CN112390979A - Preparation method of high-temperature conductive shielding silica gel foam - Google Patents
Preparation method of high-temperature conductive shielding silica gel foam Download PDFInfo
- Publication number
- CN112390979A CN112390979A CN202011125502.9A CN202011125502A CN112390979A CN 112390979 A CN112390979 A CN 112390979A CN 202011125502 A CN202011125502 A CN 202011125502A CN 112390979 A CN112390979 A CN 112390979A
- Authority
- CN
- China
- Prior art keywords
- silica gel
- gel foam
- preparation
- die
- product
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/46—Electroplating: Baths therefor from solutions of silver
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Abstract
The invention relates to a preparation technology of silica gel foam, in particular to a preparation method of high-temperature conductive shielding silica gel foam; the method comprises the following steps: A. peeling the smooth cortex on the upper surface and the lower surface of the high-temperature silica gel foam to ensure that the four sides of the silica gel foam are open; B. opening a forming cutting die for the peeled silica gel foam according to the requirements of a drawing; C. die cutting the silica gel foam by using a die; D. carrying out primary spraying treatment on the surface of the die-cut finished product; E. heating the product after the primary spraying in an oven at 100 ℃ for 10 minutes, and carrying out secondary chemical electroplating on the product after the primary spraying and baking, and standing and electroplating for 60-70min in an electroplating tank; the preparation method is simple, the prepared silica gel foam can keep good mechanical property for a long time in an environment with the high temperature of more than 200 ℃, the thickness loss rate of an aging test carried out for 22 hours by compressing 50% at 100 ℃ is lower than 5%, and in addition, the preparation method adopted by the invention has low preparation cost.
Description
Technical Field
The invention relates to a preparation technology of silica gel foam, in particular to a preparation method of high-temperature conductive shielding silica gel foam.
Background
The silica gel foam is widely applied to the fields of airplanes, high-speed trains, space shuttles, new energy automobile battery packs, notebook computers, personal electronic products, medical supplies and the like, and plays roles in shock absorption, heat insulation, sealing, water prevention, noise reduction and the like.
At present, the product is a new domestic product and new process, the domestic EMI product without high-temperature shielding foam is used for a while, and the domestic conventional product belongs to liquid rubber added with glass silver and is subjected to high-temperature compression molding; the production efficiency is low, the cost is high, the defects are high, the highest temperature resistance is 120 ℃, and the resistance is less than or equal to 0.5 omega; the high-temperature-resistant rubber has no excellent high-temperature-resistant performance, cannot meet the effect of long-time application under high-temperature conditions, and has poor compression resilience.
Disclosure of Invention
The invention aims to provide a preparation method of high-temperature conductive shielding silica gel foam, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of high-temperature conductive shielding silica gel foam comprises the following steps:
A. peeling the smooth cortex on the upper surface and the lower surface of the high-temperature silica gel foam to ensure that the four sides of the silica gel foam are open;
B. opening a forming cutting die for the peeled silica gel foam according to the requirements of a drawing;
C. die cutting the silica gel foam by using a die;
D. carrying out primary spraying treatment on the surface of the die-cut finished product;
E. the once-sprayed product was oven heated at 100 ℃ for 10 minutes.
F. Carrying out secondary chemical plating on the product subjected to primary spraying and baking, and statically plating for 60-70min in a plating tank;
G. and after the electroplating time is finished, baking the product at 100 ℃ for 30min to completely solidify the surface of the product.
Preferably, the spraying treatment in the step D specifically means that glass silver is adopted as the spraying material, wherein the weight of the glass silver is 20% of the total components of the spraying material.
Preferably, the plating solution in the plating bath in the step F is a glass silver plating solution with a concentration of 80%.
