Sensitive material used in pressure sensor and preparation method thereof

A pressure sensor and sensitive material technology, applied in the field of nano-sensitive materials, can solve problems such as poor stability, low sensitivity, and inability to make thin materials, and achieve the effect of cheap raw materials, simple process, and convenient operation

Active Publication Date: 2017-05-03
SUZHOU LEANSTAR ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to overcome the defects of poor stability, low sensitivity, high minimum detection limit and the inability to make thinner materials used for pressure sensors

Method used

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  • Sensitive material used in pressure sensor and preparation method thereof
  • Sensitive material used in pressure sensor and preparation method thereof
  • Sensitive material used in pressure sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The invention provides a sensitive material used in a pressure sensor. The sensitive material is prepared by mixing a carbon material and a volatile solvent in a certain proportion, ultrasonicating, adding a flexible polymer, stirring, and then heating and curing; the carbon The mass ratio of the material to the volatile solvent is 1:1, and the mass ratio of the added flexible polymer to the carbon material is 1:0.5; the prepared sensitive material has a three-dimensional porous structure. Wherein, the flexible polymer is polydimethylsiloxane.

[0035] See figure 1 , figure 1 When the mass ratio between carbon material, volatile solvent and polydimethylsiloxane in the embodiment of the present invention is 1:1:2, the SEM image of the prepared sensitive material with three-dimensional porous structure .

[0036] The carbon material is reduced graphene oxide, and the volatile solvent is ethanol, by figure 1 It can be seen that the size of the pores of the sensitive ma...

Embodiment 2

[0051] The invention provides a sensitive material used in a pressure sensor. The sensitive material is prepared by mixing a carbon material and a volatile solvent in a certain proportion, ultrasonicating, adding a flexible polymer, stirring, and then heating and curing; the carbon The mass ratio of the material to the volatile solvent is 1:2, and the mass ratio of the added flexible polymer to the carbon material is 1:2; the prepared sensitive material has a three-dimensional porous structure. Wherein, the flexible polymer is polydimethylsiloxane.

[0052] See figure 2 , figure 2 It is an SEM image of a sensitive material with a three-dimensional pore structure prepared when the mass ratio of the carbon material, the volatile solvent and the flexible polymer in the embodiment of the present invention is 2:4:1.

[0053] The carbon material is reduced graphene oxide, and the volatile solvent is ethanol, by figure 2 It can be seen that the size of the pores of the sensitiv...

Embodiment 3

[0068] The invention provides a sensitive material used in a pressure sensor. The sensitive material is prepared by mixing a carbon material and a volatile solvent in a certain proportion, ultrasonicating, adding a flexible polymer, stirring, and then heating and curing; the carbon The mass ratio of the material to the volatile solvent is 1:3, and the mass ratio of the added flexible polymer to the carbon material is 1:1; the prepared sensitive material has a three-dimensional porous structure. Wherein, the flexible polymer is polydimethylsiloxane.

[0069] See image 3 , image 3 It is an SEM image of a sensitive material with a three-dimensional pore structure prepared when the mass ratio of carbon material, volatile solvent and flexible polymer in the embodiment of the present invention is 1:3:1.

[0070] The carbon material is reduced graphene oxide, the volatile solvent is ethanol, the size of the pores of the sensitive material is 7-13 μm, and the gap between the pores...

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Abstract

The invention discloses a sensitive material used in a pressure sensor. The sensitive material is prepared by mixing and ultrasonically processing a carbon material and a volatile solvent according to a certain proportion, adding a flexible high-molecular polymer, and heating and curing after stirring, wherein the mass ratio of the carbon material to the volatile solvent is 1:1 to 1:50; the mass ratio of the added flexible high-molecular polymer to the carbon material is 1:0.5 to 1:50; and the sensitive material has a three-dimensional porous structure. The invention further discloses a preparation method of the sensitive material used in the pressure sensor. The method disclosed by the invention has the advantages of being cheap in raw materials, simple in process and convenient to operate and is applied to large-scale industrial production; the sensitive material disclosed by the invention is a flexible material with the three-dimensional porous structure, so that gaseous phase and solid phase exist in the material, and therefore, the sensitive material has higher sensitivity.

Description

technical field [0001] The invention relates to a nanometer sensitive material, in particular to a sensitive material used in a pressure sensor and a preparation method thereof. Background technique [0002] In order to be able to keep in line with the technological development trend of the surge in the amount of information in the information age and the increasing ability to capture and process information, the requirements for the accuracy, reliability and sensitivity of pressure sensors are becoming more and more stringent, while the volume of traditional pressure sensors Large, it is difficult to meet the above high-performance requirements, therefore, they are gradually replaced by various types of high-performance miniature sensors. However, sensitive materials are an important part of pressure sensors. At present, the sensitive materials used in pressure sensors are mainly metals, metal oxides, or semiconductor materials. These types of materials have poor flexibilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08K3/04C08K7/24C08G77/06
Inventor 张珽熊作平
Owner SUZHOU LEANSTAR ELECTRONICS TECH
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