Flexible electronic skin with air permeability, moisture permeability and heat regulation performance and preparation method thereof

Abstract

The invention discloses flexible electronic skin with air permeability, moisture permeability and heat regulation performance and a preparation method thereof, and belongs to the technical field of flexible sensors. The flexible electronic skin is prepared from a nano-fiber membrane and a conductive coating which does not completely cover the surface of the nano-fiber membrane, wherein the conductive coating is loaded on the surface of the nano-fiber membrane in a closed linear or / and unclosed linear form; and the nano-fiber membrane is an elastic polyolefin copolymer nano-fiber membrane witha porous structure. On the basis of guaranteeing the excellent tension / pressure sensing performance of the designed electronic skin, the prepared electronic skin has high flexibility, air permeability, moisture permeability and heat regulation performance through the unique three-dimensional porous structure, elasticity and infrared transmission performance as well as the design way of incompletecoverage of the conductive coating.

Description

technical field

[0001] The invention relates to a flexible electronic skin, which belongs to the technical field of flexible sensors, in particular to a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties and a preparation method thereof. Background technique

[0002] In recent years, with the rapid development of science and technology, electronic science and technology and the integration of medical fields have produced a new type of sensor that is expected to replace human skin - electronic skin. From a scientific point of view, electronic skin is a new type of wearable sensor. Bionic tactile sensor, which is an artificial flexible electronic device that can realize the function of human tactile perception.

[0003] Most of the existing flexible electronic skin substrates use PDMS films. For example, the Chinese invention patent application (application publication number: CN108078543A, application publication date: 2018-05-29) d...

Examples

Embodiment 1

[0056] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0057] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 35 μm.

[0058] Use physical coating to coat or coat the conductive silver paste material with conductive properties on the surface of the nanofiber membrane prepared above according to the designed serpentine shape, and dry it to obtain a conductive coating with a thickness of 40 μm, that is, finally obtain a gas-permeable coating. , moisture permeability and heat regu...

Embodiment 2

[0060] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0061] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 60 μm.

[0062] Using physical coating, the silver nanowire material with conductive properties is coated or wrapped on the surface of the nanofiber membrane prepared above according to the designed ring, and dried to obtain a conductive coating with a thickness of 45 μm, that is, finally obtain a gas-permeable, Flexible electronic skin with moisture permeability and th...

Embodiment 3

[0064] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0065] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 80 μm.

[0066] Use physical coating to coat or wrap the copper nanowire material with conductive properties on the surface of the nanofiber membrane prepared above according to the designed curve, and dry it to obtain a conductive coating with a thickness of 60 μm, that is, finally obtain a gas-permeable coating. , moisture permeability and heat regulation performance ...

technical field

[0001] The invention relates to a flexible electronic skin, which belongs to the technical field of flexible sensors, in particular to a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties and a preparation method thereof. Background technique

[0002] In recent years, with the rapid development of science and technology, electronic science and technology and the integration of medical fields have produced a new type of sensor that is expected to replace human skin - electronic skin. From a scientific point of view, electronic skin is a new type of wearable sensor. Bionic tactile sensor, which is an artificial flexible electronic device that can realize the function of human tactile perception.

[0003] Most of the existing flexible electronic skin substrates use PDMS films. For example, the Chinese invention patent application (application publication number: CN108078543A, application publication date: 2018-05-29) d...

Examples

Embodiment 1

[0056] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0057] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 35 μm.

[0058] Use physical coating to coat or coat the conductive silver paste material with conductive properties on the surface of the nanofiber membrane prepared above according to the designed serpentine shape, and dry it to obtain a conductive coating with a thickness of 40 μm, that is, finally obtain a gas-permeable coating. , moisture permeability and heat regu...

Embodiment 2

[0060] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0061] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 60 μm.

[0062] Using physical coating, the silver nanowire material with conductive properties is coated or wrapped on the surface of the nanofiber membrane prepared above according to the designed ring, and dried to obtain a conductive coating with a thickness of 45 μm, that is, finally obtain a gas-permeable, Flexible electronic skin with moisture permeability and th...

Embodiment 3

[0064] This embodiment discloses a method for preparing a flexible electronic skin with air-permeable, moisture-permeable and heat-regulating properties. The specific preparation process is as follows:

[0065] Weigh 3 to 5 g of elastic polyolefin thermoplastic elastomer nanofibers, and disperse them in 800 to 1000 mL of organic solvent ether by ultra-high-speed shearing to obtain a suspension of elastic nanofibers, and then use high-pressure airflow forming technology to take 40 to 80mL of the elastic nanofiber suspension was sprayed to prepare an elastic polyolefin copolymer nanofiber film with a thickness of 80 μm.

[0066] Use physical coating to coat or wrap the copper nanowire material with conductive properties on the surface of the nanofiber membrane prepared above according to the designed curve, and dry it to obtain a conductive coating with a thickness of 60 μm, that is, finally obtain a gas-permeable coating. , moisture permeability and heat regulation performance ...

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