CN105218996B - A kind of preparation method of modified graphene polyvinyl alcohol compound film - Google Patents
A kind of preparation method of modified graphene polyvinyl alcohol compound film Download PDFInfo
- Publication number
- CN105218996B CN105218996B CN201510788606.0A CN201510788606A CN105218996B CN 105218996 B CN105218996 B CN 105218996B CN 201510788606 A CN201510788606 A CN 201510788606A CN 105218996 B CN105218996 B CN 105218996B
- Authority
- CN
- China
- Prior art keywords
- modified graphene
- polyvinyl alcohol
- graphene
- preparation
- compound film
- 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.)
- Active
Links
Abstract
The invention discloses a kind of preparation method of modified graphene polyvinyl alcohol compound film, modifying agent of the invention selects the methylcoumarin of 7 hydroxyl 4, and the present invention is from chemical reducing agents such as hydrazine hydrate, vitamin C or glucose；Modified graphene is first prepared, then prepares the dispersion liquid of modified graphene, then the dispersion liquid of modified graphene is added in polyvinyl alcohol water solution, finely dispersed modified graphene polyvinyl alcohol solution is obtained；Finally above-mentioned mixed solution is poured into vessel, under air or vacuum environment, is dried in 40 70 degrees Celsius to constant weight, obtains modified graphene/polyvinyl alcohol compound film.Wherein, the mass fraction of modified graphene is 0.1% 10%.The present invention has the advantages that preparation is simple, reaction condition is gentle, be easily manipulated system.
Description
Technical field
The invention belongs to polymer composites preparing technical field, and in particular to a kind of modified graphene-polyvinyl alcohol
The preparation method of laminated film.
Background technology
Polyvinyl alcohol（PVA）It is a kind of water-soluble polymer by polyvinyl acetate ester hydrolysis, with excellent parent
Aqueous and film forming, it is safety non-toxic, widely used also with good chemical stability and biocompatibility.But polyvinyl alcohol
Low intensity itself, the poor performance such as heat-resisting, this causes polyvinyl alcohol and its composite to be all restricted in the application of numerous areas.
Graphene is a kind of new two-dimensional nano-carbon material, with excellent electrical property, mechanical performance and hot property etc.,
Therefore, added as nanofiller component in polymer, the performances such as the electricity, machinery and heat of polymer can be effectively improved.
Therefore, this method is by study hotspot and emphasis as polymer based nanocomposites field.However, the surface of graphene
Interaction between inert state, with other media is weak, and has stronger Van der Waals force between graphene sheet layer, causes
Its hydrophilic, lipophile is all very poor, and this causes its bad dispersibility in polyvinyl alcohol matrix and easy reunion, thus can not be fine
Ground and polymer matrix bluk recombination, further research and application which greatly limits graphene-polyvinyl alcohol composite material.
The dispersity of graphene can be produced to the performance of composite and significantly affected, therefore, and the dispersiveness of graphene is asked
Topic is the key issue in prepared by graphene/polyvinyl alcohol composite material.
The content of the invention
For deficiencies of the prior art, the present invention is modified graphene using modifying agent, so as to improve
With improve its dispersiveness in water and organic solvent, and then provide one kind prepare simply, reaction condition gently, be easily manipulated system
And the preparation method of finely dispersed modified graphene-polyvinyl alcohol compound film.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of preparation method of modified graphene-polyvinyl alcohol compound film, it is characterised in that comprise the following steps：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
0.5-12h is mixed, graphene oxide-aqueous dispersions that concentration is 0.01-2.0 mg/mL are obtained；Again by 7- hydroxy-4-methyl tonka-beans
Element is added in the graphene oxide-aqueous dispersions, and 0.1-6h is stirred at 20-60 DEG C；Then alkaline solution is added, is stirred
0.1-6h, and pH value is adjusted to 9-10；Chemical reducing agent is added, 12-96h is reacted at 60-95 DEG C and obtains being modified mixed liquor；
The modification mixed liquor suction filtration is obtained into solid matter, then with ethanol and deionized water wash described solid matter into successively
Property；It is placed under air or vacuum environment, is dried in 40-70 DEG C to constant weight, that is, obtain modified graphene.
