CN109916527A - A kind of production method of graphene doped polymer temperature sensor - Google Patents
A kind of production method of graphene doped polymer temperature sensor Download PDFInfo
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- CN109916527A CN109916527A CN201910054684.6A CN201910054684A CN109916527A CN 109916527 A CN109916527 A CN 109916527A CN 201910054684 A CN201910054684 A CN 201910054684A CN 109916527 A CN109916527 A CN 109916527A
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Abstract
The production method that the present invention proposes a kind of graphene doped polymer temperature sensor, the following steps are included: A: preparation GNPs/PDMS nanocomposite solution (graphene-dimethyl silicone polymer nanocomposite solution) pours into GNPs/PDMS nanocomposite solution in template；B: bubble removing processing is carried out to the GNPs/PDMS nanocomposite solution in template, template is placed in baking oven internal heating curing；C: the template after baking being taken out, and after being cooled to room temperature, and takes out manufactured film in template；D: the resistance value of detection film at different temperatures is temperature sensor after thin film data detection is qualified.In this application, preparation step is simple, does not need complex device, at low cost；It may be implemented by being obtained with the function that measurement accuracy reaches 0.01 grade of temperature sensor with a small amount of graphene；Realize a kind of manufacture of preferable flexible and repeatability substrate temperature sensor, the temperature range that the graphene doped polymer temperature sensor produced can be born is the temperature range that PDMS can be born.
Description
Technical field
The present invention relates to temperature sensor manufacture technology field more particularly to a kind of graphene doped polymer temperature sensing
The production method of device.
Background technique
Temperature sensor refers to the sensor that can be experienced temperature and be converted into usable output signal.This patent is to utilize resistance
Sensing, conventional, electric-resistance sensing is metal with temperature change, and resistance value also changes.For different metal, temperature is every
Once, resistance change is different, and resistance value can be directly as output signal for variation.There are two types of change class altogether for resistance
Type is divided into positive temperature coefficient and negative temperature coefficient.Positive temperature coefficient is resistance value increase as the temperature rises, the reduction resistance of temperature
Value reduces；Negative temperature coefficient is resistance value reduction as the temperature rises, and the reduction resistance value of temperature increases.
Dimethyl silicone polymer (PDMS) is a kind of the macromolecule organic silicon compound, it can show good elastic, low
Glass transition temperature, low-surface-energy, highly-breathable, splendid insulator, stable chemical performance and thermal stability.Its is at low cost,
Using simple, as using most common organic polymer material.PDMS under liquid is a kind of liquid of toughness, is called silicon
Oil.And the PDMS after solidifying is a kind of transparent flexible silica gel, has the characteristics that hydrophobic, waterproof and inertia.Production side
Just simple and time-consuming short, at low cost, transparency is high, and adaptive is strong, can bond at normal temperature with various material.Have simultaneously low
Young's modulus, so structure have high resiliency.
Graphene (GNPs) is used as a kind of ideal two-dimensional structure, has high conductivity, superior flexibility, biggish table
Area and stronger mechanical strength.Compare the sensor of metal material, and the temperature sensor of carbon nanomaterial has compatibility
With the potentiality of low casting amount.So far, it when preparing the flexible sensor based on graphene, generally selects and considers graphene
It mixes in elastomer matrix, the method that the excellent characteristic of graphene is combined with the flexibility of elastomer matrix and ductility,
High-sensitivity temperature sensor is prepared on Flexible formwork assembly.In addition, in the different graphene nano knots of fine supporting layer over-assemble
Structure is compound on Flexible formwork assembly, and to obtain flexible sensor, in the process, complicated manufacturing process needs to improve.It is soft
Property piezoresistance sensor can be realized by combining advantageous nano material in conductive and structure with elastic material with can
Receive the nanocomposite of temperature performance.
Summary of the invention
The purpose of the invention is to provide a kind of production method of graphene doped polymer temperature sensor, Ke Yishi
A kind of manufacture of the sensor of existing flexible substrate, the temperature range that the temperature range of sensor measurement can bear for PDMS, i.e., -40
Degree Celsius to 200 degrees Celsius；It is the measurement accuracy that can reach 0.01 grade with a small amount of (1%~2%) graphene, reduces cost.
To achieve the goals above, the production method that the present invention proposes a kind of graphene doped polymer temperature sensor,
The following steps are included:
A: preparation GNPs/PDMS nanocomposite solution (graphene-dimethyl silicone polymer nanocomposite solution), it will be described
GNPs/PDMS nanocomposite solution pours into template；
B: bubble removing processing is carried out to the GNPs/PDMS nanocomposite solution in the template, the template is set
In baking oven internal heating curing；
C: the template after baking is taken out, and after being cooled to room temperature, takes out manufactured film in the template；
D: the resistance value of the film at different temperatures is detected, is temperature sensing after the thin film data detection is qualified
Device.
Further, described in step A in the production method of the graphene doped polymer temperature sensor
The preparation step of GNPs/PDMS nanocomposite solution is as follows:
A: PDMS (dimethyl silicone polymer) solution is poured into container；
B: GNPs (graphene) powder is added in the PDMS solution, mixed solution is obtained after mixing, in the mixing
Curing agent is added in solution, obtains the GNPs/PDMS nanocomposite solution after uniform stirring mixing.
Further, described in step b in the production method of the graphene doped polymer temperature sensor
The weight ratio of mixed solution and the curing agent is 10:1.
Further, described in step b in the production method of the graphene doped polymer temperature sensor
After mixed solution adds the curing agent, 0.5h is stirred clockwise.
Further, described in step A in the production method of the graphene doped polymer temperature sensor
GNPs/PDMS nanocomposite solution is poured in the template, shakes the template, keeps the GNPs/PDMS nano combined molten
Liquid flows back dynamic in the template, and the final GNPs/PDMS nanocomposite solution is uniformly attached in the template.
Further, described in step B in the production method of the graphene doped polymer temperature sensor
Template is placed in 0.5h in vacuum drying oven, carries out bubble removing processing to the GNPs/PDMS nanocomposite solution.
Further, described in step B in the production method of the graphene doped polymer temperature sensor
The baking temperature of baking oven is 90 DEG C, baking time 1.5h.
Further, in the production method of the graphene doped polymer temperature sensor, in step D, by institute
It states film to be placed on experimental bench, adjusts the temperature of the experimental bench, under various temperature conditions, pass through insulation measurement instrument
Detect the resistance value of the film.
Compared with prior art, the beneficial effects are mainly reflected as follows: preparation step is simple, does not need complexity and sets
It is standby, it is at low cost；It may be implemented to reach 0.01 grade by being obtained with measurement accuracy with the graphene of a small amount of (1%~2%)
The function of temperature sensor；The temperature sensor of graphene doping of the invention is able to achieve one compared with conventional temperature sensor
The manufacture of preferable flexible and repeatability the substrate temperature sensor of kind；The graphene doped polymer temperature sensing produced
The temperature range that the temperature range that device can be born can bear for PDMS, i.e., -40 degrees Celsius to 200 degrees Celsius.
Detailed description of the invention
Fig. 1 is the flowage structure schematic diagram of the production method of graphene doped polymer temperature sensor in the present invention；
Fig. 2 is the thermometer sensor DS18B20 figure based on graphene doped polymer temperature sensor.
Wherein: 1-PDMS solution, 2-GNPs powder, 3- mixed solution, 4- curing agent, 5-GNPs/PDMS are nano combined molten
Liquid, 6- template, 7- film.
Specific embodiment
It is carried out more below in conjunction with production method of the schematic diagram to graphene doped polymer temperature sensor of the invention
Detailed description, which show the preferred embodiment of the present invention, it should be appreciated that those skilled in the art can modify and retouch herein
The present invention stated, and still realize advantageous effects of the invention.Therefore, following description should be understood as art technology
Personnel's is widely known, and is not intended as limitation of the present invention.
In the description of the present invention, it should be noted that " transverse direction ", " vertical if any term " center " for the noun of locality
To ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position
Relationship is set, the narration present invention is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It constructs and operates with specific orientation, with particular orientation, should not be understood as limiting specific protection scope of the invention.
The present invention is more specifically described by way of example referring to attached drawing in the following passage.According to following explanation, the present invention
The advantages of and feature will become apparent from.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio,
Only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
As shown in Figure 1, the production method that the present invention proposes a kind of graphene doped polymer temperature sensor, including it is following
Step:
A-a: PDMS (dimethyl silicone polymer) solution is poured into container；
A-b: GNPs (graphene) powder is added in PDMS solution, mixed solution is obtained after mixing, according to mixed solution
Weight ratio with curing agent is 10:1, and curing agent is added in mixed solution, stirs 0.5h clockwise, obtains after uniform stirring mixing
It obtains GNPs/PDMS nanocomposite solution (graphene-dimethyl silicone polymer nanocomposite solution)；
A-c: GNPs/PDMS nanocomposite solution is poured in template, is shaken moving template, is kept GNPs/PDMS nano combined
Solution flows back dynamic in template, and final GNPs/PDMS nanocomposite solution is uniformly attached in template.
B: since during pouring soln and rolling moving template, GNPs/PDMS nanocomposite solution can generate bubble, will
Template is placed in 0.5h in vacuum drying oven, carries out bubble removing processing to GNPs/PDMS nanocomposite solution, template is placed in baking oven and is added
Heat cure, the baking temperature of baking oven are 90 DEG C, baking time 1.5h；
C: standing after the template after baking is taken out, until taking out in template after the film cooling to room temperature of curing molding
It is prepared by manufactured film, i.e. GNPs/PDMS nano compound film (graphene-dimethyl silicone polymer nano compound film)
At；
D: film is placed on experimental bench, adjusts the temperature of experimental bench, under various temperature conditions, is surveyed by insulation resistance
Measuring appratus applies certain voltage to film, to detect the resistance value of film.As shown in Fig. 2, when dut temperature changes, by
It can change in the volume of the principle expanded with heat and contract with cold, graphene-doped dimethyl silicone polymer matrix, thus graphene body
Its different resistance value of product levels variation, concentration also can be different, i.e., can be used to monitoring temperature by the variation of resistance value
Variation is temperature sensor after thin film data detection is qualified.
To sum up, in the present embodiment, the production method of the graphene doped polymer temperature sensor of proposition, preparation step
Simply, complex device is not needed, it is at low cost；It may be implemented by being obtained with measurement with the graphene of a small amount of (1%~2%)
Precision reaches the function of 0.01 grade of temperature sensor；The temperature sensor of graphene doping of the invention, passes with conventional temperature
Sensor is compared, and a kind of manufacture of preferable flexible and repeatability substrate temperature sensor is able to achieve；The graphene produced
The temperature range that doped polymer temperature sensor can be born, i.e., -40 degrees Celsius to 200 degrees Celsius.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (8)
1. a kind of production method of graphene doped polymer temperature sensor, which comprises the following steps:
A: preparation GNPs/PDMS nanocomposite solution (graphene-dimethyl silicone polymer nanocomposite solution), it will be described
GNPs/PDMS nanocomposite solution pours into template；
B: bubble removing processing is carried out to the GNPs/PDMS nanocomposite solution in the template, the template is placed in baking
Case internal heating curing；
C: the template after baking is taken out, and after being cooled to room temperature, takes out manufactured film in the template；
D: the resistance value of the film at different temperatures is detected, is temperature sensor after the thin film data detection is qualified.
2. the production method of graphene doped polymer temperature sensor according to claim 1, which is characterized in that step
In A, the preparation step of the GNPs/PDMS nanocomposite solution is as follows:
A: PDMS (dimethyl silicone polymer) solution is poured into container；
B: GNPs (graphene) powder is added in the PDMS solution, mixed solution is obtained after mixing, in the mixed solution
Interior addition curing agent obtains the GNPs/PDMS nanocomposite solution after uniform stirring mixing.
3. the production method of graphene doped polymer temperature sensor according to claim 2, which is characterized in that step
In b, the weight ratio of the mixed solution and the curing agent is 10:1.
4. the production method of graphene doped polymer temperature sensor according to claim 2, which is characterized in that step
In b, after the mixed solution adds the curing agent, 0.5h is stirred clockwise.
5. the production method of graphene doped polymer temperature sensor according to claim 1, which is characterized in that step
In A, the GNPs/PDMS nanocomposite solution is poured in the template, shakes the template, and the GNPs/PDMS is made to receive
Rice composite solution flows back dynamic in the template, and the final GNPs/PDMS nanocomposite solution is uniformly attached to the mould
On plate.
6. the production method of graphene doped polymer temperature sensor according to claim 1, which is characterized in that step
In B, the template is placed in 0.5h in vacuum drying oven, carries out bubble removing processing to the GNPs/PDMS nanocomposite solution.
7. the production method of graphene doped polymer temperature sensor according to claim 1, which is characterized in that step
In B, the baking temperature of the baking oven is 90 DEG C, baking time 1.5h.
8. the production method of graphene doped polymer temperature sensor according to claim 1, which is characterized in that step
In D, the film is placed on experimental bench, adjusts the temperature of the experimental bench, under various temperature conditions, passes through insulation resistance
Measuring instrument detects the resistance value of the film.
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| CN110423469A (en) * | 2019-08-22 | 2019-11-08 | 中南大学 | A kind of flexibility temperature sensor and preparation method thereof |
| CN110776667A (en) * | 2019-11-11 | 2020-02-11 | 浙江农林大学 | Piezoresistive sensing device material and preparation method and application thereof |
| CN112362189A (en) * | 2020-11-13 | 2021-02-12 | 浙江理工大学 | Preparation method of flexible transparent temperature sensor |
| WO2021182907A1 (en) * | 2020-03-12 | 2021-09-16 | (주)아모레퍼시픽 | Sensor for measuring temperature change amount |
| CN114295247A (en) * | 2022-01-07 | 2022-04-08 | 华东师范大学 | Flexible temperature sensor, preparation method thereof and body temperature monitoring system |
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| CN114295247A (en) * | 2022-01-07 | 2022-04-08 | 华东师范大学 | Flexible temperature sensor, preparation method thereof and body temperature monitoring system |
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