CN102516763A - Electromagnetic wave-shielding plastic - Google Patents
Electromagnetic wave-shielding plastic Download PDFInfo
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- CN102516763A CN102516763A CN2011104116840A CN201110411684A CN102516763A CN 102516763 A CN102516763 A CN 102516763A CN 2011104116840 A CN2011104116840 A CN 2011104116840A CN 201110411684 A CN201110411684 A CN 201110411684A CN 102516763 A CN102516763 A CN 102516763A
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- carbon fibers
- shielding plastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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Abstract
The invention discloses electromagnetic wave-shielding plastic. The electromagnetic wave-shielding plastic comprises: by mass, 60 to 70 parts of nylon 66, 30 to 50 parts of nickel-coated carbon fibers, 10 to 15 parts of carbon fibers, 15 to 20 parts of aluminum powder and 10 to 20 parts of graphite powder. The electromagnetic wave-shielding plastic can be utilized as a material of an electronic product housing and for preventing electromagnetic wave leakage. The electromagnetic wave-shielding plastic has low electrical resistivity and an electromagnetic wave shielding effect of 35 to 60dB.
Description
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Technical field
The invention belongs to the conductive plastics technical field, relate in particular to a kind of shielding electromagnetic wave plastics.
Background technology
The thomel material that has been a kind of HS, high-modulus high score not only have electroconductibility, and the order over-all properties is good, compares with other conductive filler material, has advantages such as density is little, mechanical property good, the material conductivity is lasting.The capability of electromagnetic shielding Bian of thomel will come from self good electrical conductivity, and its specific conductivity increases with the rising of thermal treatment temp.Therefore; The electric conductivity of the thomel that obtains through pyroprocessing oneself progressively near conductor; Has higher capability of electromagnetic shielding, as reaching 37 dB through (PA N) base carbon fibre of the polyaniline after the pyroprocessing and the effectiveness of shielding of the compound matrix material that makes of epoxy resin when frequency is 500 MHz.Though thomel has the natural characteristics of carbon materials and the electroconductibility of metallic substance; But make conductive plastics have the favorable conductive effect; Need to add the conductive carbon fibre than high filler loading capacity, this can have a negative impact to the physical strength and the moulding processability of conductive plastics.In recent years, thomel is coated with proper metal, can improve its electroconductibility and electromagnetic wave shielding, reduce its loading level in conductive plastics.Improve the performance of conductive plastics, oneself becomes the research focus.Oneself develops a kind of nickel-coated carbon fibers of high conductivity like the U.S., and the volume(tric)fraction of its filling is 12%-67%, and density is 1. 27～1. 64 g/ cm3, and effectiveness of shielding is 40～85 dB, can be used for making the conductive plastics with capability of electromagnetic shielding.
Summary of the invention
The technical problem that solves:The present invention aims to provide a kind of shielding electromagnetic wave plastics, and shielding electromagnetic wave plastics provided by the invention can be used for electronic product casing, is used to prevent that hertzian wave from leaking.
Technical scheme:The shielding electromagnetic wave plastics is characterized in that consisting of by proportion by weight: 66 60～70 parts of nylon, 30～50 parts of nickel-coated carbon fibers, 10～15 parts on thomel, 15～20 parts of aluminium powders, 10～20 parts of Graphite Powder 99s.
Above-mentioned nylon 66 is preferably 65 parts.
Above-mentioned nickel-coated carbon fibers is preferably 30 parts.
Above-mentioned Graphite Powder 99 is preferably 20 parts.
Beneficial effect:Shielding electromagnetic wave plastics provided by the invention can be used for electronic product casing, are used to prevent that hertzian wave from leaking.The resistivity of this material is low, and hertzian wave Isolated Shield effect can reach 35～60dB.
Embodiment
Embodiment 1
The shielding electromagnetic wave plastics is characterized in that consisting of by proportion by weight: 66 70 parts of nylon, 50 parts of nickel-coated carbon fibers, 10 parts on thomel, 20 parts of aluminium powders, 20 parts of Graphite Powder 99s.
Press above-mentioned prescription, add nickel-coated carbon fibers in the nylon 66 and mix, and then leftover materials are added in 120 degrees centigrade of following insulations 2 hours.
Compare with the commercially available prod, shielding electromagnetic wave plastics provided by the invention can be used for the communication equipment shell, are used to prevent that hertzian wave from leaking.The resistivity of this material is low, and hertzian wave Isolated Shield effect can reach 40dB.
Embodiment 2
The shielding electromagnetic wave plastics is characterized in that consisting of by proportion by weight: 66 65 parts of nylon, 40 parts of nickel-coated carbon fibers, 15 parts on thomel, 20 parts of aluminium powders, 10 parts of Graphite Powder 99s.
Press above-mentioned prescription, add nickel-coated carbon fibers in the nylon 66 and mix, and then leftover materials are added in 120 degrees centigrade of following insulations 3 hours.
Compare with the commercially available prod, shielding electromagnetic wave plastics provided by the invention can be used for microwave oven shell, are used to prevent that hertzian wave from leaking.The resistivity of this material is low, and hertzian wave Isolated Shield effect can reach 60dB.
Not relating to all identical with the prior art prior art that maybe can adopt of part in the literary composition realizes.The above is the preferred embodiments of the present invention, but the present invention also is not limited to above only embodiment, on embodiment, does improvement slightly and also will be regarded as protection scope of the present invention.
Claims (4)
1. the shielding electromagnetic wave plastics is characterized in that consisting of by proportion by weight: 66 60～70 parts of nylon, 30～50 parts of nickel-coated carbon fibers, 10～15 parts on thomel, 15～20 parts of aluminium powders, 10～20 parts of Graphite Powder 99s.
2. shielding electromagnetic wave plastics according to claim 1 is characterized in that said nylon 66 is 65 parts.
3. shielding electromagnetic wave plastics according to claim 1 is characterized in that said nickel-coated carbon fibers is 30 parts.
4. shielding electromagnetic wave plastics according to claim 1 is characterized in that 20 parts of said Graphite Powder 99s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104116840A CN102516763A (en) | 2011-12-12 | 2011-12-12 | Electromagnetic wave-shielding plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104116840A CN102516763A (en) | 2011-12-12 | 2011-12-12 | Electromagnetic wave-shielding plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102516763A true CN102516763A (en) | 2012-06-27 |
Family
ID=46287851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104116840A Pending CN102516763A (en) | 2011-12-12 | 2011-12-12 | Electromagnetic wave-shielding plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102516763A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384177A (en) * | 2018-03-21 | 2018-08-10 | 成都工业学院 | One kind four phases pair, which exceed, oozes electromagnetic shielding material and preparation method thereof |
| CN111269560A (en) * | 2020-03-19 | 2020-06-12 | 中北大学 | Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container and preparation method thereof |
| CN112154307A (en) * | 2019-11-04 | 2020-12-29 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, sprinkler and movable platform |
| CN114806147A (en) * | 2022-03-25 | 2022-07-29 | 金发科技股份有限公司 | Heat-conducting and electromagnetic-shielding nylon composition and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070056769A1 (en) * | 2005-09-12 | 2007-03-15 | Severance Christopher L | Composite polymeric material for EMI shielding |
| CN101717577A (en) * | 2009-11-03 | 2010-06-02 | 苏州市科创聚合物有限公司 | Electromagnetic shielding nylon 66 material and preparation process thereof |
| CN101875779A (en) * | 2009-12-21 | 2010-11-03 | 扬州大学 | Polyamide/nano expanded graphite/carbon fiber high-strength conducting composite material and preparation method thereof |
-
2011
- 2011-12-12 CN CN2011104116840A patent/CN102516763A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070056769A1 (en) * | 2005-09-12 | 2007-03-15 | Severance Christopher L | Composite polymeric material for EMI shielding |
| CN101717577A (en) * | 2009-11-03 | 2010-06-02 | 苏州市科创聚合物有限公司 | Electromagnetic shielding nylon 66 material and preparation process thereof |
| CN101875779A (en) * | 2009-12-21 | 2010-11-03 | 扬州大学 | Polyamide/nano expanded graphite/carbon fiber high-strength conducting composite material and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384177A (en) * | 2018-03-21 | 2018-08-10 | 成都工业学院 | One kind four phases pair, which exceed, oozes electromagnetic shielding material and preparation method thereof |
| CN108384177B (en) * | 2018-03-21 | 2020-06-23 | 成都工业学院 | Four-phase double-percolation electromagnetic shielding material and preparation method thereof |
| CN112154307A (en) * | 2019-11-04 | 2020-12-29 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, sprinkler and movable platform |
| WO2021087705A1 (en) * | 2019-11-04 | 2021-05-14 | 深圳市大疆创新科技有限公司 | Electromagnetic flowmeter, spraying apparatus, and movable platform |
| CN111269560A (en) * | 2020-03-19 | 2020-06-12 | 中北大学 | Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container and preparation method thereof |
| CN111269560B (en) * | 2020-03-19 | 2022-03-29 | 中北大学 | Nylon 6/expanded graphite/nickel composite material for electromagnetic shielding container and preparation method thereof |
| CN114806147A (en) * | 2022-03-25 | 2022-07-29 | 金发科技股份有限公司 | Heat-conducting and electromagnetic-shielding nylon composition and preparation method and application thereof |
| CN114806147B (en) * | 2022-03-25 | 2023-09-26 | 金发科技股份有限公司 | Heat-conducting and electromagnetic-shielding nylon composition and preparation method and application thereof |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120627 |