CN110213951A - A kind of electromagnetic shielding foam and its preparation process - Google Patents
A kind of electromagnetic shielding foam and its preparation process Download PDFInfo
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- CN110213951A CN110213951A CN201910397557.6A CN201910397557A CN110213951A CN 110213951 A CN110213951 A CN 110213951A CN 201910397557 A CN201910397557 A CN 201910397557A CN 110213951 A CN110213951 A CN 110213951A
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- defoaming agent
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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
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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
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- C08K2201/01—Magnetic additives
-
- 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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a kind of electromagnetic shielding foams, which is characterized in that fills colloid including foamed aluminium supporting base material and the mixing being cast in the foamed aluminium supporting base material；The mixing filling colloid is grouped as by each group of following parts by weight: 70 ~ 90 parts of liquid heat conductive silica gel, 10 ~ 30 parts of radio-radar absorber, 1 ~ 5 part of vulcanizing agent, 1 ~ 5 part of chain extender, 1 ~ 5 part of defoaming agent.The invention also discloses the preparation processes of the electromagnetic shielding foam.Electromagnetic shielding foam of the present invention has the advantages that good comprehensive performance, damping and battery shielding excellent.
Description
Technical field
The invention belongs to foam technology fields, are related to a kind of electronic equipment conducting foam more particularly to a kind of electricity
Magnetic screen foam and its preparation process.
Background technique
With the fast development of current electronics industry, various electronic equipments emerge one after another, they are provided to people's lives
Great convenience, while also bringing serious electromagnetic pollution.They not only endanger the health of people, also to electronic equipment
Information security and the system stability of surrounding devices constitute a threat to.Electromagnetic compatibility (EMC) problem already becomes in electronic equipment
The problem of production firm has to take into account that.
In specific EMC design, fitting conductive metal layer, example copper foil, aluminium foil etc. are generallyd use, to shielding electronic component
The electromagnetic wave generated when work.Though these traditional battery shielding materials have good electromagnet shield effect, due to certainly
Body weight is big, can not adapt to current lightweight design requirement.Conducting foam is a kind of novel electromagnetic shielding material, mainly includes
Common conductive foam, nickel-clad copper conducting foam, gold-plated conducting foam, plating carbonaceous conductive foam, the types such as tin plating conducting foam.It compares
In the mode of fitting metal foil, on the one hand foam structure can be used for shielding electromagnetic wave, on the other hand, with excellent anti-impact
The characteristic of hitting property and warp resistance can play a protective role to electronic component, while still have good obtain after bending repeatedly
Effectiveness has larger development potentiality in the following folding electronic device and Curved screen field.
Currently, electromagnetic shielding foam mainly uses three-dimensional porous polyurethane sponge for substrate, this substrate is three-dimensional porous
Structure has biggish specific surface area, but with the fast development of electronic technology, electromagnetic shielding material ultrathin is required, with
And the requirement of electromagnetic shielding material sheet resistance and vertical resistor feature is higher and higher.The metal foil layer of existing electromagnetic shielding foam
Conducting resinl between foam be influenced by temperature it is larger, under high temperature poor heat radiation environment its be bonded stickiness it is inadequate, be easy
Gap is now loosened and generated, its whole shield effectiveness, the shielding requirements being unable to satisfy under complex electromagnetic environment are influenced.
Chinese utility model CN201473483U, which is provided, a kind of is attached to manufactured gold on polyurethane foam for copper and mickel
Belong to conducting foam, while meeting it with effectiveness, avoid because single copper facing, oxidisability and corrosion resistance compared with
Low the case where causing reduced performance, but the utility model has the following problems: and 1. operating procedure very complicateds need to carry out multiple electricity
Plating operation can just be such that two kinds of different metals are in turn attached on polyurethane foam respectively；2. copper and mickel price is higher, conduction is steeped
The cost of cotton can not control effectively；3. the porosity of foam is high, the electric conductivity and thermal conductivity that will lead to integral material are
It reduces, on the one hand influences product effectiveness, accumulation of heat is on the other hand likely to result in, to the normal work of electronic component
It has an impact；4. a large amount of copper and mickel will lead to overall structure weighting, may be applied to have an impact；5. coating is long
Between using there is the risk that falls off.
Therefore, develop it is a kind of with excellent damping, battery shielding character, and comprehensive performance it is good electromagnetic shielding foam it is aobvious
It obtains particularly important.
Summary of the invention
A kind of electromagnetic shielding foam and its preparation process are provided the invention aims to overcome the deficiencies in the prior art,
This electromagnetic shielding foam preparation process is simple to operation, and preparation cost is cheap, and the battery shielding foam being prepared has comprehensive
The advantages of closing excellent performance, damping and battery shielding excellent.
