CN110105761A - Graphene/polyphenylene sulfide electromagnetic shielding composite material and preparation method thereof - Google Patents
Graphene/polyphenylene sulfide electromagnetic shielding composite material and preparation method thereof Download PDFInfo
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- CN110105761A CN110105761A CN201910417748.4A CN201910417748A CN110105761A CN 110105761 A CN110105761 A CN 110105761A CN 201910417748 A CN201910417748 A CN 201910417748A CN 110105761 A CN110105761 A CN 110105761A
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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
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- 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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- 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
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Abstract
The present invention relates to graphene/polyphenylene sulfide electromagnetic shielding composite materials and preparation method thereof, belong to polymer matrix functional composite material technical field.The technical problem to be solved by the present invention is to provide a kind of under the low conductive filler dosage good electromagnetic shielding composite material of electromagnetic shielding performance.The composite material with isolation structure that the material is prepared from the following parts by weight of the components: 97~99.5 parts of polyphenylene sulfide, 0.5 part~3 parts of graphene nanometer sheet.The present invention is designed by the distributed architecture of conductive filler, in conjunction with the comprehensive performance that polyphenylene sulfide itself is excellent, using specific raw material, specific proportion, the excellent high-performance special engineering resin base electro-magnetic screen composite material of electromagnetic shielding performance is obtained, thoroughly solves the problems, such as that conducting polymer shielding material is dfficult to apply in the adverse circumstances such as high temperature, deep-etching.And the preparation process of the material is simple, and cost is relatively low, it is easy to accomplish, it is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to graphene/polyphenylene sulfide electromagnetic shielding composite materials and preparation method thereof, belong to polymer matrix function
It can technical field of composite materials.
Background technique
The rapid development of hyundai electronics electric appliance and communication equipment, although bringing endless convenience to people's lives,
Serious electromagnetic radiation is also resulted in simultaneously.Electromagnetic radiation not only interferes electrical equipment, while also threaten the mankind's
Living environment even health.Therefore, it is increasingly heavy to have become academia and industry for the research and development of electromagnetic shielding material
Depending on research topic.Conductive polymer composite compared with traditional metal base electromagnetic screen material have processing performance it is good,
A kind of the advantages that light-weight, corrosion-resistant, shielding properties can regulate and control, it has also become novel electromagnetic shielding with broad prospect of application
Material.
Polyphenylene sulfide has that mechanical property is good, and solvent resistance is splendid as the first big special engineered resin, heat resistance and resistance
Fire function admirable, many excellent properties such as moulding processability is good.And polyaryl thioether sulfone changes as the chain structure of polyphenylene sulfide
Property product, is likewise supplied with excellent properties similar with polyphenylene sulfide.The preparation of conducting polymer shielding material is based primarily upon at present
General-purpose plastics, engineering plastics and some non-petroleum base polymer, the performance of polymeric matrix itself limit its application field.
How using the polymeric matrix for having Good All-around Property high performance polymer base conducting polymer shielding material is prepared, widened
Its application field can be applied to the adverse circumstances such as high temperature, deep-etching, be the emphasis hair of current polymer matrix shielding material
Open up direction.
Up to the present, in conducting polymer shielding material very efficiently, the building mode of the conductive network of great prospect
One of be exactly to build conductive filler isolation structure conductive network in a polymer matrix, that is, force conductive filler that can only be distributed in tree
Interface between rouge blapharoplast is to construct conductive network.
Application No. is 201810506962.2 patents of invention to disclose the heat-resisting electromagnetic shielding material of carbon nanotube macromolecule
Preparation method, which is made of 80.0~99.9% polyphenylene sulfide and 0.1~20.0% carbon nanotube, first by polyphenylene sulfide
Ether particle and carbon nanotube are mixed by ball mill, realize carbon nanotube in the uniform cladding of polyphenylene sulfide particle surface, then
It is pressed into parison under the conditions of 20~170 DEG C, 10~1000MPa and pressing time being not less than 30s, finally in 200~400 DEG C
Sinter molding.The material not only needs to suppress, and also needs to be sintered, and preparation process is complicated, and the material being prepared is in carbon nanometer
When pipe mass percent is 5%, just close to 50dB, electromagnetic shielding performance needs further increase shield effectiveness.
Summary of the invention
For disadvantages described above, the technical problem to be solved by the present invention is to provide a kind of electromagnetic screens under low conductive filler dosage
Cover the good electromagnetic shielding composite material of performance.
Graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material, is prepared from the following parts by weight of the components
Composite material with isolation structure: 97~99.5 parts of polyphenylene sulfide, 0.5 part~3 parts of graphene nanometer sheet.
Preferably, graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material, by the component of following parts by weight
It is prepared: 97 parts of polyphenylene sulfide particle, 3 parts of graphene nanometer sheet.
