WO2020103343A1 - Capteur de vêtement pouvant être porté, procédé de préparation et application associés - Google Patents

Capteur de vêtement pouvant être porté, procédé de préparation et application associés

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Publication number
WO2020103343A1
WO2020103343A1 PCT/CN2019/074929 CN2019074929W WO2020103343A1 WO 2020103343 A1 WO2020103343 A1 WO 2020103343A1 CN 2019074929 W CN2019074929 W CN 2019074929W WO 2020103343 A1 WO2020103343 A1 WO 2020103343A1
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WIPO (PCT)
Prior art keywords
optionally
layer
fabric
electrode layer
dielectric
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Application number
PCT/CN2019/074929
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English (en)
Inventor
Chuanfei Guo
Qingxian LIU
Junlong YANG
Jianming Zhang
Quan Wang
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Southern University Of Science And Technology
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Application filed by Southern University Of Science And Technology filed Critical Southern University Of Science And Technology
Publication of WO2020103343A1 publication Critical patent/WO2020103343A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0816—Measuring devices for examining respiratory frequency
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
    • A61B5/1114—Tracking parts of the body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified

Definitions

  • the present application belongs to the textile technical field and relates to a wearable garment sensor and preparation method and application thereof.
  • Clothes are an important symbol of the progress of human civilization, which shield people’s bodies and keep people warm. With the continuous advancement of science and technology and the improvement of living standards, people also hope that the garment industry will move toward functionalization, intelligence and humanization in addition to warm-preserving and cold-proof functions, and intelligent textiles that can be combined with medical technology have became a major mainstream research direction in high-tech textile field.
  • CN107890350A discloses a wearable motion sensor, a sensing circuit and a motion detecting method, which are provided with a silicone rubber dielectric film layer, upper and lower flexible electrode layers and upper and lower insulating protective layers; this invention causes discomfort when the human skin contacts and the sensor device due to the use of some hard solid substrates, and these substrates are generally airtight and are not suitable for use as fabrics.
  • CN103225204A discloses a wearable flexible sensor and preparation method thereof; the wearable flexible sensor comprises a flexible fabric, a conductive electrode layer and a sensor layer, wherein the surface of the flexible fabric is provided with a metal barrier layer, and an interstitial layer is arranged between the metal barrier layer and the conductive electrode layer.
  • the invention uses a conventional fabric as a substrate material, the interstitial layer and the sensor layer are dense and thus are disadvantageous to the breathability and hygroscopicity property of the final fabric and affect the wearing comfort.
  • CN2294989Y discloses a heat insulating cloth comprising a polyethylene layer, and a reflective heat-insulating layer composed of two polyethylene layers having concave and convex circular reflecting surfaces is attached to the lower surface of the polyethylene layer, and a layer of aluminum silver paste or tin silver paste metal reflective layer is sandwiched between the two polyethylene layers having reflective surfaces. Finally, venting holes are formed in the polyethylene layer.
  • the utility model has a certain heat insulating effect, it does not have the function of monitoring human motion and physiological signals, which limits its practical application range.
  • a wearable garment sensor that not only can monitor the movement and health signals of the human body in real time but also is waterproof, breathable, sweat-wicking, light and heat-insulating.
  • the purpose of the present application is to provide a wearable garment sensor and preparation method and application thereof.
  • the garment sensor provided by the present application not only can be used as a high-sensitivity sensor, but also has functions of waterproofness, air permeability and heat control, low raw material cost, simple preparation process, and convenient large-scale industrial production.
  • the present application provides a wearable garment sensor, wherein the garment sensor comprises a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the dielectric layer has a porous structure and an ionic liquid is loaded on pore walls of the dielectric layer.
  • Loading ionic liquid on pore walls of the dielectric layer does not cause blockage of the through holes and affect the air permeability of the material, and can greatly improve the sensitivity of the sensor and improve the accuracy of signal monitoring, thereby enabling the garment sensor provided by the present application to monitor the weak physiological signals of the human body (such as pulse, heartbeat, breath and the like) and thus greatly increasing the application scope of the present application.
