CN111087824A - Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof - Google Patents
Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof Download PDFInfo
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 239000011324 bead Substances 0.000 claims abstract description 14
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 8
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 8
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 8
- -1 aluminum-silver Chemical compound 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 48
- 229920002545 silicone oil Polymers 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 27
- 238000004073 vulcanization Methods 0.000 claims description 27
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 229920005560 fluorosilicone rubber Polymers 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 4
- 239000012776 electronic material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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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
- C08L83/00—Compositions 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; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
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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
- C08K2003/0806—Silver
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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
- C08K2003/0812—Aluminium
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/04—Antistatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to the technical field of functional composite rubber in electronic materials, in particular to environment-resistant electromagnetic protection composite conductive rubber and a preparation method thereof. The composite conductive rubber is integrally vulcanized and molded by a conductive part and a non-conductive part, the basic performance of the prepared composite rubber completely meets the relevant standard of a conductive rubber gasket, and the fluorosilicone conductive rubber is used as base rubber and has stable performance in an oil seal environment, namely, oil corrosion resistance; the mildew-proof property and the flexibility of the composite strip are enhanced through the carbon nano tube reinforcing agent; the salt spray corrosion resistance of the aluminum-silver composite conductive rubber is enhanced through the graphene oxide; the glass beads enhance the thermal stability of the composite strip in the high-temperature forming process; the main function of the non-conducting part of the composite conductive rubber strip prepared by the invention is environmental sealing, and the main function of the conducting part is electromagnetic sealing. The special environment-resistant requirement of equipment for operation in an extreme environment on the electromagnetic protection sealing strip is met.
Description
Technical Field
The invention relates to the technical field of functional composite rubber in electronic materials, in particular to environment-resistant electromagnetic protection composite conductive rubber and a preparation method thereof.
Background
Electromagnetic shielding is a measure for preventing a high-frequency electromagnetic field from propagating in space by using a shielding body, and is an effective means for inhibiting radiation interference; electromagnetic leakage at gaps of assembly surfaces of shielding bodies such as a chassis, a cabinet and the like seriously influences the electromagnetic compatibility of equipment, and the conductive gasket can fill the gaps, improve the electrical continuity of contact surfaces, effectively inhibit leakage at the gaps and is the most widely applied shielding material at present.
The high-conductivity rubber composite material has excellent electromagnetic shielding performance and environmental sealing performance, but in coastal and humid environments, salt solution formed by humid moisture can be attached to the surfaces of electromagnetic shielding rubber and electronic equipment, so that electrochemical corrosion occurs on the local part of the conductive rubber, and the electromagnetic sealing performance and the environmental sealing performance of the conductive rubber sealing strip are influenced. In addition, the common conductive rubber strip is easy to corrode when used in an oil seal environment.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the environment-resistant electromagnetic protection composite conductive rubber with obvious environmental adaptability and the preparation method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an environment-resistant electromagnetic protection composite conductive rubber is integrally vulcanized and molded by a conductive part and a non-conductive part; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 260 parts of conductive silver powder 240-260 parts, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
Further, it is composed of a conductive portion and a non-conductive portion; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of fluorosilicone rubber, 260 parts of conductive silver powder, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
Further, the conductive silver powder is glass silver plating powder or aluminum silver plating powder.
Further, the reinforcing agent adopts carbon nano tubes or graphene oxide; the carbon nano tube enhances the mildew-proof property and the flexibility of the composite strip; the salt spray corrosion resistance of the aluminum-silver composite conductive rubber is enhanced by the graphene oxide.
Further, the vulcanizing agent adopts hydrogen-containing silicone oil.
Further, chloroplatinic acid is used as the vulcanization accelerator.
A preparation method of environment-resistant electromagnetic protection composite conductive rubber comprises the following steps:
s1, weighing raw materials of the conductive part and the non-conductive part according to the formula respectively;
s2, adding the conductive rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s3, adding the conductive silver powder and the reinforcing agent into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s4, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a conductive rubber material;
s5, adding the non-conducting rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s6, adding the glass beads into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s7, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a non-conductive rubber material;
s8, respectively filling the conductive rubber compound prepared in the S4 and the non-conductive rubber compound prepared in the S7 into two material cylinders of a double-material extruder for extrusion, and vulcanizing and forming at the high temperature of 300 ℃.
