CN109166659A - A kind of communication cable of fire resisting electromagnetism interference - Google Patents
A kind of communication cable of fire resisting electromagnetism interference Download PDFInfo
- Publication number
- CN109166659A CN109166659A CN201811020603.2A CN201811020603A CN109166659A CN 109166659 A CN109166659 A CN 109166659A CN 201811020603 A CN201811020603 A CN 201811020603A CN 109166659 A CN109166659 A CN 109166659A
- Authority
- CN
- China
- Prior art keywords
- woven fabrics
- fire resisting
- hydroxyapatite
- communication cable
- electromagnetism interference
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
The present invention provides a kind of communication cables of fire resisting electromagnetism interference, belong to technical field of communication cables.In the present invention, carbon nanotube is a kind of good electromagnetic shielding material, has superior physical chemistry and mechanical performance, and outstanding electromagnetic property allows it so that material is shown good electromagnetic shielding performance when adding in the composite.Hydroxyapatite nano line non-woven fabrics high temperature resistant, does not burn, and has good fire resistance, and carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics have both good fire prevention and shielding effect.Embodiment statistics indicate that, the communication cable of fire resisting electromagnetism interference produced by the present invention carries out the sustained combustion of 10s using lighter to it, and communication cable is as excellent as before, shows it with good fire resistance；Electromagnetic shielding performance test is carried out to it using vector network analyzer, reaches 30~40dB in 30~1500MHz frequency range electromagnet shield effect.
Description
Technical field
The present invention relates to technical field of communication cables more particularly to a kind of communication cables of fire resisting electromagnetism interference.
Background technique
With the development of the society, information transmitting gradually agrees with the needs of people at a distance.Communication cable is essential
Transmission information important tool, the messages such as phone, telegram, data and image can be transmitted, it is ensured that transmit the stability of information
And safety, it is necessary to which communication cable itself has certain electromagnetism interference i.e. shielding properties.
The shielding communication cable used currently on the market is the biography that signal wire is wrapped up using metal net shaped braiding layer
Defeated line, braiding layer are usually red metal or tin-coated copper, however influence of this metal screen layer vulnerable to extraneous factor, such as are grounded
Resistance and potential problem, under strong-electromagnetic field interference, shield effectiveness is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of communication cables of fire resisting electromagnetism interference.The present invention is received with hydroxyapatite
Rice noodles non-woven fabrics forms insulated barriers layer and fire resisting restrictive coating, with carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics group
At electro-magnetic screen layer, the performance of communication cable shielding electromagnetic interference is improved.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of communication cable of fire resisting electromagnetism interference successively includes cable core, electro-magnetic screen layer and fire resisting from inside to outside
Restrictive coating, the cable core include conducting wire and insulated barriers layer from inside to outside, and the insulated barriers layer and fire resisting restrictive coating are
Hydroxyapatite nano line non-woven fabrics, the electro-magnetic screen layer are carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics.
Preferably, the thickness of the hydroxyapatite nano line non-woven fabrics independently is 0.1~1.5mm.
Preferably, the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics with a thickness of 0.1~1.5mm.
Preferably, carbon nanotube and hydroxyapatite in the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics
The mass ratio of nano wire is 3:7~7:3.
Preferably, the hydroxyapatite nano line non-woven fabrics and carbon nanometer tube/hydroxyapatite nano wire conduction nonwoven
The length of hydroxyapatite nano line in cloth independently is 50~100 μm, and diameter independently is 60~300nm.
Preferably, the hydroxyapatite nano line non-woven fabrics is prepared by method comprising the following steps:
Hydroxyapatite nano line is mixed with ethyl alcohol, obtains slurry；
The slurry is sprayed in foil substrate, then stripping group bottom, obtains hydroxyapatite nano line non-woven fabrics.
Preferably, the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics are by method comprising the following steps system
It is standby to obtain:
Carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are provided；
The carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are mixed, slurry is obtained；
The slurry is sprayed in foil substrate, then stripping group bottom, obtains carbon nanometer tube/hydroxyapatite nano wire
Conductive non-woven fabrics.
