CN109721945A - A kind of high-dielectric constant inorganic foamed resin based composites substrate and preparation method thereof - Google Patents
A kind of high-dielectric constant inorganic foamed resin based composites substrate and preparation method thereof Download PDFInfo
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- CN109721945A CN109721945A CN201910039511.7A CN201910039511A CN109721945A CN 109721945 A CN109721945 A CN 109721945A CN 201910039511 A CN201910039511 A CN 201910039511A CN 109721945 A CN109721945 A CN 109721945A
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Abstract
The present invention is intended to provide a kind of high-dielectric constant inorganic foamed resin based composites substrate and preparation method thereof, it is combined by inorganic foamed and graphene phenolic-resin, wherein inorganic foamed volume fraction is 2~10%, phenolic resin volume fraction is 90~97%, graphene volume fraction is 1~8%, and density is 0.8~1.5g/cm3, pyrolysis melamine foamed plastic obtains carbon foam under nitrogen protection first, is then poured carbon foam with graphene phenol-formaldehyde resin modified, and last elevated cure composite foam obtains inorganic foamed polymer matrix composites substrate.Beneficial effects of the present invention: the present invention is by compound by carbon foam and graphene phenolic-resin, and while the inorganic foamed polymer matrix composites substrate of preparation is the advantages that possessing lightweight, good craftsmanship and toughness, ionic conductivity is big, and dielectric properties are excellent.
Description
Technical field
The present invention relates to a kind of high dielectric constant polymer composite material and preparation method, in particular to a kind of high dielectric
Inorganic foamed polymer matrix composites substrate of constant and preparation method thereof.
Background technique
High dielectric constant material is one of the research hotspot of current field of functional materials, in electronic component, machinery, boat
The fields such as empty space flight and biomedicine have huge application value.Relative to traditional high-dielectric constant inorganic material, polymerization
Object based composites are had received widespread attention with its lightweight, good craftsmanship and toughness.
Traditional high dielectric ceramic material high production cost, matter is crisp, not easy to be processed and miniaturized design.In contrast, gather
Object material itself is closed in addition to good mechanical strength, light flexible outer, also there is the low, good film-forming property of loss and low in cost etc. excellent
Point.Therefore, current information function is become with low cost production new high dielectric constant, low-dielectric loss polymer dielectric material
The research hotspot of energy material, has real application value and wide application prospect.In recent years, as a milestone, carbon materials
Expect that family is receive more and more attention because of its excellent mechanical performance, electric conductivity and thermal conductivity and studies.Commonly receive
Rice carbon material includes graphene (GR), carbon nanotube (CNT), carbon nano-fiber (CNF), carbon black (CB), expanded graphite (EG) etc..
Authorization Notice No. is that the Chinese invention patent of 102675779 A of CN is related to dielectric substance field, it is desirable to provide one
Kind contains modified graphene high dielectric constant three-phase composite material and preparation method, the polymer-based dielectric composite material
By three phase compositions: being that polymeric matrix Kynoar and filler grain barium titanate and polyaniline in eigenstate are modified respectively
Graphene particle.By introducing modified graphene particle, the content of reduced ceramic particle into composite material.Using solwution method
Polymer and inorganic particulate progress is compound, machine-shaping is carried out to composite material using heat pressing process, is finally obtained inorganic/poly-
Close object three-phase composite material.The composite material that the invention provides has dielectric constant is high, adhesive property is good, preparation process is simple etc.
Advantage
Authorization Notice No. is that the Chinese invention patent of 106432989 A of CN is related to technical field of composite materials, it is desirable to provide a kind of
High dielectric titanium dioxide/carbon/polymer composites and preparation method thereof.The composite material is with Kynoar-hexafluoro third
Alkene is matrix, using three-dimensional flower-shaped titanium dioxide/carbon composite construction particle as packing material, by solution blending, is cast, is hot pressed into
It is obtained after type；Wherein, the three-dimensional flower-shaped titanium dioxide/carbon composite construction particle quality accounts for the 11.5 of the total matter of composite material
~37.5%.The composite material forms the principle of local micro-capacitor using carbon and titanium dioxide granule in system, lower
It can reach higher dielectric constant under volume filling fraction.Preparation method simple process, strong operability can be filled out by control
The phosphorus content and volume fraction of material adjust dielectric properties, and maintain good flexibility and processing performance, can be used for embedded
The manufacture of the elements such as capacitor, energy-storage capacitor, flexible display device, has broad application prospects.
Foregoing invention gives some thinkings for preparing high dielectric constant polymer composite material, by introducing modified graphite
Alkene reduces ceramic particle content.In order to enhance the mechanical property and electric property of high dielectric constant polymer composite material, expand
Application field, therefore it is based on the demand, propose the technical solution in the present invention.
