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Composite pressure sensor and preparation method thereof

A technology of pressure sensor and white carbon black, which is applied in the field of composite pressure sensor and its preparation, can solve the problems that need to be improved, and achieve the effects of excellent structure control effect, low price, energy saving and environmental protection in the process

Inactive Publication Date: 2013-06-05
WUHAN UNIV
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Problems solved by technology

The flexibility of the current composite pressure sensor needs to be improved

Method used

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  • Composite pressure sensor and preparation method thereof

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Embodiment Construction

[0020] The present invention will be further described below in combination with specific embodiments.

[0021] In the following specific embodiments, the one-component RTV silicone rubber is the D09 type silicone rubber of Jiahang Rubber Industry; the white carbon black is nano-scale silica with a particle size of 1200 mesh; The conductive carbon black of 40B2 has a particle size of 23nm. The mass ratio of one-component RTV silicone rubber, white carbon black and conductive carbon black is 3.8: (0.8-1): (5-6).

[0022] The specific preparation process of the composite pressure sensor of the present invention is as follows:

[0023] (1) Use an electronic balance to weigh one-component room temperature vulcanized silicone rubber, white carbon black, conductive carbon black and acetone in proportion, put the acetone into a beaker, and put the weighed one-component room temperature vulcanized silicone rubber, white carbon Black and conductive carbon black were added to acetone ...

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Abstract

The invention provides a composite pressure sensor and a preparation method thereof. The composite pressure sensor comprises the following components: single-component room temperature vulcanized silicon rubber, white carbon black and graphitized carbon black, wherein the mass ratio of the single-component room temperature vulcanized silicon rubber, the white carbon black and the graphitized carbon black is 3.8:(0.8-1):(5-6). The composite pressure sensor is prepared in a thermal stirring manner by using cosolvent acetone. The composite pressure sensor provided by the invention has excellent pressure sensitivity and flexibility, and can be used in multiple fields such as machinery, electronics and the like.

Description

technical field [0001] The invention belongs to the field of flexible pressure sensors, in particular to a composite pressure sensor and a preparation method thereof. Background technique [0002] In recent years, the demand for flexible pressure sensors for mechanical devices has been increasing. Piezoelectric ceramics are difficult to meet the requirements due to their brittleness. Therefore, there is an urgent need for a flexible pressure sensor with excellent stretchability, toughness and piezoresistive properties. Existing flexible pressure sensors are generally composite pressure sensors, which are composed of matrix materials and conductive fillers. The commonly used matrix material is silicone rubber, which is a special synthetic rubber with excellent heat and cold resistance and electrical properties; commonly used conductive fillers There are two types of carbon and metal. The flexibility of the current composite pressure sensor needs to be improved. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K3/36C08K3/04C08J5/18
Inventor 农斌郑斌曾怡汪超琼孙源郭闽年王倩王旭飞
Owner WUHAN UNIV
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