CN110305443A - A kind of graphene composite heat conducting material and preparation method thereof - Google Patents
A kind of graphene composite heat conducting material and preparation method thereof Download PDFInfo
- Publication number
- CN110305443A CN110305443A CN201910476725.0A CN201910476725A CN110305443A CN 110305443 A CN110305443 A CN 110305443A CN 201910476725 A CN201910476725 A CN 201910476725A CN 110305443 A CN110305443 A CN 110305443A
- Authority
- CN
- China
- Prior art keywords
- weight
- graphene
- parts
- heat conduction
- conducting material
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to Heat Conduction Material technical fields, and in particular to a kind of graphene composite heat conducting material and preparation method thereof, Heat Conduction Material, including heat conduction inorganic filler, graphene, resin, weight ratio 60-80:0.5-1.5:15-35.Heat Conduction Material of the invention promotes the processing performance of high molecular material itself while heating conduction is substantially improved, and heating conduction is stablized, and cost is lower.
Description
Technical field
The invention belongs to Heat Conduction Material technical fields, and in particular to a kind of graphene composite heat conducting material and its preparation side
Method.
Background technique
Conventional thermal conductive plastics mainly carry out macromolecule matrix material with the metal of high thermal conductivity or inorganic filler particle equal
Even filling.When amount of filler reaches a certain level, filler forms similar chain and netted form in system, that is, is formed and led
Heat supply network chain.When the differently- oriented directivity of these thermally conductive network chains is parallel with direction of heat flow, leading for system will be largely improved
It is hot.
Graphene is a kind of Novel Carbon Nanomaterials of individual layer laminated structure being made of carbon atom, and thickness is only 0.35
nm.Since it is with big specific surface area, good thermal stability and chemical stability, stronger hydrophobicity, being easy to
The advantages that learning modification, is expected in high performance electronics, composite material, field emmision material, gas sensor and energy stores etc.
Field is widely applied.And it is formed by sp2 hydbridized carbon atoms close-packed arrays, has unique two-dimension periodic honeycomb
Lattice structure, the Stable Carbon hexatomic ring in the presence of structural unit assign its excellent hot property, it is considered to be outstanding heat
Control material.
It can satisfy heat management, electronics industry middle-high density, high integration by the high thermal conductivity plastics of filler of graphene
Assemble the requirement of development.Such as the thermal conductivity of pure polyamide 6 (PA6) is 0.338 W/ (mK), when the aluminium oxide of filling 50%
When, the thermal conductivity of composite material is 1.57 times of pure PA6；When adding 25% modified zinc oxide, the thermal conductivity ratio of composite material
Pure PA6 improves 3 times；And when adding 20% graphene nanometer sheet, the thermal conductivity of composite material reaches 4.11 W/ (mK),
Improve 15 times or more than pure PA6, this present graphene field of heat management huge applications potentiality.
Such as Chinese invention patent one kind disclosed on July 13rd, 2018 that patent publication No. is CN108276770A changes
Property white graphite alkene/polyamide composite heat conducting material and preparation method thereof, but after filler is added, the toughness and processing performance of material
It will receive and seriously affect.
Summary of the invention
An object of the present invention is to provide a kind of graphene composite heat conducting material, by being added in thermally conductive inorganic substrate
Graphene, and phenolic group resin is added simultaneously, while introducing heating conduction, maintain the processability of high molecular material itself
Energy.
To achieve the above object, the present invention adopts the following technical scheme: a kind of graphene composite heat conducting material, including it is thermally conductive
Inorganic filler, graphene, resin.
Further preferably, heat conduction inorganic filler, graphene, resin weight ratio be 60-80:0.5-1.5:15-35.
Further preferably, a kind of graphene composite heat conducting material, including heat conduction inorganic filler 60-78 parts by weight, plasticizer
10 parts by weight, 5 parts by weight of modifying agent gather 2-5 parts by weight, phenolic group resin 20-35 parts by weight in oneself.
Heat filling can be aluminium oxide, magnesia, zinc oxide, aluminium nitride, boron nitride, silicon carbide etc..
In the prior art, it is added in resin using heat conduction inorganic filler, although improving heating conduction, resin sheet
The processing performance of body is largely influenced.In above scheme of the invention, by being first added before heat conduction inorganic filler is added
Graphene can overcome because the addition of heat conduction inorganic filler is to the defect for reducing substrate performance itself.It may also reach up substantially
Degree improves the effect of heating conduction.
The resin can be any resin, preferably phenolic group resin.
Preferably, the graphene is made by the following method:
S1. expansible graphite is subjected to microwave bulking, obtains extruding state graphite；
S2. dispersing agent is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. liquid aquadag is subjected to intercalation stripping and operates n times, obtain graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
The essence of microwave method and conventional high-temperature extruding method is consistent, is all to make graphite expansion by heating, but traditional height
Warm extruding is to be heated by way of the heat transfer of surface to graphite, and the thermal energy needed is more, and the time of extruding is longer, extruding
Effect is limited；And microwave is then to be converted into heat by the polar molecule interaction penetrated between microwave and graphite in graphite
Can, so that each section in graphite be made to heat up with heat is obtained in a flash, extruding is thorough, and effect is more preferable.
The graphene nanosheet of above method preparation preparation, is easier to disperse in the substrate, and stably dispersing, will not
Second Aggregation.
Preferably, the microwave frequency that microwave bulking uses is 2.1-2.5GHz.
Preferably, the microwave bulking time is 3-5min.
Preferably, dispersing agent is one of acetone, ethyl alcohol, DMF, water or a variety of.
Preferably, the mixing of the phenolic group resin and graphene nanosheet, mixing mass ratio 0.1-0.5:10.
By implementing above-mentioned technical proposal, Heat Conduction Material of the invention is while being substantially improved heating conduction, boosted tree
The processing performance of rouge itself, heating conduction are stablized, and cost is lower.
The second object of the present invention is to provide the preparation method of above-mentioned graphene composite heat conducting material, include the following steps:
1. graphene nanosheet is added in resin, modified resin is obtained；
2. heat conduction inorganic filler is added to modified resin, graphene composite heat conducting material is obtained.
By above-mentioned preparation method, convenient for operation, the processing performance of resulting Heat Conduction Material is more stable.
Specific embodiment
Below by embodiment, the present invention is described in further detail, following embodiment be explanation of the invention and
The invention is not limited to following embodiments.
It should be noted that above content is only illustrations made for the present invention described in this specification.
Those skilled in the art can make various modifications or additions to the described embodiments or
It is substituted in a similar manner, content without departing from description of the invention or surmounts model defined in the claims
It encloses, is within the scope of protection of the invention.
Embodiment 1:
A kind of graphene composite heat conducting material, 60 parts by weight of heat conduction inorganic filler aluminium oxide, 0.5 weight of graphene nanosheet
Part, 20 parts by weight of phenolic group resin, 10 parts by weight of plasticizer, 5 parts by weight of modifying agent gather 2 parts by weight in oneself.
Preparation method includes the following steps:
1. dispersion liquid is made in graphene nanosheet, phenolic group resin high temperature melt is at liquid；Graphene nanosheet uses
Graphene nanosheet on existing market；
2. phenolic group resin is added in graphene nanosheet dispersion liquid, stir evenly；
3. heat conduction inorganic filler, modifying agent, gathers and is added in the resulting mixed liquor of step 2 in oneself plasticizer, heat preservation is cooled to
30℃。
4. the cooled product of step 3, washed, filtering, dry graphene Heat Conduction Material.
Embodiment 2:
A kind of graphene composite heat conducting material, 80 parts by weight of heat conduction inorganic filler magnesia, 1.5 weight of graphene nanosheet
Part, gathers oneself 5 parts by weight at 35 parts by weight of phenolic group resin, 10 parts by weight of plasticizer, 5 parts by weight of modifying agent.
Graphene nanosheet used in the present embodiment is made by the following method:
S1. expansible graphite is subjected to microwave bulking, for 2.5GHz, the microwave bulking time is the microwave frequency that microwave bulking uses
5min obtains extruding state graphite；
S2. dispersing agent acetone is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. level-one graphite is carried out intercalation stripping to operate 5 times, obtains graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
Embodiment 3:
A kind of graphene composite heat conducting material, 70 parts by weight of heat conduction inorganic filler boron nitride, 10 parts by weight of plasticizer, modifying agent 5
Parts by weight gather 5 parts by weight, phenolic group resin 20-35 parts by weight, 0.5 parts by weight of graphene nanosheet in oneself.
