CN108109317A - A kind of resistor-type detection/early warning sensor and application - Google Patents
A kind of resistor-type detection/early warning sensor and application Download PDFInfo
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- CN108109317A CN108109317A CN201711117865.6A CN201711117865A CN108109317A CN 108109317 A CN108109317 A CN 108109317A CN 201711117865 A CN201711117865 A CN 201711117865A CN 108109317 A CN108109317 A CN 108109317A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/40—Impregnation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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Abstract
The present invention relates to field of functional materials, to solve infrared ray fire alarm traditional at present and smoke detector, existing deficiency and the defect present invention propose a kind of new resistor-type hypersensitive detection/early warning sensor in use, it is made of low-tension supply, warning light, fire alarm composite material, several be sequentially connected of conducting wire, the wherein described fire alarm composite material is made by melamine foams, graphene oxide, containing silicon additive, and the parts by weight of each component are：Melamine foams 25 ~ 45, graphene oxide 8 ~ 40, containing silicon additive 15 ~ 67, this is simple for process efficiently, low in raw material price.The invention also provides a kind of application of resistor-type detection/early warning sensor, for monitoring and preventing all kinds of combustible materials in high fiery residence risk zones, reduce the generation that even avoids fiery residence and its caused by loss.
Description
Technical field
The present invention relates to field of functional materials, make more particularly to a kind of resistor-type detection/early warning sensor with it
For the application of detection/early warning.
Background technology
The combustible materials such as macromolecule are indispensable materials in people's daily life；With regard to building field；With regard to thermoplastic poly
For urethane rigid foam, in developed countries such as West Europe, North Americas, it is always the heat-insulated main material of building heat preservation.So
And the flue gas containing hypertoxic hydrogen cyanide can be generated in this kind of combustible material combustion process, people's death by suffocation is may result in the short time
It dies.According to official of Fire-Fighting Bureau under the Ministry of Public Security wechat public platform message, 2016, national fire 31.2 ten thousand of being informed of a case altogether, 1582 people were dead,
1065 people are injured, caused by 37.2 hundred million yuan of direct property loss.In face of the annual fire incident so frequently occurred, how to prevent
With the generation of monitoring fire, will be particularly important so as to the injures and deaths and property loss for the personnel of reducing.
The method of tradition prevention and monitoring fire is pressed there are mainly two types of principles point：Infrared ray fire alarm and smog alert
Device.The principle of this two classes fire alarm is to sense smog product to reach alarm when fire occurs, and sensitivity is higher, in room
Inside it is widely used.But they also have the shortcomings that apparent：Infrared ray fire alarm is easily by the shadow of various heat sources
It rings, penetration capacity is poor；Cigarette sense alarm is chiefly used in indoor environment, only after a period of time occurs for fire and can generate a large amount of cigarettes
Alarm could occur during mist, it is impossible to timely and effectively detection/early warning is carried out before fire occurs, and the alarm after fiery residence generation is rung
It is more than 100 seconds between seasonable（Fire Technol., 2000, 36, 89）.However, rate of propagation is exceedingly fast when combustible material burns
（80 seconds or so propagation of flame height are more than 8 meters, Fire Safety Journal, and 2011,46,317）Or even in more than 10 seconds
It will result in fatal harm.Therefore, after the burning of fiery residence the Novel fire residence sensor of Rapid Alarm realize fiery residence Rapid Alarm and
Early warning is active demand before burning.
The content of the invention
For solve traditional infrared ray fire alarm at present and smoke detector in use existing deficiency and
Defect, the present invention propose a kind of new resistor-type hypersensitive detection/early warning sensor, this is simple for process efficiently, former
Expect cheap.
The invention also provides a kind of applications of resistor-type detection/early warning sensor.For monitoring and preventing high fire
All kinds of combustible materials in residence risk zones, reduce even avoid fiery residence generation and its caused by loss.