Preferably, the dispersing agent in the carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid is ethyl alcohol, institute
The mass ratio for stating the gross mass and ethyl alcohol of carbon nanotube and hydroxyapatite nano line in slurry is 1:10~20.
It preferably, further include hot-forming behind the stripping group bottom.
Preferably, the hot-forming temperature is 150~180 DEG C, and hot-forming line pressure is 120~150KN/m.
The present invention provides a kind of communication cables of fire resisting electromagnetism interference, from inside to outside successively include cable core, electromagnetism
Shielded layer and fire resisting restrictive coating, the cable core include conducting wire and insulated barriers layer from inside to outside, the insulated barriers layer and
Fire resisting restrictive coating is hydroxyapatite nano line non-woven fabrics, and the electro-magnetic screen layer is carbon nanometer tube/hydroxyapatite nano wire
Conductive non-woven fabrics.In the present invention, carbon nanotube is a kind of good electromagnetic shielding material, has superior physical chemistry and machinery
Performance, outstanding electromagnetic property allow it so that material is shown good electromagnetic wave shielding when adding in the composite
Energy.Hydroxyapatite nano line non-woven fabrics high temperature resistant, does not burn, and has good fire resistance, carbon nanometer tube/hydroxyapatite
Nano wire conductive non-woven fabrics have both good fire prevention and shielding effect.Embodiment statistics indicate that, fire resisting produced by the present invention
The communication cable of electromagnetism interference carries out the sustained combustion of 10s using lighter to it, and communication cable is as excellent as before, shows its tool
There is good fire resistance；Electromagnetic shielding performance test is carried out to it using vector network analyzer, in 30~1500MHz frequency range
Electromagnet shield effect reaches 30~40dB.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the communication cable of fire resisting electromagnetism interference made from embodiment 1, and 1 is resistance in figure
Fiery restrictive coating, 2 be electro-magnetic screen layer, and 3 be insulated barriers layer, and 4 be conducting wire.
Specific embodiment
The present invention provides a kind of communication cables of fire resisting electromagnetism interference, from inside to outside successively include cable core, electromagnetism
Shielded layer and fire resisting restrictive coating, the cable core include conducting wire and insulated barriers layer from inside to outside, the insulated barriers layer and
Fire resisting restrictive coating is hydroxyapatite nano line non-woven fabrics, and the electro-magnetic screen layer is carbon nanometer tube/hydroxyapatite nano wire
Conductive non-woven fabrics.
In the present invention, the thickness of the hydroxyapatite nano line non-woven fabrics is independently preferably 0.1~1.5mm, more
Preferably 0.5~1mm.
In the present invention, the thickness of the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics be preferably 0.1~
1.5mm, more preferably 0.5~1mm.
In the present invention, carbon nanotube and hydroxyl phosphorus in the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics
The mass ratio of lime stone nano wire is preferably 3:7~7:3.
In the present invention, the hydroxyapatite nano line non-woven fabrics and carbon nanometer tube/hydroxyapatite nano wire are conductive
The length of hydroxyapatite nano line in non-woven fabrics independently be preferably 50~100 μm, diameter independently be preferably 60~
300nm。
In the present invention, the conducting wire is preferably copper conduction.
In the present invention, the cable core is preferably 2, and the periphery of two cable core is preferably in contact with each other.
In the present invention, the hydroxyapatite nano line non-woven fabrics is preferably prepared by method comprising the following steps
It arrives:
Hydroxyapatite nano line is mixed with ethyl alcohol, obtains slurry；
The slurry is sprayed in foil substrate, then stripping group bottom, obtains hydroxyapatite nano line non-woven fabrics.
The present invention mixes hydroxyapatite nano line with ethyl alcohol, obtains slurry.The present invention receives the hydroxyapatite
The source of rice noodles does not have special restriction, is made using preparation method well known to those skilled in the art, specifically, such as existing
In the case where lasting stirring, by CaCl2Aqueous solution, NaOH aqueous solution and NaH2PO4·2H2O aqueous solution be added dropwise respectively oleic acid with
In the mixed solution of ethyl alcohol, then gained mixture is transferred in the stainless steel autoclave of teflon lined,
It is heat-treated under air-proof condition, after products therefrom is cooled to room temperature, is washed for several times with ethyl alcohol and deionized water to get to pure hydroxyl
Base apatite nano wire.
