CN112920647B - Waterproof and anti-oxidation coating for electronic device and preparation method thereof - Google Patents
Waterproof and anti-oxidation coating for electronic device and preparation method thereof Download PDFInfo
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- CN112920647B CN112920647B CN202110367365.8A CN202110367365A CN112920647B CN 112920647 B CN112920647 B CN 112920647B CN 202110367365 A CN202110367365 A CN 202110367365A CN 112920647 B CN112920647 B CN 112920647B
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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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C09D123/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a waterproof and anti-oxidation coating for an electronic device, which comprises the following raw materials in parts by mass: 45-50 parts of an ethylene-propylene copolymer; 5-10 parts of rosin resin; 30-40 parts of epoxy resin; 3-5 parts of a coupling agent; 3-5 parts of a dispersing agent; 10-15 parts of zinc powder. The zinc powder, the ethylene-propylene copolymer, the rosin resin and the epoxy resin are ground into smaller-particle-size zinc powder, the ethylene-propylene copolymer, the rosin resin and the epoxy resin are mixed according to the proportion, the mixture is heated to a molten state, the coupling agent and the dispersing agent are added, the mixture is stirred at the temperature of 150-180 ℃ for 0.5-1h to obtain a sizing material, the zinc powder and the sizing material are uniformly mixed to form a finished product, the finished product is formed into a film and is wrapped on an electronic device, and in the process of permeating the film, the zinc serving as an active metal and the humid air undergo a chemical reaction to generate basic zinc carbonate and consume a certain amount of oxygen and water, so that the water vapor permeability and the oxygen permeability are reduced, the electronic device is further prevented from being oxidized, and better protection is provided for the electronic device.
Description
Technical Field
The invention relates to the technical field of waterproof and anti-oxidation coatings, in particular to a waterproof and anti-oxidation coating for an electronic device and a preparation method thereof.
Background
Electronic devices are important components of electronic equipment or electromechanical equipment, and the electronic devices are various in types, relatively small in size and often distributed in the electronic equipment in a scattered manner. However, the electronic devices are often affected by water and oxygen in the environment during transportation or use, so that the electronic devices are oxidized, and the equipment cannot be normally used.
In order to prevent the electronic devices from being oxidized, enterprises generally protect the electronic devices by wrapping the electronic devices with a layer of paint. Although the mode can play a certain role in preventing oxidation of electronic devices, the water vapor transmission rate and the oxygen transmission rate of the existing coating are high, and most of water and oxygen in the air can still permeate the film to be in contact with the electronic devices, so that the electronic devices are oxidized. Therefore, it is necessary to provide a new solution to better protect the electronic device from oxidation.
Disclosure of Invention
In view of the above, the present invention provides a waterproof and anti-oxidation coating for electronic devices and a preparation method thereof, which can effectively solve the problem of high water vapor transmission rate and high oxygen transmission rate of the existing waterproof and anti-oxidation coating.
In order to achieve the purpose, the invention adopts the following technical scheme:
a waterproof and anti-oxidation coating for electronic devices comprises the following raw materials in parts by mass: 45-50 parts of an ethylene-propylene copolymer; 5-10 parts of rosin resin; 30-40 parts of epoxy resin; 3-5 parts of a coupling agent; 3-5 parts of a dispersing agent; 10-15 parts of zinc powder.
Preferably, the coupling agent is vinyltrimethoxysilane.
Preferably, the epoxy resin is bisphenol F type epoxy resin.
As a preferable scheme, the dispersant is sodium polyacrylate.
A preparation method of a waterproof and anti-oxidation coating for electronic devices comprises the following steps:
(1) zinc powder preparation: crushing the zinc block in an inert gas atmosphere to form zinc powder with the particle size of 8-13 mu m;
(2) melting reaction: mixing ethylene-propylene copolymer, rosin resin and epoxy resin according to the proportion, heating to a molten state, adding a coupling agent and a dispersing agent, and stirring at the temperature of 150-;
(3) mixing zinc powder: and (3) putting the rubber material in the step (2) into inert gas, stirring at 100 ℃, and gradually adding the zinc powder in the step (1) for 1-2 h.