  • the raw material for preparing the ionic liquid comprises any one selected from the group consisting of 1, 3-dimethylimidazolium methylsulfate, 1-ethyl-3-methylimidazolium dimethylphosphate, 1-ethyl-3-methylimidazolium hexafluorophosphate and 1-ethyl-3-methylimidazolium tetrafluoroborate, or a combination of at least two selected therefrom; wherein the typical but non-limiting combinations are: a combination of 1, 3-dimethylimidazolium methylsulfate and 1-ethyl-3-methylimidazolium dimethylphosphate, a combination of 1-ethyl-3-methylimidazolium dimethylphosphate and 1-ethyl-3-methylimidazolium hexafluorophosphate, a combination of 1, 3-dimethylimidazolium methylsulfate and 1-ethyl-3-methylimidazolium tetrafluoroborate,
  • the raw material for preparing the dielectric layer comprises any one selected from the group consisting of nitrocellulose, cellulose acetate, cellulose, polyimide, polyester, polyamide, polystyrene and polylactic acid, or a combination of at least two selected therefrom; wherein the typical but non-limiting combinations are: a combination of nitrocellulose and cellulose acetate, a combination of cellulose acetate and cellulose, a combination of nitrocellulose and polyimide, a combination of cellulose acetate, cellulose and polyamide, a combination of polyimide, polyester, polyamide and polystyrene, a combination of nitrocellulose, cellulose acetate, polyimide, polyamide, polystyrene and polylactic acid, optionally nitrocellulose.
  • the dielectric layer has a thickness of 0.1-1 mm, e.g. 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm and the like.
  • the dielectric layer has a pore size of 0.1-100 ⁇ m, e.g. 0.5 ⁇ m, 1 ⁇ m, 2 ⁇ m, 5 ⁇ m, 10 ⁇ m, 20 ⁇ m, 40 ⁇ m, 50 ⁇ m, 70 ⁇ m, 90 ⁇ m and the like.
  • both the first electrode layer and the second electrode layer have a reticulated porous structure.
  • the thicknesses of the first electrode layer and of the second electrode layer are independently selected from 80-500 nm, e.g. 90 nm, 100 nm, 150 nm, 200 nm, 250 nm, 300 nm, 400 nm, 450 nm and the like, optionally 80-200 nm, optionally 80 nm.
  • the pore sizes of the first electrode layer and of the second electrode layer are independently selected from 0.1-100 ⁇ m, e.g. 0.5 ⁇ m, 1 ⁇ m, 2 ⁇ m, 5 ⁇ m, 8 ⁇ m, 10 ⁇ m, 30 ⁇ m, 50 ⁇ m, 80 ⁇ m, 90 ⁇ m and the like, optionally 20-50 ⁇ m, optionally 50 ⁇ m.
  • the raw materials for preparing the first electrode layer and the second electrode layer are independently any one selected from the group consisting of carbon nanotubes, graphene, carbon black, gold, silver, copper, aluminum, polyaniline, polypyrrole and polythiophene, or a combination of at least two selected therefrom, wherein the typical but non-limiting combinations are: a combination of carbon nanotubes and graphene, a combination of graphene and carbon black, a combination of gold and silver, a combination of carbon nanotubes, graphene and polyaniline, a combination of graphene, carbon black, silver and polypyrrole, a combination of carbon nanotubes, graphene, silver, copper, aluminum and polythiophene, optionally silver.
  • the reticular electrode layer provided by the present application has low square resistance and can generate heat after being loaded with a low voltage, thereby realizing effective control of human body heat.
  • the fabric comprises any one selected from the group consisting of nylon fabric, polyester fabric, acrylic fabric, aramid fabric, hemp fabric, silk fabric, wool fabric and cotton fabric, or a combination of at least two selected therefrom, wherein the typical but non-limiting combinations are: a combination of nylon and polyester, a combination of polyester and acrylic, a combination of acrylic and aramid fabrics, a combination of nylon, polyester and hemp fabrics, a combination of acrylic, aramid, hemp and wool fabrics, a combination of aramid, hemp, wool, polyester, nylon and wool fabrics, optionally cotton fabric.
  • the fabric layer has a thickness of 0.1-50 mm, e.g. 0.5 mm, 1 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm and the like, optionally 0.1-20 mm, optionally 10 mm.
