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Dot matrix type pressure distribution sensor based on carbon nano tube and preparation method thereof

A carbon nanotube and pressure distribution technology, applied in the fields of instruments, measuring force, medical science, etc., can solve the problems of difficult to comprehensively reflect the fine condition of the occlusal surface, lack of electrical conductivity, uneven dispersion, etc., and meet the requirements of industrialized large-scale production. , The process steps are simple but not complicated, and the effect of the technical effect is guaranteed

Inactive Publication Date: 2012-06-20
江苏畅微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But, because the coating layer material of the pressure sensor described in US4856993 adopts carbon black material, there is the following shortcoming: one, because carbon black material has certain The agglomeration, the uniformity after dispersion and stirring is relatively poor, and the resulting electrical conductivity, that is, the relationship between pressure and resistivity tends to be determined by Figure 4 shows the shape of the exponential decay curve, it is difficult to truly reflect the force of the lower teeth occlusion, and the effect on orthodontics and denture implants Second, although this kind of pressure sensor has good flexibility characteristics, it has a certain influence on such as mechanical strength and stability due to material and polymerization factors. 30 times; third, as mentioned above, due to the agglomeration of carbon black, the dispersion is uneven, and the conductivity of some points is lacking, so that the spatial resolution is not high, so it is difficult to fully reflect the subtle conditions of the occlusal surface

Method used

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  • Dot matrix type pressure distribution sensor based on carbon nano tube and preparation method thereof
  • Dot matrix type pressure distribution sensor based on carbon nano tube and preparation method thereof
  • Dot matrix type pressure distribution sensor based on carbon nano tube and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A) Raw material preparation, select the first and second film substrates 1 and 2, carbon nanotubes, resin and solvent, and reserve them for later use, wherein: the first and second film substrates 1 and 2 are all polyester films, and pre-processed become figure 2 The schematic geometric shape is processed into a shape that tends to match the gums of the human oral cavity. Specifically, the heads of the first and second film substrates 1 and 2 are figure 2 , image 3 The left end of the shown position state is designed to be U-shaped, the first film substrate 1 is formed with a first cavity 11, and the second film substrate 2 is formed with a second cavity 21, and the carbon nanotubes are 10-60nm in diameter. carbon nanotubes, the resin is a phenoxy resin, and the solvent is a ketone or glycol ether organic polymer solvent. In this embodiment, a ketone organic polymer solvent is used such as acetone, methyl ethyl ketone and cyclohexane Any one of ketones, but doe...

Embodiment 2

[0051] Only change the parts by weight of the organic polymer solvent in step B) to 4 parts by weight of ethylene glycol methyl ether, change the parts by weight of carbon nanotubes to 0.2; change the width of each electrode in step C) to 0.7mm, change the distance between adjacent electrode lines to 0.4mm; change the thickness of the silver paste in step D) to 0.1mm, and the rest are the same as the description of embodiment 1.

Embodiment 3

[0053] Only change the parts by weight of the organic polymer solvent in step B) to 2.2 parts by weight of cyclohexanone, change the parts by weight of carbon nanotubes to 0.083; change the width of each electrode in step C) to 0.9 mm , change the spacing distance between adjacent electrode lines to 0.6mm; change the thickness of the silver paste in step D) to 0.075mm, and the rest are the same as the description of Example 1 .

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Abstract

The invention provides a dot matrix type pressure distribution sensor based on a carbon nano tube and a preparation method thereof, which belongs to the technical field of sensing devices for dental clinical examination. The dot matrix type pressure distribution sensor comprises a first film substrate, a second film substrate, a group of first electrodes, a group of second electrodes, a first insulating layer and a second insulating layer, wherein the first and the second insulating layers are positioned between the first and the second film substrates; the first and the second film substrates are both polyester films; and the first electrodes, the second electrodes, first connecting wires, second connecting wires, first electrode terminals and second electrode terminals are all made of silver. The dot matrix type pressure distribution sensor has the advantages that the recoverability and the elasticity are outstanding, the occlusive service life reaches more than 300 times; the excellent clinical effects on tooth correction, false tooth implantation and health care are guaranteed; each imperceptible point on an end surface is guaranteed to be measured in the occlusal contact process of the upper and the lower teeth; and the processing steps are simple and not redundant, so not only can comprehensive reflection of the technical effects of the pressure distribution sensor be guaranteed, but the requirement of industrialized mass production can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of sensing devices for dental clinical testing, and in particular relates to a carbon nanotube-based dot matrix pressure distribution sensor used for measuring tooth occlusal force, and also relates to a preparation method of the pressure distribution sensor. Background technique [0002] In clinical dentistry (also known as dentistry), including orthodontics, denture implants, and health care, it is necessary to diagnose each point on the contact surface between the upper and lower teeth of the tooth. The traditional diagnosis method is time-consuming, material-intensive and expensive. , but also increased pain to the patient. Tekscan Corporation of the United States proposed a flexible pressure sensor for measuring tooth engagement in 1989 (patent number: US4856993). The pressure sensor is composed of a film and a coating layer coated on the film. The coating layer is bonded by a polymer. Agent, semi-cond...

Claims

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Application Information

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IPC IPC(8): G01L1/20A61C19/05
Inventor 王慰
Owner 江苏畅微电子科技有限公司
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