulation coating and preparation method thereof
CN113597822A (en) * 2019-03-22 2021-11-02 汉高股份有限及两合公司 Coating for waterproofing electronic components

Also Published As

Publication number Publication date
CN115449291A (en) 2022-12-09
WO2022257641A1 (en) 2022-12-15

Similar Documents

Publication Publication Date Title
CN100514760C (en) Connector contact material
CA2842651C (en) Anti-fingerprint coating composition and film using the same
WO2011118315A1 (en) Electroconductive crosslinked product, process for producing same, and transducer, flexible wiring board and electromagnetic-wave shield made by using same
JP6395892B2 (en) Device coating method and device having nano-coating layer
CN102687210A (en) Conductive elastomer and production method thereof
JP2010043228A (en) Electrically-conductive ink
KR101766629B1 (en) Conductive liquid composition
CN115449291B (en) Waterproof insulating paint and application thereof
CN101918480B (en) Fluororesin-coated polymer film for reinforcing polymer electrolyte membrane, reinforced polymer electrolyte membrane, and membrane electrode assembly
CN103975094A (en) Composition for production of contact, contact using same and process for production of contact
CN105189823A (en) Electronic component
JP2009209346A (en) Electrically-conductive ink
CN106189524A (en) A kind of electrically conductive ink
WO2016175129A1 (en) Silicone adhesive composition and adhesive tape
JP2016204596A (en) Silicone adhesive composition and adhesive tape
CN102559000B (en) Paste composition and wired circuit board
JP6911745B2 (en) Conductive adhesives, adhesive connectors, and adhesive terminal members
WO2016196953A1 (en) Process for protecting an electronic device with a hydrophobic coating
US9461312B2 (en) Electrode for fuel cell, manufacturing method of electrode for fuel cell, polymer electrolyte fuel cell and catalyst ink
EP3456788A1 (en) Coating composition comprising nano-sol, and preparation method thereof
US8696859B2 (en) Bonding of silicone gaskets and systems containing bonded silicone gaskets
JP4790238B2 (en) Conductive elastic body composition
JP3167456B2 (en) Composite plating method by electroless gold plating
CN104046285B (en) Film, flexible base plate, flexible circuit board and making method
KR20040021299A (en) EMI Shielding conductive rubber and the method for making it

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant