CN208006408U - A kind of impact-resistant electromagnetic shielding laminate - Google Patents
A kind of impact-resistant electromagnetic shielding laminate Download PDFInfo
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- CN208006408U CN208006408U CN201820343334.2U CN201820343334U CN208006408U CN 208006408 U CN208006408 U CN 208006408U CN 201820343334 U CN201820343334 U CN 201820343334U CN 208006408 U CN208006408 U CN 208006408U
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Abstract
The utility model discloses a kind of impact-resistant electromagnetic shielding laminates.The impact-resistant electromagnetic shielding laminate includes outermost two layers of insulating resin layer (1), and n+1 carbon fiber felt shielded layer (2) being stacked alternately between two layers of insulating resin layer (1) and n aramid fabric enhancement layer (3), one layer of insulating resin layer (1) is additionally provided between adjacent carbon fiber felt shielded layer (2) and aramid fabric enhancement layer (3)；The value range of the n is 3 >=n >=1.The advantages of product of the utility model combines both carbon fiber felt and aramid fabric has had both excellent capability of electromagnetic shielding, tensile property and impact resistance, is a kind of relatively thin, corrosion resistant new lightweight material.
Description
Technical field
The utility model belongs to electromagnetic shielding material field, and in particular to a kind of impact-resistant electromagnetic shielding laminate.
Background technology
With the appearance of various electronic equipments, electromagnetic radiation pollution becomes a kind of novel pollution.Electromagnetic radiation is not only
The normal operation of electronic equipment, and the health of meeting harmful to human can be interfered.In order to reduce shadow of the electromagnetic radiation to human lives
It rings, some electromagnetic shielding materials such as chopped carbon fiber felt gradually has received widespread attention, such as Chinese patent application
CN201710028677 discloses a kind of chopped carbon fiber electromagnetic shielding composite material and preparation method thereof, and structure includes outer layer
Two layers of insulating resin layer and one layer of carbon fiber felt shielded layer have good electric conductivity and capability of electromagnetic shielding.But in order to chase after
Excellent capability of electromagnetic shielding is sought, the prior art often ignores the mechanical property of electromagnetic shielding material, and mechanical property is electricity
Magnetic shielding material is applied to the basic guarantee of every field.For the shell of military aircraft, sophisticated electronics, in addition to excellent
Electromagnetic wave shielding, good impact resistance are also the performance of indispensability.Since 1988, caused due to bird collisions aircraft dead
The number died is hundreds of.Due to the brittleness of carbon fiber so that the impact resistance of chopped carbon fiber felt is very poor, in fact
Border application receives serious limitation.
Aramid fiber is the new material of a kind of corrosion-resistant, high temperature resistant, excellent in mechanical performance, is widely used shellproof
Armor, building reinforcing etc..Due to its excellent performance, aramid fiber can be made various antiballistic clothing, Anti-cut Gloves with
And flame-retardant textile etc..But aramid fiber its performance meeting after absorbing water by long-term radiation of visible light and in wet condition
Decline, and the nonconducting property of aramid fiber hinders it to need to be electromagnetically shielded in invisbile plane, sophisticated electronics shell etc.
Field application.Chinese patent application CN201210297876.8 discloses a kind of aramid fiber and carbon fiber shuffling cloth, solution
Determined carbon fiber not impact resistance the problem of.But since there is no the ability of electromagnetic shielding, electromagnetism for the aramid fiber in shuffling cloth
Radiation can be directly by the region occupied by aramid fiber, and electromagnetic radiation cannot be shielded by resulting in shuffling cloth.Therefore shuffling
Cloth only has impact resistance without the ability of electromagnetic shielding.In addition, light weight, corrosion-resistant, resistance to weather are increasingly becoming
Aerospace field needs the key technical problem solved.Therefore, currently available technology also lacks one kind and having both impact resistance, electromagnetism
The material for the advantages that shielding properties is excellent, corrosion-resistant.
Utility model content
To solve the disadvantage that the prior art and shortcoming, the purpose of this utility model is to provide a kind of impact-resistant electricity
Magnetic masking layer pressing plate.
The purpose of this utility model is achieved through the following technical solutions：
A kind of impact-resistant electromagnetic shielding laminate, including outermost two layers of insulating resin layer 1, and insulate at two layers
The n+1 carbon fiber felt shielded layer 2 and n aramid fabric enhancement layer 3 being stacked alternately between resin layer 1, adjacent carbon fiber felt screen
It covers and is additionally provided with one layer of insulating resin layer 1 between layer 2 and aramid fabric enhancement layer 3；The value range of the n is 3 >=n >=1.
Preferably, the mass ratio of the aramid fabric enhancement layer 3 of the carbon fiber felt shielded layer 2 and single layer of single layer is 4:
9~1:1.
Preferably, the material of the insulating resin layer 1 is thermoplastic resin, and thickness is 0.10~0.13mm.
Preferably, the carbon fiber felt shielded layer 2 is made by the chopped carbon fiber that length is 4~8mm by wet papermaking,
Its surface density is 40~60g/m2。
Preferably, the aramid fabric enhancement layer 3 is plain made of being woven through aramid fiber tow.
Compared with prior art, the utility model has the advantages that：
(1) the utility model is by being superimposed carbon fiber felt shielded layer and aramid fabric enhancement layer so that laminate is provided simultaneously with
The impact resistance of the electromagnetic wave shielding and aramid fabric enhancement layer of carbon fiber felt shielded layer.
(2) outermost layer of laminate is insulating resin layer, has completely cut off contact of the aramid fabric enhancement layer with outside air, has overcome
The shortcomings that mechanical property can decline after aramid fiber water suction.And outermost insulating resin layer provides well for material
Protective effect.
(3) there is carbon fiber felt shielded layer to shut out the light outside aramid fabric enhancement layer, it is poor to solve aramid fiber light resistance
The problem of.
(4) carbon fiber, the aramid fiber of the utility model use are light material, are conducive to the hair of field of aerospace
Exhibition.
Description of the drawings
Fig. 1 is the structural schematic diagram of the impact-resistant electromagnetic shielding laminate of 1 gained of the utility model embodiment.
Fig. 2 is the SEM figures of the carbon fiber felt shielded layer in the utility model embodiment 1.
Fig. 3 is the structural schematic diagram of the utility model aramid fabric enhancement layer.
Reference numeral
1 is insulating resin layer；2 be carbon fiber felt shielded layer；3 be aramid fabric enhancement layer
Specific implementation mode
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment 1
A kind of impact-resistant electromagnetic shielding laminate, including outermost two layers of insulating resin layer 1, and insulate at two layers
The three carbon fiber felt shielded layers 2 and two aramid fabric enhancement layers 3 being stacked alternately between resin layer 1, adjacent carbon fiber felt screen
It covers and is additionally provided with one layer of insulating resin layer 1 between layer 2 and aramid fabric enhancement layer 3；
The material of the insulating resin layer 1 is polycarbonate film, and thickness 0.1mm is excellent with corrosion-resistant, resistance to weather
Point；
The carbon fiber felt shielded layer is made by the chopped carbon fiber that length is 6mm, surface density 50g/m2；
The aramid fabric enhancement layer 3 is plain made of being woven through aramid fiber tow.
The mass ratio of the carbon fiber felt shielded layer and aramid fabric enhancement layer is 5:7.
In this embodiment, to impact-resistant electromagnetic shielding laminate carried out thickness, density, electromagnetic shielding, stretching with
And shock-testing.Test result is that the thickness of laminate is 1.02mm, density 1.27g/cm3.It is 30-1500MHz in frequency
In the range of its shield effectiveness reach 62dB, can stop 99.9% incident electromagnetic wave.Tensile strength is 223MPa, impacts peak
It is worth power 802.9N, impact failure area is 255mm2.Therefore laminate manufactured in the present embodiment has excellent electromagnetic wave shielding
Energy, tensile property and impact resistance, are a kind of relatively thin, corrosion resistant light materials.
Embodiment 2
A kind of impact-resistant electromagnetic shielding laminate, including outermost two layers of insulating resin layer 1, and insulate at two layers
The two carbon fiber felt shielded layers 2 and an aramid fabric enhancement layer 3 being stacked alternately between resin layer 1, adjacent carbon fiber felt screen
It covers and is additionally provided with one layer of insulating resin layer 1 between layer 2 and aramid fabric enhancement layer 3；
The material of the insulating resin layer 1 is polycarbonate film, and thickness 0.12mm has corrosion-resistant, resistance to weather
Advantage；
The carbon fiber felt shielded layer is made by the chopped carbon fiber that length is 8mm, surface density 60g/m2；
The aramid fabric enhancement layer 3 is plain made of being woven through aramid fiber tow.
The mass ratio of the carbon fiber felt shielded layer and aramid fabric enhancement layer is 2:3.
In this embodiment, to impact-resistant electromagnetic shielding laminate carried out thickness, density, electromagnetic shielding, stretching with
And shock-testing.Test result is that the thickness of laminate is 0.652mm, density 1.32g/cm3.It is 30-1500MHz in frequency
In the range of its shield effectiveness reach 53dB, can stop 99.9% incident electromagnetic wave.Tensile strength is 178MPa, impacts peak
Value power is 545N, impact damage area 230mm2.Therefore laminate manufactured in the present embodiment have excellent capability of electromagnetic shielding,
Tensile property and impact resistance are a kind of relatively thin, corrosion resistant light materials.