  • the fabric layer is provided with a hydrophobic layer on the side away from flexible sensor layer.
  • the hydrophobicity of the hydrophobic layer of the present application makes the fabric have a better waterproof effect and facilitates its application in outdoor sports.
  • the raw material for preparing the hydrophobic layer comprises any one selected from the group consisting of polytetrafluoroethylene, silica, ceramic, paraffin, polyethylene, polypropylene and polystyrene, or a combination of at least two selected therefrom, wherein the typical but non-limiting combinations are: a combination of polytetrafluoroethylene and silica, a combination of polypropylene and ceramic, a combination of polyethylene and paraffin, a combination of silica, ceramic and polystyrene, a combination of silica, ceramic, paraffin and polypropylene, a combination of polytetrafluoroethylene, silica, ceramic, paraffin, polyethylene and polypropylene, optionally silica.
  • the hydrophobic layer has a thickness of 1-50 ⁇ m, e.g. 3 ⁇ m, 5 ⁇ m, 8 ⁇ m, 10 ⁇ m, 20 ⁇ m, 30 ⁇ m, 40 ⁇ m, 45 ⁇ m and the like, optionally 5-20 ⁇ m, optionally 10 ⁇ m.
  • the present application constructs a multi-layer through-hole structure and combines the functions of a capacitive sensor and an ordinary fabric to prepare a multi-functional wearable garment sensor, which can monitor human motion signals or weak physiological signals, and is convenient and simple and has a wide range of applications.
  • the term “comprise (s)” means that in addition to the mentioned components, other components which impart different properties to the fabric can also be included.
  • the term “comprise (s) " as used in the present application may also be replaced by a closed term “is/are” or “consist (s) of” .
  • the present application provides a preparation method of the wearable garment sensor according to the first aspect, comprising the following steps:
  • the preparation method provided by the present application has simple process and low raw material cost, and can be used for large-scale industrial applications.
  • the method further comprises step (I) : coating a casting solution containing a hydrophobic material on one side of the fabric and solidifying the solution to obtain a hydrophobic-fabric layer.
  • a binder is dispersed in the casting solution.
  • a preparation method of the dielectric layer comprises: immersing a porous dielectric film in a solution containing an ionic substance followed by drying to obtain the dielectric layer.
  • the mass ratio of the ionic substance to the porous dielectric film is 1: (1-10) , e.g. 1: 2, 1: 3, 1: 4, 1: 5, 1: 6, 1: 7, 1: 8, 1: 9 and the like, optionally 1: 5.
  • the drying comprises any one selected from the group consisting of vacuum drying, heat drying, air blast drying and natural drying, or a combination of at least two selected therefrom, optionally natural drying.
  • the method for coating comprises any one selected from the group consisting of glass rod scraping, spray gun spraying, spin coating and drop coating, or a combination of at least two selected therefrom, wherein the typical but non-limiting combinations are: a combination of glass rod scraping and spray gun spraying, a combination of spray gun spraying and spin coating, a combination of spray gun spraying and drop coating, a combination of glass rod scraping, spray gun spraying and spin coating, a combination of glass rod scraping, spray gun spraying, spin coating and drop coating, optionally spray gun spraying.
  • the coating is carried out at a temperature of 25-100 °C, e.g. 28°C, 30°C, 35°C, 40°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C and the like, optionally 25-80 °C, optionally 40 °C.
  • the coating is carried out for a time of 1-10 min, e.g. 2 min, 3 min, 4 min, 5 min, 6 min, 7 min, 8 min, 9 min and the like, optionally 1-5 min, optionally 2 min.
  • the fixing is carried out by means of point fixing and/or line fixing with an adhesive.
  • the point fixing is performed by dot coating an adhesive to the fabric-first electrode layer or the dielectric-second electrode layer and then fixing it.
  • the line fixing is similar.
  • the line fixing further comprises: performing bonding and fixing treatment on the periphery of the fabric-first electrode layer and the dielectric-second electrode layer by using an adhesive.
