CN108504027A - A kind of electromagnetic shielding material and preparation method thereof - Google Patents
A kind of electromagnetic shielding material and preparation method thereof Download PDFInfo
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- CN108504027A CN108504027A CN201810329771.3A CN201810329771A CN108504027A CN 108504027 A CN108504027 A CN 108504027A CN 201810329771 A CN201810329771 A CN 201810329771A CN 108504027 A CN108504027 A CN 108504027A
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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
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0083—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive non-fibrous particles embedded in an electrically insulating supporting structure, e.g. powder, flakes, whiskers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
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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
- C08K2201/001—Conductive additives
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- 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
- 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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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
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Abstract
A kind of electromagnetic shielding material of present invention offer and preparation method thereof, which is prepared by the raw material of following parts by weight：POM, EVA, neoprene, polyaniline, conductive filler, aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate, methyl-silicone oil, ethyl alcohol, coupling agent.The shielding properties of electromagnetic shielding material prepared by the present invention is excellent, and intensity is high, and comprehensive performance is excellent, in addition, the raw material of the present invention is easy to get, preparation method is simple, is suitble to industrially scalable metaplasia production.
Description
The application is application No. is 201610372985X, and the applying date is on May 31st, 2016, and invention and created name is
The divisional application of the patent of " a kind of power-supply device electromagnetic shielding material and preparation method thereof ".
Technical field
The present invention relates to magnetic shielding material fields, and in particular to a kind of power-supply device electromagnetic shielding material and its preparation side
Method.
Background technology
It is become increasingly popular with electric, information technology, people are exposed to intensity, time and the complexity of electromagnetic radiation
It is increasing.Electromagnetic radiation has become the fourth-largest pollution after atmosphere pollution, water pollution and noise pollution.With people couple
The increasingly attention of health resists electronics, power-supply device product for the various harm for reducing and avoiding electromagnetic radiation to bring
Capability of electromagnetic shielding requires higher and higher.
Electromagnetic shielding material can play external interference electromagnetic wave and inside electromagnetic wave certain absorption, reflection, low
The effect of energy consumption, therefore electromagnetic shielding material plays electronics, power-supply device the function of certain weakening interference.However as
The continuous improvement of power-supply device especially Switching Power Supply, switching frequency and switching speed, the requirement for fighting electromagnetic shielding are also more next
It is stringenter, however the anti-electromagnetic interference capability of common electromagnetic shielding material or shield cannot be satisfied this be increasingly stringenter
Application demand.Therefore it is badly in need of developing that a kind of shielding properties is excellent, low-cost electromagnetic shielding material.
Invention content
The purpose of the present invention is to provide a kind of power-supply device electromagnetic shielding materials and preparation method thereof.
In order to achieve the object of the present invention, the present invention provides a kind of power-supply device electromagnetic shielding material, by following weight
The raw material of number is prepared：40-70 parts of POM, 35-50 parts of EVA, 18-30 parts of neoprene, 12-24 parts of polyaniline, conduction
10-20 parts of filler, 5-12 parts of aluminum sulfate, 4-8 parts of decabromodiphenyl oxide, 8-14 parts of diethyl phthalate, methyl-silicone oil 5-10
Part, 28-45 parts of ethyl alcohol, 2-5 parts of coupling agent；
The conductive filler is the mixture of molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder.
Preferably, the conductive filler is that molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder are pressed
Weight ratio is 4:1:2:3:1 mixture.
Preferably, the coupling agent is dodecyltrimethoxysilane, perfluoro decyl trichlorosilane and distearyl acyl-oxygen
At least one of isopropoxy Aluminate.
Preferably, the power-supply device electromagnetic shielding material, is prepared by the raw material of following parts by weight：POM
57 parts, it is 38 parts of EVA, 21 parts of neoprene, 18 parts of polyaniline, 16 parts of conductive filler, 9 parts of aluminum sulfate, 5 parts of decabromodiphenyl oxide, adjacent
10 parts of diethyl phthalate, 7 parts of methyl-silicone oil, 38 parts of ethyl alcohol, 3 parts of coupling agent.
The preparation method of power-supply device electromagnetic shielding material described above, which is characterized in that include the following steps：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, is added
Aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 150-160 DEG C, 170-185
DEG C, 190-210 DEG C, 220-250 DEG C, screw speed 40-100 turns/min to get.
Preferably, the areas step 3) Zhong Ge extrusion temperature is 158 DEG C, 179 DEG C, 204 DEG C, 243 DEG C, screw speed
40-100 turns/min.
Preferably, the parts by weight of each raw material are：57 parts of POM, 38 parts of EVA, 21 parts of neoprene, polyaniline 18
Part, 16 parts of conductive filler, 9 parts of aluminum sulfate, 5 parts of decabromodiphenyl oxide, 10 parts of diethyl phthalate, 7 parts of methyl-silicone oil, ethyl alcohol
38 parts, 3 parts of coupling agent.
