CN113061829A - Preparation process of conductive silicone rubber - Google Patents
Preparation process of conductive silicone rubber Download PDFInfo
- Publication number
- CN113061829A CN113061829A CN202110291185.6A CN202110291185A CN113061829A CN 113061829 A CN113061829 A CN 113061829A CN 202110291185 A CN202110291185 A CN 202110291185A CN 113061829 A CN113061829 A CN 113061829A
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- CN
- China
- Prior art keywords
- silicone rubber
- layer
- conductive silicone
- spraying
- preparing
- 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.)
- Pending
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 29
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000007769 metal material Substances 0.000 claims abstract description 13
- 239000000741 silica gel Substances 0.000 claims abstract description 13
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000010288 cold spraying Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 abstract description 8
- 238000003754 machining Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Abstract
The invention relates to the technical field of conductive silicone rubber, in particular to a preparation process of conductive silicone rubber, which comprises the following steps: preparing silica gel or rubber as a base material; cleaning the surface of the substrate layer; spraying a metal material on the cleaned surface of the substrate to form a conductive layer; the invention is formed by adopting a spraying mode, and the metal conductive material is sprayed and attached to the surface of the silica gel or rubber base material in a hot spraying or cold spraying mode, so that the integral manufacturing process is simple, and the manufacturing cost is low.
Description
Technical Field
The invention relates to the technical field of conductive silicone rubber, in particular to a preparation process of conductive silicone rubber.
Background
The conductive silicone rubber is a product type of a silicone rubber product, and is usually used for the switch-on function of some electronic silicone rubber products because the conductive silicone rubber product has conductive performance, and the conductive silicone rubber can be conductive only by being subjected to a certain compression force, but not because the silicone rubber has conductive performance, generally, the conductive silicone rubber has the conductive function because external substances are embedded into the conductive silicone rubber, and commonly used are metal shrapnel, conductive black particles and the like. With the development and maturity of various electronic technologies, the application of the conductive silicone rubber in electronic products is also more and more extensive. The existing conductive silica gel rubber generally has the disadvantages of complex preparation cost, high cost and high manufacturing difficulty.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation process of conductive silicone rubber, which is formed by adopting a spraying mode, wherein a metal conductive material is sprayed and attached to the surface of a silica gel or rubber substrate in a hot spraying or cold spraying mode, the whole manufacturing process is simple, and the manufacturing cost is low.
The technical scheme adopted by the invention is as follows: a preparation process of conductive silicone rubber comprises the following steps:
step S1, preparing silica gel or rubber as a base material;
step S2, cleaning the surface of the substrate layer;
step S3, spraying a metal material on the cleaned surface of the substrate to form a conductive layer;
step S4, polishing or machining the conductive layer to form a conductive material.
The further improvement of the scheme is that the surface of the base material is a flat surface, a circular arc surface or an irregular surface.
In a further improvement of the above solution, in step S3, at least one conductive layer is sprayed.
The further improvement of the scheme is that the conductive layer is one or the combination of more than two of a nickel layer, a copper layer, a gold layer, a zinc layer, a tin layer or an aluminum layer.
In a further improvement of the above, the thickness of the conductive layer is greater than or equal to 2.0 μm.
In a further improvement of the above solution, in step S3, the metal material is sprayed on the surface of the substrate by cold spraying, hot spraying or a combination of the two methods.
In a further improvement of the above solution, the injection speed of the cold spray is more than 600 m/s.
In a further modification of the foregoing, in step S3, the temperature of the hot spray outlet is adjusted according to the melting point of the metal used.
The scheme is further improved in that in the step S3, the grain diameter of the sprayed metal material is 2-30 μm.
The invention has the beneficial effects that:
compared with the traditional conductive silicone rubber preparation process, the conductive silicone rubber is formed by adopting a spraying mode, the metal conductive material is sprayed and attached to the surface of the silica gel or rubber substrate in a hot spraying or cold spraying mode, the overall manufacturing process is simple, the manufacturing cost is low, the conductive silica gel or rubber can be formed by spraying only, the structure is reliable, and the stability is strong. Specifically, the manufacturing process is to prepare silica gel or rubber as a base material; cleaning the surface of the substrate layer; spraying a metal material on the cleaned surface of the substrate to form a conductive layer; polishing or machining the conductive layer forms the conductive material.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, a process for preparing conductive silicone rubber comprises the following steps:
step S1, preparing silica gel or rubber as a base material;
step S2, cleaning the surface of the substrate layer;
step S3, spraying a metal material on the cleaned surface of the substrate to form a conductive layer;
step S4, polishing or machining the conductive layer to form a conductive material.
The surface of the base material is a flat surface, a circular arc surface or an irregular surface, and can be sprayed on any surface, so that the application range is wide.