The invention has the beneficial effects that: the preparation method of the high-temperature conductive shielding silica gel foam is simple, the prepared silica gel foam can keep good mechanical performance for a long time in an environment with the high temperature of more than 200 ℃, the thickness loss rate of an aging test performed for 22 hours by compressing 50% at 100 ℃ is lower than 5%, and in addition, the preparation method adopted by the invention is low in preparation cost, can ensure that all component materials are fully mixed, and further improves the performance of the silica gel foam.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
A preparation method of high-temperature conductive shielding silica gel foam comprises the following steps:
A. peeling the smooth cortex on the upper surface and the lower surface of the high-temperature silica gel foam to ensure that the four sides of the silica gel foam are open;
B. opening a forming cutting die for the peeled silica gel foam according to the requirements of a drawing;
C. die cutting the silica gel foam by using a die;
D. carrying out primary spraying treatment on the surface of the die-cut finished product;
E. the once-sprayed product was oven heated at 100 ℃ for 10 minutes.
F. Carrying out secondary chemical plating on the product subjected to primary spraying and baking, and statically plating for 60-70min in a plating tank;
G. and after the electroplating time is finished, baking the product at 100 ℃ for 30min to completely solidify the surface of the product.
The spraying treatment in the step D specifically means that glass silver is adopted as a spraying object, wherein the weight of the glass silver is 20% of the total components of the spraying object.
And F, electroplating solution in the electroplating bath is glass silver electroplating solution with the concentration of 80%.
The preparation method of the high-temperature conductive shielding silica gel foam is simple, the prepared silica gel foam can keep good mechanical performance for a long time in an environment with the high temperature of more than 200 ℃, the thickness loss rate of an aging test performed for 22 hours by compressing 50% at 100 ℃ is lower than 5%, and in addition, the preparation method adopted by the invention is low in preparation cost, can ensure that all component materials are fully mixed, and further improves the performance of the silica gel foam.
The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (3)
1. A preparation method of high-temperature conductive shielding silica gel foam is characterized by comprising the following steps: the method comprises the following steps:
A. peeling the smooth cortex on the upper surface and the lower surface of the high-temperature silica gel foam to ensure that the four sides of the silica gel foam are open;
B. opening a forming cutting die for the peeled silica gel foam according to the requirements of a drawing;
C. die cutting the silica gel foam by using a die;
D. carrying out primary spraying treatment on the surface of the die-cut finished product;
E. the once-sprayed product was oven heated at 100 ℃ for 10 minutes.
F. Carrying out secondary chemical plating on the product subjected to primary spraying and baking, and statically plating for 60-70min in a plating tank;
G. and after the electroplating time is finished, baking the product at 100 ℃ for 30min to completely solidify the surface of the product.
2. The method for preparing the high-temperature conductive shielding silica gel foam according to claim 1, which is characterized in that: the spraying treatment in the step D specifically means that glass silver is adopted as a spraying object, wherein the weight of the glass silver is 20% of the total components of the spraying object.
3. The method for preparing the high-temperature conductive shielding silica gel foam according to claim 1, which is characterized in that: and F, electroplating solution in the electroplating bath is glass silver electroplating solution with the concentration of 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125502.9A CN112390979A (en) | 2020-10-20 | 2020-10-20 | Preparation method of high-temperature conductive shielding silica gel foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125502.9A CN112390979A (en) | 2020-10-20 | 2020-10-20 | Preparation method of high-temperature conductive shielding silica gel foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112390979A true CN112390979A (en) | 2021-02-23 |
Family