Beneficial effects of the present invention are：
The shielding properties of electromagnetic shielding material prepared by the present invention is excellent, in 30MHz~1.5GHz frequency ranges, shielding
Efficiency can reach 55-65dB, and tensile strength is more than 40MPa, and impact strength is higher than 18kJ/m2, in addition, the raw material of the present invention
It is easy to get, preparation method is simple, is suitble to industrially scalable metaplasia production.
Specific implementation mode
The following describes the present invention further through the description of specific embodiments, but this is not the limit to the present invention
System, those skilled in the art's basic thought according to the present invention can make various modifications or improvements, but without departing from this
The basic thought of invention, is all within the scope of the present invention.
Embodiment 1
A kind of power-supply device electromagnetic shielding material, is prepared by the raw material of following parts by weight：40 parts of POM, EVA
35 parts, 18 parts of neoprene, 12 parts of polyaniline, 10 parts of conductive filler, 5 parts of aluminum sulfate, 4 parts of decabromodiphenyl oxide, phthalic acid
8 parts of diethylester, 5 parts of methyl-silicone oil, 28 parts of ethyl alcohol, 2 parts of coupling agent；
The conductive filler is that molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder are by weight
4:1:2:3:1 mixture.The coupling agent is dodecyltrimethoxysilane.
The preparation method of power-supply device electromagnetic shielding material described above, which is characterized in that include the following steps：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, is added
Aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 150 DEG C, 170 DEG C, 190 DEG C,
220,40 turns/min of screw speed to get.
Embodiment 2
A kind of power-supply device electromagnetic shielding material, is prepared by the raw material of following parts by weight：55 parts of POM, EVA
42 parts, 24 parts of neoprene, 18 parts of polyaniline, 15 parts of conductive filler, 8 parts of aluminum sulfate, 6 parts of decabromodiphenyl oxide, phthalic acid
11 parts of diethylester, 7 parts of methyl-silicone oil, 35 parts of ethyl alcohol, 3.5 parts of coupling agent；
The conductive filler is that molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder are by weight
4:1:2:3:1 mixture.The coupling agent is distearyl acyl-oxygen aluminum isopropoxide acid esters.
The preparation method of power-supply device electromagnetic shielding material described above, which is characterized in that include the following steps：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, is added
Aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 155 DEG C, 177 DEG C, 200 DEG C,
235 DEG C, 70 turns/min of screw speed to get.
Embodiment 3
A kind of power-supply device electromagnetic shielding material, is prepared by the raw material of following parts by weight：70 parts of POM,
EVA50 parts, 30 parts of neoprene, 24 parts of polyaniline, 20 parts of conductive filler, 12 parts of aluminum sulfate, 8 parts of decabromodiphenyl oxide, adjacent benzene two
14 parts of formic acid diethylester, 10 parts of methyl-silicone oil, 45 parts of ethyl alcohol, 5 parts of coupling agent；
The conductive filler is that molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder are by weight
4:1:2:3:1 mixture.The coupling agent is mixed in perfluoro decyl trichlorosilane and distearyl acyl-oxygen aluminum isopropoxide acid esters
Object is closed, the weight ratio of the two is 4:3.
The preparation method of power-supply device electromagnetic shielding material described above, which is characterized in that include the following steps：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, is added
Aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 160 DEG C, 185 DEG C, 210 DEG C,
250 DEG C, 100 turns/min of screw speed to get.
Embodiment 4
A kind of power-supply device electromagnetic shielding material, is prepared by the raw material of following parts by weight：57 parts of POM, EVA
38 parts, 21 parts of neoprene, 18 parts of polyaniline, 16 parts of conductive filler, 9 parts of aluminum sulfate, 5 parts of decabromodiphenyl oxide, phthalic acid
10 parts of diethylester, 7 parts of methyl-silicone oil, 38 parts of ethyl alcohol, 3 parts of coupling agent；
The conductive filler is that molybdenum powder, nanometer gadolinium sesquioxide, zinc powder, aramid fiber and indium-tin oxide powder are by weight
4:1:2:3:1 mixture.The coupling agent is dodecyltrimethoxysilane, perfluoro decyl trichlorosilane and distearyl acyl-oxygen
The mixture of isopropoxy Aluminate, and the weight ratio of three is 2:1:4.
The preparation method of power-supply device electromagnetic shielding material described above, which is characterized in that include the following steps：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, is added
Aluminum sulfate, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 158 DEG C, 179 DEG C, 204 DEG C,
243 DEG C, screw speed 40-100 turns/min to get.
Performance test
The embodiment 1-4 electromagnetic shielding materials prepared are tested for the property, test result is：
It can be obtained from upper table, the shielding properties of electromagnetic shielding material prepared by the present invention is excellent, in 30MHz~1.5GHz
In frequency range, shield effectiveness can reach 55-65dB, and tensile strength is more than 40MPa, and impact strength is higher than 18kJ/m2.
Claims (10)
1. a kind of electromagnetic shielding material, which is characterized in that be prepared by the raw material including following parts by weight：POM 40-70
Part, 35-50 parts of EVA, 18-30 parts of neoprene, 12-24 parts of polyaniline, 10-20 parts of conductive filler, 5-12 parts of aluminum sulfate, ten
4-8 parts of bromo biphenyl ether, 8-14 parts of diethyl phthalate, 5-10 parts of methyl-silicone oil, 28-45 parts of ethyl alcohol, 2-5 parts of coupling agent.