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added to solvent as solute
In, 0.5-6h is stirred, then ultrasonic vibration 0.5-10h, obtain the scattered of the modified graphene that concentration is 0.01-2.0 mg/mL
Liquid.
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 20-95 DEG C, mass concentration is obtained for 1%-10%
Polyvinyl alcohol water solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution,
0.1-5h is stirred, then uses ultrasonic vibration 0.5-12h, finely dispersed modified graphene-polyvinyl alcohol solution is obtained.Will be upper
State modified graphene-polyvinyl alcohol solution to pour into vessel, under air or vacuum environment, in drying at 40-70 DEG C extremely
Constant weight, obtains modified graphene-polyvinyl alcohol compound film；Wherein, the mass fraction of modified graphene is 0.1%-10%.
Further, step 1）Described in alkaline solution be concentration be 0.1-2.0 mol/L sodium hydroxide solution or matter
Measure the ammonia spirit that fraction is 25%-28%.
Further, step 1）Described in graphene oxide, Hymecromone, the quality of chemical reducing agent
Than for 1：1-20：1-50.
Further, step 1）Described in chemical reducing agent be hydrazine hydrate, vitamin C or glucose.
Further, step 2）Described in solvent be deionized water or tetrahydrofuran.
Compared with prior art, the present invention has the advantages that：
1st, the polymeric matrix that the present invention chooses is polyvinyl alcohol（PVA）, can be by buying commercially available product or synthetically prepared
Obtain, material source is extensive, safety non-toxic, chemical stability and good biocompatibility.Solubility property is good, soluble in water and diformazan
Base sulfoxide（DMSO）Deng common organic solvents, filming performance is good, is conducive to processing to prepare.
2nd, the modifying agent that the present invention chooses is Hymecromone, and its molecule contains hydroxyl, ester group and conjugation knot
Structure etc., the interaction such as hydrogen bond and e-e keys can occur with the oxy radical such as the carbonyl and carboxyl in graphene oxide, pass through quilt
Also containing groups such as hydroxyls in modified graphene obtained from reduction, hydrogen bond phase can be produced with the hydroxyl in polyvinyl alcohol molecule
Interaction, is conducive to improving and improves dispersiveness of the graphene in polyvinyl alcohol, strengthens interface binding power.
3rd, the modifying agent that the present invention chooses is Hymecromone, can be made by buying commercially available product or synthesis
Standby to obtain, material is easily obtained, and solubility property is good, and chemical stability is good, and cost is low.
4th, the chemical reducing agent that the present invention chooses, can be by buying commercially available product or synthetically prepared acquisition, and material is easy to obtain
, solubility property is good, and chemical stability is good, cheap.
5th, the preparation method of a kind of modified graphene/polyvinyl alcohol compound film of the present invention, can pass through control
The addition of modified graphene adjusts the quality of polyvinyl alcohol hot property etc., and the laminated film prepared is uniformly dispersed, performance
It is stable.
6th, the preparation method is simple, mild condition, it is easy to operation and control.
Embodiment
The present invention is described in further detail with reference to specific embodiment.
Polyvinyl alcohol used in the present invention（PVA）, it is a kind of polymer by polyvinyl acetate ester hydrolysis, can be with
By buying commercially available product or synthetically prepared acquisition.Its solubility property is good, soluble in water and dimethyl sulfoxide (DMSO)（DMSO）It is molten etc. organic
Agent, filming performance is good, is easy to processing to prepare.
The present invention utilizes modifying agent, i.e. Hymecromone, comes grapheme modified, so as to improve graphene
Dispersiveness in water and organic solvent.Wherein, modifying agent, i.e. Hymecromone, Chinese nickname are cumarin
4, its molecular structural formula is as follows：
It can be by buying commercially available product or synthetically prepared acquisition, and chemical stability is good, and solubility property is good.
Raw material of the present invention --- graphene oxide can be by buying commercially available product or synthetically prepared obtaining.