Graphene nanosheet in the present embodiment is made by the following method:
S1. expansible graphite is subjected to microwave bulking, the microwave frequency that microwave bulking uses is 2.1GHz, the microwave bulking time
4min obtains extruding state graphite；
S2. ethyl alcohol is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. level-one graphite is carried out intercalation stripping to operate 3 times, obtains graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
Embodiment 4:
A kind of graphene composite heat conducting material, 75 parts by weight of heat conduction inorganic filler magnesia, 10 parts by weight of plasticizer, modifying agent 5
Parts by weight gather 5 parts by weight, 20 parts by weight of phenolic group resin, 0.5 parts by weight of graphene nanosheet in oneself.
Graphene nanosheet in the present embodiment is made by the following method:
S1. expansible graphite is subjected to microwave bulking, the microwave frequency that microwave bulking uses is 2.2GHz, the microwave bulking time
5min obtains extruding state graphite；
S2. ethyl alcohol is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. level-one graphite is carried out intercalation stripping to operate 4 times, obtains graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
Embodiment 5:
A kind of graphene composite heat conducting material, 75 parts by weight of heat conduction inorganic filler aluminium oxide, 10 parts by weight of plasticizer, modifying agent 5
Parts by weight gather 5 parts by weight, 20 parts by weight of phenolic group resin, 0.5 parts by weight of graphene nanosheet in oneself.
Graphene nanosheet in the present embodiment is made by the following method:
S1. expansible graphite is subjected to microwave bulking, the microwave frequency that microwave bulking uses is 2.2GHz, the microwave bulking time
3.5min obtains extruding state graphite；
S2. acetone is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. level-one graphite is carried out intercalation stripping to operate 4 times, obtains graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
Comparative example 1:
It is with the difference of embodiment 1, a kind of graphene composite heat conducting material, 60 parts by weight of heat conduction inorganic filler, graphene are received
0.5 parts by weight of rice microplate, 10 parts by weight of plasticizer, 5 parts by weight of modifying agent, gather 2 weight in oneself at 20 parts by weight of phenolic group resin
Part.
Comparative example 2:
It is with the difference of embodiment 1,60 parts by weight of heat conduction inorganic filler, 0.1 parts by weight of graphene nanosheet, phenolic aldehyde Ji Shu
20 parts by weight of rouge, 5 parts by weight of modifying agent, gather 2 parts by weight in oneself at 10 parts by weight of plasticizer.
Comparative example 3:
It is with the difference of embodiment 1,60 parts by weight of heat conduction inorganic filler, 15 parts by weight of graphene nanosheet, phenolic aldehyde Ji Shu
20 parts by weight of rouge, 5 parts by weight of modifying agent, gather 2 parts by weight in oneself at 10 parts by weight of plasticizer.
Comparative example 4:
It is with the difference of embodiment 1,0.5 parts by weight of graphene nanosheet, 20 parts by weight of phenolic group resin, 10 weight of plasticizer
Amount part, 5 parts by weight of modifying agent gather 2 parts by weight in oneself.
Performance detection, testing result such as table 1 are carried out to the resulting Heat Conduction Material of embodiment and comparative example.
| Thermal conductivity/W/ (m K) | Thermal decomposition temperature/DEG C | 500 DEG C of ablation weight-loss ratio/% | |
| Embodiment 1 | 4.26 | 388 | 42.5 |
| Embodiment 2 | 4.29 | 398 | 43.8 |
| Embodiment 3 | 4.32 | 406 | 38.7 |
| Embodiment 4 | 5.04 | 396 | 7.4 |
| Embodiment 5 | 4.98 | 418 | 7.8 |
| Embodiment 6 | 5.04 | 422 | 7.6 |
| Comparative example 1 | 0.33 | 322 | 52.1 |
| Comparative example 2 | 4.17 | 306 | 55.6 |
| Comparative example 3 | 4.32 | 311 | 54.7 |
| Comparative example 4 | 2.99 | 388 | 42.5 |
Comparative example 1 is compared with Example 1: thermal conductivity is poor compared with embodiment 1, and the mechanical performance of Heat Conduction Material is also by shadow
It rings, than the difference of embodiment 1.