Further, the cross section of the conductive rubber molded in the step S8 is hollow or solid.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an environment-resistant electromagnetic protection composite conductive rubber and a preparation method thereof, the basic performance of the prepared composite conductive rubber strip completely meets the relevant standard of a conductive rubber gasket, and the composite conductive rubber strip has stable performance in an oil-sealed environment by taking fluorosilicone conductive rubber as base rubber, namely is resistant to oil corrosion; the mildew-proof property and the flexibility of the composite strip are enhanced through the carbon nano tube reinforcing agent; the salt spray corrosion resistance of the aluminum-silver composite conductive rubber is enhanced through the graphene oxide; the glass beads enhance the thermal stability of the composite strip in the high-temperature forming process; the main function of the non-conducting part of the composite conductive rubber strip prepared by the invention is environmental sealing, and the main function of the conducting part is electromagnetic sealing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An environment-resistant electromagnetic protection composite conductive rubber is integrally vulcanized and molded by a conductive part and a non-conductive part; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 260 parts of conductive silver powder 240-260 parts, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
Further, it is composed of a conductive portion and a non-conductive portion; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of fluorosilicone rubber, 260 parts of conductive silver powder, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
In the embodiment, the conductive silver powder is glass silver plating powder or aluminum silver plating powder; the reinforcing agent adopts carbon nano tubes or graphene oxide; the carbon nano tube enhances the mildew-proof property and the flexibility of the composite strip; the salt spray corrosion resistance of the aluminum-silver composite conductive rubber is enhanced by the graphene oxide. The vulcanizing agent adopts hydrogen-containing silicone oil. The vulcanization accelerator adopts chloroplatinic acid.
Example 1
S1, weighing raw materials of the conductive part and the non-conductive part according to the formula respectively; wherein the conductive part comprises 100 parts of silicon rubber, 248 parts of glass silver plating powder, 1.0 part of carbon nano tube reinforcing agent, 1.2 parts of silane coupling agent, 0.62 part of hydroxyl silicone oil, 1.31 parts of vulcanizing agent hydrogen-containing silicone oil and 0.62 part of vulcanization accelerator chloroplatinic acid; the non-conducting part is prepared from 100 parts of silicon rubber, 18 parts of glass beads, 0.41 part of hydroxyl silicone oil, 0.58 part of vulcanizing agent hydrogen-containing silicone oil and 0.52 part of vulcanization accelerator chloroplatinic acid;
s2, adding the conductive rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s3, adding the glass silver plating powder and the reinforcing agent into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s4, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a conductive rubber material;
s5, adding the non-conducting rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s6, adding the glass beads into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s7, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a non-conductive rubber material;
s8, respectively filling the conductive rubber compound prepared in the S4 and the non-conductive rubber compound prepared in the S7 into two material cylinders of a double-material extruder for extrusion, and vulcanizing and forming at the high temperature of 300 ℃.
The composite conductive rubber strip prepared according to the process formula has the following performance tests:
example 2
S1, weighing raw materials of the conductive part and the non-conductive part according to the formula respectively; the material formula of the conductive part comprises 100 parts of fluorosilicone rubber, 268 parts of aluminum-plated silver powder, 0.85 part of graphene oxide, 0.56 part of hydroxyl silicone oil, 1.28 parts of vulcanizing agent hydrogen-containing silicone oil and 0.665 part of vulcanization accelerator; the material formula of the non-conducting part comprises 100 parts of fluorosilicone rubber, 16 parts of glass beads, 3.8 parts of silane coupling agent, 0.42 part of hydroxyl silicone oil, 0.58 part of vulcanizing agent hydrogen-containing silicone oil and 0.48 part of vulcanization accelerator;
s2, adding the conductive rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s3, adding the aluminum-plated silver powder and the reinforcing agent into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s4, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a conductive rubber material;
s5, adding the non-conducting rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s6, adding the glass beads into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s7, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a non-conductive rubber material;
s8, respectively filling the conductive rubber compound prepared in the S4 and the non-conductive rubber compound prepared in the S7 into two material cylinders of a double-material extruder for extrusion, and vulcanizing and forming at the high temperature of 300 ℃.
The composite conductive rubber strip prepared according to the process formula has the following performance tests:
the cross section of the conductive rubber molded in the embodiment is hollow or solid.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (8)
1. The environment-resistant electromagnetic protection composite conductive rubber is characterized in that: the conductive part and the non-conductive part are integrally vulcanized and molded; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 260 parts of conductive silver powder 240-260 parts, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
2. The environment-resistant electromagnetic protection composite conductive rubber as claimed in claim 1, wherein: the conductive part and the non-conductive part form the conductive part; the conductive part is prepared from the following raw materials in parts by weight: 100 parts of fluorosilicone rubber, 260 parts of conductive silver powder, 0.8-1.8 parts of silane coupling agent, 0.5-1.5 parts of reinforcing agent, 0.4-0.75 part of hydroxyl silicone oil, 1.2-1.5 parts of vulcanizing agent and 0.6-0.95 part of vulcanization accelerator; the non-conducting part is prepared from the following raw materials in parts by weight: 100 parts of silicon rubber, 15-20 parts of glass beads, 3-5 parts of silane coupling agent, 0.38-0.45 part of hydroxyl silicone oil, 0.4-0.65 part of vulcanizing agent and 0.45-0.55 part of vulcanization accelerator.
