CN111087678A - Conductive foam EVA material and preparation method thereof - Google Patents
Conductive foam EVA material and preparation method thereof Download PDFInfo
- Publication number
- CN111087678A CN111087678A CN201911347240.8A CN201911347240A CN111087678A CN 111087678 A CN111087678 A CN 111087678A CN 201911347240 A CN201911347240 A CN 201911347240A CN 111087678 A CN111087678 A CN 111087678A
- Authority
- CN
- China
- Prior art keywords
- foam
- foam matrix
- conductive
- eva
- preparation
- 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
- 239000006260 foam Substances 0.000 title claims abstract description 71
- 239000000463 material Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229920001690 polydopamine Polymers 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002070 nanowire Substances 0.000 claims abstract description 15
- QNODUWNUZGTHCV-UHFFFAOYSA-M sodium;benzenecarbodithioate Chemical compound [Na+].[S-]C(=S)C1=CC=CC=C1 QNODUWNUZGTHCV-UHFFFAOYSA-M 0.000 claims abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 239000002243 precursor Substances 0.000 claims abstract description 12
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- 239000006185 dispersion Substances 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000001291 vacuum drying Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007723 die pressing method Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000012279 sodium borohydride Substances 0.000 claims description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 3
- 229910004042 HAuCl4 Inorganic materials 0.000 claims description 2
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 2
- 229960005070 ascorbic acid Drugs 0.000 claims description 2
- 235000010323 ascorbic acid Nutrition 0.000 claims description 2
- 239000011668 ascorbic acid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 12
- 238000005054 agglomeration Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000013012 foaming technology Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical group [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- 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
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- 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
- C08J9/0014—Use of organic additives
- C08J9/0033—Use of organic additives containing sulfur
-
- 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
- C08J9/0066—Use of inorganic compounding ingredients
-
- 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
- C08J9/0066—Use of inorganic compounding ingredients
- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
- C08J9/0076—Nanofibres
-
- 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
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a conductive foam EVA material and a preparation method thereof, wherein the preparation method comprises the following steps: the foam substrate and the metal nanowires dispersed on the surface and in the pores of the foam substrate form a conductive network; the foam matrix comprises the following raw materials: EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO; the preparation method of the conductive network formed by the metal nanowires dispersed on the surface and in the pores of the foam matrix comprises the following steps: dispersing a metal precursor and polydopamine in water, soaking a foam matrix in the dispersion, adding sodium hydroxide, fully reacting, taking out the foam matrix, vacuum drying, adding the foam matrix into the water again, adding a reducing agent, and heating to 60 ℃ for reaction for 1 hour.
Description
Technical Field
The invention belongs to the field of foam materials, and particularly relates to a conductive foam EVA material and a preparation method thereof.
Background
With the advancement of foam technology, various advanced instruments are being updated. Conventional foams (EVA) have not been able to meet market demands. The market is more trending towards a characterized, multi-functional foam. We have made conventional foam (EVA) conductive by treating a conventionally synthesized simple foam using an immersion process. Computer, LCD display, LCD TV, laser printer, high-speed copier, communication equipment, mobile phone, satellite communication, medical equipment, high-voltage machine test, gasket/baffle/adhesive tape/copper foil/aluminum foil in instrument and meter, etc. The price of each square is estimated to be 90 yuan for the application in the computer, LCD display and liquid crystal television industries. The monthly demand of the industry exceeds 100 square meters. The price in the laser printer, high speed copier industry is around 50 dollars per square meter. The composite material has great value in communication equipment, mobile phones, satellite communication, medical equipment, high-voltage machine tests, gaskets, separators, adhesive tapes, copper foils, aluminum foils and the like in instruments and meters.