Comparative example 2 is compared with Example 1: by reducing graphene dosage, although thermal conductivity can be flushed with embodiment 1,
But the mechanical performance of Heat Conduction Material is impacted larger, substantially less than embodiment 1.
Comparative example 3 is compared with Example 1: although increasing graphene dosage, thermal conductivity compares embodiment 1, not
It improves, and the mechanicalness of Heat Conduction Material is worse, is lower than embodiment 1.
Comparative example 4 is compared with Example 1: not using inorganic filler, the level of embodiment 1, heat conduction material is not achieved in thermal conductivity
The mechanicalness and embodiment 1 of material are suitable.
Claims (6)
1. a kind of graphene composite heat conducting material, which is characterized in that including heat conduction inorganic filler, graphene nanosheet, phenolic aldehyde
Base resin, heat conduction inorganic filler, graphene nanosheet, the weight ratio of phenolic group resin are 60-80:0.5-1.5:15-35.
2. a kind of graphene composite heat conducting material according to claim 1, which is characterized in that the graphene nanosheet is logical
Following method is crossed to be made:
S1. expansible graphite is subjected to microwave bulking, obtains extruding state graphite；
S2. dispersing agent is added into the extruding state graphite, carries out vacuum outgas, obtains liquid aquadag；
S3. S2 liquid aquadag is subjected to intercalation stripping and operates n times, obtain graphene slurry；
S4. spray-dried, obtain graphene nanosheet.
3. a kind of graphene composite heat conducting material according to claim 1, which is characterized in that heat conduction inorganic filler 60-78 weight
Amount part, 5 parts by weight of modifying agent, gathers 2-5 parts by weight, phenolic resin 20-35 parts by weight, graphene in oneself at 10 parts by weight of plasticizer
Nano micro-flake 0.5-1.5 parts by weight.
4. a kind of graphene composite heat conducting material according to claim 2, which is characterized in that the Microwave Frequency that microwave bulking uses
Rate is 2.1-2.5GHz, and the microwave bulking time is 3-5min.
5. a kind of graphene composite heat conducting material according to claim 3, which is characterized in that the heat conduction inorganic filler preparation
Method are as follows: heat conduction inorganic filler raw material is mixed with silane coupling agent by 0.1%-0.5% and is put into high speed mixer, at normal temperature
10-20min is mixed, mixed material is placed 12-48 hours at room temperature then, obtains heat conduction inorganic filler.
6. a kind of graphene composite heat conducting material according to claim 1, which is characterized in that the phenolic group resin and graphite
The mixing of alkene nano micro-flake, mixing mass ratio 0.1-0.5:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476725.0A CN110305443A (en) | 2019-06-03 | 2019-06-03 | A kind of graphene composite heat conducting material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476725.0A CN110305443A (en) | 2019-06-03 | 2019-06-03 | A kind of graphene composite heat conducting material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110305443A true CN110305443A (en) | 2019-10-08 |
Family
ID=68075056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910476725.0A Pending CN110305443A (en) | 2019-06-03 | 2019-06-03 | A kind of graphene composite heat conducting material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110305443A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466605A (en) * | 2013-08-22 | 2013-12-25 | 广东工业大学 | Preparation method of nano graphite sheet |
| CN104371318A (en) * | 2014-11-19 | 2015-02-25 | 上海大学 | Polyamide composite material with high thermal conductivity and high heat resistance and preparation method thereof |
| CN105199304A (en) * | 2015-09-22 | 2015-12-30 | 陈民 | Polymer composite high in heat-conducting property |
| CN105385106A (en) * | 2015-12-02 | 2016-03-09 | 安捷利（番禺）电子实业有限公司 | Preparation method for high-conductivity insulating composite material |
| WO2017096423A1 (en) * | 2015-12-07 | 2017-06-15 | Deakin University | Method of forming phenolic foam |
| CN109553908A (en) * | 2018-11-30 | 2019-04-02 | 中国科学院金属研究所 | Heat-conducting interface material for electronic equipment dissipating heat |
