CN107456928A - A kind of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer and preparation method thereof - Google Patents
A kind of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer and preparation method thereof Download PDFInfo
- Publication number
- CN107456928A CN107456928A CN201710729604.3A CN201710729604A CN107456928A CN 107456928 A CN107456928 A CN 107456928A CN 201710729604 A CN201710729604 A CN 201710729604A CN 107456928 A CN107456928 A CN 107456928A
- Authority
- CN
- China
- Prior art keywords
- aeroge
- sodium alginate
- graphene
- preparation
- cnt
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0091—Preparation of aerogels, e.g. xerogels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The invention discloses a kind of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer and preparation method thereof.Thinking of the inventive method based on structure fiber-reinforced composite and using CNT increase sensing sensitivity, after graphene, sodium alginate and CNT are mixed to form into aeroge, in H4N2·H2Reduction reaction is carried out in O steam atmospheres, the graphene/sodium alginate/CNT composite elastic aeroge for being used for strain transducer is prepared.The aeroge of the present invention has high mechanical endurance, favorable elasticity, structural continuity and high sensitivity, pass through the ratio for controlling graphene oxide, sodium alginate and CNT to match, control the rule degree of the pore structure of aeroge, form more regular network, so as to regulate and control the mechanical performance of aeroge, and resistance variations response performance；Simultaneously by the abundant reduction of hydrazine hydrate steam, make the aeroge of preparation there is hydrophobic performance.
Description
Technical field
The invention belongs to strain transducer Material Field, and in particular to a kind of graphene/sodium alginate/CNT is compound
Elastic aeroge and preparation method thereof.
Background technology
High elastic strain sensor due to its structural health detection, electronic skin, telescopic solar cell and
The application of pressure distribution analysis etc., have become a focus of people's research.So far, elastic strain sensor
Typically come by using carbon black, CNT, graphene, nano wire, nano particle and their composite nanostructure tissue
Manufacture.As Gong Shu, Schwalb Willem et al. are clipped in two thin gather by the thin paper for impregnating ultra-thin nanowires of gold
Between dimethyl siloxane piece, high sensitivity, flexible pressure sensor are constructed（Gong S, Schwalb W, Wang Y,
et al. A wearable and highly sensitive pressure sensor with ultrathin gold
nanowires[J]. Nature Communications, 2014, 5(2):3132.）.Darren J. Lipomi et al. are reported
The coating film of a kind of transparent, conductive single-layer carbon nano-tube has been accused, can be by applying strain to stretch, so along each axle
After discharge the strain.This method produces the structure of spring-like in nanotube, and it accommodates up to 150% strain
（Vosgueritchian M, Lipomi D J, Bao Z. Highly Conductive and Transparent
PEDOT:PSS Films with a Fluorosurfactant for Stretchable and Flexible
Transparent Electrodes[J]. Advanced Functional Materials, 2012, 22(2):421-
428.）.
Porous graphene aerogel material with extremely-low density and fast quick-recovery deformation rate is manufacture with excellent electron
One of preferred material of strain transducer of conductive performance and mechanical performance.Yet with the pi-pi bond characteristic and model of graphene
De Huali effect, graphene sheet layer are always intended to form irreversible aggregate, and which results in most of graphene airsettings
The easily rupturable mechanical performance of glue.Such as：When being compressed test, the mill of aeroge often recurring structure collapse or it is serious not
Reversible deformation.The reason for causing this phenomenon is probably due in assembling process is induced, seriously being stacked between the dilute lamella of graphite
Caused by.
Although the aeroge studied at present shows required certain electric conductivity, some also has certain mechanically stable
Performance, then both be closely connected, take into account, be then more not easy simultaneously.Also some key issues still have to be solved.For example, this
The preparation process reported a bit is generally very complicated, and resistance is unstable, and cyclic deformation is as compressed, bending, and stretching or change are reversed significantly
Limit the practical application of mixing aeroge.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of graphene for strain transducer/
Sodium alginate/CNT composite elastic aeroge.The aeroge with high mechanical endurance, with good hydrophobicity, good
Elasticity, structural continuity and high sensitivity, have broad application prospects in strain transducer material.