2. electromagnetic shielding material according to claim 1, which is characterized in that the conductive filler is molybdenum powder, three oxygen of nanometer
It is 4 to change two gadoliniums, zinc powder, aramid fiber and indium-tin oxide powder by weight:1:2:3:1 mixture.
3. electromagnetic shielding material according to claim 1, which is characterized in that the coupling agent is dodecyl trimethoxy
At least one of silane, perfluoro decyl trichlorosilane and distearyl acyl-oxygen aluminum isopropoxide acid esters.
4. electromagnetic shielding material according to claim 3, which is characterized in that the coupling agent is perfluoro decyl trichlorosilane
Weight ratio with the mixture in distearyl acyl-oxygen aluminum isopropoxide acid esters, the two is 4:3.
5. electromagnetic shielding material according to claim 3, which is characterized in that the coupling agent is dodecyl trimethoxy
The mixture of silane, perfluoro decyl trichlorosilane and distearyl acyl-oxygen aluminum isopropoxide acid esters, and the weight ratio of three is 2:1:
4。
6. electromagnetic shielding material according to claim 5, which is characterized in that by the raw material preparation of following parts by weight
At：57 parts of POM, 38 parts of EVA, 21 parts of neoprene, 18 parts of polyaniline, 16 parts of conductive filler, 9 parts of aluminum sulfate, decabromodiphenyl
5 parts of ether, 10 parts of diethyl phthalate, 7 parts of methyl-silicone oil, 38 parts of ethyl alcohol, 3 parts of coupling agent.
7. electromagnetic shielding material according to claim 3, which is characterized in that by the raw material preparation of following parts by weight
At：55 parts of POM, 42 parts of EVA, 24 parts of neoprene, 18 parts of polyaniline, 15 parts of conductive filler, 8 parts of aluminum sulfate, decabromodiphenyl
6 parts of ether, 11 parts of diethyl phthalate, 7 parts of methyl-silicone oil, 35 parts of ethyl alcohol, 3.5 parts of coupling agent.
8. according to the preparation method of any electromagnetic shielding materials of claim 1-7, which is characterized in that including following step
Suddenly：
1) 90min is mixed at 86 DEG C in conductive filler, methyl-silicone oil, coupling agent and ethyl alcohol；
2) POM, EVA, polyaniline, neoprene are added, 30min is stirred at 110 DEG C, then is cooled to 55 DEG C, sulfuric acid is added
Aluminium, decabromodiphenyl oxide, diethyl phthalate continue to stir 100min, obtain mixture；
3) above-mentioned mixture is added into double screw extruder, the extrusion temperature in each area is 150-160 DEG C, 170-185 DEG C,
190-210 DEG C, 220-250 DEG C, screw speed 40-100 turns/min to get.
9. the preparation method of electromagnetic shielding material according to claim 8, which is characterized in that the parts by weight of each raw material
Number is：57 parts of POM, 38 parts of EVA, 21 parts of neoprene, 18 parts of polyaniline, 16 parts of conductive filler, 9 parts of aluminum sulfate, ten bromines connection
5 parts of phenylate, 10 parts of diethyl phthalate, 7 parts of methyl-silicone oil, 38 parts of ethyl alcohol, 3 parts of coupling agent.
10. the preparation method of electromagnetic shielding material according to claim 9, which is characterized in that each in the step 3)
Area's extrusion temperature is 158 DEG C, 179 DEG C, 204 DEG C, 243 DEG C, and screw speed 40-100 turns/min.
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| CN201810329771.3A CN108504027A (en) | 2016-05-31 | 2016-05-31 | A kind of electromagnetic shielding material and preparation method thereof |
| CN201610372985.XA CN106009482B (en) | 2016-05-31 | 2016-05-31 | A kind of power-supply device electromagnetic shielding material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110028753A (en) * | 2019-04-08 | 2019-07-19 | 苏州威瑞成新材料有限公司 | A kind of elastic body toughening polyformaldehyde material |
| CN113072794A (en) * | 2021-05-12 | 2021-07-06 | 深圳和畅电磁材料有限公司 | Preparation method of electromagnetic shielding material used in high-heat environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108440897A (en) * | 2018-04-26 | 2018-08-24 | 合肥酷睿网络科技有限公司 | A kind of single phase poaer supply transformer |
| CN110041657A (en) * | 2019-04-08 | 2019-07-23 | 苏州威瑞成新材料有限公司 | A kind of wear-resisting electromagnetic shielding modified polyformaldehyde material |
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| CN110028753A (en) * | 2019-04-08 | 2019-07-19 | 苏州威瑞成新材料有限公司 | A kind of elastic body toughening polyformaldehyde material |
| CN113072794A (en) * | 2021-05-12 | 2021-07-06 | 深圳和畅电磁材料有限公司 | Preparation method of electromagnetic shielding material used in high-heat environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106009482A (en) | 2016-10-12 |
| CN106009482B (en) | 2018-05-01 |
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Application publication date: 20180907 |