First, a kind of preparation method of modified graphene-polyvinyl alcohol compound film, comprises the following steps：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
0.5-12h is mixed, graphene oxide-aqueous dispersions that concentration is 0.01-2.0 mg/mL are obtained；Again by 7- hydroxy-4-methyl tonka-beans
Element is added in the graphene oxide-aqueous dispersions, and 0.1-6h is stirred at 20-60 DEG C；Then alkaline solution is added, is stirred
0.1-6h, and pH value is adjusted to 9-10；Chemical reducing agent is added, 12-96h is reacted at 60-95 DEG C and obtains being modified mixed liquor；
The modification mixed liquor suction filtration is obtained into solid matter, then with ethanol and deionized water wash described solid matter into successively
Property；It is placed under air or vacuum environment, is dried in 40-70 DEG C to constant weight, that is, obtain modified graphene.
This step operation is to prepare modified graphene using the method for addition modifying agent and electronation graphene oxide.
In the graphene oxide, Hymecromone, chemical reducing agent, Hymecromone, electronation
Agent should be excessively used, the reaction modifying agent and chemical reducing agent that excess is removed by washing operation.
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added to solvent as solute
In, 0.5-6h is stirred, then ultrasonic vibration 0.5-10h, obtain the scattered of the modified graphene that concentration is 0.01-2.0 mg/mL
Liquid.
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 20-95 DEG C, mass concentration is obtained for 1%-10%
Polyvinyl alcohol water solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution,
0.1-5h is stirred, then uses ultrasonic vibration 0.5-12h, finely dispersed modified graphene-polyvinyl alcohol solution is obtained；Will be upper
State modified graphene-polyvinyl alcohol solution to pour into vessel, under air or vacuum environment, in drying at 40-70 DEG C extremely
Constant weight, obtains modified graphene-polyvinyl alcohol compound film；Wherein, the mass fraction of modified graphene is 0.1%-10%.
This step operation is that modified graphene-polyvinyl alcohol compound film is prepared using solution blended process.
Wherein, step 1）Described in alkaline solution be concentration be 0.1-2.0 mol/L sodium hydroxide solution or quality
Fraction is 25%-28% ammonia spirit；Described chemical reducing agent is hydrazine hydrate, vitamin C or glucose.
Step 1）Described in graphene oxide, Hymecromone, chemical reducing agent mass ratio be 1：1-
20：1-50.The ratio is a kind of prioritization scheme, and the effect of preparation is best.
Step 2）Described in solvent be deionized water or tetrahydrofuran.
Modifying agent of the present invention selects Hymecromone, and the present invention selects hydrazine hydrate, vitamin C or glucose
Deng chemical reducing agent；Modified graphene is first prepared, then prepares the dispersion liquid of modified graphene, then by the scattered of modified graphene
Liquid is added in polyvinyl alcohol water solution, obtains finely dispersed modified graphene-polyvinyl alcohol solution；Finally will be above-mentioned
Mixed solution is poured into vessel, under air or vacuum environment, is dried in 40-70 degrees Celsius to constant weight, is obtained modified graphite
Alkene/polyvinyl alcohol compound film.Wherein, the mass fraction of modified graphene is 0.1%-10%.
2nd, embodiment
Embodiment 1
Adopt and prepare modified graphene-polyvinyl alcohol compound film with the following method：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
1h is mixed, graphene oxide-aqueous dispersions that concentration is 0.05mg/mL are obtained；
Hymecromone is added in the graphene oxide-aqueous dispersions again, 2h is stirred at 25 DEG C；
Then the sodium hydrate aqueous solution that concentration is 1.0 mol/L is added, 0.5h is stirred, and adjust pH value for 9-10；Add chemistry
Reducing agent hydrazine hydrate, reaction 48h obtains being modified mixed liquor at 80 DEG C；
The modification mixed liquor suction filtration is obtained into solid matter, then washs described solid with ethanol and deionized water successively
Matter is to neutrality；It is placed under atmospheric environment, is dried in 50 DEG C to constant weight, that is, obtain modified graphene；
Described graphene oxide, Hymecromone, the mass ratio of hydrazine hydrate are 1：5：10；
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added to tetrahydrochysene furan as solute
In muttering, 1h is stirred, then ultrasonic vibration 8h, obtain the dispersion liquid for the modified graphene that concentration is 0.05 mg/mL；
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 80 DEG C, the poly- second that mass concentration is 5% is obtained
The enol aqueous solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution, stirs 1h,
Ultrasonic vibration 5h is used again, obtains finely dispersed modified graphene-polyvinyl alcohol solution；
Above-mentioned modified graphene-polyvinyl alcohol solution is poured into vessel, under vacuum conditions, in dry at 50 DEG C
To constant weight, modified graphene-polyvinyl alcohol compound film is obtained；Wherein, the mass fraction of modified graphene is 0.3%.