The present invention also aims to a kind of graphene/sodium alginate/carbon for strain transducer for providing described to receive
The preparation method of mitron composite elastic aeroge.This method is based on structure fiber-reinforced composite and using mitron increase sensing spirit
The thinking of quick property, after graphene, sodium alginate and CNT are mixed to form into aeroge, in H4N2·H2In O steam atmospheres
Reduction reaction is carried out, the graphene/sodium alginate/CNT composite elastic airsetting for being used for strain transducer is prepared
Glue.
Preparation method of the present invention be based on structure fiber-reinforced composite and using CNT it is compound increase mechanically stable and
Sense the thinking of sensitivity, the skeleton matrix using graphene oxide layer as composite aerogel；CNT plays support and made
With structure pore structure；Sodium alginate is then used for reinforcing enhancing, improves the stability of aerogel structure；Three's collective effect is real
Existing composite aerogel favorable elasticity and strain sensitivity.
The purpose of the present invention is achieved through the following technical solutions.
A kind of preparation method of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer,
Comprise the following steps：
（1）After sodium alginate soln, graphene oxide solution and carbon nano tube suspension are mixed, stir, freezing is dry
It is dry, obtain composite aerogel；
（2）Obtained composite aerogel is placed in H4N2·H2Reduction reaction is carried out in O steam atmospheres, reaction stands logical after terminating
Wind, obtain the graphene/sodium alginate/CNT composite elastic aeroge for being used for strain transducer.
Further, step（1）In, the sodium alginate（SA）Solution, graphene oxide（GO）Solution and carbon nanometer
Pipe（CNTs）The concentration of suspension is 1~10 mg/L.
Preparing graphene oxide solution is：Graphene oxide is placed in deionized water, then to adjust graphene oxide water-soluble
The concentration of liquid is 1~10 mg/L, and is uniformly dispersed again by 0.5~3 h of ultrasound；The graphene oxide of use uses universal
Improved Hummers methods are prepared.
Prepare sodium alginate soln and carbon nano tube suspension is：Sodium alginate and CNT are dissolved with going respectively
It is uniformly dispersed to obtain in ionized water.
Further, step（1）In, the graphene oxide solution, sodium alginate soln and carbon nano tube suspension
Combined amount in mass ratio：Graphene oxide：Sodium alginate：CNT=20：10~1：1~10.
Further, step（1）In, the stirring is 1~4h of stirring under 100~200rpm rotating speed.
Further, step（1）In, the freeze-drying is to be freeze-dried 48~72 h at -40 DEG C~-70 DEG C.
Further, step（2）In, the reduction reaction is to react 5~24h at 50~100 DEG C, using hydrazine hydrate
（H4N2·H2O）Steam is reduced, and the aeroge for making preparation is had into hydrophobic performance；Meanwhile by hydrazine hydrate reduction process,
Make that preparation method is simple and practical, effect is remarkable, there is good operability and inexpensive feature.
Further, step（2）In, the time for standing ventilation is 5~24 h；Divulged information by standing, can will be unnecessary
Hydrazine hydrate（H4N2·H2O）Steam eliminates.
A kind of graphene/sodium alginate for strain transducer as made from the preparation method described in any of the above-described/
CNT composite elastic aeroge.
Compared with prior art, the invention has the advantages that and beneficial effect：
（1）The composite aerogel of the present invention has high mechanical endurance, favorable elasticity, structural continuity and high sensitivity,
The maximum stress born under 50% strain reaches 8400 pa, and the relatively pure rGO aeroges of the compression performance of composite aerogel obtain
To substantially improving, had broad application prospects in strain transducer material；
（2）The aeroge of the present invention has the hypersensitivity to compression, and resistance variations are more sensitive, is followed in compression release
In ring test, Δ R/R0 values and the substantially linear variation tendency of relation of strain, in compression process, Δ R/R0 values are with strain
Change and increase（Maximum has reached 58%）, and resistance is returned nearly to original value, and the synchronous linear relationship after unloading
Show periodically, show excellent strain sensitivity；
（3）Pass through the ratio for controlling graphene oxide, sodium alginate and CNT to match, control in preparation process of the present invention
The rule degree of the pore structure of aeroge, more regular network is formd, so as to having regulated and controled the mechanical performance of aeroge, and
Resistance variations response performance；
（4）Preparation method of the present invention makes the aeroge of preparation have hydrophobic performance by the abundant reduction of hydrazine hydrate steam, can
Protection against the tide, there is high durability and stability, Static water contact angles are up to 132 °, and with the increase of carbon pipe content, contact angle
Gradually increase；
（5）Preparation technology flow of the present invention is simple, cost is low, and because no multi-grade chemical reacts, has renewable production.
