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Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof

A tactile sensor and sensitive material technology, applied in the direction of instruments, measuring force, measuring devices, etc., can solve the problems that materials cannot have both tactile sensing function and flexibility, cannot be applied to tactile sensor arrays, and have high requirements on array structure, and achieve good Pressure-sensitive properties, improved tactile sensing capabilities, cost-reduction effects

Inactive Publication Date: 2008-09-10
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. In terms of material selection, the material itself cannot have good tactile sensing function and flexibility, and the cost is high;
[0005] 2. In terms of the layout of the sensor array structure, due to the limitation of the selected materials, the requirements for the array structure are high. It is mainly suitable for rigid and combined array structures, and cannot be applied to any designed tactile sensor array, and the scope of application is small;
[0006] 3. In terms of manufacturing technology, the existing research on flexible tactile sensors mainly uses MEMS technology and layered installation technology, etc., which require high manufacturing technology and high cost

Method used

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  • Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof
  • Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof
  • Pressure sensitive material used for flexible touch sensation sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add nano-SiO with carbon black and silicone rubber compound system 2 , According to the following proportions by weight:

[0036] One-component room temperature curing liquid silicone rubber RTV GD401: 100 parts;

[0037] Conductive carbon black ECP-CB-1 with an average particle size of 30-40nm and a resistivity of 0.2-0.6Ω·cm: 6 parts;

[0038] Nano SiO with a particle size of 15-20nm 2 : 2 copies;

[0039] Density 650~750kg / m 3 , Distilled naphtha as a dispersant: 8 parts.

[0040] making process:

[0041] Under normal temperature and pressure, the conductive carbon black ECP-CB-1 and the dispersant are ultrasonically dispersed with the FS-150 ultrasonic processor for 30-40 minutes to obtain a mixed solution A; the nano-SiO 2 The powder is added to mixed solution A, and after ultrasonic dispersion for 30-40 minutes, mixed solution B is obtained; mixed solution B is added to liquid silicone rubber, and mixed solution C is obtained by ultrasonic dispersion for 20-30 minutes...

Embodiment 2

[0044] Add nano-SiO with carbon black and silicone rubber compound system 2 , According to the following proportions by weight:

[0045] One-component room temperature curing liquid silicone rubber RTV GD401: 100 parts,

[0046] Conductive carbon black ECP-CB-1 with an average particle size of 30-40nm and a resistivity of 0.2-0.6Ω·cm: 8 parts

[0047] Nano SiO with a particle size of 15-20nm 2 :3 copies

[0048] Density 650~750kg / m 3 , Distilled naphtha as a dispersant: 8.5 parts.

[0049] The preparation process is the same as in Example 1. The pressure sensitive characteristic test of the obtained pressure sensitive material is carried out, and the test results are as follows: figure 1 Example 2 characteristic curve shown.

Embodiment 3

[0051] Add nano-SiO with carbon black and silicone rubber compound system 2 , The material components are proportioned according to the following parts by weight:

[0052] One-component room temperature curing liquid silicone rubber RTV GD401: 100 parts;

[0053] Conductive carbon black ECP-CB-1 with an average particle size of 30-40nm and a resistivity of 0.2-0.6Ω·cm: 9 parts

[0054] Nano SiO with a particle size of 15-20nm 2 :4 parts

[0055] Density 650~750kg / m 3, Distilled naphtha as a dispersant: 9 parts.

[0056] The preparation process is the same as in Example 1. The pressure sensitive characteristic test of the obtained pressure sensitive material is carried out, and the test results are as follows: figure 1 Example 3 characteristic curve shown.

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Abstract

A pressure sensitive material used in a flexible touch sensor and a preparation method thereof are characterized in that: the material adopts carbon black, a silicon rubber composite system and added nano SiO2 or nano Al2O3 as raw materials; according to the preparation method, all raw materials are mixed in turn under normal temperature and normal pressure to obtain mixed solution which is injected into a touch sensor structural model, thereby curing forming is completed at room temperature. The pressure sensitive material, which has excellent touch sensing function and flexility, is suitable to be used in a touch sensor array structure designed at will; moreover, the preparation method has a simple process.

Description

Technical field [0001] The invention relates to a pressure-sensitive material for a flexible tactile sensor that can be solution-formed and a preparation method thereof. Background technique [0002] For many years, people have been trying to use different principles and different materials to develop flexible tactile sensors. For example, Yoji Yamada of Japan embedded flexible optical fibers in silicone rubber materials, and used the principle that the pressure generated by the deformation of silicone rubber acts on the sensor unit to study flexible tactile sensors; Tokyo University TLO Co., Ltd. uses transparent elastomer materials and sets in the elastic Multiple colored sign groups in the body constitute an optical flexible tactile sensor; the National Academy of Technology of Korea uses fiber grating sensing system and tactile sensor technology to study flexible tactile sensors with array distribution structure; Chongqing University uses the principle of piezoelectric effect...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K3/04C08K3/36C08K3/22C08K5/01C08J3/205G01L1/00
Inventor 黄英王敏仇怀利付秀兰向蓓张玉刚
Owner HEFEI UNIV OF TECH
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