CN109575595A - A kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material - Google Patents
A kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material Download PDFInfo
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- CN109575595A CN109575595A CN201710912110.9A CN201710912110A CN109575595A CN 109575595 A CN109575595 A CN 109575595A CN 201710912110 A CN201710912110 A CN 201710912110A CN 109575595 A CN109575595 A CN 109575595A
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- polyetherimide
- graphene
- barium titanate
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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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
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Abstract
The invention discloses a kind of preparation methods of polyetherimide/barium titanate/graphene dielectric composite material, specifically comprise the following steps: 1) by a certain percentage, by ethyl alcohol and polyetherimide mixed preparing polyetherimide solution, using physical dispersion method by graphene and barium titanate (BaTiO3, BT) it is dispersed in polyetherimide solution, through supersonic cell pulverization process 20-25min, polyetherimide/barium titanate/graphene mixed solution is obtained；2) then mixed solution is added curing agent, is uniformly mixed through being heat-treated 2-2.5 h under 90-100 DEG C of vacuum condition to exclude alcohol solvent and water, obtains curing system；3) curing system vacuum degassing 30-35min at room temperature, then the heat cure 4-5 h at 45-55 DEG C solidify 5-6h at 90-100 DEG C, obtain polyetherimide/barium titanate/graphene composite material.This method simple process, short preparation period, what is be prepared is high to composite material dielectric constant.
Description
Technical field
The present invention relates to dielectric composite material preparation technical field, specifically a kind of polyetherimide/barium titanate/graphene
The preparation method of dielectric composite material.
Background technique
High molecular material has the advantages that very much, and performance is very excellent, as intensity height, light weight, processing performance are good, electrical
Good insulation preformance, good toughness and cheap etc., are being widely used in many fields.But high molecular material
Poor processability, loss of properties on aging, high-temperature behavior is poor, has certain limitation, easy stress relaxation and creep in terms of intensity, is situated between
Electric constant is low.Scientific and technological great development drives the progress of every profession and trade since 21 century, make the materials'use of traditional polymer by
Limitation is arrived.At this moment high molecular material and metal material, inorganic non-metallic material it is effective compound, high molecular polymerization can be improved
Some performances of object material, as workability, dielectric properties be sharply increased and the raising of mechanical property, make high molecular material
Application obtained very big widen.
What high dielectric material mainly included has the inorganic material of high dielectric property, such as ceramic material BaTiO3, and there are also high
The macromolecule polymer material of dielectric properties.Currently preparing the main method of high dielectric constant material is exactly, by dielectric ceramic or
The functives such as conductive filler are added in high molecular polymer matrix and composite material are made.However dielectric ceramic/polymer is compound
Material and conductor/polymer composites be all it is with their own characteristics, the former goes for high dielectric constant generally height should be added containing
The dielectric ceramic of amount is unfavorable for processing, and sintering temperature is excessively high, while it is also possible to the flexibility of material and mechanical performance being caused to become
Difference, service life and stability of material can all decline, and the dielectric loss of the latter is relatively high.Then, a large amount of conductor/dielectric
Ceramic/polymer trielement composite material starts to be developed.High dielectric ceramic, conducting particles are either added to simultaneously respectively poly-
It closes in object matrix, the material of dielectric properties with higher can be obtained.Therefore, by ceramic particle (low-loss) and conductive particle
Sub (Gao Jie electricity) mixing, then it is compound with high molecular polymer, this, which becomes, prepares high dielectric, one kind of low-loss composite material more
Suitable method.
Graphene all has good performance at many aspects, and the loading of graphene very little also can significantly improve compound
The various aspects of performance of material.Graphene has the advantages that nanometer silicon wafer and carbon nanotube simultaneously, and such graphene is improving polymerization
Conduction, the heating conduction of polymer material can also be improved while object material mechanical performance.It is superior just because of graphene
Chemical and physical properties, the application in new material are especially extensive.
Summary of the invention
The purpose of the present invention is to provide a kind of preparations of polyetherimide/barium titanate/graphene high-dielectric composite material
Method, this method simple process, short preparation period, what is be prepared is high to composite material dielectric constant.
Realizing the technical solution of the object of the invention is:
A kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material, specifically comprises the following steps:
It 1), will using physical dispersion method by a certain percentage, by ethyl alcohol and polyetherimide mixed preparing polyetherimide solution
Graphene and barium titanate (BaTiO3, BT) are dispersed in polyetherimide solution, through supersonic cell pulverization process 20-
25min obtains polyetherimide/barium titanate/graphene mixed solution；
2) mixed solution is through being heat-treated 2-2.5 h under 90-100 DEG C of vacuum condition, to exclude alcohol solvent and water, is then added solid
Agent is uniformly mixed, and obtains curing system；
3) curing system vacuum degassing 30-35min at room temperature, then the heat cure 4-5 h at 45-55 DEG C, at 90-100 DEG C
Solidify 5-6h, obtains polyetherimide/barium titanate/graphene composite material.
In step 1), the mass ratio of the polyetherimide and ethyl alcohol is 4:1.
In step 1), the polyetherimide, barium titanate, graphene mass ratio be 100:10-15:0.5-2.
The utility model has the advantages that a kind of preparation side of polyetherimide/high composite of barium titanate/graphene provided by the invention
Method, this method simple process, short preparation period, what is be prepared is high to composite material dielectric constant.
Specific embodiment
The present invention is further elaborated below with reference to embodiment, but is not limitation of the invention.