Brief description of the drawings
Fig. 1 is composite aerogel rGO/SA/CNTs of the present invention preparation flow and the structural representation of composite aerogel；
Fig. 2 is the schematic device of the hydrazine hydrate reduction reaction of composite aerogel in specific embodiment；
Fig. 3 a are that the SEM of pure rGO aeroges schemes；
The SEM figures that Fig. 3 b are composite aerogel rGO/SA/CNTs-1 prepared by embodiment 1；
The SEM figures that Fig. 3 c are composite aerogel rGO/SA/CNTs-2 prepared by embodiment 2；
The SEM figures that Fig. 3 d are composite aerogel rGO/SA/CNTs-3 prepared by embodiment 3；
The SEM figures that Fig. 3 e are composite aerogel rGO/SA/CNTs-4 prepared by embodiment 4；
The high power SEM figures that Fig. 3 f are composite aerogel rGO/SA/CNTs-3 prepared by embodiment 3；
Fig. 4 a are the contact angle test chart of pure rGO aeroges；
Fig. 4 b are composite aerogel rGO/SA/CNTs-1 prepared by embodiment 1 contact angle test chart；
Fig. 4 c are composite aerogel rGO/SA/CNTs-2 prepared by embodiment 2 contact angle test chart；
Fig. 4 d are composite aerogel rGO/SA/CNTs-3 prepared by embodiment 3 contact angle test chart；
Fig. 4 e are composite aerogel rGO/SA/CNTs-4 prepared by embodiment 4 contact angle test chart；
Fig. 4 f are that the contact angle of pure rGO aeroges and composite aerogel rGO/SA/CNTs-1~4 and CNT contain spirogram；
Fig. 5 is pure rGO aeroges and the composite aerogel rGO/SA/CNTs of the preparation of embodiment 1 ~ 4 stress-strain curve diagram；
Fig. 6 is the stress-strain that composite aerogel rGO/SA/CNTs-3 carries out more second compression-rebound tests under 50% strain
Curve map；
Fig. 7 is the ratio that composite aerogel rGO/SA/CNTs-3 compresses composite aerogel resistance in release cycle under 50% strain
Variation diagram.
Embodiment
Technical solution of the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing, but the present invention is unlimited
In this.
In the specific embodiment of the invention, the preparation flow of rGO/SA/CNTs composite aquogels and the structure of composite aerogel
Schematic diagram is as shown in figure 1, graphene oxide, sodium alginate and CNT are by solution combined, freeze-drying and reduce
After reaction, rGO/SA/CNTs composite aquogels are formed；The rGO/SA/CNTs composite aquogels of formation have well-regulated pore structure,
So that composite aquogel has good elasticity, good pore structure is still kept after being compressed.
In the specific embodiment of the invention, device that hydrazine hydrate steam reduction process uses is can be in HTHP, hydrazine hydrate
The ptfe autoclave container of reduction reaction occurs in steam atmosphere, the structural representation of container is as shown in Figure 2；In container
2~4 mL hydrazine hydrate solutions can be contained；Meanwhile contacted to completely cut off hydrazine hydrate solution with GO/SA/CNTs composite aerogels, hold
3-8 layer ceramic fine beads are added in device, the top layer of ceramic fine bead places GO/SA/CNTs composite aerogels；The ceramic fine bead of use
For one or more of zirconium oxide, silicon nitride and aluminum oxide；Using the hole between ceramic fine bead, composite aerogel can be worn
The hydrazine hydrate steam for crossing hole uniformly thoroughly reduce；
During carrying out reduction reaction, reactor is placed under 50~100 DEG C of environment, now hydrazine hydrate solution evaporation turns into water
Hydrazine steam is closed, hydrazine hydrate steam is freely entered inside aeroge by stomata and fully contacted with aeroge, and it is anti-to complete reduction
Should, and impurity will not be brought, destroy the structure of aeroge.