Disclosure of Invention
The invention provides a conductive foam EVA material and a preparation method thereof, which have the characteristics of increasing the functions of foam (EVA), prolonging the service life of a precision instrument, eliminating the surface static electricity of the instrument, and having the excellent characteristics of shock absorption, good shielding efficiency, conductivity and the like.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
an electrically conductive foamed EVA material comprising: the foam substrate and the metal nanowires dispersed on the surface and in the pores of the foam substrate form a conductive network; the foam matrix comprises the following raw materials: EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO; the preparation method of the conductive network formed by the metal nanowires dispersed on the surface and in the pores of the foam matrix comprises the following steps: dispersing a metal precursor and polydopamine in water, soaking a foam matrix in the dispersion, adding sodium hydroxide, fully reacting, taking out the foam matrix, vacuum drying, adding the foam matrix into the water again, adding a reducing agent, heating to 60 ℃ and reacting for 1 hour.
Further, the mass ratio of EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO in the raw materials of the foam matrix is 100: 0.1: 0.2: 0.4: 2.2: 1.2: 0.8.
further, the metal precursor is Cu (NO)3)2，HAuCl4，AgNO3，(NH4)2PdCl6，NiCl2One or more of them.
Further, the reducing agent is one of sodium borohydride, ascorbic acid and formaldehyde.
Further, the preparation method of the conductive network formed by the metal nanowires dispersed on the surface and in the pores of the foam matrix comprises the following steps: dispersing 1 part by mass of metal precursor and 5 parts by mass of polydopamine in 100 parts by mass of water, soaking 50 parts by mass of foam matrix in the dispersion, adding sodium hydroxide, adjusting the pH value to 10, taking out the foam matrix after full reaction, drying the foam matrix in vacuum, adding excessive reducing agent into the water again, heating the mixture to 60 ℃ and reacting the mixture for 1 hour to obtain the polydopamine-containing foam
A preparation method of a conductive foam EVA material comprises the following steps:
1) placing EVA, sodium dithiobenzoate, stearic acid and zinc stearate into a preheated internal mixer, uniformly mixing for 5min at 120 ℃ and 50rpm, then adding AC, dicumyl peroxide and ZnO into the inner cavity of the internal mixer, and uniformly mixing for 10min at 25rpm to obtain a mixture;
2) transferring the mixture obtained in the step 1) to a double-roller open mill while the mixture is hot, continuously mixing for 10-30 min, pressing the materials into 35mm thin sheets, and further cutting the thin sheets into sheets with certain sizes;
3) placing the mixture into a preheated die cavity of a flat vulcanizing machine, carrying out die pressing foaming for 10min under the conditions of 10MPa and 180190 ℃, then taking out the material, and carrying out pressure maintaining and feeding for 12h at room temperature to obtain a foam matrix;
4) dispersing a metal precursor and polydopamine in water, soaking a foam matrix in the dispersion, adding sodium hydroxide, fully reacting, taking out the foam matrix, vacuum drying, adding the foam matrix into the water again, adding a reducing agent, heating to 60 ℃ and reacting for 1 hour.
The conductive EVA is produced by a polymer composite material foaming technology, has uniform foaming pore diameter, is soft and elastic, does not desquamate, and the conductive sponge has the characteristics of long conductive effective period, no influence of temperature and humidity on the conductive sponge, customized surface resistance value according to actual application and the like.
The invention relates to a conductive foam and a corresponding preparation method thereof. The preparation method of the foam at least comprises a foam matrix and a conductive network formed by metal nanowires dispersed on the surface of an open-cell material or in cell pores. The conductive foam has the characteristics of light weight and high conductivity, and the preparation method is simple.
The invention has the beneficial effects that:
1. EVA foam is used as a three-dimensional network substrate; a film is formed on the surface of the metal precursor and the polydopamine PDA, the interfacial adhesion between a polymer and a nano material is regulated and controlled by the polydopamine, and a nanowire is formed after a reducing agent is added, so that the nano-wire has good coverage and a three-dimensional network structure, and the conductivity can be enhanced;
2. the sodium dithiobenzoate is added into the foam to promote active sites on the surfaces of foam pores, so that the appearance of the nanowire can be effectively adjusted, the formation of a three-dimensional network is promoted, and the conductivity is enhanced.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Any modifications that can be easily made by a person skilled in the art to the present invention without departing from the technical solutions of the present invention will fall within the scope of the claims of the present invention.
