Sensitive element based on pressure volume effect of graphene filled silicone rubber composite material and production method thereof

A technology of sensitive components and composite materials, applied in the field of sensors, can solve the problems of complex surface shape and small gap between layers, and achieve the effect of thin thickness, low cost and high precision

Inactive Publication Date: 2013-03-27
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in engineering practice, many devices have small gaps between layers and complex surface shapes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The development method of the sensitive element based on the pressure capacity effect of graphene-filled silicon rubber composite material proposed by the present invention comprises the following steps: on the polyimide film, the copper foil electrode and the lead wire are laminated, the thickness of the single-layer polyimide film is The thickness of the electrode is 12.5 μm, and the thickness of the electrode is 10 μm; the mass ratio of graphene and room temperature vulcanized silicone rubber is 0.06:1-0.08:1. This concentration range is determined through a large number of experiments. In the calibrated pressure-capacity characteristics, and has good flexibility; the organic solvent is added to the graphene and room temperature vulcanization silicone rubber mixture, the volume ratio is 100:1; for graphene / room temperature vulcanization silicone rubber / organic solvent mixed solution Perform high-power mechanical stirring, supplemented by ultrasonic vibration at th...

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Abstract

The invention provides a sensitive element based on pressure volume effect of a graphene filled silicone rubber composite material and a production method thereof and belongs to the technical field of sensing technology. The sensitive element comprises packaging films at the two outermost layers and a soft pressure volume material provided with the pressure volume effect and located in the middle. The packaging films are polyimide films combined with electrodes and leads, and the soft pressure volume material is the graphene filled silicone rubber composite material prepared by using a solution mixing method. The sensitive element is good in flexibility, thin in thickness, simple in process, low in cost and capable of being applied to fields of robot finger touch, large device narrow curved surface interlayer pressure monitoring and the like.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to the preparation and packaging process of sensitive materials of flexible pressure sensors. Background technique [0002] In order to ensure the safe operation of major equipment in the fields of aerospace, national defense and military, and obtain system status information in a timely manner, it is necessary to monitor the interlayer pressure in real time. However, in engineering practice, many devices have small gaps between layers and complex surface shapes. Therefore, a thin flexible sensor capable of monitoring the interlayer pressure is urgently needed. Conductive polymer composite material is a new type of functional material. It not only has flexibility, but also its capacitance changes regularly with pressure. Therefore, this composite material can be used as a sensitive material for flexible pressure sensors. At present, many scientific research institutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/14
Inventor 王璐珩黄艳南吴常军
Owner NORTHEASTERN UNIV
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