The present invention also provides graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material preparation methods.
Graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material preparation method, includes the following steps:
A, graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles；
B, composite particles are hot-forming, obtain electromagnetic shielding composite material.
Preferably, polyphenylene sulfide grain diameter is 230~275 μm.
Preferably, a step is coated in a high speed mixer.
Preferably, a step concrete operations are as follows: high-speed mixer is added in polyphenylene sulfide and graphene nanometer sheet
In, it mixes at room temperature, graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles.
Preferably, the hot-press molding method of b step is as follows: 270~290 DEG C, 5~15min of hot pressing is formed under 5~10MPa.
Preferably, the hot-press molding method of b step is 290 DEG C, and hot pressing 10min is formed under 7MPa.
Compared with prior art, the invention has the following beneficial effects:
The present invention is designed by the distributed architecture of conductive filler, in conjunction with the comprehensive performance that polyphenylene sulfide itself is excellent, is used
Specific raw material, it is specific to match, it is compound to obtain the excellent high-performance special engineering resin base electro-magnetic screen of electromagnetic shielding performance
Material thoroughly solves the problems, such as that conducting polymer shielding material is dfficult to apply in the adverse circumstances such as high temperature, deep-etching.And it should
The preparation process of material is simple, and cost is relatively low, it is easy to accomplish, it is suitable for large-scale industrial production.
Detailed description of the invention
Fig. 1 is the conductive network pattern of electromagnetic shielding composite material prepared by embodiment 1.
Fig. 2 is the electromagnet shield effect of electromagnetic shielding composite material prepared by embodiment 1.
Specific embodiment
Graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material, is prepared from the following parts by weight of the components
Composite material with isolation structure: 97~99.5 parts of polyphenylene sulfide, 0.5 part~3 parts of graphene nanometer sheet.
Graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material, using polyphenylene sulfide as isolation phase matrix, graphene
Nanometer sheet obtains the graphene with isolation structure/polyphenylene sulfide electromagnetic shielding composite material as continuous phase conductive filler.It should
Composite material combines isolation structure with the polyphenylene sulfide matrix of excellent combination property, under extremely low conductive filler dosage just
It can assign composite material excellent electromagnetic shielding performance, cost can be significantly reduced, obtain the graphite for having Good All-around Property
Alkene/polyphenylene sulfide electromagnetic shielding composite material.
Preferably, graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material by following parts by weight component
It is prepared: 97 parts of polyphenylene sulfide particle, 3 parts of graphene nanometer sheet.
The present invention also provides graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material preparation methods.
Graphene of the present invention/polyphenylene sulfide electromagnetic shielding composite material preparation method, includes the following steps:
A, graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles；
B, composite particles are hot-forming, obtain electromagnetic shielding composite material.
The method of the present invention, it is then hot-forming by the way that graphene nanometer sheet to be coated on to polyphenylene sulfide particle surface in advance
Prepare the graphene/polyphenylene sulfide electromagnetic shielding composite material with isolation structure.Preparation method is simple and easy, and is prepared into
The graphene arrived/polyphenylene sulfide electromagnetic shielding composite material electromagnetic shielding performance is excellent.
For the ease of cladding and it is subsequent hot-forming, it is preferred that the partial size of the polyphenylene sulfide particle be 230~
275 μm, the partial size of more preferable polyphenylene sulfide particle is 245~270 μm.
Preferably, a step is coated in a high speed mixer.
The present invention does not have particular/special requirement to high-speed mixer, and high-speed mixer commonly used in the art is applicable, such as SHR
Series of high speed mixing machine.High-speed mixer of the invention can use commercially available.
Preferably, a step concrete operations are as follows: high-speed mixer is added in polyphenylene sulfide and graphene nanometer sheet
In, it mixes at room temperature, graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles.
B step be the composite particles are hot-forming, obtain graphene/polyphenylene sulfide electromagnetic shielding composite material.It is preferred that
, the hot-press molding method of b step is as follows: 270~290 DEG C, 5~15min of hot pressing is formed under 5~10MPa.
Preferably, the hot-press molding method of b step is 290 DEG C, and hot pressing 10min is formed under 7MPa.
A specific embodiment of the invention is further described below with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
97 parts by weight polyphenylene sulfide particles and 3 parts by weight of graphite alkene nanometer sheets are carried out in a high speed mixer mechanical total
It is mixed, so that graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains polyphenylene sulfide compound of graphene nanometer sheet cladding
Grain.Afterwards by composite particles in 290 DEG C, under conditions of 7MPa, hot pressing 10min molding obtains graphene/polyphenylene sulfide electromagnetic shielding
Composite material.The composite material has perfect isolation structure conductive network and excellent electrical property and electromagnetic shielding performance,
Conductive network shape appearance figure is shown in Fig. 1, and as can be seen from Figure 1 perfect isolation structure conductive network, measures its conductivity and electromagnetism
Shield effectiveness, conductivity are up to 76.4S/m, and electromagnet shield effect reaches 53.7dB.
