阅读说明：本技术 一种心电图检测用石墨烯ecg干电极 (A kind of Electrocardiography dry electrode of graphene ECG ) 是由 周琦 隆彦群 陈建农 于 2019-08-08 设计创作，主要内容包括：本发明公开一种心电图检测用石墨烯ECG干电极。所述的石墨烯ECG干电极是在碳纤维材料成型的电极上,直接涂敷一层厚度约为1nm-10nm石墨烯薄层,形成高性能的复合材料,进一步提高电极的导电性和耐磨性,形成石墨烯干电极。(The present invention discloses a kind of dry electrode of Electrocardiography graphene ECG.The dry electrode of graphene ECG is on the molding electrode of carbon fibre material, and being directly coated with a layer thickness is about 1nm-10nm graphene thin layer, forms high performance composite material, further increases the electric conductivity and wearability of electrode, forms the dry electrode of graphene.)

1. a kind of Electrocardiography dry electrode of graphene ECG, which is characterized in that on the dry electrode of carbon fiber forming, coating One layer of graphene thin layer, increases its electric conductivity and wearability.

2. the Electrocardiography as described in claim 1 dry electrode of graphene ECG, which is characterized in that the graphene For single-layer graphene, multi-layer graphene or their mixing.

3. the Electrocardiography as described in claim 1 dry electrode of graphene ECG, which is characterized in that the preparation step It suddenly include: the solution for 1) preparing graphene aqueous solution or organic solvent；2) by graphene solution be coated in the carbon fiber at On the dry electrode of type；3) by roasting or hot-press method, the graphene film on shaped electrode will be coated in and be carbonized.

4. the Electrocardiography as described in claim 1 dry electrode of graphene ECG, which is characterized in that the preparation step 2) it to be repeated as many times, until the graphene coat is uniform enough to reach certain thickness requirement.

5. the Electrocardiography as described in claim 1 dry electrode of graphene ECG, which is characterized in that the preparation step 3) roasting will be divided into two stages: it is roasted 3 hours first under 400 DEG C, nitrogen charging environment, then again under vacuum state, and 1000 DEG C, it roasts 1 hour.

6. the Electrocardiography as described in claim 1 dry electrode of graphene ECG, which is characterized in that the graphene applies Covering can also be dried after spraying or impregnated every time, repeatedly for several times, until applying using spray coating method using hair is impregnated It covers and uniform reaches certain thickness.

Technical field

The present invention relates to a kind of Electrocardiography dry electrodes of graphene ECG.

Background technique

Graphene is a kind of nano-carbon material, has very high intensity and excellent electric conductivity.And it is cheap, it can be big The material of scale preparation.

What the acquisition of existing electrocardiogram was usually realized by adhesive type wet electrode, in order to ensure skin and electrocardioelectrode Between good contact, this kind of electrode needs using conductive paste.Under mobile wearing and family's use environment, traditional adhesive type Wet electrode acquisition electrocardio shows following problem:

First is that the conductive paste smeared between electrode and skin causes conductive effect to decline, so that signal detection since mutability is dry Sensitivity decline, cannot be used for a long time.

Second is that conductive paste contacts for a long time with skin, high concentration electrolyte will cause skin allergy or itch, even The serious symptoms such as chafing.

Third is that it is inconvenient to use using wet electrode, it needs medical professional to operate, cleaning skin is also needed after test Skin.

In order to solve the above problem, using dry electrode, and meet practical ECG detection by the electric conductivity of the dry electrode of increase It needs.Common dry electrode method for making is on the mixing material injection molding electrode that PC adds carbon pricker to tie up, and plating metal increases it Electric conductivity, usual silver-plated/silver chlorate (Ag/AgCI) layer.But silver-plated on the electrode/silver chlorate (Ag/AgCI) layer, in addition at This height also will cause environmental pollution with outside the shortcomings that wearing no resistance.

Summary of the invention

In order to solve the above problem, the present invention discloses a kind of dry electrode of Electrocardiography graphene ECG.The graphene The dry electrode of ECG is on the molding electrode of carbon fibre material, and being directly coated with a layer thickness is about 1nm-10nm graphene thin layer, shape At high performance composite material, the electric conductivity and wearability of electrode are further increased, forms the dry electrode of graphene.

The graphene is single-layer graphene, multi-layer graphene or their mixing.

The molding electrode of the carbon fibre material is the electrode that dry electrode shape is made of carbon fibre material.

The present invention provides the graphene coated step that the dry electrode of graphene is made and includes on the electrode that the carbon fiber shapes It is rapid:

1) solution of single-layer graphene, multi-layer graphene or their admixed graphite aqueous solution or organic solvent is prepared；

2) graphene solution of step 1) is coated on the electrode of carbon fiber forming and is formed on its surface film, dried；

3) again by roasting or hot-press method, graphene film is carbonized, thus obtain have wearability conductive graphene with Carbon fibre composite.

4) step 2 is repeated as needed to 3), circulation coating is carried out, until reaching required thickness.

The aqueous solution of the graphene or the mass concentration of organic solution are as follows: 0.1-10%.

The coating method is spraying or impregnates.Soaking time is 1-24 hours.

The maturing temperature is 250-1500 DEG C, and roasting condition is vacuum or inert gas environment, and the time is that 1-10 is small When, using baking inphases method.