In the present invention, the mass ratio of the hydroxyapatite nano line and ethyl alcohol is preferably 1:10.
After obtaining slurry, the present invention sprays to the slurry in foil substrate, then stripping group bottom, obtains hydroxy-apatite
Stone nano wire non-woven fabrics.The present invention does not have special restriction to the concrete mode of the spraying and stripping group bottom, using ability
Method known to field technique personnel, specifically, such as airless spraying.
Behind stripping group bottom, the present invention preferably will removing substrate product drying.In the present invention, the temperature of the drying is preferred
It is 60 DEG C.
After the completion of drying, it is hot-forming that the present invention will preferably dry product, obtain hydroxyapatite nano line non-woven fabrics.?
In the present invention, the hot-forming temperature is preferably 150~180 DEG C, and more preferably 160 DEG C, hot-forming line pressure is excellent
It is selected as 120~150KN/m.In the present invention, described hot-forming preferably to be carried out in roll-type hot press.
In the present invention, the carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics are preferably by including the following steps
Method be prepared:
Carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are provided；
The carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are mixed, slurry is obtained；
The slurry is sprayed in foil substrate, then stripping group bottom, obtains carbon nanometer tube/hydroxyapatite nano wire
Conductive non-woven fabrics.
In the present invention, the dispersing agent in the carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid is preferably
Ethyl alcohol, in the slurry mass ratio of the gross mass and ethyl alcohol of carbon nanotube and hydroxyapatite nano line be preferably 1:10~
20。
In the present invention, the spraying is preferably electrostatic spraying.
Behind stripping group bottom, the present invention preferably will removing substrate product drying.In the present invention, the temperature of the drying is preferred
It is 60 DEG C.
In the present invention, it is also preferable to include hot-forming behind the stripping group bottom.
In the present invention, the hot-forming temperature is preferably 150~180 DEG C, more preferably 160 DEG C, hot-forming
Line pressure be preferably 120~150KN/m.In the present invention, described hot-forming preferably to be carried out in roll-type hot press.
The present invention does not have special restriction to the preparation method of the communication cable of the fire resisting electromagnetism interference, using ability
The preparation method of cable known to field technique personnel.
It is described in detail below with reference to communication cable of the embodiment to fire resisting electromagnetism interference provided by the invention, but
It is that they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
By CaCl2(0.1g) aqueous solution (10mL), NaOH (0.5g) aqueous solution (10mL) and NaH2PO4·2H2O(0.15g)
Aqueous solution (5mL) be added dropwise respectively oleic acid (12.0g), ethyl alcohol (12.0g) mixed solution in.Then gained mixture is shifted
Into the stainless steel autoclave of the teflon lined of 50mL, it is heat-treated 24 hours under 180 DEG C of air-proof conditions.It is cooling
To room temperature, washed for several times with ethyl alcohol and deionized water to get to pure hydroxyapatite nano line.
It weighs 5g hydroxyapatite nano line obtained above to be dispersed in 50g ethanol solution, be ground using sand mill
30min slurrying is equably sprayed to slurry in foil substrate using high pressure airless spray equipment, behind stripping group bottom, 60 DEG C of drying
It is dried in case, in hot pressing temperature is 160 DEG C using roll-type hot press, it is hot-forming under line pressure 150KN/m, hydroxy-apatite is made
Stone nano wire non-woven fabrics, hydroxyapatite nano line nonwoven thickness are 0.5mm.
It weighs 2g carbon nanotube is dispersed in 20g ethanol solution, by Microfluidic Mixing machine by carbon nano tube dispersion liquid
It is by the way of electrostatic spraying that slurry is uniform after 30g hydroxyapatite nano line homogeneous dispersion mixing obtained above
Ground sprays in foil substrate, behind stripping group bottom, dries in 60 DEG C of drying boxes, using roll-type hot press hot pressing temperature be 160
DEG C, it is hot-forming under line pressure 150KN/m, carbon nanometer tube/hydroxyapatite conductive non-woven fabrics, carbon nanotube/hydroxyl phosphorus is made
Lime stone conductive non-woven fabrics are with a thickness of 0.5mm.