Example 1
A preparation method of a conductive foam EVA material comprises the following steps:
1) placing EVA, sodium dithiobenzoate, stearic acid and zinc stearate into a preheated internal mixer, uniformly mixing for 5min at 120 ℃ and 50rpm, then adding AC, dicumyl peroxide and ZnO into the inner cavity of the internal mixer, and uniformly mixing for 10min at 25rpm to obtain a mixture; the mass ratio of EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO in the raw materials of the foam matrix is 100: 0.1: 0.2: 0.4: 2.2: 1.2: 0.8;
2) transferring the mixture obtained in the step 1) to a double-roller open mill while the mixture is hot, continuously mixing for 10-30 min, pressing the materials into 35mm thin sheets, and further cutting the thin sheets into sheets with certain sizes;
3) placing the mixture into a preheated die cavity of a flat vulcanizing machine, carrying out die pressing foaming for 10min under the conditions of 10MPa and 180190 ℃, then taking out the material, and carrying out pressure maintaining and feeding for 12h at room temperature to obtain a foam matrix;
4) dispersing 1 part by mass of metal precursor and 5 parts by mass of polydopamine in 100 parts by mass of water, soaking 50 parts by mass of foam matrix in the dispersion, adding sodium hydroxide, adjusting the pH value to 10, taking out the foam matrix after full reaction, drying the foam matrix in vacuum, adding excessive reducing agent into the water again, and heating the mixture to 60 ℃ to react for 1 hour; the metal precursor is Cu (NO)3)2. The reducing agent is sodium borohydride.
Comparative example 1
Same as example 1 except that polydopamine was replaced with cetyltrimethylammonium bromide, a common surfactant.
Comparative example 2
Same as example 1 except that polydopamine was not added.
Comparative example 3
Same as example 1 except that no sodium dithiobenzoate was added.
Comparative example 4
Same as example 1 except that sodium dithiobenzoate and polydopamine were not added.
Comparative example 5
Foams were prepared according to the contents of CN106366423B example 1.
The products of examples and comparative examples were tested for resistivity while observing the coverage of the inner nanowires by SEM, and tested for BET.
TABLE 1
| Resistivity M omega M | Amount of coverage | BET (nitrogen adsorption m)2/g) | |
| Example 1 | 16.3 | Good dispersion | 368 |
| Comparative example 1 | 52.2 | Severe agglomeration | 205 |
| Comparative example 2 | 56.1 | Severe agglomeration | 386 |
| Comparative example 3 | 43.9 | With partial agglomeration | 364 |
| Comparative example 4 | 60.4 | Severe agglomeration | 392 |
| Comparative example 5 | 41.3 | - | 387 |
According to the numerical values of the embodiment and the comparative example, the dispersibility of the nanowire can be effectively adjusted by adding the polydopamine, and compared with a common surfactant, the polydopamine nanowire can not block a pore channel and can effectively enhance the conductivity; the addition of sodium dithiobenzoate can effectively improve the conductivity; the sodium dithiobenzoate and the polydopamine are added simultaneously, so that the effect of synergistically enhancing the conductivity can be achieved, and the active site existence point of the sulfydryl can promote the adsorption of metal ions, can effectively promote the formation of a membrane and can improve the dispersibility of the metal ions.
Claims (6)
1. A conductive foam EVA material is characterized in that: the method comprises the following steps: the foam substrate and the metal nanowires dispersed on the surface and in the pores of the foam substrate form a conductive network; the foam matrix comprises the following raw materials: EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO; the preparation method of the conductive network formed by the metal nanowires dispersed on the surface and in the pores of the foam matrix comprises the following steps: dispersing a metal precursor and polydopamine in water, soaking a foam matrix in the dispersion, adding sodium hydroxide, fully reacting, taking out the foam matrix, vacuum drying, adding the foam matrix into the water again, adding a reducing agent, heating to 60 ℃ and reacting for 1 hour.
