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Carbon nanotube epoxy resin composite material strain sensor and its manufacturing process

A strain sensor, epoxy resin technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problem of weak resistance change and achieve the effect of sensitivity advantage

Active Publication Date: 2018-11-30
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0003] The resistance of the traditional resistive strain gauge will also change after receiving the tensile strain, but the ratio of the change rate of the resistance ratio (resistance change / initial resistance) to the strain is 2, that is, the sensitivity is 2, and the resistance change is quite weak, so it needs A digital bridge with high precision measures its resistance change

Method used

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  • Carbon nanotube epoxy resin composite material strain sensor and its manufacturing process
  • Carbon nanotube epoxy resin composite material strain sensor and its manufacturing process
  • Carbon nanotube epoxy resin composite material strain sensor and its manufacturing process

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Embodiment Construction

[0026] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0027] Such as Figure 4 A kind of carbon nanotube epoxy resin composite material strain sensor shown, comprises strain body 5, and the conductive copper mesh that is arranged on the two ends of strain body 5; Strain body 5 is made of carbon nanotube / epoxy resin composite material, The carbon nanotube / epoxy resin composite material is mainly composed of epoxy resin agent A, carbon nanotubes and curing agent B agent.

[002...

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Abstract

The invention discloses a strain sensor made of carbon nanotube / epoxy resin composite material. The strain sensor comprises a strain body and conductors arranged at two ends of the strain body, wherein the strain body is made of the carbon nanotube / epoxy resin composite material, and the carbon nanotube / epoxy resin composite material mainly comprises an epoxy resin agent A, carbon nanotubes and a curing agent B. The strain sensor has the advantages that the ratio of the resistance change rate to the strain can reach above 20, the strain can be accurately measured without a digital electric bridge strain gauge extremely high in precision, and the strain sensor is high in sensitivity.

Description

technical field [0001] The invention relates to a carbon nanotube epoxy resin composite material strain sensor and a manufacturing process. Background technique [0002] Strain is a physical quantity that is often used in engineering practice. It is necessary to accurately measure strain in the fields of structural design, material research and development, and aerospace. There are many methods for strain measurement, such as non-contact optical measurement method, which is convenient and easy to operate, and the result display is intuitive, but the strain nephogram is rough and not accurate enough, so it is not suitable for occasions requiring high-precision strain measurement. The traditional method of accurately measuring strain is the electrical measurement method, which can obtain the strain value of a certain point more accurately, and the required components are resistive strain gauges and strain gauges. Strain gauges are generally composed of sensitive grids, base m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K7/24G01B7/16
CPCC08K7/24C08L2203/20G01B7/18C08L63/00
Inventor 黄楷焱童疏影陈泽芸应琴袁卫锋
Owner SOUTHWEAT UNIV OF SCI & TECH
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