Carbon nanometer tube/hydroxyapatite conductive non-woven fabrics and hydroxyapatite nano line non-woven fabrics and conducting wire are made logical
Interrogate cable.
Hydroxyapatite nano line non-woven fabrics obtained and carbon nanometer tube/hydroxyapatite conductive non-woven fabrics are assembled into resistance to
The communication cable of fiery electromagnetism interference, cross-section structure as shown in Figure 1, in Fig. 11 be fire resisting restrictive coating, 2 be electro-magnetic screen layer, and 3 are
Insulated barriers layer, 4 be conducting wire, including two cables core, electro-magnetic screen layer, fire resisting restrictive coating, cable core include hydroxyapatite
Nano wire non-woven fabrics and conducting wire, the fire resisting restrictive coating 1 is hydroxyapatite nano line non-woven fabrics, with a thickness of 0.5mm, the electricity
Magnetic masking layer 2 is carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics, and with a thickness of 1mm, the insulated barriers layer 3 is hydroxyl
Base apatite nano wire non-woven fabrics, with a thickness of 0.5mm, the conducting wire 4 is single copper wire, the peripheries of two adjacent cables core that
This contact.
Embodiment 2
The preparation method of hydroxyapatite nano line non-woven fabrics is same as Example 1, and difference is only that hydroxyapatite is received
Rice noodles nonwoven thickness is 1mm.
The preparation method of carbon nanometer tube/hydroxyapatite conductive non-woven fabrics is same as Example 1, and difference is only that carbon nanometer
Pipe/hydroxyapatite conductive non-woven fabrics are with a thickness of 1mm.
Carbon nanometer tube/hydroxyapatite conductive non-woven fabrics and hydroxyapatite nano line non-woven fabrics and conducting wire are made logical
Interrogate cable, communication cable includes cable core, electro-magnetic screen layer, fire resisting restrictive coating, cable core include hydroxyapatite nano line without
Woven fabric and conducting wire, fire resisting restrictive coating is hydroxyapatite nano line non-woven fabrics, with a thickness of 1mm, electro-magnetic screen layer be carbon nanotube/
Hydroxyapatite nano line conductive non-woven fabrics, with a thickness of 1mm, insulated barriers layer is hydroxyapatite nano line non-woven fabrics, thickness
For 1mm, conducting wire is single copper wire.
The performance of the communication cable of fire resisting electromagnetism interference made from Examples 1 to 2 is measured, it is as a result as follows: benefit
The sustained combustion of 10s is carried out to it with lighter, communication cable is as excellent as before, shows it with good fire resistance；Using
Vector network analyzer carries out electromagnetic shielding performance test to it, reach 30 in 30~1500MHz frequency range electromagnet shield effect~
40dB。
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of communication cable of fire resisting electromagnetism interference successively includes cable core, electro-magnetic screen layer and fire resisting shield from inside to outside
Jacket layer, the cable core include conducting wire and insulated barriers layer from inside to outside, and the insulated barriers layer and fire resisting restrictive coating are hydroxyl
Base apatite nano wire non-woven fabrics, the electro-magnetic screen layer are carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics.
2. the communication cable of fire resisting electromagnetism interference according to claim 1, which is characterized in that the hydroxyapatite is received
The thickness of rice noodles non-woven fabrics independently is 0.1~1.5mm.
3. the communication cable of fire resisting electromagnetism interference according to claim 1 or 2, which is characterized in that the carbon nanotube/
Hydroxyapatite nano line conductive non-woven fabrics with a thickness of 0.1~1.5mm.
4. the communication cable of fire resisting electromagnetism interference according to claim 3, which is characterized in that the carbon nanotube/hydroxyl
The mass ratio of carbon nanotube and hydroxyapatite nano line is 3:7~7:3 in base apatite nano wire conductive non-woven fabrics.
5. the communication cable of fire resisting electromagnetism interference according to claim 1, which is characterized in that the hydroxyapatite is received
The length of rice noodles non-woven fabrics and the hydroxyapatite nano line in carbon nanometer tube/hydroxyapatite nano wire conductive non-woven fabrics is independent
Ground is 50~100 μm, and diameter independently is 60~300nm.