3. The environment-resistant electromagnetic protection composite conductive rubber as claimed in claim 1, wherein: the conductive silver powder is glass silver plating powder or aluminum silver plating powder.
4. The environment-resistant electromagnetic protection composite conductive rubber as claimed in claim 1, wherein: the reinforcing agent adopts carbon nano tubes or graphene oxide.
5. The environment-resistant electromagnetic protection composite conductive rubber as claimed in claim 1, wherein: the vulcanizing agent adopts hydrogen-containing silicone oil.
6. The environment-resistant electromagnetic protection composite conductive rubber as claimed in claim 1, wherein: the vulcanization accelerator adopts chloroplatinic acid.
7. A preparation method of environment-resistant electromagnetic protection composite conductive rubber is characterized by comprising the following steps:
s1, weighing raw materials of the conductive part and the non-conductive part according to the formula respectively;
s2, adding the conductive rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s3, adding the conductive silver powder and the reinforcing agent into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s4, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a conductive rubber material;
s5, adding the non-conducting rubber base material, the hydroxyl silicone oil and the silane coupling agent into an internal mixer for mixing for 10-15 minutes;
s6, adding the glass beads into an internal mixer, and continuously mixing for 15-20 minutes, wherein the mixing temperature is controlled below 80 ℃;
s7, adding a vulcanizing agent, mixing for 3-5 minutes, adding a vulcanization accelerator, mixing for 3-5 minutes, and controlling the mixing temperature to be below 35 ℃ to obtain a non-conductive rubber material;
s8, respectively filling the conductive rubber compound prepared in the S4 and the non-conductive rubber compound prepared in the S7 into two material cylinders of a double-material extruder for extrusion, and vulcanizing and forming at the high temperature of 300 ℃.
8. The preparation method of the environment-resistant electromagnetic protection composite conductive rubber according to claim 7, characterized by comprising the following steps: the cross section of the conductive rubber formed in the step S8 is hollow or solid.
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| CN202010013600.7A CN111087824A (en) | 2020-01-07 | 2020-01-07 | Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof |
| PCT/CN2020/082703 WO2021139011A1 (en) | 2020-01-07 | 2020-04-01 | Environment-resistant electromagnetic protection composite conductive rubber and preparation method therefor |
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| CN202010013600.7A CN111087824A (en) | 2020-01-07 | 2020-01-07 | Environment-resistant electromagnetic protection composite conductive rubber and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083415A1 (en) * | 2020-10-23 | 2022-04-28 | 深圳市市政设计研究院有限公司 | Wide-range high-toughness nano-conductive rubber sensor, and preparation and packaging methods therefor |
| CN115637049A (en) * | 2022-10-27 | 2023-01-24 | 深圳市飞荣达科技股份有限公司 | High-conductivity oil-resistant fluorine-silicon composite rubber and preparation method thereof |
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| CN107652688B (en) * | 2017-10-09 | 2023-04-11 | 平湖阿莱德实业有限公司 | High-stability conductive elastomer for electromagnetic shielding and preparation method thereof |
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| US20140061552A1 (en) * | 2011-05-25 | 2014-03-06 | Bin Zeng | Plastic-based composite material capable of conducting electricity and shielding electromagnetic wave and preparation method thereof |
| CN105504818A (en) * | 2015-12-24 | 2016-04-20 | 中国电子科技集团公司第三十三研究所 | Co-extrusion type water-air sealing composite conductive rubber strip |
| CN108530898A (en) * | 2018-03-09 | 2018-09-14 | 中国电子科技集团公司第三十三研究所 | A kind of tear-proof high-flexibility conductive rubber and preparation method thereof |
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| WO2022083415A1 (en) * | 2020-10-23 | 2022-04-28 | 深圳市市政设计研究院有限公司 | Wide-range high-toughness nano-conductive rubber sensor, and preparation and packaging methods therefor |
| CN115637049A (en) * | 2022-10-27 | 2023-01-24 | 深圳市飞荣达科技股份有限公司 | High-conductivity oil-resistant fluorine-silicon composite rubber and preparation method thereof |
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