  • the adhesive comprises any one selected from the group consisting of transparent tape, 3M tape, double-sided tape, epoxy resin, unsaturated polyester resin, phenolic resin, urethane rubber, neoprene rubber and butyl rubber, or a combination of at least two selected therefrom, wherein the typical but non-limiting combinations are: a combination of an ordinary transparent tape and epoxy resin, a combination of 3M transparent tape and unsaturated polyester resin, a combination of double-sided tape and phenolic resin, a combination of phenolic resin, urethane rubber and neoprene rubber, a combination of phenolic resin, urethane rubber and butyl rubber, optionally a 3M tape.
  • the present application provides a use of the wearable garment sensor according to the first aspect in intelligent outdoor sportswear.
  • the intelligent outdoor sportswear described in the present application refer to clothes that can monitor motion signals or physiological signals in real time, and the clothes also have waterproofness and air permeability and heat preservation.
  • the garment sensor provided by the present application has good air permeability compared to the conventional sensor which generally adopts a distributed arrangement means to maintain the air permeability of the fabric when applied to the fabric garment.
  • the garment sensor provided by the present application has sensing, waterproofness, air permeability and heat control properties, so that objects such as sports clothes or health monitoring fabrics made of the fabric have a large application space even in an outdoor environment.
  • ionic liquid is supported on pore walls of the dielectric layer, which not only does not block the through holes and affect the air permeability of the material, but also greatly improves the sensitivity of the sensor to improve the accuracy of signal monitoring;
  • the garment sensor provided by the present application has sensing, waterproofness, air permeability and heat control properties, and can not only monitor the movement of human fingers, elbow flexion, leg flexion, walk and run in real time, but also detect the weak physiological signals of human body, such as pulse, heartbeat, and breath;
  • the preparation method provided by the present application has a simple process, low raw material cost, and is convenient for large-scale industrial production and can promote the development of intelligent clothing.
  • Fig. 1 is a schematic structural view of the wearable garment sensor provided by the present application.
  • Fig. 2 is a scanning electron micrograph of the wearable garment sensor provided in Example 1 of the present application.
  • Fig. 3 is a diagram showing finger flexion monitored by the wearable garment sensor provided in example 1 of the present application.
  • Fig. 4 is a diagram showing elbow flexion monitored by the wearable garment sensor provided in example 1 of the present application.
  • Fig. 5 is diagram showing leg flexion monitored by the wearable garment sensor provided in example 1 of the present application.
  • Fig. 6 is a diagram showing walk and run monitored by the wearable garment sensor provided in example 1 of the present application.
  • Fig. 7 is a diagram showing the breath and heartbeat monitored by the wearable garment sensor provided in example 1 of the present application.
  • a wearable garment sensor as shown in Fig. 1 comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a silica hydrophobic layer
  • the fabric layer is a cotton fabric layer
  • the dielectric layer is a porous cellulose acetate film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are silver film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the other side of the fabric layer obtained in step 2) was coated with a porous silver electrode layer with a thickness of 100 nm by spray gun spraying method to obtain a fabric-first electrode layer;
  • a porous cellulose acetate film with a pore size of 5 ⁇ m and a thickness of 200 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by sucking filtration, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous cellulose acetate film was 1: 5; then a porous metal silver electrode layer with a thickness of 100 nm was coated on one side by a spray gun spraying method to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by a 3M tape to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a hydrophobic layer of polytetrafluoroethylene
  • the fabric layer is a polyester fabric layer
  • the dielectric layer is a porous nitrocellulose film layer having a porous structure with 1-ethyl-3-methylimidazolium tetrafluoroborate loaded on pore walls
  • the electrode layers are carbon nanotube film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the other side of the fabric layer obtained in step 2) was coated with a porous carbon nanotube electrode layer with a thickness of 500 nm by a glass rod scraping method to obtain a fabric-first electrode layer;
  • a porous nitrocellulose film with a pore size of 2 ⁇ m and a thickness of 300 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium tetrafluoroborate on pore walls thereof by immersion, wherein the mass ratio of 1-ethyl-3-methylimidazolium tetrafluoroborate to the porous nitrocellulose film was 1: 4; then a porous carbon nanotube electrode layer with a thickness of 500 nm was coated on one surface thereof by a glass rod scraping method to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by a transparent tape to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a ceramic hydrophobic layer
  • the fabric layer is an acrylic fabric layer
  • the dielectric layer is a porous polyurethane film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are graphene film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the acrylic fabric, and natural dried at room temperature for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was coated with a porous graphene electrode layer with a thickness of 400 nm by a glass rod scraping method to obtain a fabric-first electrode layer;