2. The conductive foam EVA material of claim 1, wherein: the mass ratio of EVA, sodium dithiobenzoate, stearic acid, zinc stearate, AC, dicumyl peroxide and ZnO in the raw materials of the foam matrix is 100: 0.1: 0.2: 0.4: 2.2: 1.2: 0.8.
3. the conductive foam EVA material of claim 1, wherein the metal precursor is Cu (NO)3)2，HAuCl4，AgNO3，(NH4)2PdCl6，NiCl2One or more of them.
4. The conductive foam EVA material of claim 1, wherein: the reducing agent is one of sodium borohydride, ascorbic acid and formaldehyde.
5. The conductive foam EVA material of claim 1, wherein: the preparation method of the conductive network formed by the metal nanowires dispersed on the surface and in the pores of the foam matrix comprises the following steps: dispersing 1 part by mass of metal precursor and 5 parts by mass of polydopamine in 100 parts by mass of water, soaking 50 parts by mass of foam matrix in the dispersion, adding sodium hydroxide, adjusting the pH value to 10, taking out the foam matrix after full reaction, drying the foam matrix in vacuum, adding excessive reducing agent into the water again, and heating the mixture to 60 ℃ for reaction for 1 hour.
6. The preparation method of the conductive foam EVA material is characterized by comprising the following steps:
1) placing EVA, sodium dithiobenzoate, stearic acid and zinc stearate into a preheated internal mixer, uniformly mixing for 5min at 120 ℃ and 50rpm, then adding AC, dicumyl peroxide and ZnO into the inner cavity of the internal mixer, and uniformly mixing for 10min at 25rpm to obtain a mixture;
2) transferring the mixture obtained in the step 1) to a double-roller open mill while the mixture is hot, continuously mixing for 10-30 min, pressing the materials into 35mm thin sheets, and further cutting the thin sheets into sheets with certain sizes;
3) placing the mixture into a preheated die cavity of a flat vulcanizing machine, carrying out die pressing foaming for 10min under the conditions of 10MPa and 180190 ℃, then taking out the material, and carrying out pressure maintaining and feeding for 12h at room temperature to obtain a foam matrix;
4) dispersing a metal precursor and polydopamine in water, soaking a foam matrix in the dispersion, adding sodium hydroxide, fully reacting, taking out the foam matrix, vacuum drying, adding the foam matrix into the water again, adding a reducing agent, heating to 60 ℃ and reacting for 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347240.8A CN111087678A (en) | 2019-12-24 | 2019-12-24 | Conductive foam EVA material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347240.8A CN111087678A (en) | 2019-12-24 | 2019-12-24 | Conductive foam EVA material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111087678A true CN111087678A (en) | 2020-05-01 |
Family
ID=70397083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911347240.8A Pending CN111087678A (en) | 2019-12-24 | 2019-12-24 | Conductive foam EVA material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111087678A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016306A1 (en) * | 2021-08-10 | 2023-02-16 | 华为技术有限公司 | Conductive elastic connector and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077317A (en) * | 1991-03-08 | 1991-12-31 | Yi Shyu Horng | Electrically conductive closed cell foam of ethylene vinyl acetate copolymer and method of making |
| CN101935017A (en) * | 2010-07-29 | 2011-01-05 | 中国科学院生态环境研究中心 | Method for synthesizing noble metal superfine nanowire water phase and establishing noble metal nanopore membrane by self-precipitation thereof |
| CN103106950A (en) * | 2013-01-10 | 2013-05-15 | 中国航空工业集团公司北京航空材料研究院 | Conductive foam and preparation method thereof |
| CN106366423A (en) * | 2016-08-27 | 2017-02-01 | 福州大学 | Antistatic EVA foamed composite and preparation method thereof |
| CN108752722A (en) * | 2018-05-21 | 2018-11-06 | 福州大学 | A kind of antistatic eva foam composite material and preparation method |