The graphene oxide used in the specific embodiment of the invention is prepared using universal improved Hummers methods,
Specific oxidizing process in two steps；During pre-oxidation, by H2SO4, K2S2O8And P2O5Handled；Second heat of oxidation, will be dense
H2SO4, KMnO4Carry out secondary oxidation；Finally by watery hydrochloric acid, deionized water washing, dry, obtain graphene oxide, finally will
Graphene oxide is placed in deionized water, ultrasonic disperse, obtains graphene oxide solution.
Carbon nano tube suspension in the specific embodiment of the invention purifies to obtain using conventional acidization, uses first
98wt% H2SO4With 65wt% HNO3Handled, then the dense NaOH aqueous solution absorbs tail gas, repeatedly filters, washing is until measure
Filtrate pH value is neutrality, obtains CNT solid；Finally CNT solid is dissolved in deionized water again, obtains carbon
Nanotube suspension.
Embodiment 1
For the preparation of graphene/sodium alginate/CNT composite elastic aeroge of strain transducer, specifically include as follows
Step：
（1）Obtained graphene oxide is placed in deionized water, regulation graphene oxide water solution concentration is 5 mg mL-1,
2.5 h of ultrasound are dispersed；Then by sodium alginate（SA）Solution（1 mg·mL-1）, graphene oxide（GO）Solution（1 mg·
mL-1）And CNT（CNTs）Suspension（1 mg·mL-1）GO in mass ratio:SA:CNTs=GO:SA:CNTs=20:7:3
After mixing, mixture 140rpm be stirred continuously 3.5 hours, is then placed in freeze drier, -58 DEG C carry out freezing and do
Dry 48 hours, obtain composite aerogel；
（2）Then, the composite aerogel of acquisition is placed in tetrafluoroethene reactor（Ceramic fine bead is silicon nitride）In, and in
H4N2·H2Under O steam atmospheres, reduction reaction is carried out at 100 DEG C 8 hours；After reaction terminates, ventilation 7 hours are stood, are eliminated more
Remaining hydrazine hydrate steam, obtain the graphene/sodium alginate/CNT composite elastic airsetting for being used for strain transducer
Glue, it is named as rGO/SA/CNTs-1.
Embodiment 2
For the preparation of graphene/sodium alginate/CNT composite elastic aeroge of strain transducer, specifically include as follows
Step：
（1）Obtained graphene oxide is placed in deionized water, regulation graphene oxide water solution concentration is 3mg mL-1, surpass
The h of sound 1.5 is dispersed；Then by sodium alginate（SA）Solution（3mg·mL-1）, graphene oxide（GO）Solution（3mg·mL-1）And CNT（CNTs）Suspension（3mg·mL-1）GO in mass ratio:SA:CNTs=20:5:After 5 mixing, to mixture
130rpm be stirred continuously 2.5 hours, is then placed in freeze drier, and -65 DEG C carry out freeze-drying 48 hours, are answered
Close aeroge；
（2）Then, the composite aerogel of acquisition is placed in tetrafluoroethene reactor（Ceramic fine bead is silicon nitride）In, and in H4N2·
H2Under O steam atmospheres, reduction reaction is carried out at 85 DEG C 10.5 hours；After reaction terminates, ventilation 6 hours are stood, it is unnecessary to eliminate
Hydrazine hydrate steam obtain the graphene/sodium alginate/CNT composite elastic aeroge for being used for strain transducer, life
Entitled rGO/SA/CNTs-2.
Embodiment 3
For the preparation of graphene/sodium alginate/CNT composite elastic aeroge of strain transducer, specifically include as follows
Step：
（1）Obtained graphene oxide is placed in deionized water, regulation graphene oxide water solution concentration is 4mg mL-1, surpass
Sound 1h is dispersed；Then by sodium alginate（SA）Solution（4mg·mL-1）, graphene oxide（GO）Solution（4mg·mL-1）With
And CNT（CNTs）Suspension（4mg·mL-1）GO in mass ratio:SA:CNTs=20:3:After 7 mixing, to mixture
150rpm be stirred continuously 2 hours, is then placed in freeze drier, and -60 DEG C carry out freeze-drying 48 hours, obtain compound
Aeroge；
（2）Then, the composite aerogel of acquisition is placed in tetrafluoroethene reactor（Ceramic fine bead is zirconium oxide）In, and in
H4N2·H2Under O steam atmospheres, reduction reaction is carried out at 90 DEG C 10 hours；After reaction terminates, ventilation 8 hours are stood, are eliminated more
Remaining hydrazine hydrate steam, obtain the graphene/sodium alginate/CNT composite elastic airsetting for being used for strain transducer
Glue, it is named as rGO/SA/CNTs-3.