Embodiment 1:
A kind of preparation method of polyetherimide/high composite of barium titanate/graphene, specifically comprises the following steps:
It 1), will using physical dispersion method by a certain percentage, by ethyl alcohol and polyetherimide mixed preparing polyetherimide solution
Graphene and barium titanate (BaTiO3, BT) are dispersed in polyetherimide solution, through supersonic cell pulverization process 20min,
Obtain polyetherimide/barium titanate/graphene mixed solution；
2) mixed solution is heat-treated 2h under 90 DEG C of vacuum conditions, and to exclude alcohol solvent and water, curing agent is then added, stirring
It is uniformly mixed, obtains curing system；
3) curing system vacuum degassing 30min at room temperature, then 4 h of heat cure at 45 DEG C solidify 5h at 90 DEG C, are gathered
Etherimide/barium titanate/graphene composite material.
In step 1), the mass ratio of the polyetherimide and ethyl alcohol is 4:1.
In step 1), the polyetherimide, barium titanate, graphene mass ratio be 100:10:0.5.
Embodiment 2:
A kind of preparation method of polyetherimide/high composite of barium titanate/graphene, specifically comprises the following steps:
It 1), will using physical dispersion method by a certain percentage, by ethyl alcohol and polyetherimide mixed preparing polyetherimide solution
Graphene and barium titanate (BaTiO3, BT) are dispersed in polyetherimide solution, through supersonic cell pulverization process 25min,
Obtain polyetherimide/barium titanate/graphene mixed solution；
2) mixed solution is heat-treated 2.5 h under 100 DEG C of vacuum conditions, and to exclude alcohol solvent and water, curing agent is then added,
It is uniformly mixed, obtains curing system；
3) curing system vacuum degassing 35min at room temperature, then 5 h of heat cure at 55 DEG C solidify 6h at 100 DEG C, obtain
Polyetherimide/barium titanate/graphene composite material.
In step 1), the mass ratio of the polyetherimide and ethyl alcohol is 4:1.
In step 1), the polyetherimide, barium titanate, graphene mass ratio be 100:15:1.
Claims (3)
1. a kind of polyetherimide/barium titanate/graphene high composite preparation method, which is characterized in that specifically include
Following steps:
It 1), will using physical dispersion method by a certain percentage, by ethyl alcohol and polyetherimide mixed preparing polyetherimide solution
Graphene and barium titanate (BaTiO3, BT) are dispersed in polyetherimide solution, through supersonic cell pulverization process 20-
25min obtains polyetherimide/barium titanate/graphene mixed solution；
2) mixed solution is through being heat-treated 2-2.5 h under 90-100 DEG C of vacuum condition, to exclude alcohol solvent and water, is then added solid
Agent is uniformly mixed, and obtains curing system；
3) curing system vacuum degassing 30-35min at room temperature, then the heat cure 4-5 h at 45-55 DEG C, at 90-100 DEG C
Solidify 5-6h, obtains polyetherimide/barium titanate/graphene composite material.
2. a kind of preparation method of polyetherimide/high composite of barium titanate/graphene according to claim 1,
It is characterized in that, the mass ratio of the polyetherimide and ethyl alcohol is 4:1 in step 1).
3. a kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material according to claim 1,
It is characterized in that, in step 1), the polyetherimide, barium titanate, graphene mass ratio be 100:10-15:0.5-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710912110.9A CN109575595A (en) | 2017-09-29 | 2017-09-29 | A kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material |
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| CN201710912110.9A CN109575595A (en) | 2017-09-29 | 2017-09-29 | A kind of preparation method of polyetherimide/barium titanate/graphene dielectric composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110279895A (en) * | 2019-06-28 | 2019-09-27 | 江西理工大学 | A kind of l-lactic acid composite material and preparation method of barium titanate and graphene oxide collaboration enhancing |
| CN112280297A (en) * | 2020-10-26 | 2021-01-29 | 中国海洋大学 | Barium titanate/polyetherimide dielectric composite material and preparation method thereof |
| CN112457770A (en) * | 2020-11-20 | 2021-03-09 | 金陵科技学院 | Preparation method, application and test method of graphene modified coating material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675779A (en) * | 2012-05-10 | 2012-09-19 | 北京科技大学 | High-dielectric-constant three-phase composite material containing modified graphene and preparation method thereof |
| CN104211962A (en) * | 2014-09-10 | 2014-12-17 | 北京化工大学常州先进材料研究院 | High dielectric polyimide composite material and preparation method thereof |
-
2017
- 2017-09-29 CN CN201710912110.9A patent/CN109575595A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675779A (en) * | 2012-05-10 | 2012-09-19 | 北京科技大学 | High-dielectric-constant three-phase composite material containing modified graphene and preparation method thereof |
| CN104211962A (en) * | 2014-09-10 | 2014-12-17 | 北京化工大学常州先进材料研究院 | High dielectric polyimide composite material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110279895A (en) * | 2019-06-28 | 2019-09-27 | 江西理工大学 | A kind of l-lactic acid composite material and preparation method of barium titanate and graphene oxide collaboration enhancing |
| CN110279895B (en) * | 2019-06-28 | 2022-03-11 | 江西理工大学 | Barium titanate and graphene oxide synergistically enhanced levorotatory polylactic acid composite material and preparation method thereof |
| CN112280297A (en) * | 2020-10-26 | 2021-01-29 | 中国海洋大学 | Barium titanate/polyetherimide dielectric composite material and preparation method thereof |
| CN112457770A (en) * | 2020-11-20 | 2021-03-09 | 金陵科技学院 | Preparation method, application and test method of graphene modified coating material |
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Application publication date: 20190405 |