Summary of the invention
The technical problem to be solved in the present invention overcomes the shortcomings of the prior art, and provides a kind of high-dielectric constant inorganic bubble
Foam polymer matrix composites substrate and preparation method thereof is combined, wherein inorganic by inorganic foamed and graphene phenolic-resin
Foam volume score is 2~10%, and phenolic resin volume fraction is 90~97%, and graphene volume fraction is 1~8%, and density is
0.8~1.5g/cm3, which comprises the following sequential steps:
(1) melamine foamed plastic is placed in crucible, is warming up to 500~1200 DEG C of pyrolysis under the protection of nitrogen, take out to
With；
(2) 70~80 parts of formaldehyde is successively added into reaction kettle, 20~30 parts of phenol is kept for 60~80 DEG C of kettle temperature,
Mechanical stirring under 2500~3000rpm revolving speed；
(3) successively it is added the sodium hydroxide of volume fraction 0.5~2% into mixed solution obtained by step (2), volume fraction 1~
10% graphene oxide is kept for 60~80 DEG C of kettle temperature, keeps the temperature 2 ~ 5 hours；
It (4) will be in the resulting foam of the resulting resin-cast step (1) of step (3)；
(5) step (4) resulting composite foam is warming up under the protection of nitrogen 150~180 DEG C, Gao Jie is obtained after solidification
The inorganic foamed polymer matrix composites substrate of electric constant.
The beneficial technical effect of the present invention lies in:
By the way that carbon foam and graphene phenolic-resin is compound, the inorganic foamed polymer matrix composites substrate of preparation exists the present invention
While the advantages that possessing lightweight, good craftsmanship and toughness, ionic conductivity is big, and dielectric properties are excellent.
Specific embodiment
Combined with specific embodiments below, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to various equivalences of the invention
It is as defined in the appended claims that the modification of form falls within the application.
Embodiment 1
(1) melamine foamed plastic is placed in crucible, 1200 DEG C of pyrolysis is warming up under the protection of nitrogen, taken out stand-by；
(2) 70 parts of formaldehyde is successively added into reaction kettle, 20 parts of phenol is kept for 60 DEG C of kettle temperature, under 3000rpm revolving speed
Mechanical stirring；
(3) sodium hydroxide of volume fraction 2%, the oxidation of volume fraction 10% are successively added into mixed solution obtained by step (2)
Graphene is kept for 80 DEG C of kettle temperature, keeps the temperature 5 hours；
It (4) will be in the resulting foam of the resulting resin-cast step (1) of step (3)；
(5) step (4) resulting composite foam is warming up under the protection of nitrogen 180 DEG C, high dielectric constant is obtained after solidification
Inorganic foamed polymer matrix composites substrate.
Embodiment 2
(1) melamine foamed plastic is placed in crucible, 500 DEG C of pyrolysis is warming up under the protection of nitrogen, taken out stand-by；
(2) 70 parts of formaldehyde is successively added into reaction kettle, 20 parts of phenol is kept for 60 DEG C of kettle temperature, under 2500rpm revolving speed
Mechanical stirring；
(3) sodium hydroxide of volume fraction 0.5%, the oxygen of volume fraction 1% are successively added into mixed solution obtained by step (2)
Graphite alkene is kept for 60 DEG C of kettle temperature, keeps the temperature 2 hours；
It (4) will be in the resulting foam of the resulting resin-cast step (1) of step (3)；
(5) step (4) resulting composite foam is warming up under the protection of nitrogen 150 DEG C, high dielectric constant is obtained after solidification
Inorganic foamed polymer matrix composites substrate.
It above are only two specific embodiments of the invention, but the design concept of the present invention is not limited to this, all benefits
It is made a non-material change to the present invention with this design, should belong to the behavior for invading the scope of protection of the invention.But it is all
Without departing from the content of technical solution of the present invention, according to the technical essence of the invention any type of letter to the above embodiments
Single modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention.
Claims (1)
1. a kind of high-dielectric constant inorganic foamed resin based composites substrate and preparation method thereof, by inorganic foamed and graphene
Phenolic resin is combined, wherein inorganic foamed volume fraction is 2~10%, phenolic resin volume fraction is 90~97%, graphite
Alkene volume fraction is 1~8%, and density is 0.8~1.5g/cm3, which includes following sequence step
It is rapid:
(1) melamine foamed plastic is placed in crucible, is warming up to 500~1200 DEG C of pyrolysis under the protection of nitrogen, take out to
With；
(2) 70~80 parts of formaldehyde is successively added into reaction kettle, 20~30 parts of phenol is kept for 60~80 DEG C of kettle temperature,
Mechanical stirring under 2500~3000rpm revolving speed；
(3) successively it is added the sodium hydroxide of volume fraction 0.5~2% into mixed solution obtained by step (2), volume fraction 1~
10% graphene oxide is kept for 60~80 DEG C of kettle temperature, keeps the temperature 2 ~ 5 hours；
It (4) will be in the resulting foam of the resulting resin-cast step (1) of step (3)；
(5) step (4) resulting composite foam is warming up under the protection of nitrogen 150~180 DEG C, Gao Jie is obtained after solidification
The inorganic foamed polymer matrix composites substrate of electric constant.
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| CN201910039511.7A CN109721945A (en) | 2019-01-16 | 2019-01-16 | A kind of high-dielectric constant inorganic foamed resin based composites substrate and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110730606A (en) * | 2019-09-23 | 2020-01-24 | 西安建筑科技大学 | Carbon foam electromagnetic shielding material, preparation method and application thereof |
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