Embodiment 4
For the preparation of graphene/sodium alginate/CNT composite elastic aeroge of strain transducer, specifically include as follows
Step：
（1）Obtained graphene oxide is placed in deionized water, regulation graphene oxide water solution concentration is 2 mg mL-1,
2 h of ultrasound are dispersed；Then by sodium alginate（SA）Solution（10 mg·mL-1）, graphene oxide（GO）Solution（10 mg·
mL-1）And CNT（CNTs）Suspension（10 mg·mL-1）GO in mass ratio:SA:CNTs=20:1:After 9 mixing, to mixed
Compound 120rpm be stirred continuously 3 hours, is then placed in freeze drier, and -60 DEG C carry out freeze-drying 48 hours, obtain
Composite aerogel；
（2）Then, the composite aerogel of acquisition is placed in tetrafluoroethene reactor（Ceramic fine bead is aluminum oxide）In, and in
H4N2·H2Under O steam atmospheres, reduction reaction is carried out at 75 DEG C 11 hours；After reaction terminates, ventilation 5 hours are stood, are eliminated more
Remaining hydrazine hydrate steam, obtain the graphene/sodium alginate/CNT composite elastic airsetting for being used for strain transducer
Glue, it is named as rGO/SA/CNTs-4.
As shown in Figure 3 a, Fig. 3 a show that the network structure of pure rGO aeroges and aperture are mixed and disorderly to the SEM figures of pure rGO aeroges
Stacking；Composite aerogel rGO/SA/CNTs-1 prepared by embodiment 1 SEM schemes as shown in Figure 3 b, the composite aerogel hole of preparation
Structure only has small part uniform, and it is neat that small part occurs in stacking；Composite aerogel rGO/SA/CNTs-2 prepared by embodiment 2
SEM figure as shown in Figure 3 c, the composite aerogel pore structure of preparation is more uniform, and stacking is more neat；Prepared by embodiment 3 answers
The SEM for closing aeroge rGO/SA/CNTs-3 schemes as shown in Figure 3 d, and the composite aerogel pore structure of preparation is the most uniform, and stacking is most
To be neat；Composite aerogel rGO/SA/CNTs-4 prepared by embodiment 4 SEM schemes as shown in Figure 3 e, the composite aerogel of preparation
Pore structure only has part, and uniformly it is neat that part occurs in stacking；As a result show, the net of composite aerogel prepared by embodiment 1 ~ 4
Shape structure and aperture are greatly improved.
The SEM of the composite aerogel prepared by comparative example 1 ~ 4 schemes（That is Fig. 3 b ~ Fig. 3 e）, composite aerogel rGO/
SA/CNTs-2, rGO/SA/CNTs-4 and rGO/SA/CNTs-1 network structure and aperture are uneven, and composite aerogel rGO/
SA/CNTs-3 aperture is more uniform, and aperture is tens microns, and composite aerogel prepared by 1 ~ embodiment of embodiment 4 presses hole
Structural homogeneity and lamella stacking systematicness arrange from high to low, are：rGO/SA/CNTs-3>rGO/SA/CNTs-2> rGO/
SA/CNTs-4>RGO/SA/CNTs-1, composite aerogel rGO/SA/CNTs-3 microstructure are the most intact；To rGO/SA/
The further high power observations of CNTs-3 are found（Such as Fig. 3 f）, there is substantial amounts of CNT on graphene sheet layer, with CNT
Strengthen matrix phase to echo.
The contact angle test chart of pure rGO aeroges as shown in fig. 4 a, the contact of composite aerogel rGO/SA/CNTs-1~4
Angle test chart is respectively as shown in Fig. 4 b ~ Fig. 4 e；From Fig. 4 a ~ Fig. 4 e, pure rGO aeroges and composite aerogel rGO/SA/
The Static water contact angles test of CNTs-1~4 shows that its contact angle is respectively 107 °, 113 °, 118 °, 127 ° and 132 °；Pure rGO
Aeroge and the contact angle of composite aerogel rGO/SA/CNTs-1~4 contain spirogram as shown in fig. 4f with CNT；As a result show, through changing
Learn in the aeroge obtained after reduction, oxygen-containing functional group greatly reduces, material hydrophobic enhancing, can be moistureproof, has high durable
Property and stability；Simultaneously composite aerogel contact angle compared to pure aeroge increase, and with content of carbon nanotubes increase and
Increase.