In step S3, at least one conductive layer is sprayed, which may be a multi-layer spray, and the spraying is performed according to the use requirement.
The conducting layer is one or the combination of more than two of nickel layer, copper layer, gold layer, zinc layer, tin layer or aluminium layer, selects the spraying thing according to the user demand, guarantees to conduct the transmission.
The thickness of the conductive layer is more than or equal to 2.0 μm, the adhesion effect is good, and the spraying efficiency is high.
In step S3, the metallic material is sprayed onto the surface of the substrate by cold spraying, hot spraying, or a combination thereof.
The metal material is sprayed on the surface of the base material through cold spraying, the spraying speed of the cold spraying is more than 600m/s, and the spraying speed of the cold spraying is more than 600m/s, so that the better adhesion effect of sprayed particles can be ensured.
In step S3, in step S3, the thermal spray outlet temperature is adjusted according to the melting point of the used metal; ensuring that the sprayed substance is better attached to the surface of the base material.
In the step S3, the particle size of the sprayed metal material is 2-30 μm; the diameter of the powder spraying particles can be selected according to different product requirements, and better adhesion in the spraying process can be ensured.
The invention is formed by adopting a spraying mode, the metal conductive material is sprayed and attached to the surface of the silica gel or rubber substrate in a hot spraying or cold spraying mode, the integral manufacturing process is simple, the manufacturing cost is low, the conductive silica gel or rubber can be formed by spraying only, the structure is reliable, and the stability is strong. Specifically, the manufacturing process is to prepare silica gel or rubber as a base material; cleaning the surface of the substrate layer; spraying a metal material on the cleaned surface of the substrate to form a conductive layer; polishing or machining the conductive layer forms the conductive material.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A preparation process of conductive silicone rubber is characterized by comprising the following steps: the method comprises the following steps:
step S1, preparing silica gel or rubber as a base material;
step S2, cleaning the surface of the substrate layer;
and step S3, spraying a metal material on the cleaned surface of the substrate to form a conductive layer.
2. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: the surface of the base material is a flat surface, a circular arc surface or an irregular surface.
3. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: in step S3, at least one conductive layer is sprayed.
4. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: the conductive layer is one or the combination of more than two of a nickel layer, a copper layer, a gold layer, a zinc layer, a tin layer or an aluminum layer.
5. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: the thickness of the conductive layer is greater than or equal to 2.0 μm.
6. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: in step S3, the metal material is sprayed on the surface of the substrate by cold spraying, hot spraying or a combination of the two.
7. The process for preparing an electrically conductive silicone rubber according to claim 6, characterized in that: the spraying speed of the cold spraying is more than 600 m/s.
8. The process for preparing an electrically conductive silicone rubber according to claim 6, characterized in that: in the step S3, the thermal spray outlet temperature is adjusted according to the melting point of the metal used.
9. The process for preparing an electrically conductive silicone rubber according to claim 1, characterized in that: in the step S3, the particle size of the sprayed metal material is 2-30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291185.6A CN113061829A (en) | 2021-03-18 | 2021-03-18 | Preparation process of conductive silicone rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291185.6A CN113061829A (en) | 2021-03-18 | 2021-03-18 | Preparation process of conductive silicone rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113061829A true CN113061829A (en) | 2021-07-02 |
Family
ID=76562103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110291185.6A Pending CN113061829A (en) | 2021-03-18 | 2021-03-18 | Preparation process of conductive silicone rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113061829A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894509A (en) * | 2015-05-17 | 2015-09-09 | 深圳市信太通讯有限公司 | Plastic coating metal imitation process |
| CN107904537A (en) * | 2017-12-08 | 2018-04-13 | 贵州煜环机械塑料有限公司 | A kind of method of plastic plate plating metal on surface |
| WO2019148162A1 (en) * | 2018-01-29 | 2019-08-01 | The Boeing Company | Cold spray metallic coating and methods |
| CN110158012A (en) * | 2019-05-21 | 2019-08-23 | 中国科学院宁波材料技术与工程研究所 | A kind of method of metallizing rubber surface |
-
2021
- 2021-03-18 CN CN202110291185.6A patent/CN113061829A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894509A (en) * | 2015-05-17 | 2015-09-09 | 深圳市信太通讯有限公司 | Plastic coating metal imitation process |
| CN107904537A (en) * | 2017-12-08 | 2018-04-13 | 贵州煜环机械塑料有限公司 | A kind of method of plastic plate plating metal on surface |
| WO2019148162A1 (en) * | 2018-01-29 | 2019-08-01 | The Boeing Company | Cold spray metallic coating and methods |
| CN110158012A (en) * | 2019-05-21 | 2019-08-23 | 中国科学院宁波材料技术与工程研究所 | A kind of method of metallizing rubber surface |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210702 |