The present invention is achieved by the following technical solutions：A kind of resistor-type detection/early warning sensor is by low tension
Source, warning light, detection/early warning composite material, conducting wire is several is sequentially connected composition, wherein the detection/early warning
Composite material is made by melamine foams, graphene oxide, containing silicon additive, and the parts by weight of each component are：Melamine foams 25 ~ 45, oxygen
Graphite alkene 8 ~ 40, containing silicon additive 15 ~ 67.
Preferably, it is one group of dry cell by low-tension supply, alarm lamp one, detection/early warning composite material passes through
Conducting wire connects, you can resistive type detection/early warning sensor is made.This kind of resistor-type detection/early warning sensor has
Not in cigarette propagated sensation sensor, the monitoring to fire condition after fire occurs cannot be only used for, it can also be used to which temperature less than polymer
Early detection/early warning during fire point to fire.In addition, such sensor have preferable hydrophobicity, can meet indoor and outdoor and
Use under adverse weather condition.
The preparation method of the detection/early warning composite material is：It is water-soluble that melamine foams are immersed into graphene oxide
In liquid, after centrifugation 70-90 DEG C dry 0.5-5h, repeatedly several times after immerse again in the solution containing silicon additive, 70-90 DEG C after centrifugation
Dry 0.5-5h, repeatedly several times after, be made detection/early warning composite material.The insulation oxygen being covered on melamine foams skeleton
Graphite alkene, which meets open fire, rapidly to change into highly conductive graphene, realizes overdelicate detection/early warning.
Preferably, the volumetric concentration of graphene oxide water solution is 0.5-5mg/ml.Graphene oxide is selected from and uses graphite
For graphene oxide, graphene oxide, the oxygen made from carbon nano-fiber made from carbon nanotubes is raw material made from raw material
One or more of graphite alkene.
Solvent is selected from tetrahydrofuran in solution containing silicon additive（THF）, dimethyl sulfoxide (DMSO)（DMSO）, n- methyl pyrrolidones
（NMP）, n,N-Dimethylformamide（DMF）Middle one kind, volumetric concentration 0.3-4mg/ml.
It is described to contain silicon additive selected from super-hydrophobic containing silicon additive.Preferably, it is selected from ten trifluoro octyl groups, three second containing silicon additive
Oxysilane modified manometer silicon dioxide, tridecafluoro-n-octyltriethoxysilane modified nano-titanium dioxide, three ethoxy of n-octyl
Base silane modified manometer silicon dioxide, octadecyltriethoxy silane are modified antimony oxide, octadecyl triethoxysilicane
One or more of silica that alkane is modified.The super-hydrophobic nanometer containing silicon additive of last layer is coated in composite material surface
After particle, the water contact angle of composite material has reached 150 ° or more.
Preferably, be made of containing silicon additive the nano particle of several different scale, such as 20nm and 400nm arranges in pairs or groups,
50nm and 250nm arranges in pairs or groups, 10nm and 500nm etc., it is further preferred that particle scale differs 5 ~ 50 times.
The rate of centrifugation is 500 ~ 5000rmp, and centrifugation time is 2 ~ 30 minutes.The resistor-type detection so built/
Graphene oxide dosage is few in early warning sensor.
A kind of resistor-type detection/application of the early warning sensor in detection/early warning of the present invention, the present invention is based on
The graphene oxide of insulation can be reduced to rapidly the principle of superconduction graphene at a certain temperature and under flame condition, utilize
Simple process is prepared for graphene oxide package flame-retardant sponge material, and is connected with warning light and low-tension supply, constructs
Resistor-type fire sensor.
Compared with prior art, the beneficial effects of the invention are as follows：
（1）Preparation method is simple, cheap to be easy to get；
（2）Detection/early warning composite material Ultralight（Density about 10 ~ 20kg/m3）, detection/early warning composite material surpasses
It is hydrophobic；Detection/early warning composite material has outstanding compression reaction performance, and the interference in the anti-external world is strong（Compressive deformation 60%,
Repeated Compression can still reply for 100 times）；
（3）Detection/early warning sensor has overdelicate detection/early warning performance.