Embodiment 2
Adopt and prepare modified graphene-polyvinyl alcohol compound film with the following method：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
3h is mixed, graphene oxide-aqueous dispersions that concentration is 0.1mg/mL are obtained；
Hymecromone is added in the graphene oxide-aqueous dispersions again, 1h is stirred at 30 DEG C；
Then the sodium hydrate aqueous solution that concentration is 2.0 mol/L is added, 1h is stirred, and adjust pH value for 9-10；Add chemistry also
Former agent vitamin C, reaction 32h obtains being modified mixed liquor at 90 DEG C；
The modification mixed liquor suction filtration is obtained into solid matter, then washs described solid with ethanol and deionized water successively
Matter is to neutrality；It is placed under atmospheric environment, is dried in 60 DEG C to constant weight, that is, obtain modified graphene；
Described graphene oxide, Hymecromone, ascorbic mass ratio are 1：10：20；
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added to tetrahydrochysene furan as solute
In muttering, 3h is stirred, then ultrasonic vibration 6h, obtain the dispersion liquid for the modified graphene that concentration is 0.1mg/mL；
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 85 DEG C, the poly- second that mass concentration is 3% is obtained
The enol aqueous solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution, stirs 2h,
Ultrasonic vibration 8h is used again, obtains finely dispersed modified graphene-polyvinyl alcohol solution；
Above-mentioned modified graphene-polyvinyl alcohol solution is poured into vessel, under atmospheric environment, in dry at 55 DEG C
To constant weight, modified graphene-polyvinyl alcohol compound film is obtained；Wherein, the mass fraction of modified graphene is 0.7%.
Embodiment 3
Adopt and prepare modified graphene-polyvinyl alcohol compound film with the following method：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
5h is mixed, graphene oxide-aqueous dispersions that concentration is 0.5mg/mL are obtained；
Hymecromone is added in the graphene oxide-aqueous dispersions again, stirred at 40 DEG C
0.5h；Then the ammonia spirit that mass fraction is 25%-28% is added, 2h is stirred, and adjust pH value for 9-10；Add chemistry also
Former agent glucose, reaction 18h obtains being modified mixed liquor at 95 DEG C；
The modification mixed liquor suction filtration is obtained into solid matter, then washs described solid with ethanol and deionized water successively
Matter is to neutrality；Place under vacuum conditions, dried in 65 DEG C to constant weight, that is, obtain modified graphene；
Described graphene oxide, Hymecromone, the mass ratio of glucose are 1：20：50；
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added to deionization as solute
In water, 5h is stirred, then ultrasonic vibration 10h, obtain the dispersion liquid for the modified graphene that concentration is 0.5mg/mL；
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 90 DEG C, the poly- second that mass concentration is 6% is obtained
The enol aqueous solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution, stirs 3h,
Ultrasonic vibration 10h is used again, obtains finely dispersed modified graphene-polyvinyl alcohol solution；
Above-mentioned modified graphene-polyvinyl alcohol solution is poured into vessel, under vacuum conditions, in dry at 60 DEG C
To constant weight, modified graphene-polyvinyl alcohol compound film is obtained；Wherein, the mass fraction of modified graphene is 1.5%.
Postmenstruation experiment proof, the thermal weight loss temperature of modified graphene-polyvinyl alcohol compound film of different quality containing
Difference, refers to table 1：
The thermal weight loss temperature of modified graphene-polyvinyl alcohol compound film of the different quality containing of table 1
The above embodiment of the present invention is only example to illustrate the invention, and is not the implementation to the present invention
The restriction of mode.For those of ordinary skill in the field, other can also be made not on the basis of the above description
With the change and variation of form.Here all embodiments can not be exhaustive.It is every to belong to technical scheme
Row of the obvious changes or variations amplified out still in protection scope of the present invention.