ID=74596911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011125502.9A Pending CN112390979A (en) | 2020-10-20 | 2020-10-20 | Preparation method of high-temperature conductive shielding silica gel foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112390979A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313585A (en) * | 2013-05-24 | 2013-09-18 | 深圳市鸿富诚屏蔽材料有限公司 | Conductive foam and preparation method thereof |
| CN105385170A (en) * | 2015-12-24 | 2016-03-09 | 平湖阿莱德实业有限公司 | Low-filling-volume high-conductivity liquid silicon rubber |
| CN110337233A (en) * | 2019-07-02 | 2019-10-15 | 深圳市卓汉材料技术有限公司 | A kind of packaging type conductive high temperature resistance elastomer |
| CN110500408A (en) * | 2019-08-27 | 2019-11-26 | 昆山博益鑫成高分子材料有限公司 | A kind of silica gel sealing washer and its adhesive bonding method |
| CN111629577A (en) * | 2020-05-21 | 2020-09-04 | 睿惢思工业科技（苏州）有限公司 | Method for manufacturing conductive gasket |
-
2020
- 2020-10-20 CN CN202011125502.9A patent/CN112390979A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313585A (en) * | 2013-05-24 | 2013-09-18 | 深圳市鸿富诚屏蔽材料有限公司 | Conductive foam and preparation method thereof |
| CN105385170A (en) * | 2015-12-24 | 2016-03-09 | 平湖阿莱德实业有限公司 | Low-filling-volume high-conductivity liquid silicon rubber |
| CN110337233A (en) * | 2019-07-02 | 2019-10-15 | 深圳市卓汉材料技术有限公司 | A kind of packaging type conductive high temperature resistance elastomer |
| CN110500408A (en) * | 2019-08-27 | 2019-11-26 | 昆山博益鑫成高分子材料有限公司 | A kind of silica gel sealing washer and its adhesive bonding method |
| CN111629577A (en) * | 2020-05-21 | 2020-09-04 | 睿惢思工业科技（苏州）有限公司 | Method for manufacturing conductive gasket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111592684B (en) | Preparation method of isolated thermoplastic elastomer composite microporous electromagnetic shielding material | |
| CN109705804B (en) | High enthalpy value phase-change silica gel gasket and preparation method thereof | |
| CN112911920A (en) | Preparation method of MXene-carbon aerogel/TPU composite material | |
| CN103632741B (en) | The preparation method of high heat-conductivity conducting graphene film | |
| CN104328344A (en) | Iron-based rust-proof powder metallurgy material and preparation method thereof | |
| CN112390979A (en) | Preparation method of high-temperature conductive shielding silica gel foam | |
| CN108129689A (en) | The preparation process of the shockproof polyurethane foam of heat conduction | |
| CN106190001A (en) | The polyurethane seal foamed glue that a kind of insect protected Mus bites | |
| CN106065309A (en) | A kind of expansible graphite works in coordination with the polyurethane foam glue of the fire-retardant enhancing of kieselguhr | |
| CN102250545A (en) | High temperature resistant antistatic coating and preparation method thereof | |
| CN113088156A (en) | Novel water-based epoxy self-drying paint capable of being rapidly cured in low-temperature environment and method | |
| CN102643604B (en) | Insulating paint for producing glass fiber insulating hose and preparation method thereof | |
| CN109256237A (en) | A kind of high pressure corrosion resistant erosion bus and coating process | |
| CN113784606A (en) | Titanium carbide and cobalt-nickel alloy composite wave-absorbing material and preparation method thereof | |
| CN106986962A (en) | A kind of lcd tv display radiation proof material and preparation method thereof | |
| CN112888285A (en) | Flame-retardant omnibearing conductive sponge material and preparation method thereof | |
| CN109133033A (en) | The method of porous carbon nano-particle outer surface coated silica | |
| CN110947954A (en) | Preparation method of high-quality copper-tin powder | |
| CN113278255B (en) | High-frequency-band heat-conduction wave-absorbing insulating pad with heat conductivity and wave absorption | |
| CN112064089B (en) | Fluorine-free and nickel-free graphene sealant for aluminum alloy and preparation method thereof | |
| CN108766687A (en) | A kind of preparation method of composite material system pillar silica gel composite insulator | |
| CN111961441B (en) | Preparation method of wave-absorbing material based on mulberry silk biomass charcoal | |
| CN110964266A (en) | Novel graphene aerogel material and preparation method thereof | |
| CN113024997A (en) | Heat insulation material capable of being hot-pressed and formed and preparation process thereof | |
| CN102367343A (en) | Hybrid capacitor aluminum housing coating paint and its preparation method |
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 |