Description of the drawings
Fig. 1 is a kind of schematic diagram of resistor-type detection/early warning sensor of the present invention；
Fig. 2 is detection/early warning composite material that the present invention is prepared, and passes through SEM（Scanning electron microscope）To sample
The composite material microscopic appearance figure that the surface topography of product is scanned；
Fig. 3 is the schematic diagram that detection/early warning composite material that the present invention is prepared is placed on soft feather；
Fig. 4 is detection/early warning composite material that the present invention is prepared, and sample is connected with material stretch test machine
The compressive strength and the relational graph of time that the test of continuous compression performance is drawn；
Fig. 5 is detection/early warning composite material that the present invention is prepared, and carries out water to sample with contact angle tester and connects
The test schematic diagram of feeler；
Fig. 6 is the simulated experiment figure that alarm occurs rapidly for detection/early warning sensor prepared by the present invention；
Fig. 7 lab diagrams without alarm of fire when fire occurs for combustible for pure melamine foams；
Fig. 8 be detection/early warning sensor for being prepared of the present invention when fire occurs for combustible, detection/early warning
The lab diagram of alarm occurs rapidly for sensor.
Specific embodiment
The present invention is described in further detail below by embodiment, raw materials used commercially available in embodiment or use
It is prepared by conventional method.
It should be appreciated that the specific embodiments described herein are merely to illustrate and explain the present invention, it is not used to
The limitation present invention.
Embodiment 1：
25mg melamine foams are immersed in 1mg/ml using graphite as in graphene oxide water solution made from raw material, take out 3000rpm
Then centrifugation 5 minutes dries 3h for 80 DEG C.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 8mg is in melamine foams
On.Double scales that the n-octytriethoxysilane of 0.5mg/ml is modified are dipped in again（10nm and 200nm）Nanometer titanium dioxide
Silicon（Mass ratio is 1:1 mixing）Tetrahydrofuran dispersion liquid in 3000rpm centrifuge 5 minutes, then 80 DEG C baking 3h.It is so repeatedly more
It is secondary, it is visited until the modification super-hydrophobic particle dip-coating of 67mg on graphene oxide/melamine foams composite material, obtains a kind of fire
Survey/early warning composite material 1.
By dry cell, warning light, detection/early warning composite material 1 prepared by embodiment 1 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 1.
Embodiment 2：
45mg melamine foams are immersed in 1mg/ml using carbon nanotubes as in graphene oxide water solution made from raw material, are taken out
500rpm is centrifuged 10 minutes, then dries 3h for 80 DEG C.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 40mg exists
On melamine foams.Double scales that the n-octytriethoxysilane of 0.5mg/ml is modified are dipped in again（10nm and 200nm）It receives
Rice silica（Mass ratio is 1:1 mixing）Tetrahydrofuran dispersion liquid in 500rpm centrifuge 10 minutes, then 80 DEG C baking 3h.Such as
This is repeated multiple times, until 15mg the dip-coating of modification super-hydrophobic particle on graphene oxide/melamine foams composite material, Yi Zhonghuo
Calamity detection/early warning composite material 2.
By dry cell, warning light, detection/early warning composite material 2 prepared by embodiment 2 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 2.
Embodiment 3：
35mg melamine foams are immersed in 1mg/ml using carbon nano-fiber as in graphene oxide water solution made from raw material, are taken out
5000rpm is centrifuged 2 minutes, then dries 3h for 80 DEG C.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 24mg exists
On melamine foams.Double scales that the n-octytriethoxysilane of 0.5mg/ml is modified are dipped in again（25nm and 500nm）It receives
Rice titanium dioxide（Mass ratio is 1:1 mixing）Tetrahydrofuran dispersion liquid in 5000rpm centrifuge 2 minutes, then 80 DEG C baking 3h.Such as
This is repeated multiple times, until 41mg the dip-coating of modification super-hydrophobic particle on graphene oxide/melamine foams composite material, Yi Zhonghuo
Calamity detection/early warning composite material 3.
By dry cell, warning light, detection/early warning composite material 3 prepared by embodiment 3 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 3.
Embodiment 4：
30mg melamine foams are immersed in 1mg/ml using graphite as in graphene oxide water solution made from raw material, take out 2000rpm
Then centrifugation 8 minutes dries 5h for 70 DEG C.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 10mg is steeped in melamine
On foam.Double scales that the octadecyltriethoxy silane of 0.5mg/ml is modified are dipped in again（25nm and 500nm）Nanometer two
Silica（Mass ratio is 1:1 mixing）DMF dispersion liquids in 2000rpm centrifuge 8 minutes, then 70 DEG C baking 5h.It is so repeatedly more
It is secondary, until 60mg the dip-coating of modification super-hydrophobic particle on graphene oxide/melamine foams composite material, a kind of detection/
Early warning composite material 4.
By dry cell, warning light, detection/early warning composite material 4 prepared by embodiment 4 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 4.
Embodiment 5：
30mg melamine foams are immersed in 1mg/ml using carbon nano-fiber as in graphene oxide water solution made from raw material, are taken out
2000rpm is centrifuged 8 minutes, then dries 0.5h for 90 DEG C.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 10mg
On melamine foams.Double scales that the tridecafluoro-n-octyltriethoxysilane of 0.5mg/ml is modified are dipped in again（50 Hes
250nm）Nanmeter antimong trioxide（Mass ratio is 1:1 mixing）NMP dispersion liquids in 2000rpm centrifuge 8 minutes, then 90 DEG C baking
0.5h.It is so repeated multiple times, until the modification super-hydrophobic particle dip-coating of 60mg is in graphene oxide/melamine foams composite material
On, a kind of detection/early warning composite material 5.
By dry cell, warning light, detection/early warning composite material 5 prepared by embodiment 5 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 5.
Embodiment 6：
30mg melamine foams are immersed in the graphene oxide water solution of 1mg/ml, 2500rpm is taken out and centrifuges 6 minutes, then 80
DEG C dry 2h.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 10mg is on melamine foams.It is dipped in again
2500rpm centrifugations 6 in the DMSO dispersion liquids for the 500nm silica that the tridecafluoro-n-octyltriethoxysilane of 0.5mg/ml is modified
Minute, then dry 2h for 80 DEG C.It is so repeated multiple times, until the modification super-hydrophobic particle dip-coating of 60mg is in graphene oxide/melamine
On foamed composite, a kind of detection/early warning composite material 6.
By dry cell, warning light, detection/early warning composite material 6 prepared by embodiment 6 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 6.
Embodiment 7：
45mg melamine foams are immersed in the graphene oxide water solution of 1mg/ml, 4500rpm is taken out and centrifuges 3 minutes, then 90
DEG C dry 1h.It so repeats to test repeatedly, until the amount dip-coating of the graphene oxide of 15mg is on melamine foams.It is dipped in again
Double scales that the octadecyltriethoxy silane of 0.5mg/ml is modified（10nm and 500nm）Nanmeter antimong trioxide（Mass ratio
For 1:1 mixing）Tetrahydrofuran dispersion liquid in 4500rpm centrifuge 3 minutes, then 90 DEG C baking 1h.It is so repeated multiple times, until
On graphene oxide/melamine foams composite material, a kind of detection/early warning is compound for the modification super-hydrophobic particle dip-coating of 40mg
Material 7.
By dry cell, warning light, detection/early warning composite material 7 prepared by embodiment 7 is connected by conducting wire, such as Fig. 1
It is shown, obtain resistive type detection/early warning sensor 7.
Test case 1
（1）The composite material being scanned to the embodiment 1-7 detection/early warning composite material surface patterns prepared is micro-
Shape appearance figure is seen as shown in Fig. 2, what can be will be apparent that sees a microscopic appearance of entire sample, graphene oxide layer is bonded very much
Be attached on the skeleton of melamine foams, form a good network-like structure, and the white on graphene oxide
Grain is modified super-hydrophobic double scale nanometer silica for bulky grain（The small particle silicas being attached to above has failed because scale is small
It is whole to show）.
（2）Detection prepared by embodiment 1-7/early warning composite material 1-7 is placed on the feather that can be floatd with the wind, is such as schemed
Shown in 3, the shape of feather is without the variation that occurs, then in one piece of sample of superposition careful above, also without generating any bending
The phenomenon that.This sufficiently presents the Ultralight of this detection/early warning composite material of our inventions（Density for 10 ~
20kg/m3）.
（3）Detection prepared by embodiment 1-7/early warning composite material 1-7 material stretch test machines to sample into
The test of the continuous compression performance of row, as shown in Figure 4.In the amount to sample compression 60%, move in circles 100 times, we can send out
Existing its still maintains good shape reversibility.Therefore, this detection/early warning composite material that we invent is external
Boundary shows very strong mechanics interference.Inevitably bending under normal conditions, compression and shock all will not be to its performances
It has an impact.
（4）Detection prepared by embodiment 1-7/early warning composite material 1-7 carries out sample with contact angle tester
The test of hydrophobic angle, as shown in Figure 5.It is modified it was found that covering one layer of double scale on the GO lamellas for wrapped up melamine foams skeleton
Hydrophobic nanoparticles after, the hydrophobic angle of sample has reached 154.3 °, has had reached a good super-hydrophobic value（Hydrophobic angle
150 ° and more than be super-hydrophobic）.The application range of detection/early warning composite material so will be greatly widened, for example, can
It is installed in often by the environment that rainwater is influenced or humidity is larger with what is trusted.
Test case 2
（1）Resistive type detection/early warning sensor 1-7 prepared by application examples is individually placed to 350 DEG C before fire of danger
At a temperature of, as shown in fig. 6, detection/early warning composite material is reduced, resistance reduces rapidly, detection/early warning sensor
Alarm.
（2）Resistive type detection/early warning sensor 1-7 prepared by application examples is individually placed to high polymer, fire occurs
When, as shown in figure 8, detection/early warning composite material is reduced, resistance reduces rapidly, detection/early warning sensor report
It is alert.
Comparative example
It will be without being together in series as the processed pure melamine foams of embodiment 1-7 and dry cell, alarm of fire lamp, such as by conducting wire
Shown in Fig. 7, when fire occurs, warning light does not work, and illustrates that pure foam does not have alarm of fire.
Detection/early warning composite material obtained by embodiment has satisfactory Ultralight, good to reply
Property, outstanding super-hydrophobicity possesses overdelicate detection/early warning in detection/early warning sensor.
Claims (10)
- A kind of 1. resistor-type detection/early warning sensor, which is characterized in that the resistor-type detection/early warning sensing Device is made of low-tension supply, warning light, detection/early warning composite material, several be sequentially connected of conducting wire, wherein the fire Detection/early warning composite material is made by melamine foams, graphene oxide, containing silicon additive, and the parts by weight of each component are：Melamine foams 25 ~ 45, graphene oxide 8 ~ 40, containing silicon additive 15 ~ 67.
- A kind of 2. resistor-type detection/early warning sensor according to claim 1, which is characterized in that the fire The preparation method of detection/early warning composite material is：Melamine foams are immersed in graphene oxide water solution, in 70-90 after centrifugation DEG C dry 0.5-5h, repeatedly several times after immerse again in the solution containing silicon additive, after centrifugation 70-90 DEG C baking 0.5-5h, it is repeatedly several After secondary, detection/early warning composite material is made.
- A kind of 3. resistor-type detection/early warning sensor according to claim 2, which is characterized in that graphene oxide The volumetric concentration of aqueous solution is 0.5-5mg/ml.
- A kind of 4. resistor-type detection/early warning sensor according to claim 1 or 2 or 3, which is characterized in that oxidation Graphene is selected from the graphene oxide made from graphite is raw material, the graphene oxide made from carbon nanotubes is raw material, with receiving One or more of graphene oxide made from rice carbon fiber.
- 5. a kind of resistor-type detection/early warning sensor according to claim 1, which is characterized in that containing silicon additive Solvent is a kind of in tetrahydrofuran, dimethyl sulfoxide (DMSO), n- methyl pyrrolidones, n,N-Dimethylformamide in solution, volume Concentration is 0.3-4mg/ml.
- 6. a kind of resistor-type detection/early warning sensor according to claim 1 or 2 or 5, which is characterized in that siliceous Auxiliary agent contains silicon additive selected from super-hydrophobic.
- 7. a kind of resistor-type detection/early warning sensor according to claim 6, which is characterized in that selected containing silicon additive From tridecafluoro-n-octyltriethoxysilane modified manometer silicon dioxide, tridecafluoro-n-octyltriethoxysilane modified nano-silica Titanium, n-octytriethoxysilane modified manometer silicon dioxide, octadecyltriethoxy silane are modified antimony oxide, 18 One or more of silica that alkyl triethoxysilane is modified.
- 8. a kind of resistor-type detection/early warning sensor according to claim 7, which is characterized in that containing silicon additive by The nano particle composition of several different scale.
- A kind of 9. resistor-type detection/early warning sensor according to claim 2, which is characterized in that the rate of centrifugation For 500 ~ 5000rmp, centrifugation time is 2 ~ 30 minutes.
- 10. a kind of a kind of resistor-type detection/early warning sensor as described in claim 1 is in detection/early warning Using.
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| CN201711117865.6A CN108109317B (en) | 2017-11-13 | 2017-11-13 | A kind of resistor-type fire detection/early warning sensor and application |
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| CN201711117865.6A CN108109317B (en) | 2017-11-13 | 2017-11-13 | A kind of resistor-type fire detection/early warning sensor and application |
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| CN109021983A (en) * | 2018-07-13 | 2018-12-18 | 杭州师范大学 | A kind of preparation method and its fire alarm application of modified graphene oxide fire-retardant film |
| CN110491070A (en) * | 2019-08-01 | 2019-11-22 | 杭州师范大学 | A kind of resistor-type fire distant early warning/detection sensor systems |
| CN110540198A (en) * | 2019-09-25 | 2019-12-06 | 广东工业大学 | Graphene oxide-based self-repairing flame-retardant composite film, preparation thereof and fire alarm |
| ES2957845A1 (en) * | 2023-09-21 | 2024-01-26 | Univ Madrid Politecnica | Fire alarm sensor, house and furniture comprising said sensor and method of manufacturing fire alarm sensor (Machine-translation by Google Translate, not legally binding) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109021983A (en) * | 2018-07-13 | 2018-12-18 | 杭州师范大学 | A kind of preparation method and its fire alarm application of modified graphene oxide fire-retardant film |
| CN109021983B (en) * | 2018-07-13 | 2020-12-08 | 杭州师范大学 | Preparation method of modified graphene oxide flame-retardant film and fire early warning application thereof |
| CN110491070A (en) * | 2019-08-01 | 2019-11-22 | 杭州师范大学 | A kind of resistor-type fire distant early warning/detection sensor systems |
| CN110540198A (en) * | 2019-09-25 | 2019-12-06 | 广东工业大学 | Graphene oxide-based self-repairing flame-retardant composite film, preparation thereof and fire alarm |
| ES2957845A1 (en) * | 2023-09-21 | 2024-01-26 | Univ Madrid Politecnica | Fire alarm sensor, house and furniture comprising said sensor and method of manufacturing fire alarm sensor (Machine-translation by Google Translate, not legally binding) |
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