-
2019
- 2019-12-24 CN CN201911347240.8A patent/CN111087678A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077317A (en) * | 1991-03-08 | 1991-12-31 | Yi Shyu Horng | Electrically conductive closed cell foam of ethylene vinyl acetate copolymer and method of making |
| CN101935017A (en) * | 2010-07-29 | 2011-01-05 | 中国科学院生态环境研究中心 | Method for synthesizing noble metal superfine nanowire water phase and establishing noble metal nanopore membrane by self-precipitation thereof |
| CN103106950A (en) * | 2013-01-10 | 2013-05-15 | 中国航空工业集团公司北京航空材料研究院 | Conductive foam and preparation method thereof |
| CN106366423A (en) * | 2016-08-27 | 2017-02-01 | 福州大学 | Antistatic EVA foamed composite and preparation method thereof |
| CN108752722A (en) * | 2018-05-21 | 2018-11-06 | 福州大学 | A kind of antistatic eva foam composite material and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 朱春华: "聚多巴胺表面改性制备弹性导电复合材料及在导电通路中的应用", 《2016年中国工程物理研究院科技年报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023016306A1 (en) * | 2021-08-10 | 2023-02-16 | 华为技术有限公司 | Conductive elastic connector and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101358004B (en) | IXPE electron radiation on crosslinking polyethylene conductive foam and preparation method thereof | |
| CN103535123B (en) | Electromagnetic shielding gasket and manufacture method thereof | |
| US20140116661A1 (en) | Thermal Pad, Method for Fabricating Thermal Pad, Heat Dissipating Apparatus and Electronic Device | |
| CN110760897B (en) | Copper-based graphene heat conduction and dissipation film and preparation method thereof | |
| CN114133740B (en) | Heat-conducting wave-absorbing silicone rubber composite material and preparation method thereof | |
| CN102602076B (en) | Heat conductive insulation sheet and structural adhesive | |
| CN102612301B (en) | Heat conduction device and manufacturing method thereof | |
| CN111087678A (en) | Conductive foam EVA material and preparation method thereof | |
| CN207958226U (en) | A kind of heat-conducting glue band | |
| CN112060724A (en) | Flexible low-frequency wave absorbing plate and preparation method thereof | |
| CN103333502A (en) | Ultrathin heat conductive silicon sheet and preparation method thereof | |
| JP2004179633A (en) | Electromagnetic wave absorbing body and method for manufacturing the same | |
| KR20170035571A (en) | Improved Graphene ink composition and manufacturing method | |
| Lan et al. | Fabrication and electromagnetic interference shielding effectiveness of polymeric composites filled with silver-coated microorganism cells | |
| CN112708274A (en) | Heat-conducting insulating polyimide film and preparation method thereof | |
| CN113979428B (en) | Preparation method of heat-conducting wave-absorbing composite film and heat-conducting wave-absorbing composite film | |
| CN110591218A (en) | Electromagnetic shielding cable material and preparation method thereof | |
| CN112210766A (en) | Carbon nanotube foam material with electromagnetic shielding performance and preparation method and application thereof | |
| CN106317847B (en) | Conductive foam, conductive foam body and preparation method and application thereof | |
| CN111518483B (en) | Single-sided graphene heat dissipation film and preparation method thereof | |
| CN111526695B (en) | Double-sided graphene heat dissipation film and preparation method thereof | |
| CN203866237U (en) | Novel soaking and radiating rubber belt | |
| CN113462003A (en) | Foaming agent compound for low-temperature decomposition of expanded rubber and preparation method thereof | |
| CN107146878A (en) | A kind of nickel system battery pole piece, nickel system battery and preparation method thereof | |
| CN103881395A (en) | Fireproof cable sealing module with electromagnetic shielding performance and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200501 |
|
| RJ01 | Rejection of invention patent application after publication |