The hot-press method are as follows: the graphene coated carbon fibre material in surface is put into the electrode shape and is touched in tool, It is hot-forming with hot press, hot pressing temperature are as follows: 250-400 DEG C, the time is 1-6 hours.

The beneficial effects of the present invention are:

A kind of low cost, the simple dry electrode preparation method of graphene ECG of manufacturing process are provided.Using graphene solution coating side Method prepares the dry electrode of graphene ECG, particularly suitable for manufacturing the complex-shaped dry electrode product of graphene ECG.Using graphite The dry electrode of ECG of alkene coating has the advantages of wearability is high, good conductivity, signal acquisition high sensitivity.

Detailed description of the invention

Fig. 1 is a kind of dry electrode of graphene ECG of the preferred embodiment of the invention；

Fig. 2 is the dry electrode preparation flow one of graphene ECG of the preferred embodiment of the invention；

Fig. 3 is the dry electrode preparation flow two of graphene ECG of the preferred embodiment of the invention.

Specific embodiment

Presently in connection with attached drawing and preferred embodiment, the present invention is described in further detail.These attached drawings are simplified Schematic diagram, basic principle, basic structure and the basic function that only the invention is illustrated in a schematic way, therefore it only shows and this hair Bright related composition.

Those of ordinary skill in the art may be aware that some variants and equivalent substitute of the invention, but these become Body and equivalent substitute should not be construed as having exceeded protection scope of the present invention.

The grapheme material that the present invention uses can directly buy the single-layer graphene sold in the market or multiple graphene Pulvis is adding water or ethanol solution to be diluted to graphene aqueous solution or graphene ethanol solution.Single-layer graphene is with a thickness of 0.6- 1.2nm.Multi-layer graphene is with a thickness of 1-3nm, and 2-5 layers.

A kind of dry electrode of graphene ECG of the preferred embodiment of the invention as shown in Figure 1,1 is the dry electricity of the graphene ECG Pole shape, when in use, mainly the face with multiple microprojections 3, the tested patient body appointed part skin of contact are tested Human-body potential between two electrodes is poor.2 be the graphene coat of the electrode surface, plays raising wearability, raising is led Electrically, increase the function of pole strength, the graphene coat covers the entire electrode surface with the thickness of 1-10nm.

The dry electrode preparation flow one of graphene ECG of the preferred embodiment of the invention as shown in Figure 2, prepares single-layer graphene The dry electrode of ECG.Process S21, prepares mono-layer graphite aqueous solution: 1) taking 2g single-layer graphene powder, the dilution of 1L water is added；It 2) will be dilute The mono-layer graphite aqueous solution released is put into ultrasound processing equipment, is handled 30 minutes, so that the single-layer graphene water that dilution is good The full and uniform mixing of solution；Into process S22, mono-layer graphite aqueous solution is sprayed on the dry electrode: 1) described The mono-layer graphite aqueous solution that dry electrode surface spraying S21 is prepared, and allow its naturally dry；2) it sprays again and in room temperature Under dry；3) it checks whether that spraying is uniform and reaches certain thickness, if not reaching the uniformity and thickness requirement, continue back at 2) it, sprays and dries again, if reaching uniform thickness requirement, into process S23, roast the dry electrode sprayed: 1) will The dry electrode sprayed is put into vacuum drying oven, under nitrogen protection, with 400 DEG C temperature calcination 3 hours；2) then again in vacuum Under, with 1000 DEG C temperature calcination 1 hour；Process S24 takes out the roasting dry electrode product of graphene ECG, stone from vacuum drying oven The thickness of black alkene is about 2nm.

The dry electrode preparation flow two of graphene ECG of the preferred embodiment of the invention as shown in Figure 3, prepares multi-layer graphene The dry electrode of ECG.Process S31, prepares Multi-layer graphite aqueous solution: 1) taking 5g multi-layer graphene powder, the dilution of 1L water is added；2) will The Multi-layer graphite aqueous solution diluted is put into ultrasound processing equipment, is handled 30 minutes, so that the multi-layer graphene that dilution is good The full and uniform mixing of aqueous solution；Into process S32, Multi-layer graphite aqueous solution is coated to the dry electrode by impregnating It is upper: 1) the dry electrode to be impregnated 2 hours in the Multi-layer graphite aqueous solution that S31 is prepared, take out and allow its naturally dry； 2) it repeats 1) 3 times；Into process S33, roasts the dry electrode sprayed: 1) the dry electrode sprayed being put into vacuum drying oven, In Under nitrogen protection, with 400 DEG C temperature calcination 3 hours；2) then again under vacuum, with 1000 DEG C temperature calcination 1 hour；Process S34 takes out the roasting dry electrode product of graphene ECG from vacuum drying oven, and the thickness of graphene is about 10nm.

The advantageous effects of preferred embodiment of the present invention:

Direct benefit of the invention is: the dry electrode of graphene ECG obtained using the embodiment of the present invention, and graphite ene coatings are flat It is whole, smooth, there is metallic luster, conductivity improves several magnitudes, silver-plated/silver chlorate (Ag/AgCI) layer peer-level is reached, Intensity and wearability also greatly improve.

It is enlightenment with above-mentioned embodiment according to the present invention, through the above description, relevant staff completely may be used Without departing from the scope of the technological thought of the present invention', to carry out various changes and amendments.The technical model of this invention It encloses and is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.