CN106872542A

CN106872542A - The preparation of detachable single heat or cold, hot two-purpose electrode

Info

Publication number: CN106872542A
Application number: CN201510914695.9A
Authority: CN
Inventors: 吴剑; 张叶; 高焕
Original assignee: Anhui University of Traditional Chinese Medicine AHUTCM
Current assignee: Anhui University of Traditional Chinese Medicine AHUTCM
Priority date: 2015-12-13
Filing date: 2015-12-13
Publication date: 2017-06-20

Abstract

The invention discloses a kind of preparation method of detachable electrode, belong to electrochemical field, it is mainly characterized by the heating by thermode by PUR（Or it is cold and hot）Element, temperature-sensing element, electrode member etc. are mixed together, and it has dismountable feature, facilitate the maintenance and maintenance of electrode.

Description

The preparation of detachable single heat or cold, hot two-purpose electrode

Technical field

It is more particularly to a kind of detachable hot or cold the present invention relates to a kind of heat or the preparation method of cold, hot two-purpose electrode The making of hot dual purpose electrodes.Its belong to electrochemical analysis field can improve related electrode service life facilitate electrode making and Safeguard.

Background technology

Thermode technology directly or indirectly heats the technology of the simultaneously temperature on coordination electrode surface, the technology by certain method Background noise can be reduced, the sensitivity and reappearance, reduction electrode fouling effect for detecting is improved, therefore in electrochemical analysis neck Domain causes common concern, is widely used in electrochemiluminescdetection detection system, Flow Injection Amperometric Analysis system, capillary The aspects such as electrophoresis/chip-electrochemistry/electrochemiluminescdetection detection system.The method of its heating electrode has：1st, laser [1] or poly- Burnt microwave [2] is heated, but the experimental facilities of complexity limits their use, and heating surface (area) (HS is larger；2nd, Gao Zhen is used The heating [3] of width and high-frequency alternating current coordination electrode, this method can preferable coordination electrode surface temperature, but high amplitude and height The generation of frequency alternating current is more complicated, it is necessary to by the conversion of two steps, and the electronic noise that palpus consideration ohmic polarization causes.3rd, direct current The electrode of electric indirect method [4,5] heating.The method preparation method is simple and easy to apply, with low cost to be used widely, this seminar It can be 0 to have developed cold, hot two-purpose electrode [6] its advantage using indirectly heat method^oC~90^oCoordination electrode temperature between C, High temperature is conducive to improving detection sensitivity, and low temperature then has the thing for utilizing the biological samples such as protective enzyme or decomposing at high temperature, volatilize Matter.But the heating of useful indirect method electrode, heating system and electrode is the integrated design in itself so if heating system Or the electrode system whole thermoelectricity electrode systems that go wrong can all be damaged, the present invention is for the development of defects based on PUR Detachable indirectly to heat or temperature controlled electrode system of freezing, the system can prepare cold, hot two-purpose with semiconductor chilling plate Electrode system can also prepare single thermoelectricity electrode systems of PID intelligent temperature controls.It is mainly characterized by the property that can utilize PUR Matter quickly prepares above-mentioned electrode system, while can easily when electrode system or heated for controlling temperature system go wrong pass through again The method lower related system of dismounting for heating PUR is repaired, so as to reduced on the basis of operation is simplified maintenance cost, Improve the service life of electrode.

Bibliography

[1]P.H. Chen, R.L. McCreey, Anal. Chem. 68 (1996) 3958.

[2]F. Marken, S.L. Matthews, R.G. Compton, B.A. Coles, Electroanalysis. 12 (2000) 267.

[3]S.A. Baranski, Anal. Chem. 74 (2002) 1294

[4]Wu D, Wu J, Zhu Y H, et al. Electroanalysis, 2010,22:1217-1222.

[5] Wu Aihong, Sun Jianjun, Wu Shaohua, analytical chemistry, 39 (2011), 1898

[6] Wu Jian, Zhang Ye, Sun Huanhuan, assay office, 34 (2015), 866

The content of the invention

The present invention can be very good the characteristics of mutually copying pattern by PUR and silicon rubber, by required for thermode Element such as temperature-sensing probe, heating element heater, electrode etc. are put well according to suitable position, then pour the PUR heated after fusing On said elements surface, adhesive curing to be heated can easily prepare corresponding electrode system.When damaging occurs in above-mentioned original paper then Damage element easily can be disassembled into maintenance or the element for more renewing to the method for softening temperature by heating PUR, because This greatly facilitates the preparation and maintenance of electrode.

Brief description of the drawings

The vertical clamping plates of Fig. 1 PMMA prepare PDMS blocks

Fig. 2 prepares copper thermode schematic diagram, wherein 1 is PDMS egative films, 2 is PDMS square frame pieces, and 3 is copper sheet, and 4 is heating element heater Or semiconductor element, 5 is Pt100 temperature-sensing probes

Specific embodiment is as follows：

1st, according to monomer：Curing agent is 10：1 proportional arrangement dimethyl silicone polymer（PDMS）, pour organic glass in Fig. 1 Glass（PMMA）Rectangular die in, 60^oHeated under C and obtain within 2 ~ 5 hours the rectangle PDMS pieces of solidification as egative film（This Operation can equally be prepared with SE901 electron pouring sealants, F625 silicon rubber etc.）.Another piece of PDMS piece knife is equally prepared at it Middle body cuts out 50mm 40mm long rectangle inside casings wide, places it in and PDMS moulds are made on PDMS egative films.