| CN109735095A (en) * | 2018-11-28 | 2019-05-10 | 宁波墨西科技有限公司 | Graphene composite heat-conducting plastics and preparation method thereof |
-
2019
- 2019-06-03 CN CN201910476725.0A patent/CN110305443A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103466605A (en) * | 2013-08-22 | 2013-12-25 | 广东工业大学 | Preparation method of nano graphite sheet |
| CN104371318A (en) * | 2014-11-19 | 2015-02-25 | 上海大学 | Polyamide composite material with high thermal conductivity and high heat resistance and preparation method thereof |
| CN105199304A (en) * | 2015-09-22 | 2015-12-30 | 陈民 | Polymer composite high in heat-conducting property |
| CN105385106A (en) * | 2015-12-02 | 2016-03-09 | 安捷利（番禺）电子实业有限公司 | Preparation method for high-conductivity insulating composite material |
| WO2017096423A1 (en) * | 2015-12-07 | 2017-06-15 | Deakin University | Method of forming phenolic foam |
| CN109735095A (en) * | 2018-11-28 | 2019-05-10 | 宁波墨西科技有限公司 | Graphene composite heat-conducting plastics and preparation method thereof |
| CN109553908A (en) * | 2018-11-30 | 2019-04-02 | 中国科学院金属研究所 | Heat-conducting interface material for electronic equipment dissipating heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103951974B (en) | A kind of electrostatic-resistant heat conducting nylon composite materials and its preparation method | |
| CN104927330A (en) | High thermal conductive and insulating polymer composite and preparing method and application thereof | |
| CN104629187B (en) | A kind of multi-functional PP composite material and preparation method thereof | |
| CN104559145A (en) | High-toughness and high-thermal-conductivity polymer material and preparation method thereof | |
| CN104559149A (en) | Carbon composite high-thermal-conductivity plastic material and preparation method thereof | |
| CN108559172A (en) | A kind of carbon fibre reinforced composite and preparation method thereof | |
| CN107383598A (en) | A kind of electric business anti-static and abrasion-resistant type PP composite material and preparation method thereof | |
| CN105907092A (en) | Flame-retardant heat-conducting nylon 66 composite material and preparation method thereof | |
| WO2022121547A1 (en) | High-thermal-conductivity reinforced polyphenylene sulfide composite material and preparation method therefor | |
| CN110218430A (en) | A kind of high thermal conductivity high molecular polymer graphene composite material and preparation method thereof | |
| CN107418069B (en) | Special graphene microchip master batch for rubber and preparation method | |
| CN104559146A (en) | Whisker reinforced thermally conductive plastic material and preparation method thereof | |
| CN115260575A (en) | Heat conducting framework with vertical orientation as well as preparation method and application thereof | |
| CN110305443A (en) | A kind of graphene composite heat conducting material and preparation method thereof | |
| CN109776865B (en) | Toughened flame-retardant polylactic acid composite material and preparation method thereof | |
| CN108003474A (en) | A kind of dedicated heat conductive flame-retarding bloom polypropylene of intelligent closestool and preparation method | |
| CN110564058A (en) | Green intumescent flame-retardant polypropylene and preparation method thereof | |
| CN105462177B (en) | A kind of heat-resistant fireproof bamboo-plastic composite material and preparation method thereof | |
| CN105418877A (en) | Ternary phyllosilicate-polyurethane nano-composite thermal insulation material and preparing method thereof | |
| CN106243463B (en) | A kind of preparation method of Polymer/nano graphite flake/silicon dioxide composite material | |
| CN112126125A (en) | Preparation method of composite plastic flame retardant | |
| CN112029247A (en) | High-thermal-conductivity modified polylactic acid film and preparation method thereof | |
| CN116554614A (en) | Preparation method of flame-retardant heat-insulating PVC/rice hull ash-based aerogel composite board | |
| CN107286860B (en) | A kind of liquid crystal modified epoxy adhesive and preparation method thereof with conductive switch performance | |
| CN110041571A (en) | A kind of preparation method of high thermal conductivity graphene composite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191008 |