Embodiment 3
A kind of impact-resistant electromagnetic shielding laminate, including outermost two layers of insulating resin layer 1, and insulate at two layers
The two carbon fiber felt shielded layers 2 and an aramid fabric enhancement layer 3 being stacked alternately between resin layer 1, adjacent carbon fiber felt screen
It covers and is additionally provided with one layer of insulating resin layer 1 between layer 2 and aramid fabric enhancement layer 3；
The material of the insulating resin layer 1 is polycarbonate film, and thickness 0.125mm has corrosion-resistant, resistance to weather
Advantage；
The carbon fiber felt shielded layer is made by the chopped carbon fiber that length is 4mm, surface density 40g/m2；
The aramid fabric enhancement layer 3 is plain made of being woven through aramid fiber tow.
The mass ratio of the carbon fiber felt shielded layer and aramid fabric enhancement layer is 4:9.
In this embodiment, to impact-resistant electromagnetic shielding laminate carried out thickness, density, electromagnetic shielding, stretching with
And shock-testing.Test result is that the thickness of laminate is 0.660mm, density 1.21g/cm3.It is 30-1500MHz in frequency
In the range of its shield effectiveness reach 49dB, can stop 99.9% incident electromagnetic wave.Tensile strength is 172.2MPa, impact
Peak force is 536.8N, impact damage area 239mm2.Therefore laminate manufactured in the present embodiment has excellent electromagnetic shielding
Performance, tensile property and impact resistance are a kind of relatively thin, corrosion resistant light materials.
Comparative example 1
A kind of impact-resistant laminate, in addition to carbon fiber felt shielded layer 2 is all removed, remaining condition and preparation method ginseng
See embodiment 2.
In comparative example 1, material its shield effectiveness in the range of frequency is 30-1500MHz is 0.24dB, that is, is only capable of hindering
The incident electromagnetic wave of gear 5.4%, it is seen that the capability of electromagnetic shielding of laminate prepared by comparative example 1 is much worse than embodiment 2, this practicality
Novel middle carbon fiber felt shielded layer 2 makes laminate capability of electromagnetic shielding obtain great promotion.
Comparative example 2
A kind of impact-resistant laminate, in addition to aramid fabric enhancement layer 3 is all removed, remaining condition and preparation method referring to
Embodiment 2.
In comparative example 2, the impact peak value power that testing of materials obtains is only 213N, and impact damage area is expanded as
850mm2, it is seen that the impact property of laminate prepared by comparative example 2 is much worse than embodiment 2, and aramid fabric enhances in the utility model
Layer 3 makes laminate mechanical property obtain great promotion.
Following table summarizes some important parameters and technique effect of Examples 1 to 3 and comparative example 1~2.
The important parameter and technique effect of 1 Examples 1 to 3 of table and comparative example 1~2
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model is not by above-mentioned
The limitation of embodiment, under other any Spirit Essences and principle without departing from the utility model made by change, modify, replace
In generation, simplifies combination, should be equivalent substitute mode, is included within the scope of protection of the utility model.
Claims (5)
1. a kind of impact-resistant electromagnetic shielding laminate, which is characterized in that including outermost two layers of insulating resin layer (1), with
And n+1 carbon fiber felt shielded layer (2) being stacked alternately between two layers of insulating resin layer (1) and n aramid fabric enhancement layer
(3), one layer of insulating resin layer (1) is additionally provided between adjacent carbon fiber felt shielded layer (2) and aramid fabric enhancement layer (3)；Institute
The value range for stating n is 3 >=n >=1.
2. a kind of impact-resistant electromagnetic shielding laminate according to claim 1, which is characterized in that the carbon fiber of single layer
The mass ratio for tieing up felt shielded layer (2) and the aramid fabric enhancement layer (3) of single layer is 4:9~1:1.
3. a kind of impact-resistant electromagnetic shielding laminate according to claim 1, which is characterized in that the insulating resin layer
(1) material is thermoplastic resin, is 0.10~0.13mm per layer thickness.
4. a kind of impact-resistant electromagnetic shielding laminate according to claim 1, which is characterized in that the carbon fiber felt screen
It covers layer (2) to be made by wet papermaking by the chopped carbon fiber that length is 4~8mm, surface density is 40~60g/m2。
5. a kind of impact-resistant electromagnetic shielding laminate according to claim 1, which is characterized in that the aramid fabric enhancing
Layer (3) is plain made of being woven through aramid fiber tow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820343334.2U CN208006408U (en) | 2018-03-14 | 2018-03-14 | A kind of impact-resistant electromagnetic shielding laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820343334.2U CN208006408U (en) | 2018-03-14 | 2018-03-14 | A kind of impact-resistant electromagnetic shielding laminate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208006408U true CN208006408U (en) | 2018-10-26 |
Family
ID=63887551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820343334.2U Active CN208006408U (en) | 2018-03-14 | 2018-03-14 | A kind of impact-resistant electromagnetic shielding laminate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208006408U (en) |
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2018
- 2018-03-14 CN CN201820343334.2U patent/CN208006408U/en active Active
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