Preparation method of textile electrode material and textile electrode material

Abstract

The invention discloses a preparation method of a textile electrode material and the textile electrode material. The preparation method comprises the steps that firstly, pretreated fabric is soaked ina dopamine hydrochloride solution, and polydopamine coated fabric is obtained; then, the polydopamine coated fabric is soaked in a silver-ammonia solution, a glucose solution is added after a certainperiod of time, and a silver-plated fabric is obtained; the silver-plated fabric is subjected to chlorination treatment in a sodium chloride solution through an electrochemical method, and a silver-silver chloride composite coating fabric is formed; finally, the silver-silver chloride composite coating fabric is modified in a conductive polymer monomer solution through an electrochemical method,and the silver-silver chloride-conductive polymer composite coating fabric is obtained. The surface specific resistance of the textile electrode material is 0.01-5 omega, the polarization impedance ina 0.9% sodium chloride solution is 10-1000 omega, the skin interface impedance is 1K omega-100M omega at 1Hz, and the phase angle variation within the frequency range of 0.5-50Hz is 0-30 degrees.

Description

technical field [0001] The invention relates to the technical field of electrode materials, in particular to a preparation method of a textile electrode material and the textile electrode material. Background technique [0002] The use of textile electrodes in human ECG monitoring has attracted extensive attention from researchers all over the world in recent years. Cardiovascular disease is the number one killer of human health. This type of disease is long-term, cumulative, and sporadic. It is difficult to detect it in time by routine health checkups, which brings a heavy medical burden to the patient's family and the entire society. Long-term monitoring, early diagnosis and early treatment are particularly important. Traditional disposable ECG measurement electrodes are usually metal-hydrogel electrodes, but the hydrogel will gradually dry up during use, affecting the performance of the electrodes; at the same time, the conductive electrolyte of the hydrogel can irritate...

AI Technical Summary

Problems solved by technology

The above textile electrodes all use relatively traditional conductive materials, and the materials used are relatively single, and the controllable preparation of electrode materials and the regulation of electrode interface properties have not been realized.

Application No. 201310461096.7 discloses a preparation method of textile electrodes for measuring ECG signals. A two-step method is used to prepare polypyrrole (PPY) coated conductive fabrics. First, the polypyrrole (PPY) coating is prepared by water bath method, and then it is put into pyrrole solution Electrochemical polymerization is carried out to obtain the textile electrode of polypyrrole (PPY) coated conductive fabric; the textile electrode prepared by this patent method has a large impedance, and the durability of the conductive polymer is poor, and the coating is easy to fall off after washing.

Xu Pengjun of Donghua University's doctoral thesis "Analysis of Mechanical Interaction between Textile Structure Electrode and Skin and Dynamic Noise Research for Body Surface ECG Monitoring" modified silver-coated yarn to obtain silver-silver chloride coated fabric as textile electrode; The silver-silver chloride coating obtained by this method is relatively fragile, and the silver chloride particles are exposed on the surface of the fiber, which is easy to fall off during use, thereby affecting the performance of the electrode.

Application No. 201811357957.6 discloses a graphene ECG electrode and its preparation method. Graphene, carboxymethyl cellulose and water are mixed to obtain a graphene conductive ink, and then the graphene conductive ink is printed on the fabric to obtain a flexible fabric ECG electrode. Electrode; the electrode prepared by this method has a large impedance and poor durability, making it difficult to use for a long time

None of the above methods can effectively control the interface performance of textile electrodes, and the durability of the prepared electrodes is poor, and the accuracy and consistency of the measured ECG signals are poor, so they are not suitable for long-term use as ECG monitoring electrodes.

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