Claims (3)
1. a kind of preparation method of modified graphene-polyvinyl alcohol compound film, it is characterised in that comprise the following steps：
1）The preparation of modified graphene：First that graphene oxide is scattered in deionized water, ultrasonic vibration is stirred at normal temperatures
0.5-12h, obtains graphene oxide-aqueous dispersions that concentration is 0.01-2.0 mg/mL；
Hymecromone is added in the graphene oxide-aqueous dispersions again, 0.1- is stirred at 20-60 DEG C
6h；Then alkaline solution is added, 0.1-6h is stirred, and adjust pH value to 9-10；Chemical reducing agent is added, at 60-95 DEG C
Reaction 12-96h obtains being modified mixed liquor；
The modification mixed liquor suction filtration is obtained into solid matter, then with ethanol and deionized water wash described solid matter extremely successively
It is neutral；It is placed under air or vacuum environment, is dried in 40-70 DEG C to constant weight, that is, obtain modified graphene；
Wherein, described graphene oxide, Hymecromone, the mass ratio of chemical reducing agent are 1：1-20：1-
50；Described alkaline solution is the ammonia spirit that mass fraction is 25%-28%；
2）Prepare the dispersion liquid of modified graphene：By step 1）Obtained modified graphene is added in solvent as solute, is stirred
0.5-6h is mixed, then ultrasonic vibration 0.5-10h, obtain the dispersion liquid for the modified graphene that concentration is 0.01-2.0 mg/mL；
3）Prepare film：Polyvinyl alcohol is dissolved in deionized water at 20-95 DEG C, it is the poly- of 1%-10% to obtain mass concentration
Vinyl alcohol aqueous solution；By step 2）The dispersion liquid of obtained modified graphene is added in above-mentioned polyvinyl alcohol water solution, stirring
0.1-5h, then ultrasonic vibration 0.5-12h is used, obtain finely dispersed modified graphene-polyvinyl alcohol solution；
Above-mentioned modified graphene-polyvinyl alcohol solution is poured into vessel, under air or vacuum environment, in 40-70 DEG C
Lower drying obtains modified graphene-polyvinyl alcohol compound film to constant weight；Wherein, the mass fraction of modified graphene is 0.1%-
10%。
2. the preparation method of modified graphene-polyvinyl alcohol compound film according to claim 1, it is characterised in that step
Rapid 1）Described in chemical reducing agent be hydrazine hydrate, vitamin C or glucose.
3. the preparation method of modified graphene-polyvinyl alcohol compound film according to claim 1, it is characterised in that step
Rapid 2）Described in solvent be deionized water or tetrahydrofuran.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510788606.0A CN105218996B (en) | 2015-11-17 | 2015-11-17 | A kind of preparation method of modified graphene polyvinyl alcohol compound film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510788606.0A CN105218996B (en) | 2015-11-17 | 2015-11-17 | A kind of preparation method of modified graphene polyvinyl alcohol compound film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105218996A CN105218996A (en) | 2016-01-06 |
| CN105218996B true CN105218996B (en) | 2017-09-22 |
Family
ID=54988307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510788606.0A Active CN105218996B (en) | 2015-11-17 | 2015-11-17 | A kind of preparation method of modified graphene polyvinyl alcohol compound film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105218996B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325466B (en) * | 2016-04-29 | 2020-12-18 | 中国石油化工股份有限公司 | Thermoplastically processable polyvinyl alcohol/graphene hydrophobic composite material and preparation method and application thereof |
| CN105778373A (en) * | 2016-05-10 | 2016-07-20 | 四川大学 | Method for preparing melt-processable modified polyvinyl alcohol-graphene composite material |
| CN106046523A (en) * | 2016-07-21 | 2016-10-26 | 合肥市智源包装科技有限公司 | Modified graphene-polyethylene film material for toothpaste sheeting and preparation method thereof |
| CN106000319B (en) * | 2016-08-03 | 2018-06-08 | 四川理工学院 | Remove the sorbing material of trace arsenic and its minimizing technology to trace arsenic in water body in water body |
| CN106936065A (en) * | 2017-04-27 | 2017-07-07 | 西安石油大学 | Carboxylated graphene oxide saturable absorber device and preparation method thereof and its application in optical fiber laser |
| CN107586426A (en) * | 2017-10-21 | 2018-01-16 | 马小良 | A kind of preparation method of stable dispersion type molybdenum disulfide polyvinyl alcohol composite material |