Composite aerogel rGO/SA/CNTs prepared by pure rGO aeroges and embodiment 1 ~ 4 stress-strain curve diagram is as schemed
Shown in 5, Fig. 5 shows the maximum stress that the composite aerogel of preparation is born under 50% strain, what rGO/SA/CNTs-1 was born
Maximum stress is 3150pa, rGO/SA/CNTs-2 6800pa, and rGO/SA/CNTs-3 has reached 8400pa, and rGO/SA/
CNTs-4 is 3600pa；The maximum stress that bears is only 1500pa under pure rGO 50% strain, and caves in that cause can not after compressing
Resilience.
The stress-strain that composite aerogel rGO/SA/CNTs-3 carries out more second compression-rebound tests under 50% strain is bent
Line chart is as shown in fig. 6, it will be appreciated from fig. 6 that composite aerogel rGO/SA/CNTs-3 has excellent and stable elasticity and strain sensing
Performance, still resilient after compressing more than 50%, more second compression circulations are still indeformable.
Composite aerogel rGO/SA/CNTs-3 compresses the ratio of composite aerogel resistance in release cycle under 50% strain
Variation diagram is as shown in fig. 7, as shown in Figure 7, the composite aerogel of preparation is in compression release cycle experiment, Δ R/R0 values and strain
The substantially linear variation tendency of relation；In compression process, Δ R/R0 values increase with the change of strain（Maximum is
58%）, and resistance is almost completely recovered to original value after unloading, and the synchronous linear relationship shows periodically, shows excellent
Different strain sensitivity, illustrate that the aeroge has preferable fatigue resistance, show splendid repeatability and mechanically stable
Property, there is metastable strain sensitivity, to compression sensitivity and stably, having in terms of strain transducer is very big
Application potential.
The present invention illustrates the detailed construction feature and construction method of the present invention by above-described embodiment, but the present invention is simultaneously
Above-mentioned detailed construction feature and construction method are not limited to, that is, does not mean that the present invention has to rely on above-mentioned detailed construction feature
And construction method could be implemented.Person of ordinary skill in the field should be understood that any improvement in the present invention, to this hair
The equivalence replacement of bright selected part and the increase of accessory, the selection of concrete mode etc., all fall within the protection of the present invention
Within the scope of scope and disclosure.
Claims (8)
1. a kind of preparation method of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer, its
It is characterised by, comprises the following steps：
（1）After sodium alginate soln, graphene oxide solution and carbon nano tube suspension are mixed, stir, freezing is dry
It is dry, obtain composite aerogel；
（2）Obtained composite aerogel is placed in H4N2·H2Reduction reaction is carried out in O steam atmospheres, reaction stands logical after terminating
Wind, obtain the graphene/sodium alginate/CNT composite elastic aeroge for being used for strain transducer.
A kind of 2. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（1）In, the sodium alginate soln, graphene oxide solution and carbon are received
The concentration of mitron suspension is 1~10 mg/L.
A kind of 3. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（1）In, the graphene oxide solution, sodium alginate soln and carbon are received
The combined amount of mitron suspension is in mass ratio：Graphene oxide：Sodium alginate：CNT=20：10~1：1~10.
A kind of 4. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（1）In, it is described stirring be under 100~200rpm rotating speed stirring 1~
4h。
A kind of 5. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（1）In, the freeze-drying is to be freeze-dried 48 at -40 DEG C~-70 DEG C
~72 h.
A kind of 6. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（2）In, the reduction reaction is to react 5~24h at 50~100 DEG C.
A kind of 7. graphene/sodium alginate/CNT composite elastic for strain transducer according to claim 1
The preparation method of aeroge, it is characterised in that step（2）In, the time for standing ventilation is 5~24 h.