In order to achieve the above objectives, the technical scheme adopted by the invention is as follows: a kind of electromagnetic shielding foam, including foamed aluminium branch
Colloid is filled in support group material and the mixing being cast in the foamed aluminium supporting base material；The mixing filling colloid is by following parts by weight
Several each groups are grouped as: 70~90 parts of liquid heat conductive silica gel, 10~30 parts of radio-radar absorber, 1~5 part of vulcanizing agent, chain extender 1
~5 parts, 1~5 part of defoaming agent.
Preferably, the foamed aluminium is analogous to the special metal material containing foam stomata of polyurethane foam, can lead to
It crosses and adds foaming agent into molten metal aluminium to be made.
Further, the foamed aluminium is preferably pore size in 0.1mm~10mm, and porosity is between 80~98%
Foamed aluminium.
Preferably, the liquid heat conductive silica gel selects the organic casting glue of one-component high thermal conductivity, and viscosity is low under room temperature, can cooperate
Vulcanizing agent handles (example: Dow DOWSIL through 80 DEG C or more hot settingsTM3-6371, JRFT-E003 etc.).
Further, the radio-radar absorber refers to the electromagnetic wave by absorbing or substantially decrease projects its surface
Energy and a kind of material for being converted into thermal energy, Fe based alloy micro mist is common radio-radar absorber.
Preferably, the battery wave absorbent is preferably Fe-Si-Cr alloy powder, with excellent magnetic property, simultaneously
The inoxidizability and corrosion resistance of alloy can be improved in the addition of Cr element
Preferably, the battery wave absorbent D50 is 10-30um.
Further, the vulcanizing agent is organic peroxide sulfuration system, including dibenzoyl peroxide, peroxidating two
Any one or a few in the new enanthic acid 1,1- dimethyl -3- hydroxy butyl ester of second propyl benzene, peroxide is with the mixing of arbitrary proportion.
Preferably, the chain extender is the double pyrrolidones silane of methyl ethylene.
Preferably, the defoaming agent is polyethers defoaming agent, including GP type defoaming agent, GPE type defoaming agent, GPES type defoam
Any one or a few in agent is with the mixing of arbitrary proportion.
Further, the preparation process of the electromagnetic shielding foam, includes the following steps:
Step S1, radio-radar absorber, vulcanizing agent, chain extender, defoaming agent and liquid heat conductive silica gel are put in proportion into and are stirred
It mixes in kettle and is uniformly mixed, stir 1h, mixing speed is 100~200r/min, obtains mixing filling colloid；
Step S2, foamed aluminium is fixed in mold first, then colloid is filled into the mixing prepared by step S1
It pours into, it is made to be sufficient filling with foamed aluminium；
Step S3, mold is heated, is warming up to 80~150 DEG C, then keeps the temperature 30min；
Step S4, temperature control setting is closed, room temperature, overall structure solidification are cooled to；
Step S5, the product after solidifying to overall structure is accordingly cut, and finished product is obtained.
Due to the above technical solutions, the present invention has the following advantages over the prior art: electricity provided by the invention
Magnetic screen foam has more excellent shock resistance compared to conventional conductive foam, is inhaled by heat conductive silica gel and electromagnetic wave
The filling for receiving agent, further improves its heating conduction and effectiveness.The design of foamed aluminium is so that overall structure simultaneously
Merrily and lightheartedly, additional weight will not be increased for electronic equipment, secondly, the inoxidizability and corrosion resistance of product are also compared to conventional metals
Foam is obviously improved.