6. the communication cable of fire resisting electromagnetism interference according to claim 1, which is characterized in that the hydroxyapatite is received
Rice noodles non-woven fabrics is prepared by method comprising the following steps:
Hydroxyapatite nano line is mixed with ethyl alcohol, obtains slurry；
The slurry is sprayed in foil substrate, then stripping group bottom, obtains hydroxyapatite nano line non-woven fabrics.
7. the communication cable of fire resisting electromagnetism interference according to claim 1, which is characterized in that the carbon nanotube/hydroxyl
Base apatite nano wire conductive non-woven fabrics are prepared by method comprising the following steps:
Carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are provided；
The carbon nano tube dispersion liquid and hydroxyapatite nano line dispersion liquid are mixed, slurry is obtained；
The slurry is sprayed in foil substrate, then stripping group bottom, it is conductive to obtain carbon nanometer tube/hydroxyapatite nano wire
Non-woven fabrics.
8. the communication cable of fire resisting electromagnetism interference according to claim 7, which is characterized in that the carbon nanotube dispersion
Dispersing agent in liquid and hydroxyapatite nano line dispersion liquid is ethyl alcohol, carbon nanotube and hydroxyapatite nano in the slurry
The gross mass of line and the mass ratio of ethyl alcohol are 1:10~20.
9. the communication cable of fire resisting electromagnetism interference according to claim 6 or 7, which is characterized in that the stripping group bottom
After further include hot-forming.
10. the communication cable of fire resisting electromagnetism interference according to claim 9, which is characterized in that described hot-forming
Temperature is 150~180 DEG C, and hot-forming line pressure is 120~150KN/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020603.2A CN109166659A (en) | 2018-09-03 | 2018-09-03 | A kind of communication cable of fire resisting electromagnetism interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811020603.2A CN109166659A (en) | 2018-09-03 | 2018-09-03 | A kind of communication cable of fire resisting electromagnetism interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109166659A true CN109166659A (en) | 2019-01-08 |
Family
ID=64893836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811020603.2A Pending CN109166659A (en) | 2018-09-03 | 2018-09-03 | A kind of communication cable of fire resisting electromagnetism interference |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1992099A (en) * | 2005-12-30 | 2007-07-04 | 鸿富锦精密工业（深圳）有限公司 | Conductive composite material and electric cable containing same |
| JP2007169415A (en) * | 2005-12-21 | 2007-07-05 | Fujikura Ltd | Fire-retardant and fire-resistant ethylene-propylene-diene copolymer composition and low voltage fire resistant wire/cable |
| CN106772846A (en) * | 2016-12-02 | 2017-05-31 | 中国科学院上海硅酸盐研究所 | A kind of inorganic fire-retarded refractory heat-insulating band and its application |
| CN107012720A (en) * | 2017-03-13 | 2017-08-04 | 南昌大学 | A kind of conductive non-woven fabrics preparation method of bio-compatible |
-
2018
- 2018-09-03 CN CN201811020603.2A patent/CN109166659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007169415A (en) * | 2005-12-21 | 2007-07-05 | Fujikura Ltd | Fire-retardant and fire-resistant ethylene-propylene-diene copolymer composition and low voltage fire resistant wire/cable |
| CN1992099A (en) * | 2005-12-30 | 2007-07-04 | 鸿富锦精密工业（深圳）有限公司 | Conductive composite material and electric cable containing same |
| CN106772846A (en) * | 2016-12-02 | 2017-05-31 | 中国科学院上海硅酸盐研究所 | A kind of inorganic fire-retarded refractory heat-insulating band and its application |
| CN107012720A (en) * | 2017-03-13 | 2017-08-04 | 南昌大学 | A kind of conductive non-woven fabrics preparation method of bio-compatible |
Non-Patent Citations (1)
| Title |
|---|
| 贤集网: "羟基磷灰石超长纳⽶线柔性耐⽕织物制备成功", 《HTTPS://WWW.XIANJICHINA.COM/NEWS/DETAILS_25017.HTML》 * |
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Application publication date: 20190108 |