  • a porous polyurethane film with a pore size of 10 ⁇ m and a thickness of 100 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by drop coating, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous polyurethane film was 1: 3; then a porous graphene electrode layer with a thickness of 400 nm was coated on one surface by a glass rod scraping method to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by phenolic resin to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a polyethylene hydrophobic layer
  • the fabric layer is a nylon fabric layer
  • the dielectric layer is a porous polyimide film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are copper film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the nylon fabric, and natural dried at room temperature for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was spray coated with a porous copper electrode layer with a thickness of 80 nm by a spray gun coating method to obtain a fabric-first electrode layer;
  • a porous polyimide film with a pore size of 20 ⁇ m and a thickness of 200 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by immersion, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous polyimide film was 1: 5; then a porous copper electrode layer with a thickness of 80 nm was spin coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by a double-sided tape to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a paraffin hydrophobic layer
  • the fabric layer is an aramid fabric layer
  • the dielectric layer is a porous polylactic acid film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are aluminium film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the aramid fabric, and dried at 40°C for 6 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was spray coated with a porous aluminium electrode layer with a thickness of 80 nm by a spray gun coating method to obtain a fabric-first electrode layer;
  • a porous polylactic acid film with a pore size of 0.5 ⁇ m and a thickness of 100 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by sucking filtration, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous polylactic acid film was 1: 5; then a porous aluminium electrode layer with a thickness of 50 nm was spray coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by chloroprene rubber to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a silica hydrophobic layer
  • the fabric layer is a hemp fabric layer
  • the dielectric layer is a porous polystyrene film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are polypyrrole film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the hemp fabric, and dried at 50°C for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was coated with a porous polypyrrole electrode layer with a thickness of 200 nm by a spin coating method to obtain a fabric-first electrode layer;
  • a porous polystyrene film with a pore size of 1 ⁇ m and a thickness of 200 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by sucking filtration, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous polystyrene film was 1: 3; then a porous polypyrrole electrode layer with a thickness of 200 nm was spin coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by unsaturated polyester resin to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a paraffin hydrophobic layer
  • the fabric layer is a silk fabric layer
  • the dielectric layer is a porous nitrocellulose film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are polythiophene film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the silk fabric, and dried at room temperature for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was coated with a porous polythiophene electrode layer with a thickness of 500 nm by a spin coating method to obtain a fabric-first electrode layer;
  • a porous nitrocellulose film with a pore size of 20 ⁇ m and a thickness of 300 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls thereof by immersion, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous nitrocellulose film was 1: 5; then a porous polythiophene electrode layer with a thickness of 500 nm was spin coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by butyl rubber to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a ceramic hydrophobic layer
  • the fabric layer is a wool fabric layer
  • the dielectric layer is a porous cellulose film layer having a porous structure with 1,3-dimethylimidazolium methylsulfate loaded on pore walls
  • the electrode layers are silver film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the wool fabric, and dried at room temperature for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was spray coated with a porous silver electrode layer with a thickness of 80 nm by a spray gun coating method to obtain a fabric-first electrode layer;
  • a porous cellulose film with a pore size of 0.5 ⁇ m and a thickness of 0.1 mm was selected to support a layer of 1, 3-dimethylimidazolium methylsulfate on pore walls thereof by sucking filtration, wherein the mass ratio of 1, 3-dimethylimidazolium methylsulfate to the porous cellulose film was 1: 1; then a porous silver electrode layer with a thickness of 50 nm was spray coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by a transparent tape to obtain the wearable garment sensor.
  • a wearable garment sensor comprises a hydrophobic layer, a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • the hydrophobic layer is a silica hydrophobic layer
  • the fabric layer is a cotton fabric layer
  • the dielectric layer is a porous polylactic acid film layer having a porous structure with 1-ethyl-3-methylimidazolium hexafluorophosphate loaded on pore walls
  • the electrode layers are silver film layers having a reticular porous structure.
