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Strain-insensitive flexible stretchable temperature/humidity sensor and preparation method thereof

A humidity sensor and sensitive technology, applied in the field of flexible wearable electronics, can solve problems such as difficulties, difficult preparation process, complex sensor structure, etc., and achieve the effect of simple process, broad application prospect and excellent comprehensive performance

Pending Publication Date: 2020-03-24
XINYU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some researchers have proposed stretchable temperature sensors, the structures of these sensors are relatively complex, the preparation process is difficult, and there are still certain difficulties in practical applications.

Method used

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  • Strain-insensitive flexible stretchable temperature/humidity sensor and preparation method thereof
  • Strain-insensitive flexible stretchable temperature/humidity sensor and preparation method thereof
  • Strain-insensitive flexible stretchable temperature/humidity sensor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] Embodiment 1 Flexible and stretchable temperature sensor

[0041] A flexible and stretchable temperature sensor, the preparation method comprising the following steps:

[0042] 1) Preparation of elastic matrix: First, prepare a silicone rubber solution, weigh 10g of silicone rubber Ecoflex and mix components A and B at a ratio of 1:1, and use a planetary mixer to mix for 5 minutes to obtain a silicone rubber stock solution; then, adjust the gap between the blades of the casting machine Pour the silicone rubber stock solution on the PET substrate, and scrape it with an automatic casting machine to obtain a 1mm thick silicone rubber elastomer; finally, put it in a vacuum drying oven for 10 minutes to obtain a semi-cured silicone rubber elastomer.

[0043] 2) 3D preparation of temperature-sensitive layer: First, prepare a carbon nanotube / silicone rubber solution, as follows: Take 0.6g of carbon nanotubes and add 10g of silicone rubber component A, manually stir for 2 minut...

Embodiment 2

[0046] Embodiment 2 Flexible and Stretchable Humidity Sensor

[0047] A flexible and stretchable humidity sensor, the preparation method comprising the following steps:

[0048] 1) Preparation of elastic matrix: First, prepare a silicone rubber solution, weigh 10g of silicone rubber Ecoflex and mix components A and B at a ratio of 1:1, and use a planetary mixer to mix for 5 minutes to obtain a silicone rubber stock solution; then, adjust the gap between the blades of the casting machine Pour the silicone rubber stock solution on the PET substrate, and scrape it with an automatic casting machine to obtain a 2mm thick silicone rubber elastomer; finally, put it in a vacuum drying oven for 10 minutes to obtain a semi-cured silicone rubber elastomer.

[0049] 2) 3D preparation of humidity-sensitive layer: First, prepare a humidity-sensitive conductive filler / silicone rubber solution, as follows: add 0.5g of carbon nanotube powder and 0.1g of graphene oxide powder to 10g of silicone...

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Abstract

The invention discloses a strain-insensitive flexible stretchable temperature / humidity sensor and a preparation method thereof, and belongs to the technical field of flexible wearable electronics andcomposite materials. The flexible stretchable temperature / humidity sensor is composed of a flexible substrate layer and a temperature / humidity sensitive layer, and the temperature / humidity sensitive layer is semi-embedded into the surface of the flexible substrate layer in a 3D printing mode to form an S-shaped bent structure. Rapid preparation of the flexible substrate layer is achieved through the casting blade coating technology, controllable preparation of the temperature and humidity sensitive layer of the snakelike bent structure is achieved through the 3D printing technology, the influence of external tensile strain on the temperature sensor is effectively eliminated through the snakelike bent structure, and the flexible temperature sensor can be prevented from being affected by external deformation. The obtained flexible temperature / humidity sensor has a good tensile property, the temperature or humidity sensing function is not affected by external strain, and the flexible stretchable temperature / humidity sensor has a wide application prospect in the fields of flexible wearable equipment, human health monitoring and the like.

Description

technical field [0001] The invention belongs to the field of flexible wearable electronics and the technical field of composite materials, and relates to a strain-insensitive flexible and stretchable temperature / humidity sensor and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of smart wearable devices, the demand for flexible wearable devices has become increasingly prominent, and flexible sensors, which are the core of flexible wearable devices, have attracted widespread attention. The flexible temperature / humidity sensor converts the temperature or humidity signal into an electrical signal, which can effectively monitor the physiological information of the human body in real time. At the same time, flexible temperature / humidity sensors are flexible and easy to integrate, making them more and more favored by researchers. [0003] At present, flexible temperature / humidity sensors are mainly based on flexible substra...

Claims

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Application Information

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IPC IPC(8): G01N27/04G01K7/16
CPCG01N27/048G01K7/16
Inventor 贾书海唐振华徐顺建钟德敏
Owner XINYU UNIV
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