Fig. 2 is the electromagnet shield effect of the composite material, it can be seen that in X-band frequency range, composite material has
Excellent electromagnetic shielding performance.
Embodiment 2
99.5 parts by weight polyphenylene sulfide particles and 0.5 parts by weight of graphite alkene nanometer sheet are subjected to machinery in a high speed mixer
It is blended, graphene nanometer sheet is made to be coated on polyphenylene sulfide particle surface, the polyphenylene sulfide for obtaining graphene nanometer sheet cladding is compound
Particle.Afterwards by composite particles in 270 DEG C, under conditions of 10MPa, hot pressing 15min molding obtains graphene/polyphenylene sulfide electromagnetism
Shielding composite.The composite material has perfect isolation structure conductive network and excellent electrical property and electromagnetic wave shielding
Can, conductivity 1.7S/m, electromagnet shield effect 18.9dB.
Embodiment 3
98 parts by weight polyphenylene sulfide particles and 2 parts by weight of graphite alkene nanometer sheets are carried out in a high speed mixer mechanical total
It is mixed, so that graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains polyphenylene sulfide compound of graphene nanometer sheet cladding
Grain.Afterwards by composite particles in 290 DEG C, under conditions of 10MPa, hot pressing 5min molding obtains graphene/polyphenylene sulfide electromagnetic shielding
Composite material.The composite material has perfect isolation structure conductive network and excellent electrical property and electromagnetic shielding performance,
Its conductivity is 36.3S/m, electromagnet shield effect 41.3dB.
Embodiment 4
99 parts by weight polyphenylene sulfide particles and 1 parts by weight of graphite alkene nanometer sheet are carried out in a high speed mixer mechanical total
It is mixed, so that graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains polyphenylene sulfide compound of graphene nanometer sheet cladding
Grain.Afterwards by composite particles in 280 DEG C, under conditions of 8MPa, hot pressing 8min molding obtains graphene/polyphenylene sulfide electromagnetic shielding
Composite material.The composite material has perfect isolation structure conductive network and excellent electrical property and electromagnetic shielding performance,
Its conductivity is 21.7S/m, electromagnet shield effect 36.7dB.
Claims (8)
1. graphene/polyphenylene sulfide electromagnetic shielding composite material, it is characterised in that: the composite material is by the group of following parts by weight
The composite material with isolation structure point being prepared: 97~99.5 parts of polyphenylene sulfide, 0.5 part~3 parts of graphene nanometer sheet.
2. graphene according to claim 1/polyphenylene sulfide electromagnetic shielding composite material, it is characterised in that: by following heavy
The component of amount part is prepared: 97 parts of polyphenylene sulfide particle, 3 parts of graphene nanometer sheet.
3. graphene of any of claims 1 or 2/polyphenylene sulfide electromagnetic shielding composite material preparation method, which is characterized in that
Include the following steps:
A, graphene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles；
B, composite particles are hot-forming, obtain electromagnetic shielding composite material.
4. graphene according to claim 3/polyphenylene sulfide electromagnetic shielding composite material preparation method, feature exist
In: polyphenylene sulfide grain diameter is 230~275 μm.
5. graphene according to claim 3 or 4/polyphenylene sulfide electromagnetic shielding composite material preparation method, feature
Be: a step is coated in a high speed mixer.
6. graphene according to claim 5/polyphenylene sulfide electromagnetic shielding composite material preparation method, feature exist
In: a step concrete operations are as follows: polyphenylene sulfide and graphene nanometer sheet are added in high-speed mixer, mix at room temperature, by stone
Black alkene nanometer sheet is coated on polyphenylene sulfide particle surface, obtains composite particles.
7. graphene according to claim 3/polyphenylene sulfide electromagnetic shielding composite material preparation method, feature exist
In: the hot-press molding method of b step is as follows: 270~290 DEG C, 5~15min of hot pressing is formed under 5~10MPa.
8. graphene according to claim 7/polyphenylene sulfide electromagnetic shielding composite material preparation method, feature exist
In: 290 DEG C, hot pressing 10min is formed under 7MPa.
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| CN112848586A (en) * | 2020-12-30 | 2021-05-28 | 中国科学院长春应用化学研究所 | Multilayer electromagnetic shielding composite material based on isolation structure and preparation method and application thereof |
| CN114605831A (en) * | 2022-03-30 | 2022-06-10 | 许晓粉 | Anti-erosion magnetic shielding rubber and preparation method thereof |
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