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High-performance multifunctional strain sensor material with stable interface as well as preparation method and application of high-performance multifunctional strain sensor material

A strain sensor, high-performance technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, coating, etc., can solve the problems of poor stability, small deformation of crack structure particle layer, poor repeatability of reciprocating deformation, etc.

Pending Publication Date: 2022-05-03
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a stable interface with a high Performance multifunctional strain sensor material, specifically a strain sensor material with good tensile resilience, high tensile deformation sensitivity, wide deformation domain, excellent stability and repeatability, and superhydrophobic function

Method used

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  • High-performance multifunctional strain sensor material with stable interface as well as preparation method and application of high-performance multifunctional strain sensor material
  • High-performance multifunctional strain sensor material with stable interface as well as preparation method and application of high-performance multifunctional strain sensor material
  • High-performance multifunctional strain sensor material with stable interface as well as preparation method and application of high-performance multifunctional strain sensor material

Examples

Experimental program
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Effect test

Embodiment 1

[0064] (1) 100g of hydroxyl-terminated polydimethylsiloxane (107 silicone oil) with a viscosity of 10000mPa·s, 30g of hydroxyl-terminated polydimethylsiloxane (107 silicone oil) with a viscosity of 8000mPa·s, silane-modified silica Put 60g into DLH-5L experimental power mixer in turn and stir, heat at 140°C, vacuumize and dehydrate for 2h; after cooling to room temperature, add 6.5g aminopropyltriethoxysilane, 13g vinyltrimethoxysilane, 1.3g Isopropyl titanate and 55 g of silane-modified silicon dioxide were uniformly stirred and mixed under a vacuum condition of -0.09 MPa to obtain a silicone elastomer raw material and sealed for storage. Add 1g of silicone elastomer raw material to 7ml of organic solvent n-hexane and fully dissolve it by stirring to obtain a silicone elastomer raw material solution; then pour it into a polytetrafluoroethylene mold and leave it at room temperature for 12 hours to obtain a surface with a film thickness of 400 μm Initially cured flexible silico...

Embodiment 2

[0070] (1) Put 100g of hydroxyl-terminated polydimethylsiloxane (107 silicone oil) with a viscosity of 10000mPa·s, 70g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 50000mPa·s, and 30g of silane-modified silica into DLH in sequence -In a 5L experimental power mixer, heat at 140°C, vacuumize and dehydrate for 2 hours; after cooling to room temperature, add 8.5g glycidoxypropyltrimethoxysilane, 23.5g vinyltrimethoxysilane, 0.85g titanic acid Ethyl ester and 55g of silicon dioxide were stirred and mixed uniformly under the vacuum condition of -0.09MPa to obtain the silicone elastomer raw material and sealed for storage. Add 1g of silicone elastomer raw material into 2ml of tetrahydrofuran and fully dissolve it by stirring to obtain a diluted solution of silicone elastomer raw material; then pour it into a polytetrafluoroethylene mold, and leave it at room temperature for 24 hours to obtain a film thickness of 2000μm. flexible silicone elastomer substrate.

[00...

Embodiment 3

[0076] (1) 150g of hydroxyl-terminated polydimethylsiloxane (107 silicone oil) with a viscosity of 30000mPa·s, 10g of hydroxyl-terminated polydimethylsiloxane (107 silicone oil) with a viscosity of 800mPa·s, silane-modified silica Put 120g into the DLH-5L experimental power mixer in turn, heat at 140°C, vacuumize and dehydrate for 2h; after cooling to room temperature, add 15g of aminopropyltriethoxysilane, 15g of phenyltrimethoxysilane, and 1.5g of cycloalkane titanium dioxide and 60 g of silane-modified silicon dioxide were stirred and mixed uniformly under vacuum conditions of -0.09 MPa to obtain a raw material for organosilicon elastomer. Add the organic silicon elastomer raw material into cyclohexane and fully dissolve it by stirring to obtain the organic silicon elastomer raw material solution; the ratio of the organic silicon elastomer raw material to the solvent is as follows: 1g of organic silicon elastomer is added to every 15ml of organic solvent Raw materials; then...

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Abstract

The invention discloses a high-performance multifunctional strain sensor material with a stable interface as well as a preparation method and application thereof. The strain sensor material mainly comprises an organic silicon elastomer serving as a substrate, and a micro-nano-scale rough crack structure is constructed on a polished surface of the organic silicon elastic substrate; and the conductive particles are inserted and assembled on the swollen substrate working surface based on ultrasonic pushing, so that a rough material working surface with coexistence of wrinkles and cracks and densely stacked and assembled conductive particles on the outermost layer is constructed. The surface resistance of the attachment surface of the conductive particles of the sensor material is lt; 104 omega. The material has good external force action, rain wash and high and low temperature complex environment tolerance, the upper surface of the micro-nano-scale coarse structure is super-hydrophobic, and the particle layer is stable after acid-base corrosion, repeated adhesive tape adhesion and pulling and repeated stretching deformation. The resistance of the material shows sensitive response to tensile deformation, and the material can be used as an excellent strain sensor material with good complex environment tolerance.

Description

technical field [0001] The invention belongs to the fields of bionic materials, multifunctional composite materials and strain sensing, and relates to a strain sensor material, in particular to a high-performance multifunctional strain sensor material with stable interface and its preparation method and application. Background technique [0002] Strain sensor is a type of electronic device that converts mechanical deformation into electrical signal output. In the fields of biomedicine, mechatronics, and sports training applications, there is an increasing demand for flexible and stretchable strain sensors due to the need to measure tensile deformation and motion on curved surfaces, etc., such as soft robotics, human motion detection, and blood pressure monitoring. At the same time, its performance is also more demanding. [0003] The layered structure tensile strain sensor prepared by constructing a nano-conductive material layer on the surface of a flexible substrate is an...

Claims

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Application Information

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IPC IPC(8): G01B7/16C08J7/044C08J7/06C08L83/04
CPCG01B7/18C08J7/044C08J7/06C08J2383/04
Inventor 赵丽古亚丽汤龙程张超孔婷婷张国栋龚丽秀沈飞向刘昀
Owner HANGZHOU NORMAL UNIVERSITY
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