Specific embodiment is as follows：

2nd, by one piece of scale copper（Thickness is 200um, and a upper wire is welded as contact conductor in rear）It is close to above-mentioned The surface of lower master film, notices that copper sheet cross section will be close to one side of square frame, by heating element heater in the PDMS mould square frames of preparation（Can Made by oneself with one section of U-shaped nickel chromium triangle heating plate, also can directly buy ceramic heating flake, such as prepare be cold, hot two-purpose electrode if using partly Conductor cooling piece）It is placed on the face at copper sheet rear portion, is smeared with a little heat-conducting cream between copper sheet and heating element heater and ensure heat transfer effect Rate, then Pt100 temperature-sensing probes are placed on the face in heating element heater center, plus a little heat-conducting cream is smeared and ensures heat transfer efficiency, institute The lead portion for having element will be placed on same direction, and each position of components is as shown in Figure 2.

3rd, by tight said elements, it is ensured that the contact between element, hot melt rubber stick is heated using thermosol gelgun（Softening temperature 80 ~150^oC）, it is uniformly coated on above-mentioned copper sheet, heating element heater, temperature-sensing probe after after its fusing, after adhesive curing is heated （White-opalescent state is presented）The position of all parts can tentatively be fixed.The PUR after fusing will be heated with pot again to pour into Enter in the square frame of PDMS moulds, it gets off from PDMS sur-face peelings after PUR is fully cured, obtain interior envelope said elements Hot melt blob of viscose（Copper sheet lower master film is exposed）.Can be exposed by copper sheet with reusable heat melten gel when preparing to be used directly as thermode Lower master film seal.Can be by a, the spin coating a thin layer insulating cement on its lower master film if when being used on micro-fluidic chip Fluid sealant（Thickness can be controlled in 10 ~ 20um by controlling spin speed) or b, using copper sheet lower bottom part as one side of template, with Interlayer centered on the U-shaped PDMS blocks contour with chip lower master film, another piece of PDMS piece being placed on poly (methyl methacrylate) plate is another Side, constitutes the vertical clamping plate of similar Fig. 1, insulating cement is irrigated in the middle of clamping plate and treats that prepared by its solidification and chip lower master film is highly consistent Insulation spacer.

The copper sheet termination that directly can be sealed PUR with scissors when the 4th, using cuts（Noting ten million can not cut heating Element or temperature-sensing probe part）, the copper strip surface for then being exposed with the sand papering of 600,1200,3000 mesh respectively is until reaching The effect of polishing is that can be used.

Its maximum temperature in use depends on the softening temperature of PUR when the 5th, being used as thermode, when it is used for micro- core The thickness of insulating layer difference gone to the bottom according to copper sheet when piece（A or b methods in 3）It is respectively adopted and is directly placed at microchip lower master film On just to confuser exit（Thermode prepared by a methods in 3）, or the pipeline of microchip being placed on after laminating fluctuating plate goes out At mouthful（Thermode prepared by the b methods in 3）.

6th, directly can be polished with sand paper when needing polishing such as electrode in use, when each unit of discovery thermode Part can control temp of heating element to PUR softening temperature when for example electrode, temperature-sensing probe, heating element heater go wrong Above or directly heat, the element that any needs can be removed after gum softening is heated is changed and safeguarded.

Claims

1. a kind of detachable controllable temperature electrode（Single hot or cold and hot electrode）Preparation method, it is characterized in that, it includes following step Rapid 1）PDMS pieces are prepared with vertical clamping plate；2）PDMS basic modes are prepared with above-mentioned PDMS pieces to have；3）By copper sheet, heating（Or semiconductor） Element, temperature-sensing probe etc. are placed into PDMS moulds；4）Tentatively fixed with PUR；5）Pour PUR and be completely fixed all units Part；6）Exposed copper sheet lower master film is sealed with PUR or insulating cement；7）It is that can be used to polish copper sheet cross section with sand paper；8）Electricity Pole element can easily heat dismounting and change related elements after fusing PUR after going wrong.

2. the preparation method of the detachable controllable temperature electrode according to described by claim 1, it is characterized in that can easily lead to Cross the mode dismounting and change element of heating PUR.

3. the preparation method of the detachable controllable temperature electrode according to described by claim 1, it is characterized in that by PUR with The characteristics of pattern can be mutually copied between PDMS is prepared.

4. the preparation method of the detachable controllable temperature electrode according to described by claim 1, it is characterized in that close by PUR Envelope copper sheet, heating（Or semiconductor）Element, temperature-sensing probe quick Fabrication related electrode.