Preferably, the inert gas in step (1) is one or more of helium, argon and nitrogen.
Preferably, the inert gas in step (3) is one or more of helium, argon and nitrogen.
Compared with the prior art, the invention has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:
the zinc blocks are ground into zinc powder with small particle size and evenly mixed with the sizing material obtained in the step (2) to form a finished product in the step (3), the finished product is formed into a film and is wrapped on an electronic device, and in the process that moist air penetrates through the film, zinc serving as active metal and the moist air perform chemical reaction to generate basic zinc carbonate and consume a certain amount of oxygen and water, so that the water vapor transmission rate and the oxygen transmission rate are reduced, the electronic device is further prevented from being oxidized, and better protection is provided for the electronic device.
The present invention will be described in detail with reference to specific embodiments in order to more clearly illustrate the structural features and effects of the present invention.
Detailed Description
The invention discloses a waterproof and anti-oxidation coating for an electronic device, which comprises the following raw materials in parts by mass: 45-50 parts of an ethylene-propylene copolymer; 5-10 parts of rosin resin; 30-40 parts of epoxy resin; 3-5 parts of a coupling agent; 3-5 parts of a dispersing agent; 10-15 parts of zinc powder.
The coupling agent is vinyl trimethoxy silane.
The epoxy resin is bisphenol F type epoxy resin.
The dispersant is sodium polyacrylate.
The invention also discloses a preparation method of the waterproof and anti-oxidation coating for the electronic device, which comprises the following steps:
(1) zinc powder preparation: crushing the zinc block in an inert gas atmosphere to form zinc powder with the particle size of 8-13 mu m; the inert gas is one or more of helium, argon and nitrogen.
(2) Melting reaction: mixing the ethylene-propylene copolymer, the rosin resin and the epoxy resin according to the proportion, heating to a molten state, adding the coupling agent and the dispersing agent, and stirring at the temperature of 150-180 ℃ for 0.5-1h to obtain the rubber material.
(3) Mixing zinc powder: putting the rubber material in the step (2) into inert gas, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 1-2 hours; the inert gas is one or more of helium, argon and nitrogen.
The invention is illustrated in more detail below in the following examples:
example 1
(1) Zinc powder preparation: and (3) crushing the zinc block in a helium atmosphere to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyltrimethoxysilane and sodium polyacrylate, and stirring at 150 ℃ for 0.6h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in helium atmosphere, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 1.2 h; and obtaining a finished product.
Example 2
(1) Zinc powder preparation: and crushing the zinc block in an argon atmosphere to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyltrimethoxysilane and sodium polyacrylate, and stirring at 180 ℃ for 0.8h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in helium atmosphere, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 1 h; and obtaining a finished product.
Example 3
(1) Zinc powder preparation: the zinc block is crushed in the atmosphere of nitrogen to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyltrimethoxysilane and sodium polyacrylate, and stirring at 160 ℃ for 0.5h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in an argon atmosphere, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 2 hours; and obtaining a finished product.
Example 4
(1) Zinc powder preparation: the zinc block is crushed under the atmosphere of argon and nitrogen to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyltrimethoxysilane and sodium polyacrylate, and stirring at 170 ℃ for 1h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in an argon and nitrogen atmosphere, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 1.5 h; and obtaining a finished product.
Example 5
(1) Zinc powder preparation: and (3) crushing the zinc block in an atmosphere of helium and argon to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyl trimethoxy silane and sodium polyacrylate, and stirring at 165 ℃ for 0.8h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in helium and argon atmosphere, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 2 hours; and obtaining a finished product.
Example 6
(1) Zinc powder preparation: and (3) crushing the zinc block under the atmosphere of helium, argon and nitrogen to form zinc powder with the particle size of 8-13 mu m.
(2) Melting reaction: mixing ethylene-propylene copolymer, rosin resin and bisphenol F epoxy resin according to the weight ratio of 45: 8: 30: 4: 4: 13, heating to a molten state, adding vinyltrimethoxysilane and sodium polyacrylate, and stirring at 175 ℃ for 1h to obtain the rubber material.
