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Application of graphite conductive adhesive to prepare electrode-detection binder

A conductive adhesive and graphite technology, applied in the direction of conductive adhesives, adhesives, adhesive types, etc., can solve the problems of decreased electrode conductivity, increased electrode internal resistance and polarization, and slow electrode activation, achieving excellent The effect of conductivity and adhesion, simple and easy preparation method, and controllable electrode area

Inactive Publication Date: 2010-10-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of these binders will lead to a sharp drop in the conductivity of the electrode. At the same time, too much binder will adhere to the active material, and the activation of the electrode will slow down, which will also lead to an increase in the internal resistance and polarization of the electrode; If the amount of agent is less, the electrode bonding strength is not enough, and the electrode active material is easy to fall off, resulting in the failure of the sensing electrode
Therefore, the existing electrode bonding materials have been difficult to meet the requirements of current high-precision electrochemical detection applications, and the problem of electrode bonding and fixing has restricted the development of chemically modified electrodes and biosensors.

Method used

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  • Application of graphite conductive adhesive to prepare electrode-detection binder
  • Application of graphite conductive adhesive to prepare electrode-detection binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1.7 grams of E-12 epoxy resin (E-44 epoxy resin), 1.0 grams of graphite powder (natural graphite), 0.60 grams of 1,4-butanediol diglycidyl ether, 0.07 grams of polyethylene polyamine, as follows Steps to deploy:

[0031] Take 1.0 g of graphite powder, put it in 0.50M KOH and treat it at 100°C for 30 minutes, cool, filter, wash with distilled water until neutral; then use 0.50MHNO 3 Repeat the treatment according to the same steps; finally, vacuum-dry at 120°C to clean and activate the graphite for later use.

[0032] The graphite powder of the above-mentioned treatment, 0.60 grams of 1,4-butanediol diglycidyl ether, after fully mixing and grinding in a mortar, then add 1.7 grams of E-12 epoxy resin, mix and grind evenly, then add polyethylene polyvinyl ether dropwise 0.07 g of amine was mixed and ground to obtain graphite conductive adhesive.

[0033] Roll the graphite conductive adhesive into a film, cut it into a film of the required size, and bond it to the substra...

Embodiment 2

[0035] 1.7 grams of E-12 epoxy resin (JF-220 epoxy resin), 1.3 grams of graphite powder (artificial graphite), 0.35 grams of terpineol, 0.07 grams of trimethylhexamethylenediamine, and prepare according to the following steps :

[0036] Take 1.3 grams of graphite powder, put it into 0.50M KOH and treat it at 100°C for 30 minutes, cool, filter, wash with distilled water until neutral; then use 0.50MHNO 3 Repeat the treatment according to the same steps; finally, vacuum-dry at 120°C to clean and activate the graphite for later use.

[0037] The graphite powder of the above-mentioned treatment, 0.35 grams of terpineol, after fully mixing and grinding in a mortar, then add 1.7 grams of E-12 epoxy resin, mix and grind evenly, then add 0.07 grams of trimethylhexamethylenediamine dropwise , mixed and ground to obtain graphite conductive adhesive.

[0038] Roll the graphite conductive adhesive into a film, cut it into a film of the required size, and bond it to the substrate glassy ...

Embodiment 3

[0040] E-12 epoxy resin (E-12 and JF-220 epoxy resin weight mix) 0.50 grams, graphite powder (natural graphite and artificial graphite equal weight mix) 0.30 grams, ethylene glycol butyl ether acetate 0.17 grams, diamine Base diphenyl sulfone 0.03 gram, allocate according to the following steps:

[0041] Take 0.30 g of graphite powder, put it into 0.50M KOH and treat it at 100°C for 30 minutes, cool, filter, wash with distilled water until neutral; then use 0.50MHNO3 Repeat the treatment according to the same steps; finally, vacuum-dry at 120°C to clean and activate the graphite for later use.

[0042] The graphite powder of above-mentioned processing, ethylene glycol butyl ether acetate 0.17 gram, after fully mixing and grinding in mortar and mortar, add E-12 epoxy resin 0.50 gram again, mixing and grinding is even, then drips diamino diphenyl sulfone ( DDS) 0.03 g, mixed and ground to obtain graphite conductive adhesive.

[0043] Roll the graphite conductive adhesive into a...

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Abstract

The invention discloses application of graphite conductive adhesive to prepare a chemically modified electrode or biosensor electrode binder for electrochemical biological sensing detection, wherein, the graphite conductive adhesive comprises the following components by weight percent: 40-60% of an epoxy resin, 20-40% of graphite powder, 10-30% of a diluent and 1.5-3% of an amine curing agent. The graphite conductive adhesive has excellent electrical conductivity, excellent adhesiveness, wide and flat electrochemical window, convenient use, and excellent application prospect in electrochemical biological detection.

Description

technical field [0001] The invention belongs to the technical field of microelectronic connection materials, and in particular relates to the application of a graphite conductive glue in the preparation of chemically modified electrodes or biosensor electrode binders for electrochemical biosensing detection. Background technique [0002] Electrochemical testing methods are widely used in the fields of environmental protection and biomedical monitoring, food hygiene monitoring, and material science research because of their simple operation, economical speed, instantaneity, and high sensitivity. Among them, electrochemical biosensing detection is the current focus of attention, and it is also an important field of electrochemical testing applications. However, biomolecules such as proteins (amino acids), nucleic acids (DNA / RNA) and sugars (glucose) are organic molecules with poor electrical conductivity, and the resistance of the biomolecular test system is very large; and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04C09J9/02G01N27/327
Inventor 崔静洁刘宏孙德辉周伟家任娜王冠聪赵洪石陈丽梅马厚义王继扬
Owner SHANDONG UNIV
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