| CN108610591B (en) * | 2018-04-26 | 2021-06-01 | 武汉工程大学 | Graphene/polyvinyl alcohol composite elastic film and preparation method thereof |
| CN108641107A (en) * | 2018-08-08 | 2018-10-12 | 苏州傅里烨新材料科技有限公司 | A kind of graphene composite material film and preparation method thereof |
| CN113921814B (en) * | 2021-09-30 | 2023-09-05 | 云南中晟新材料有限责任公司 | Production process of brightening agent modified lithium ion battery graphite anode material |
| CN114540812A (en) * | 2022-01-26 | 2022-05-27 | 山东大学 | Method for preparing reduced graphene film on metal surface |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254455A (en) * | 2013-04-23 | 2013-08-21 | 中国科学院上海光学精密机械研究所 | Preparation method of graphene-thickening polymer composite film |
| CN103265714B (en) * | 2013-05-20 | 2015-04-22 | 西安理工大学 | Polyvinyl alcohol/graphene oxide composite film preparation method |
-
2015
- 2015-11-17 CN CN201510788606.0A patent/CN105218996B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105218996A (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105218996B (en) | A kind of preparation method of modified graphene polyvinyl alcohol compound film | |
| CN105315476B (en) | A kind of method for preparing modified graphene polyvinyl alcohol compound film | |
| CN105315508B (en) | A kind of preparation method of modified graphene chitosan laminated film | |
| CN105315507B (en) | A kind of method for preparing modified graphene chitosan laminated film | |
| CN106477559B (en) | A kind of graphene and preparation method thereof | |
| Cheng et al. | Adsorption of polyethylene glycol (PEG) onto cellulose nano-crystals to improve its dispersity | |
| CN105218845B (en) | A kind of preparation method of modified graphene polymethyl methacrylate laminated film | |
| CN102219211B (en) | Method for reducing and decorating graphene oxide by plant polyphenol and derivant thereof | |
| CN101818280B (en) | Preparation method of metal matrix composite for carbon nano tube | |
| CN101703915B (en) | Preparation method of conducting polyaniline-lignosulfonic acid composite hollow sphere | |
| CN103627246B (en) | Temperature-control microcapsule type drying agent as well as preparation method and application thereof | |
| CN107151011A (en) | Modified graphene and preparation method thereof | |
| CN105236391B (en) | The method that lignin liquor prepares graphene | |
| CN109704337B (en) | Method for rapidly preparing micron-sized carbon spheres with good dispersibility | |
| CN101381524A (en) | Mono-layer graphite oxide and water-soluble high molecule reinforced compound material | |
| CN104743541A (en) | Preparation method of carbon aerogel | |
| CN106800293B (en) | A kind of graphene of part of hydroxyl and preparation method thereof | |
| CN104226268A (en) | Modified cellulose/graphene oxide composite microsphere and preparation method thereof | |
| CN106810800A (en) | A kind of preparation method of antibiotic property polyvinyl alcohol/cellulose oxidation Graphene PVA/CNC GO composite membranes | |
| Hao et al. | Dialdehyde xylan-based sustainable, stable, and catalytic liquid metal nano-inks | |
| CN103399064A (en) | Oxidized graphene/hydrotalcite/Nafion composite film modified electrode and preparation method thereof | |
| CN104004341B (en) | A kind of graphene oxide sulfonate type Waterborne PU Composite and preparation method | |
| TWI428285B (en) | Micro-scaled flake silver particles and method for producing the same | |
| CN105923624B (en) | A kind of preparation method of modified graphene | |
| CN105237930A (en) | Method for preparing modified graphene-polymethyl methacrylate composite film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210611 Address after: Room 801, 85 Kefeng Road, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Yami Technology (Guangzhou) Co.,Ltd. Address before: No. 69 lijiatuo Chongqing District of Banan City Road 400054 red Patentee before: Chongqing University of Technology |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220805 Address after: 528000 No. 05 (F1) 2, North District, "National Torch Program Foshan Electronic and Electrical Industry Base", Baini Town, Sanshui District, Foshan City, Guangdong Province (Residence declaration) Patentee after: Foshan Yueyuancheng Packaging Products Co., Ltd. Address before: Room 801, 85 Kefeng Road, Huangpu District, Guangzhou City, Guangdong Province Patentee before: Yami Technology (Guangzhou) Co.,Ltd. |