(3) Mixing zinc powder: placing the rubber material in the step (2) in an atmosphere of helium and nitrogen, stirring at 100 ℃, and gradually adding the zinc powder in the step (1), wherein the stirring time is 1.6 h; and obtaining a finished product.
The finished products obtained in the above examples were subjected to performance tests according to the following test standards:
water vapor transmission rate: testing was carried out according to the method of GB/T1037-1998;
oxygen transmission rate: the test is carried out according to the method of GB/T1038-2000;
the results of the above tests are shown in table 1 below:
TABLE 1
The design of the invention is characterized in that: the zinc blocks are ground into zinc powder with smaller particle size and evenly mixed with the sizing material obtained in the step (2) to form a finished product in the step (3), then the finished product is formed into a film and is wrapped on an electronic device, and the zinc serving as active metal and the humid air are subjected to chemical reaction in the process of permeating the film to generate basic zinc carbonate and consume a certain amount of oxygen and water, so that the water vapor transmission rate and the oxygen transmission rate are reduced, the electronic device is further prevented from being oxidized, and better protection is provided for the electronic device.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (1)
1. A waterproof and oxidation-resistant coating for electronic devices is characterized in that: the feed comprises the following raw materials in parts by mass: 45-50 parts of an ethylene-propylene copolymer; 5-10 parts of rosin resin; 30-40 parts of epoxy resin; 3-5 parts of a coupling agent; 3-5 parts of a dispersing agent; 10-15 parts of zinc powder; the coupling agent is vinyl trimethoxy silane, the epoxy resin is bisphenol F type epoxy resin, and the dispersing agent is sodium polyacrylate; the method comprises the following steps:
(1) zinc powder preparation: crushing a zinc block in an inert gas atmosphere to form zinc powder with the particle size of 8-13 mu m, wherein the inert gas is one or more of helium, argon and nitrogen;
(2) melting reaction: mixing ethylene-propylene copolymer, rosin resin and epoxy resin according to the proportion, heating to a molten state, adding a coupling agent and a dispersing agent, and stirring at the temperature of 150-;
(3) mixing zinc powder: and (3) putting the rubber material in the step (2) into inert gas, stirring at 100 ℃, and gradually adding the zinc powder in the step (1) for 1-2 hours, wherein the inert gas is one or more of helium, argon and nitrogen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110367365.8A CN112920647B (en) | 2021-04-06 | 2021-04-06 | Waterproof and anti-oxidation coating for electronic device and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110367365.8A CN112920647B (en) | 2021-04-06 | 2021-04-06 | Waterproof and anti-oxidation coating for electronic device and preparation method thereof |
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| CN112920647B true CN112920647B (en) | 2022-08-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778784A (en) * | 2016-05-27 | 2016-07-20 | 李红玉 | Binding agent for power electronic devices |
| CN105924760A (en) * | 2016-06-18 | 2016-09-07 | 赵月 | Packaging film for electronic components |
| CN108060432A (en) * | 2017-12-23 | 2018-05-22 | 马苗 | A kind of superfine active zinc powder preparation method |
| CN108976989A (en) * | 2018-06-29 | 2018-12-11 | 合肥信亚达智能科技有限公司 | Anti-static coatings of a kind of electronic equipment and preparation method thereof |
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- 2021-04-06 CN CN202110367365.8A patent/CN112920647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105778784A (en) * | 2016-05-27 | 2016-07-20 | 李红玉 | Binding agent for power electronic devices |
| CN105924760A (en) * | 2016-06-18 | 2016-09-07 | 赵月 | Packaging film for electronic components |
| CN106279941A (en) * | 2016-06-18 | 2017-01-04 | 赵月 | The preparation method of electronic devices and components encapsulating film |
| CN108060432A (en) * | 2017-12-23 | 2018-05-22 | 马苗 | A kind of superfine active zinc powder preparation method |
| CN108976989A (en) * | 2018-06-29 | 2018-12-11 | 合肥信亚达智能科技有限公司 | Anti-static coatings of a kind of electronic equipment and preparation method thereof |
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