Specific embodiment
The present invention provides a kind of electromagnetic shielding foam, the foam by foamed aluminium, liquid heat conductive silica gel, radio-radar absorber and
Part functionalities adjuvant component is constituted.Foamed aluminium is played a supporting role in overall structure, heat conductive silica gel, radio-radar absorber and its
The mixing filling colloid of his functional aid composition is heated and after mixing evenly, is poured on foam constructed of aluminium, to be cooled solid
Target product can be obtained after change.The foamed aluminium is analogous to the specialty metal material containing foam stomata of polyurethane foam
Material, can be made by adding special foaming agent into molten metal, compared to carrying out plating metal on polyurethane foam again
Mode avoids the risk that coating falls off.Secondly foamed aluminium light weight, and there are the characteristics such as excellent damping, electromagnetic wave absorption,
Application potential in electronic equipment is bigger, and the preferred pore size control of foam constructed of aluminium used in the invention patent is in 0.1mm
~10mm, porosity is 80~98%；
Further, colloid is filled in the mixing, and formula composition and specific gravity number are as follows: liquid heat conductive silica gel 70
~90 parts, 10~30 parts of radio-radar absorber, 1-5 parts of vulcanizing agent, 1-5 parts of chain extender, 1-5 parts of defoaming agent.The liquid heat conductive
Silica gel selects the organic casting glue of one-component high thermal conductivity, and viscosity is low under room temperature, can cooperate vulcanizing agent through 80 DEG C or more hot settings at
Reason.The radio-radar absorber, which refers to through absorption or substantially weakens, to be projected the electromagnetic wave energy on its surface and is converted
For a kind of material of thermal energy, Fe based alloy micro mist is common radio-radar absorber, the preferred Fe-Si-Cr alloy powder of this patent,
It is with excellent magnetic property, while the inoxidizability and corrosion resistance of alloy can be improved in the addition of Cr element, and preferably D50 exists
10-30um.Organic peroxide sulfuration system can be used in the vulcanizing agent, alternative to have dibenzoyl peroxide, peroxide
Change diethyl propyl benzene, the new enanthic acid 1,1- dimethyl -3- hydroxy butyl ester of peroxide.The chain extender is using the double pyrrolidones silicon of methyl ethylene
Alkane.The defoaming agent preferred, polyethers class defoaming agent has the spies such as the foam inhibition time is long, effect is good, antifoaming speed is fast, thermal stability is good
Point.Example GP type defoaming agent, GPE type defoaming agent, GPES type defoaming agent.
Further, the preparation process of the electromagnetic shielding foam, includes the following steps:
1. radio-radar absorber is put in proportion into stirred tank and is uniformly mixed with heat conductive silica gel and other functional aids,
Stir 1h, 100~200r/min of revolving speed；
2. foamed aluminium is fixed in mold, the mixing filling colloid that upper step obtains is poured into, it is made to be sufficient filling with foam
Aluminium；
3. a pair grinding tool is warming up to 80~150 DEG C, 30min is kept the temperature；
4. closing temperature control setting, it is cooled to room temperature, overall structure solidification；
5. pair institute's consolidated structures are accordingly cut, target product can be obtained.
Compared to conventional conductive foam, while the advantage of the invention patent is to guarantee its excellent impact resistance, lead to
The filling for crossing heat conductive silica gel and radio-radar absorber further improves its heating conduction and effectiveness.Foam simultaneously
The design of aluminium will not increase additional weight for electronic equipment so that overall structure is slim and graceful.Secondly, the inoxidizability of product and anti-corruption
Corrosion is also promoted compared to conventional metals foam.
It is described in detail below in conjunction with to the preferred embodiment of the invention.
Embodiment 1
Embodiment 1 provides a kind of electromagnetic shielding foam, including foamed aluminium supporting base material and is cast in the foamed aluminium support
Colloid is filled in mixing on substrate；The mixing filling colloid is grouped as by each group of following parts by weight: liquid heat conductive silica gel
90 parts, 10 parts of radio-radar absorber, 2 parts of cumyl peroxide, double 2 parts of the pyrrolidones silane of methyl ethylene, GPES type disappear
2 parts of infusion；The foamed aluminium pore size is purchased from Kunshan company, the radio-radar absorber 90% in 5mm, porosity
The Fe-Si-Cr alloy powder produced using Qingdao company, D50 20um, liquid heat conductive silica gel use the Shanghai company trade mark
For the organic casting glue of YF-0125 type high thermal conductivity.
The preparation process of the electromagnetic shielding foam, includes the following steps:
Step S1, radio-radar absorber, cumyl peroxide, the double pyrrolidones silane of methyl ethylene, GPES type
Defoaming agent and liquid heat conductive silica gel are put in proportion into stirred tank and are uniformly mixed, and stir 1h, and mixing speed 100r/min is obtained
Mixing filling colloid；
Step S2, foamed aluminium is fixed in mold first, then colloid is filled into the mixing prepared by step S1
It pours into, it is made to be sufficient filling with foamed aluminium；
Step S3, mold is heated, is warming up to 100 DEG C, then keeps the temperature 30min；
Step S4, temperature control setting is closed, room temperature, overall structure solidification are cooled to；
Step S5, the product after solidifying to overall structure is accordingly cut, and is cut into 50 × 50 × 5mm, is obtained finished product.
Embodiment 2
Embodiment 2 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only, described mixed
It closes filling colloid to be grouped as by each group of following parts by weight: 80 parts of liquid heat conductive silica gel, 20 parts of radio-radar absorber, peroxidating
Double 2 parts of the pyrrolidones silane of 2 parts of diisopropylbenzene (DIPB), methyl ethylene, 2 parts of GPES type defoaming agent.
