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Sensitive material for flexible temperature sensor

A technology of temperature sensor and sensitive material, applied in the direction of thermometers, thermometers, instruments, etc. which use electrical/magnetic components directly sensitive to heat, it can solve the problem that the temperature sensing function and flexibility cannot be combined, and the tactile sensor array cannot be applied. Array structure requirements are high, to achieve good temperature-sensitive characteristics, improve flexibility, and ensure the effect of flexibility

Inactive Publication Date: 2011-10-05
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 temperature 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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  • Sensitive material for flexible temperature sensor
  • Sensitive material for flexible temperature sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The composite system of conductive carbon fiber, nano-carbon fiber and liquid silicone is formulated according to the following weight ratio:

[0033] One-component liquid silicone rubber RTV GD401: 100 parts;

[0034] Conductive carbon fiber: 8 parts;

[0035] Carbon nanofiber: 2 parts;

[0036] Dispersant: 10 parts.

[0037] The conductive carbon fiber is ECP-CF with an average length of 0.2mm, an average diameter of 11-15μm, and a resistivity of 4-7×10 -3 Ω·cm.

[0038] The carbon nanofiber is TNCF with an average length of 5-50 μm, an average diameter of 200-400 nm, and a resistivity of 0.1×10 -3 Ω·cm.

[0039] The dispersant is distilled naphtha, density 650-750kg / m 3 .

[0040] making process:

[0041] Under normal temperature and normal pressure, 8 parts of conductive carbon fiber ECP-CF, 2 parts of nano-carbon fiber TNCF and 10 parts of dispersant were dispersed by FS-150 ultrasonic processor for 30-40 minutes to obtain suspension A; Add to 100 parts of...

Embodiment 2

[0044] The composite system of conductive carbon fiber, nano-carbon fiber and liquid silicone is formulated according to the following weight ratio:

[0045] Two-component polydimethylsiloxane PDMS DC-184: 100 parts, including 90 parts of agent A and 10 parts of agent B;

[0046] Conductive carbon fiber: 10 parts;

[0047] Carbon nanofiber: 4 parts;

[0048] Dispersant: 10 parts.

[0049] The conductive carbon fiber is ECP-CF with an average length of 0.2mm, an average diameter of 11-15μm, and a resistivity of 4-7×10 -3 Ω·cm.

[0050] The carbon nanofiber is TNCF with an average length of 5-50 μm, an average diameter of 200-400 nm, and a resistivity of 0.1×10 -3 Ω·cm.

[0051] The dispersant is distilled naphtha, density 650-750kg / m 3 .

[0052] making process:

[0053]At normal temperature and pressure, 10 parts of conductive carbon fiber ECP-CF, 4 parts of nano-carbon fiber TNCF and 10 parts of dispersant were dispersed by FS-150 ultrasonic processor for 30-40 minute...

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Abstract

A sensitive material for a flexible temperature sensor. The sensitive material is a composite material with a liquid organosilicon solidified at room temperature as a matrix, and comprises ingredients of, by weight, 100 parts of liquid organosilicon, 8-15 parts of conductive carbon fiber, 1-5 parts of carbon fiber and 8-10 parts of dispersant. Ingredients with a proportioning amount are mixed, dispersed uniformly by ultrasound, injected into a temperature sensor structural model, and solidified at room temperature to obtain the sensitive material. The material has good flexibility and temperature sensitive characteristic, and is suitable for a temperature sensor of any design.

Description

1. Technical field [0001] The invention relates to a temperature sensor material, in particular to a sensitive material for a flexible temperature sensor. 2. Background technology [0002] At present, the sensitive materials used for temperature sensors are mainly metals, metal oxides or semiconductor materials, etc., and these types of materials are not flexible. Over the years, people have been trying to use different principles and different materials to develop flexible tactile sensors. For example, L.-C.Tsao of National Taiwan University used graphite and polydimethylsiloxane to blend to obtain conductive composite materials, and used the characteristics of resistance temperature effect of this material as a sensitive material for flexible temperature sensing; Ding Yongsheng of Donghua University et al. used conductive fibers as conductive weft yarns and conductive warp yarns, and used the interweaved woven structure as a temperature sensitive element to detect changes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K7/06C08K3/04G01K7/22
Inventor 黄英赵兴仇怀利张玉刚刘彩霞廉超陆伟
Owner HEFEI UNIV OF TECH
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