A kind of 8. graphene/marine alga for strain transducer as made from the preparation method described in any one of claim 1~7
Sour sodium/CNT composite elastic aeroge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729604.3A CN107456928B (en) | 2017-08-23 | 2017-08-23 | Graphene/sodium alginate/carbon nanotube composite elastic aerogel for strain sensor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729604.3A CN107456928B (en) | 2017-08-23 | 2017-08-23 | Graphene/sodium alginate/carbon nanotube composite elastic aerogel for strain sensor and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107456928A true CN107456928A (en) | 2017-12-12 |
| CN107456928B CN107456928B (en) | 2020-11-24 |
Family
ID=60550354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710729604.3A Active CN107456928B (en) | 2017-08-23 | 2017-08-23 | Graphene/sodium alginate/carbon nanotube composite elastic aerogel for strain sensor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107456928B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760101A (en) * | 2018-04-26 | 2018-11-06 | 中国科学院兰州化学物理研究所 | A kind of three-dimensional grapheme/carbon nanotube elastomer and its application in flexible piezoresistive transducer |
| CN108987702A (en) * | 2018-07-16 | 2018-12-11 | 西安交通大学苏州研究院 | Integrated electrode material and its preparation and application based on composite aerogel |
| CN110455176A (en) * | 2019-07-19 | 2019-11-15 | 南京邮电大学 | The preparation method of flexible strain transducer |
| CN110763377A (en) * | 2019-10-21 | 2020-02-07 | 华南理工大学 | Super-hydrophobic piezoresistive pressure sensor and preparation method and application thereof |
| CN112354491A (en) * | 2020-10-27 | 2021-02-12 | 浙江工业大学 | Carbon-nitrogen double-defect optimized three-dimensional honeycomb aerogel and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674315A (en) * | 2012-04-25 | 2012-09-19 | 浙江大学 | Graphene-carbon nano tube composite all-carbon ultra-light elastic aerogel and preparation method thereof |
| CN104495780A (en) * | 2014-12-30 | 2015-04-08 | 浙江碳谷上希材料科技有限公司 | Hydrophilic graphene-carbon nano-tube composite super-light elastic aerogel and preparation method thereof |
| CN105110316A (en) * | 2015-08-05 | 2015-12-02 | 哈尔滨工业大学 | Graphene-carbon nanofiber composite aerogel preparation method |
| CN106853296A (en) * | 2016-12-30 | 2017-06-16 | 福建农林大学 | A kind of oil water separation type sodium alginate/graphene oxide composite aerogel and preparation method thereof |
-
2017
- 2017-08-23 CN CN201710729604.3A patent/CN107456928B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674315A (en) * | 2012-04-25 | 2012-09-19 | 浙江大学 | Graphene-carbon nano tube composite all-carbon ultra-light elastic aerogel and preparation method thereof |
| CN104495780A (en) * | 2014-12-30 | 2015-04-08 | 浙江碳谷上希材料科技有限公司 | Hydrophilic graphene-carbon nano-tube composite super-light elastic aerogel and preparation method thereof |
| CN105110316A (en) * | 2015-08-05 | 2015-12-02 | 哈尔滨工业大学 | Graphene-carbon nanofiber composite aerogel preparation method |
| CN106853296A (en) * | 2016-12-30 | 2017-06-16 | 福建农林大学 | A kind of oil water separation type sodium alginate/graphene oxide composite aerogel and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| PENG LV ET AL.: "Super-elastic graphene/carbon nanotube aerogels and their application as a strain-gauge sensor", 《RSC ADVANCES》 * |
| XUE YUAN ET AL.: "Bio-based graphene/sodium alginate aerogels for strain sensors", 《RSC ADVANCES》 * |
| 孙海燕: "石墨烯基多功能超轻弹性气凝胶", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760101A (en) * | 2018-04-26 | 2018-11-06 | 中国科学院兰州化学物理研究所 | A kind of three-dimensional grapheme/carbon nanotube elastomer and its application in flexible piezoresistive transducer |
| CN108987702A (en) * | 2018-07-16 | 2018-12-11 | 西安交通大学苏州研究院 | Integrated electrode material and its preparation and application based on composite aerogel |
| CN108987702B (en) * | 2018-07-16 | 2021-03-12 | 西安交通大学苏州研究院 | Integrated electrode material based on composite aerogel and preparation and application thereof |
| CN110455176A (en) * | 2019-07-19 | 2019-11-15 | 南京邮电大学 | The preparation method of flexible strain transducer |