Embodiment 3
Embodiment 2 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only, described mixed
It closes filling colloid to be grouped as by each group of following parts by weight: 70 parts of liquid heat conductive silica gel, 25 parts of radio-radar absorber, peroxidating
Double 3 parts of the pyrrolidones silane of 3 parts of diethyl propyl benzene, methyl ethylene, 3 parts of GP type defoaming agent.
Embodiment 4
Embodiment 2 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only, described mixed
It closes filling colloid to be grouped as by each group of following parts by weight: 75 parts of liquid heat conductive silica gel, 15 parts of radio-radar absorber, peroxidating
Double 4 parts of the pyrrolidones silane of 4 parts of diethyl propyl benzene, methyl ethylene, 3 parts of GP type defoaming agent.The vulcanizing agent is diphenyl peroxide
The new enanthic acid 1,1- dimethyl -3- hydroxy butyl ester 1:2:4 in mass ratio of formyl, peroxidating diethyl propyl benzene, peroxide is mixed.The expansion
Chain agent is the double pyrrolidones silane of methyl ethylene.The defoaming agent is GP type defoaming agent, GPE type defoaming agent, the defoaming of GPES type
Agent 1:3:5 in mass ratio is mixed.
Embodiment 5
Embodiment 2 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only, described mixed
It closes filling colloid to be grouped as by each group of following parts by weight: 75 parts of liquid heat conductive silica gel, 25 parts of radio-radar absorber, peroxidating
Double 5 parts of the pyrrolidones silane of 5 parts of diisopropylbenzene (DIPB), methyl ethylene, 5 parts of GPES type defoaming agent.Foamed aluminium structural void size control
System is in 3mm, and porosity is 90%.
Comparative example 1
Comparative example 1 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only, described mixed
It closes filling colloid to be grouped as by each group of following parts by weight: 90 parts of liquid heat conductive silica gel, 2 parts of cumyl peroxide, methyl
Double 2 parts of the pyrrolidones silane of vinyl, 2 parts of GPES type defoaming agent.
Comparative example 2
Comparative example 2 provides a kind of electromagnetic shielding foam, it with it is almost the same in embodiment 1, different is only the bubble
Foam aluminium supporting base material replaces with polyurethane foam.
Comparative example 3
Comparative example 3 provides a kind of conducting foam of commercially available 50 × 50 × 5mm size specification.
The technical effect of foam is electromagnetically shielded described in embodiment in order to further illustrate the present invention, by the electricity in above-mentioned each example
The transmission loss (@1GHz) and heating conduction of magnetic screen foam are measured, and test result and test method are shown in Table 1.
1 foam quantitative measurement result of table
As seen from Table 1, electromagnetic shielding foam provided in an embodiment of the present invention is more preferable compared with commercial product effectiveness, leads
Hot property is more preferably.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of electromagnetic shielding foam, which is characterized in that including foamed aluminium supporting base material and be cast in the foamed aluminium branch support group
Colloid is filled in mixing on material；The mixing filling colloid is grouped as by each group of following parts by weight: liquid heat conductive silica gel 70 ~
90 parts, 10 ~ 30 parts of radio-radar absorber, 1 ~ 5 part of vulcanizing agent, 1 ~ 5 part of chain extender, 1 ~ 5 part of defoaming agent.
2. being electromagnetically shielded foam according to claim 1, which is characterized in that the foamed aluminium is analogous to polyurethane foam
Special metal material containing foam stomata can be made by adding foaming agent into molten metal aluminium.
3. being electromagnetically shielded foam according to claim 2, which is characterized in that the foamed aluminium pore size 0.1mm ~ 10mm,
Porosity 80 ~ 98%.
4. being electromagnetically shielded foam according to claim 1, which is characterized in that the liquid heat conductive silica gel is one-component high thermal conductivity
Organic casting glue, viscosity is low under room temperature, and vulcanizing agent can be cooperated to handle through 80 DEG C or more hot settings.
5. being electromagnetically shielded foam according to claim 1, which is characterized in that the radio-radar absorber refer to by absorb or
Person substantially weakens a kind of material for projecting the electromagnetic wave energy on its surface and being converted into thermal energy.
6. being electromagnetically shielded foam according to claim 5, which is characterized in that the battery wave absorbent is Fe-Si-Cr alloy
Micro mist；The battery wave absorbent D50 is 10-30um.