  • the preparation method thereof is as follows:
  • step 2) the casting solution obtained by step 1) was coated on the upper surface of the cotton fabric, and dried at room temperature for 4 h to obtain a hydrophobic-fabric layer;
  • step 2) the other side of the fabric layer obtained in step 2) was spray coated with a porous silver electrode layer with a thickness of 100 nm by a spray gun coating method to obtain a fabric-first electrode layer;
  • a porous cellulose film with a pore size of 100 ⁇ m and a thickness of 1 ⁇ m was selected to support a layer of 1-ethyl-3-methylimidazolium hexafluorophosphate on pore walls by sucking filtration, wherein the mass ratio of 1-ethyl-3-methylimidazolium hexafluorophosphate to the porous cellulose film was 1: 10; then a porous silver electrode layer with a thickness of 100 nm was spray coated on one surface thereof to obtain a dielectric-second electrode layer;
  • the fabric-first electrode layer was attached and fixed to the dielectric-second electrode layer, and the periphery thereof was bonded by a transparent tape to obtain the wearable garment sensor.
  • example 1 The only difference from example 1 is that the porous cellulose acetate film was replaced by dense cellulose acetate film in the present comparative example.
  • example 1 The only difference from example 1 is that the silver film with a reticular porous structure was replaced by a dense metallic silver film in the present comparative example.
  • Morphology characterization a morphology analysis was performed using a scanning electron microscopy
  • Fig. 2 is a scanning electron micrograph of the wearable garment sensor provided in Example 1 of the present application. It can be seen from the figure that the garment sensor comprises a fabric layer, a first electrode layer, a dielectric layer and a second electrode layer successively from bottom to top.
  • Fig. 3 is a diagram of finger flexion monitored by the wearable garment sensor provided in example 1;
  • Fig. 4 is a diagram showing elbow flexion monitored by the wearable garment sensor provided in Example 1;
  • Fig. 5 is a diagram showing leg flexion monitored by the wearable garment sensor provided in example 1;
  • Fig. 6 is a diagram showing walk and run monitored by the wearable garment sensor provided in example 1;
  • Fig. 7 is a diagram showing the breath and heartbeat monitored by the wearable garment sensor provided in example 1.
  • the wearable garment sensor of present application can monitor multiple movements with high sensitivity.
  • Air permeability test the sample was covered on an open glass bottle (adesiccant was placed in the glass bottle) , and the increase in the mass of the desiccant per unit area per unit time was calculated to evaluate the air permeability.
  • Heat preservation function test Heat preservation was evaluated by hot stage test, in which the fabric was placed on a hot stage with a certain temperature and the temperature difference between the upper surface of the fabric and the surface of the hot stage was tested.
  • the garment sensor provided by the present application has sensing property, waterproofness, air permeability and heat control properties, which can not only monitor the movement of human fingers, elbow flexion, leg flexion, walk and run in real time, but also detect the weak physiological signals of human body, such as pulse, heartbeat, and breath.
  • the present application can not only improve the sensitivity of the sensor but also make the sensor have good air permeability by using a dielectric film layer having a porous structure and loading ionic substance on pore walls, both of which are indispensable.
  • the present application can increase the air permeability of the sensor by selecting an electrode film having a reticular porous structure.
  • the present application describes the wearable garment sensor and preparation method and application thereof by the above embodiments, but the present application is not limited to the above process steps, that is, it does not mean that the present application must rely on the above process steps to be implemented.

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Abstract

L'invention concerne un capteur de vêtement pouvant être porté et son procédé de préparation et son application. Le capteur de vêtement comprend une couche de tissu, une première couche d'électrode, une couche diélectrique et une seconde couche d'électrode successivement de bas en haut ; la couche diélectrique a une structure poreuse et un liquide ionique est chargé sur les parois de pore de la couche diélectrique.
PCT/CN2019/074929 2018-11-22 2019-02-13 Capteur de vêtement pouvant être porté, procédé de préparation et application associés WO2020103343A1 (fr)

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