| CN110763377A (en) * | 2019-10-21 | 2020-02-07 | 华南理工大学 | Super-hydrophobic piezoresistive pressure sensor and preparation method and application thereof |
| CN110763377B (en) * | 2019-10-21 | 2020-08-18 | 华南理工大学 | Super-hydrophobic piezoresistive pressure sensor and preparation method and application thereof |
| CN112354491A (en) * | 2020-10-27 | 2021-02-12 | 浙江工业大学 | Carbon-nitrogen double-defect optimized three-dimensional honeycomb aerogel and preparation method and application thereof |
| CN112354491B (en) * | 2020-10-27 | 2022-04-22 | 浙江工业大学 | Carbon-nitrogen double-defect optimized three-dimensional honeycomb aerogel and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107456928B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107456928A (en) | A kind of graphene/sodium alginate/CNT composite elastic aeroge for strain transducer and preparation method thereof | |
| Song et al. | Layer-by-layer in situ growth flexible polyaniline/graphene paper wrapped by MnO2 nanoflowers for all-solid-state supercapacitor | |
| CN105948029A (en) | Graphene roll/carbon nanotube composite aerogel material, preparation and application thereof | |
| CN105129927B (en) | The preparation method of graphene/carbon nano-tube aeroge composite capacitance-type desalting electrode | |
| CN104392845A (en) | Stretchable linear supercapacitor and lithium ion battery preparation method | |
| CN110387061B (en) | MXene-PDMS composite foam with hollow structure and preparation method and application thereof | |
| CN109331751A (en) | The graphene-based aerogel material and preparation method thereof for having tough structure | |
| CN104297301A (en) | Ammonia gas sensor based on polyaniline/graphene nanoribbons/silicon dioxide/silicon | |
| CN106783210B (en) | The preparation method of the hollow super electric material of nucleocapsid ZnCo2O4-RGO flexibilities | |
| CN112999885A (en) | MXene-GO composite membrane with humidity response and preparation method and application thereof | |
| CN109659521A (en) | A kind of preparation method of high-performance sodium-ion battery vanadic anhydride/grapheme composite positive electrode material | |
| CN107601464A (en) | Graphene oxide plural gel of carbon quantum dot reduction and its production and use | |
| CN107481865A (en) | A kind of all-solid-state flexible micro super capacitor based on GQD/ cobalt hydroxide composites | |
| EP3913706A1 (en) | Pre-lithiated negative electrode and preparation method therefor, and lithium ion battery and supercapacitor having pre-lithiated negative electrode | |
| Palem et al. | Ultrasonically decorated zinc cobaltate on nanocellulose interface for supercapacitors | |
| CN106024425A (en) | Preparation method of carbon annotube/ cotton compound | |
| Yu et al. | Conductive hydrogels with 2D/2D β-NiS/Ti3C2Tx heterostructure for high-performance supercapacitor electrode materials | |
| CN109867306B (en) | Low-temperature preparation method of mesoporous manganese dioxide nanosheets | |
| Chen et al. | Microstructured flexible pressure sensor based on nanofibrous films for human motions and physiological detection | |
| Zhou et al. | Hydrothermal synthesis of graphene/nickel oxide nanocomposites used as the electrode for supercapacitors | |
| Wang et al. | Scalable synthesis of Ti 3 C 2 T x–arginine and serine-functionalized carbon quantum dot microspheres for high performance supercapacitors | |
| CN103449500A (en) | Method for preparing cuprous oxide @carbon/graphene nanometer level structure hybrid materials through ultrasonic waves | |
| CN107240511B (en) | Graphene hybrid electrode of flexible self-supporting and the preparation method and application thereof | |
| WO2019153907A1 (en) | Low internal resistance and high power graphene supercapacitor electrode sheet and preparation method therefor | |
| CN106898493A (en) | Hollow nucleocapsid NiCo2O4The preparation method of the flexible super electric materials of RGO |
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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhong Mingfeng Inventor after: Wu Wengang Inventor after: Zhang Zhijie Inventor after: Zhang Tengfei Inventor before: Zhong Mingfeng Inventor before: Wu Wengang Inventor before: Zhang Zhijie Inventor before: Zhang Tengfei |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |