CN102206419A - Sensitive material for flexible temperature sensor - Google Patents
Sensitive material for flexible temperature sensor Download PDFInfo
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- CN102206419A CN102206419A CN2011100827858A CN201110082785A CN102206419A CN 102206419 A CN102206419 A CN 102206419A CN 2011100827858 A CN2011100827858 A CN 2011100827858A CN 201110082785 A CN201110082785 A CN 201110082785A CN 102206419 A CN102206419 A CN 102206419A
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Abstract
A sensitive material for a flexible temperature sensor. The sensitive material is a composite material with a liquid organosilicon solidified at room temperature as a matrix, and comprises ingredients of, by weight, 100 parts of liquid organosilicon, 8-15 parts of conductive carbon fiber, 1-5 parts of carbon fiber and 8-10 parts of dispersant. Ingredients with a proportioning amount are mixed, dispersed uniformly by ultrasound, injected into a temperature sensor structural model, and solidified at room temperature to obtain the sensitive material. The material has good flexibility and temperature sensitive characteristic, and is suitable for a temperature sensor of any design.
Description
One, technical field
The present invention relates to a kind of temperature sensing modulator material, specifically a kind of sensitive material that is used for flexibility temperature sensor.
Two, background technology
At present, the sensitive material that is used for temperature sensor mainly is metal, metal oxide or semiconductor material etc., and these a few class materials do not have snappiness.People constantly attempt utilizing different principles and different materials for many years, develop flexible touch sensation sensor.Utilize graphite and polydimethylsiloxane blend to obtain conducing composite material as L.-C.Tsao of Taiwan Univ. etc., utilize this material to have the sensitive material of the characteristics of resistance temperature effect as flexible temperature sensing; People such as Donghua University's fourth immortality utilize electro-conductive fiber as conductive warp yarns and conductive warp yarn, and its machine-knitted structure that is interwoven mutually as temperature-sensing element, is detected the machine-knitted structure changes in resistance that is caused by the machine-knitted structure temperature variation; People such as Shanghai Inst. of Microsystem and Information Technology, Chinese Academy of Sci's car record cutting edge of a knife or a sword adopt MEMS technology to embed the temperature sensor that the metal thermistor is made flexible substrate in polyimide.
But the common problem that exists of all kinds of existing flexible touch sensation sensors comprises:
1, in the selection of material, material itself can not have good temperature sensing function and snappiness concurrently, and the cost height;
2, on the layout of sensor array array structure, because the restriction of selected material requires height to array structure, mainly be applicable to rigidity, built-up type array structure, can not be applicable to the tactile sensor array of any design, the scope of application is little;
3, on manufacture craft, existing flexible touch sensation sensor research mainly is to use MEMS technology and layering field engineering etc., and manufacture craft requires high, and cost is big.
Three, summary of the invention
The present invention is directed to above-mentioned existing in prior technology deficiency, a kind of sensitive material that is used for flexibility temperature sensor is provided, and technical problem to be solved is the array of temperature sensor structure that makes material have good temperature sensing function and snappiness concurrently and be applicable to any design.
The present invention deals with problems and adopts following technical scheme:
The temperature-sensitive material that is used for flexibility temperature sensor of the present invention is to be the matrix material of matrix with solidified liquid organosilicon under the room temperature, specifically add conductive carbon fibres peacekeeping carbon nano fiber and mix back resulting good temperature sensing performance and flexible matrix material of having concurrently of curing under room temperature in matrix, each component has following parts by weight:
Preferably:
Described liquid organosilicon is selected from mono-component liquid silicon rubber RTV GD401 or two component polydimethylsiloxane PDMSDC-184, and wherein single-component RTV GD401 is liquid in confined conditions, self-vulcanizing under uncovered condition; Two component PDMSDC-184 are made up of A, B agent, 90 parts of A agent, and 10 parts of B agent, A, B agent are liquid when depositing separately separately, both mix the back self-vulcanizing.
Described conductive carbon fibre is ECP-CF, and its mean length is 0.2mm, and mean diameter is 11-15 μ m, and resistivity is 4-7 * 10
-3Ω cm.
Described carbon nano fiber is TNCF, and its mean length is 5-50 μ m, and mean diameter is 200-400nm, and resistivity is 0.1 * 10
-3Ω cm.
Described dispersion agent is distillation petroleum naphtha, density 650-750kg/m
3
Above-mentioned various raw materials market is on sale.
The present invention is used for the preparation method of sensitive material of flexibility temperature sensor according to selecting for use the organosilicon kind to divide two kinds:
The one, select single-component liquid silastic RTV GD401 for use, under normal temperature, normal pressure, conductive carbon fibre, carbon nano fiber and dispersion agent are got the suspension first behind ultra-sonic dispersion; This suspension first is added among the liquid silastic RTV GD401, get suspension second through ultra-sonic dispersion again; Suspension second is injected the touch sensor structural models, and curing molding obtains flexible sensitive material under the room temperature.
The 2nd, select two component polydimethylsiloxane PDMS DC-184 for use, under normal temperature, normal pressure, conductive carbon fibre, carbon nano fiber and dispersion agent are got the suspension first behind ultra-sonic dispersion; This suspension first is added in the A agent of polydimethylsiloxane PDMSDC-184, get suspension second through ultra-sonic dispersion again; Add the B agent of PDMS DC-184 in suspension second, ultra-sonic dispersion gets suspension the third once more, and in the suspension third implantation temperature sensor construction model, curing molding obtains flexible sensitive material under the room temperature.
In order effectively to improve the compatibility of sensitive material on temperature sensing function and snappiness, the present invention selects for use the good liquid organosilicon of snappiness behind the curing molding as body material, mix by two kinds of fillers, when guaranteeing this material tactile sensing function, further improve its flexibility.The present invention adopts the method for liquid organosilicon moulding, sensitive material suspension can be filled in the arrangement of temperature sensor model of any design through curing molding, improve flexibility temperature sensor sensing function and flexible compatibility very effectively, be suitable for the arrangement of temperature sensor of design arbitrarily.Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention adopts liquid organosilicon as body material, and the organosilicon behind the curing molding has fine flexibility, has guaranteed the flexibility of temperature-sensitive material;
2, the present invention adopt conductive carbon fibre ECP-CF and carbon nano fiber be TNCF as conductive filler material, conductive carbon fibre ECP-CF mean length is 0.2mm, guarantees in flexible materials to realize the long-range conduction; Carbon fiber is that 5-50 μ m is easy to homodisperse in liquid silicone for the TNCF mean length, improve the electroconductibility of conductive carbon fibre overlapped points, reduce the consumption of conductive carbon fibre, have certain flexibility when making temperature-sensitive material have good temperature sensitive characteristic;
3, the present invention selects for use two kinds of carbon fibers to be dispersed in the liquid organosilicon body material, compare existing flexible touch sensation sensor material, as graphite-filled polydimethylsiloxane and electro-conductive fiber fabric, reduced the hardness of material effectively, the flexibility and the temperature sensitive effect of material have been improved;
4, the present invention adopts the method for liquid organosilicon moulding, makes material of the present invention can be applied to widened its applicable scope, and this method technology be simple in the arrangement of temperature sensor model of design arbitrarily, has reduced the cost of flexibility temperature sensor.
Four, description of drawings
Fig. 1 is the sensitivity characteristic curve of the temperature-sensitive material of embodiment 1, embodiment 2.
Fig. 2 is the opticmicroscope figure before embodiment 1 temperature-sensitive material solidifies.
Fig. 3 is the opticmicroscope figure after embodiment 1 temperature-sensitive material solidifies.
Fig. 4 is the sem photograph after embodiment 1 temperature-sensitive material solidifies.
Five, embodiment
Be described below below in conjunction with the accompanying drawing non-limiting examples.
Embodiment 1:
With conductive carbon fibre, Nano carbon fibers peacekeeping liquid organosilicon compound system, press following weight part proportioning:
Single component liquid silicon rubber RTV GD401:100 part;
Conductive carbon fibre: 8 parts;
Carbon nano fiber: 2 parts;
Dispersion agent: 10 parts.
Described conductive carbon fibre is ECP-CF, and its mean length is 0.2mm, and mean diameter is 11-15 μ m, and resistivity is 4-7 * 10
-3Ω cm.
Described carbon nano fiber is TNCF, and its mean length is 5-50 μ m, and mean diameter is 200-400nm, and resistivity is 0.1 * 10
-3Ω cm.
Described dispersion agent is distillation petroleum naphtha, density 650-750kg/m
3
Preparation process:
Under normal temperature, normal pressure, 8 parts of conductive carbon fibre ECP-CF, 2 parts of carbon nano fiber TNCF and 10 parts of dispersion agents are utilized FS-150 ultrasonication instrument, get the suspension first after ultra-sonic dispersion 30-40 minute; The suspension first is added among 100 parts of liquid silastic RTV GD401, ultra-sonic dispersion 20-30 minute suspension second; With in the suspension second implantation temperature sensor construction model, the self-vulcanizing moulding, molding time is 64-72 hour.
The temperature-sensitive material that obtains is carried out temperature sensitive characteristic test and opticmicroscope and scanning tunnel microscope analysis, the result of temperature sensitive characteristic test embodiment 1 rational curve as shown in Figure 1, opticmicroscope analysis chart such as Fig. 2 before the material cured, opticmicroscope analysis chart such as Fig. 3 after the material cured, scanning tunnel microscope analysis such as Fig. 4.
Embodiment 2:
With conductive carbon fibre, Nano carbon fibers peacekeeping liquid organosilicon compound system, press following weight part proportioning:
Two component polydimethylsiloxane PDMS DC-184:100 parts, wherein the A agent is 90 parts, 10 parts of B agent;
Conductive carbon fibre: 10 parts;
Carbon nano fiber: 4 parts;
Dispersion agent: 10 parts.
Described conductive carbon fibre is ECP-CF, and its mean length is 0.2mm, and mean diameter is 11-15 μ m, and resistivity is 4-7 * 10
-3Ω cm.
Described carbon nano fiber is TNCF, and its mean length is 5-50 μ m, and mean diameter is 200-400nm, and resistivity is 0.1 * 10
-3Ω cm.
Described dispersion agent is distillation petroleum naphtha, density 650-750kg/m
3
Preparation process:
Under normal temperature, normal pressure, 10 parts of conductive carbon fibre ECP-CF, 4 parts of carbon nano fiber TNCF and 10 parts of dispersion agents are utilized FS-150 ultrasonication instrument, get the suspension first after ultra-sonic dispersion 30-40 minute; The suspension first is added in 90 parts of A agent of 100 parts of polydimethylsiloxane PDMS DC-184, ultra-sonic dispersion 20-30 minute suspension second; Add 10 parts of the B agent of PDMS DC-184 in suspension second, ultra-sonic dispersion gets suspension the third once more, with in the suspension third implantation temperature sensor construction model, the self-vulcanizing moulding, molding time is 20-26 hour.
The temperature-sensitive material that obtains is carried out temperature sensitive characteristic test and opticmicroscope and scanning tunnel microscope analysis, the result of temperature sensitive characteristic test embodiment 2 rational curves as shown in Figure 1.
Claims (6)
1. sensitive material that is used for flexibility temperature sensor is to be the matrix material of matrix with solidified liquid organosilicon under the room temperature, it is characterized in that each component has following parts by weight:
2. sensitive material according to claim 1 is characterized in that each composition weight umber is:
3. sensitive material according to claim 1 and 2 is characterized in that: described liquid organosilicon is selected from mono-component liquid silicon rubber RTV GD401 or two component polydimethylsiloxane PDMS DC-184.
4. sensitive material according to claim 1 and 2 is characterized in that: described conductive carbon fibre is ECP-CF, and its mean length is 0.2mm, and mean diameter is 11-15 μ m, and resistivity is 4-7 * 10
-3Ω cm.
5. sensitive material according to claim 1 and 2 is characterized in that: described carbon nano fiber is TNCF, and its mean length is 5-50 μ m, and mean diameter is 200-400nm, and resistivity is 0.1 * 10
-3Ω cm.
6. sensitive material according to claim 3 is characterized in that: described dispersion agent is density 650-750kg/m
3The distillation petroleum naphtha.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102732039A (en) * | 2012-07-13 | 2012-10-17 | 合肥工业大学 | Graphene-based pressure-sensitive material for flexible tactile sensor and method for preparing same |
| CN102824168A (en) * | 2012-07-03 | 2012-12-19 | 上海交通大学 | Flexible physiological dry electrode and preparation method thereof |
| CN103333495A (en) * | 2013-07-08 | 2013-10-02 | 南京航空航天大学 | Adhesive material used for imitating gecko sole adhesive arrays and preparation method thereof |
| CN103808437A (en) * | 2014-03-04 | 2014-05-21 | 东北大学 | Differential type flexible piezoresistive device based on conductive polymer composite |
| CN105758542A (en) * | 2016-04-19 | 2016-07-13 | 中国人民解放军南京军区南京总医院 | Improved cell temperature sensor and manufacturing method thereof |
| CN106751908A (en) * | 2017-01-09 | 2017-05-31 | 北京工业大学 | A kind of 3D printing flexible conductive composite material and preparation method thereof |
| WO2017114440A1 (en) | 2015-12-31 | 2017-07-06 | Bluestar Silicones Shanghai Co., Ltd. | Electrically-conductive curable organosilicon rubber |
| CN110793658A (en) * | 2019-11-26 | 2020-02-14 | 青岛科技大学 | Polymer-based temperature-sensitive resistor with circuit protection function |
| CN111441108A (en) * | 2020-05-11 | 2020-07-24 | 武汉理工大学 | Preparation method of carbon fiber with temperature-sensitive characteristic |
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| CN101260237A (en) * | 2008-04-11 | 2008-09-10 | 合肥工业大学 | Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof |
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2011
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| CN101260237A (en) * | 2008-04-11 | 2008-09-10 | 合肥工业大学 | Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102824168A (en) * | 2012-07-03 | 2012-12-19 | 上海交通大学 | Flexible physiological dry electrode and preparation method thereof |
| CN102824168B (en) * | 2012-07-03 | 2015-01-07 | 上海交通大学 | Flexible physiological dry electrode and preparation method thereof |
| CN102732039A (en) * | 2012-07-13 | 2012-10-17 | 合肥工业大学 | Graphene-based pressure-sensitive material for flexible tactile sensor and method for preparing same |
| CN103333495A (en) * | 2013-07-08 | 2013-10-02 | 南京航空航天大学 | Adhesive material used for imitating gecko sole adhesive arrays and preparation method thereof |
| CN103333495B (en) * | 2013-07-08 | 2015-03-11 | 南京航空航天大学 | Adhesive material used for imitating gecko sole adhesive arrays and preparation method thereof |
| CN103808437A (en) * | 2014-03-04 | 2014-05-21 | 东北大学 | Differential type flexible piezoresistive device based on conductive polymer composite |
| CN103808437B (en) * | 2014-03-04 | 2016-02-03 | 东北大学 | The flexible piezo-resistance device of differential type based on conductive polymer composite |
| JP2019501275A (en) * | 2015-12-31 | 2019-01-17 | エルケム・シリコーンズ・シャンハイ・カンパニー・リミテッドＥｌｋｅｍ Ｓｉｌｉｃｏｎｅｓ Ｓｈａｎｇｈａｉ Ｃｏ．，Ｌｔｄ． | Conductive curable organosilicon rubber |
| WO2017114440A1 (en) | 2015-12-31 | 2017-07-06 | Bluestar Silicones Shanghai Co., Ltd. | Electrically-conductive curable organosilicon rubber |
| CN106928725A (en) * | 2015-12-31 | 2017-07-07 | 蓝星有机硅（上海）有限公司 | conductive curable organic silicon rubber |
| US10822473B2 (en) | 2015-12-31 | 2020-11-03 | Elkem Silicones Shanghai Co., Ltd. | Electrically-conductive curable organosilicon rubber |
| CN108779335B (en) * | 2015-12-31 | 2021-08-10 | 埃肯有机硅（上海）有限公司 | Conductive curable silicone rubber |
| CN105758542B (en) * | 2016-04-19 | 2018-07-13 | 中国人民解放军南京军区南京总医院 | A kind of improved cell temperature transducer and preparation method thereof |
| CN105758542A (en) * | 2016-04-19 | 2016-07-13 | 中国人民解放军南京军区南京总医院 | Improved cell temperature sensor and manufacturing method thereof |
| CN106751908A (en) * | 2017-01-09 | 2017-05-31 | 北京工业大学 | A kind of 3D printing flexible conductive composite material and preparation method thereof |
| CN106751908B (en) * | 2017-01-09 | 2020-03-27 | 北京工业大学 | 3D printing flexible conductive composite material and preparation method thereof |
| CN110793658A (en) * | 2019-11-26 | 2020-02-14 | 青岛科技大学 | Polymer-based temperature-sensitive resistor with circuit protection function |
| CN111441108A (en) * | 2020-05-11 | 2020-07-24 | 武汉理工大学 | Preparation method of carbon fiber with temperature-sensitive characteristic |
| CN111441108B (en) * | 2020-05-11 | 2021-07-06 | 武汉理工大学 | Preparation method of carbon fiber with temperature-sensitive characteristic |
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