7. being electromagnetically shielded foam according to claim 1, which is characterized in that the vulcanizing agent is organic peroxide sulfuration body
It is, including dibenzoyl peroxide, peroxidating diethyl propyl benzene, the new enanthic acid 1 of peroxide, it is any one in 1- dimethyl -3- hydroxy butyl ester
Kind or several mixing with arbitrary proportion.
8. being electromagnetically shielded foam according to claim 1, which is characterized in that the chain extender is the double pyrrolidines of methyl ethylene
Ketone silane.
9. being electromagnetically shielded foam according to claim 1, which is characterized in that the defoaming agent is polyethers defoaming agent, including
GP type defoaming agent, GPE type defoaming agent, any one or a few in GPES type defoaming agent are with the mixing of arbitrary proportion.
10. any one of -9 electromagnetic shielding foam according to claim 1, which is characterized in that the system of the electromagnetic shielding foam
Standby technique, includes the following steps:
Step S1, radio-radar absorber, vulcanizing agent, chain extender, defoaming agent and liquid heat conductive silica gel are put in proportion into stirred tank
It is interior to be uniformly mixed, 1h is stirred, mixing speed is 100 ~ 200r/min, obtains mixing filling colloid；
Step S2, foamed aluminium is fixed in mold first, then the mixing filling colloid prepared by step S1 is poured into,
It is set to be sufficient filling with foamed aluminium；
Step S3, mold is heated, is warming up to 80 ~ 150 DEG C, then keeps the temperature 30min；
Step S4, temperature control setting is closed, room temperature, overall structure solidification are cooled to；
Step S5, the product after solidifying to overall structure is accordingly cut, and finished product is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910397557.6A CN110213951A (en) | 2019-05-14 | 2019-05-14 | A kind of electromagnetic shielding foam and its preparation process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910397557.6A CN110213951A (en) | 2019-05-14 | 2019-05-14 | A kind of electromagnetic shielding foam and its preparation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474568A (en) * | 2022-01-19 | 2022-05-13 | 深圳市鸿富诚新材料股份有限公司 | Conductive foam injection molding device and conductive foam injection molding process |
| CN116749413A (en) * | 2023-08-22 | 2023-09-15 | 中核北方核燃料元件有限公司 | High-temperature-resistant composite shielding material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050284A (en) * | 2006-04-05 | 2007-10-10 | 中国科学院金属研究所 | Electromagnetic shielding macromolecule composite material |
| CN107027254A (en) * | 2016-02-02 | 2017-08-08 | 3M创新有限公司 | Compressible liner, its preparation method and the electronic product comprising it |
| CN206402607U (en) * | 2015-11-09 | 2017-08-11 | 天津莱尔德电子材料有限公司 | Board-level shield, component and electronic installation |
| CN107249291A (en) * | 2017-06-22 | 2017-10-13 | 朱勇 | Electric power scheduling automatization system electromagnetic shielding material |
| US20180084682A1 (en) * | 2016-09-20 | 2018-03-22 | Jones Tech (USA), Inc. | Shielding structure for an electronic circuit |
| CN109666298A (en) * | 2018-11-30 | 2019-04-23 | 苏州铂韬新材料科技有限公司 | A kind of rubber and preparation method thereof with excellent flame and absorbing property |
-
2019
- 2019-05-14 CN CN201910397557.6A patent/CN110213951A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050284A (en) * | 2006-04-05 | 2007-10-10 | 中国科学院金属研究所 | Electromagnetic shielding macromolecule composite material |
| CN206402607U (en) * | 2015-11-09 | 2017-08-11 | 天津莱尔德电子材料有限公司 | Board-level shield, component and electronic installation |
| CN107027254A (en) * | 2016-02-02 | 2017-08-08 | 3M创新有限公司 | Compressible liner, its preparation method and the electronic product comprising it |
| US20180084682A1 (en) * | 2016-09-20 | 2018-03-22 | Jones Tech (USA), Inc. | Shielding structure for an electronic circuit |
| CN107249291A (en) * | 2017-06-22 | 2017-10-13 | 朱勇 | Electric power scheduling automatization system electromagnetic shielding material |
| CN109666298A (en) * | 2018-11-30 | 2019-04-23 | 苏州铂韬新材料科技有限公司 | A kind of rubber and preparation method thereof with excellent flame and absorbing property |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114474568A (en) * | 2022-01-19 | 2022-05-13 | 深圳市鸿富诚新材料股份有限公司 | Conductive foam injection molding device and conductive foam injection molding process |
| CN116749413A (en) * | 2023-08-22 | 2023-09-15 | 中核北方核燃料元件有限公司 | High-temperature-resistant composite shielding material and preparation method thereof |
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