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Ultra-thin complaisant conductive macromolecule sensitive film and preparation method thereof

A technology of conductive polymers and sensitive films, applied in the field of force sensors, can solve the problems of no practical application, no quantitative accuracy and resolution, etc., and achieve large range, absolute force-sensing accuracy and resolution, and high force-sensing accuracy and resolution effects

Inactive Publication Date: 2008-05-28
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the literature, only a series of experimental curves are given, without quantitative accuracy, resolution and other indicators, and no practical application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] a. Conductive carbon black powder with an average diameter of less than 1 μm and SiO with a diameter of 10 nm 2 Dispersant powder and liquid one-component silicone rubber are mixed in an acetone organic solvent with a concentration of more than 95%; wherein, the volume concentration ratio of each component is: one-component silicone rubber: conductive carbon black powder: nano-SiO 2 Dispersant powder: acetone organic solvent=100:10:1:300;

[0039] b. Perform mechanical stirring under ultrasonic vibration, the temperature of the stirring environment is 40°C, and the stirring time is 4 hours, to reach a gel state mixture;

[0040] c, then 3% butadiene rubber particles (particle diameter is 10 μm) of the total volume of the mixture are added to the mixture, and mechanical stirring is continued for 20 minutes to volatilize the acetone;

[0041] d. Drop the volatilized mixture into the rotating platform, and spin-coat to form a conductive polymer film with a thickness of 70...

Embodiment 2

[0044] a. Conductive carbon black powder with an average diameter of less than 1 μm and 50nm SiO 2 Dispersant powder and liquid one-component silicone rubber are mixed in an acetone organic solvent with a concentration of more than 95%; wherein, the volume concentration ratio of each component is: one-component silicone rubber: conductive carbon black powder: nano-SiO 2 Dispersant powder: acetone organic solvent=100:15:3:500;

[0045] b. Perform mechanical stirring under ultrasonic vibration, the temperature of the stirring environment is 60°C, and the stirring time is 2 hours, until the mixture is in a gel state;

[0046] C, then 5% butadiene rubber particles (particle diameter is 30 μm) of the total volume of the mixture are added to the mixture, and mechanical stirring is continued for 30 minutes to volatilize the acetone;

[0047] d. Drop the volatilized mixture into the rotating platform, and spin-coat to form a conductive polymer film with a thickness of 100 μm;

[004...

Embodiment 3

[0050] a. Conductive carbon black powder with an average diameter of less than 1 μm and SiO with a diameter of 30 nm 2 Dispersant powder and liquid one-component silicone rubber are mixed in acetone organic solvent with a concentration of more than 95%; wherein, the volume concentration percentage of each component is: one-component silicone rubber: conductive carbon black powder: nano-SiO 2 Dispersant powder: acetone organic solvent=100:12:2:400;

[0051] b. Perform mechanical stirring under ultrasonic vibration, the temperature of the stirring environment is 50°C, and the stirring time is 3 hours, until the mixture is in a gel state;

[0052] c. Continue mechanical stirring for 25 minutes to volatilize the acetone;

[0053] d. Drop the volatilized mixture into the rotating platform, and spin-coat to form a conductive polymer film with a thickness of 85 μm;

[0054] e, vulcanize the conductive polymer film with 1% tetraethyl orthosilicate crosslinking agent and 2% dibutylti...

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Abstract

The invention relates to a process for preparing ultra-thin compliance conductive high polymer sensitive film in the thrust transducer technique field. The process comprises that the conductive plateblack pigment powder with the mean diameter less than 1 mum, 10-50nm SiO2 dispersant powder and liquid single component silicon rubber are mixed in more than 95% acetone organic solvent, are mixed mechanically in the ultrasonic in order to achieve gel state mixture, are mixed mechanically and continuously in order to volatilize acetone, the mixture is moulded into 70-100 mum conductive high polymer film, the conductive high polymer film is vulcanized and is formed the good elastic film. The film material with the method has the thin structure, the good compliance, the big measuring range, the high accuracy and the high resolution ratio and the like, which is suitable for the on-line monitoring of the contact force and the compressional force at the intermediate of the curved surface in the industry production process and the body medical treatment rehabilitation process.

Description

technical field [0001] The invention belongs to the technical field of force sensors, and in particular relates to the processing technology of ultra-thin and flexible force-sensitive materials. Background technique [0002] The concept of "compliant sensor" can be traced back to the late 1980s. Many special structures in aerospace vehicles have brought great difficulties to the installation of traditional rigid sensors. People hope that the sensor has good flexibility, is not limited by the shape of the object to be measured, and can be attached to various regular or irregular surfaces to achieve normal sensing functions. After entering the 1990s, scientists in the United States, France, Japan, Switzerland, Portugal and other countries began to conduct research on compliant sensors, and many new sensor materials and structures were applied to this research field. [0003] The compliant force sensor is a kind of compliant sensor, which is mainly used in the measurement of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L83/04C08K3/36G01L1/18C08K3/04
Inventor 丁天怀王鹏王璐珩王守利
Owner TSINGHUA UNIV
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