Preparation method and application of porous conductive polymer material with pressure sensitive properties

A porous conductive and polymer technology, applied in the measurement of the property force of piezoelectric resistance materials, multi-tester circuits, and the use of repeated force/pulse force to test the strength of materials, etc., can solve the problems of poor flexibility, complicated preparation process, Small compressive strain and other issues, to achieve the effect of long service life, wide range of sources, high compressive strain

Active Publication Date: 2018-10-09
ZHENGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at above-mentioned defect, provides a kind of new preparation method of the porous conductive polymer material with pressure-sensitive characteristic (resistance is sensitive to pressure), this method solves the complicated preparation process of conductive polymer composite material as pressure-sensitive material , poor flexibility, can withstand small compressive strain and other problems, prepared a porous conductive polymer pressure-sensitive material with good stability and recovery

Method used

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  • Preparation method and application of porous conductive polymer material with pressure sensitive properties
  • Preparation method and application of porous conductive polymer material with pressure sensitive properties
  • Preparation method and application of porous conductive polymer material with pressure sensitive properties

Examples

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Embodiment 1

[0035] Example 1 Preparation of Porous Conductive Polymer Composite Material with Pressure Sensitive Properties

[0036] Concrete preparation steps are:

[0037] (1) Drying of raw materials: Dry TPU and MWCNTs in a vacuum oven for 8 hours at 80°C;

[0038](2) Preparation of suspension: mix 0.0513g MWCNTs powder and 40ml dioxane in a 100ml beaker, and ultrasonically disperse in a water bath at 15-25°C for 30min to obtain a uniform MWCNTs / dioxane mixture, then Add 2g of TPU to it, stir at 40°C for about 1 hour, and cool to room temperature to obtain a TPU / MWCNTs / dioxane suspension;

[0039] (3) One-way freezing: Pour the suspension into a flat-bottomed glass test tube with a height of 10 cm and a diameter of 2 cm, and seal it with filter paper; then tightly cover the area of ​​the test tube except the bottom with heat-insulating foam and place it on a smooth surface On an iron block whose length, width and height are 10cm, then place the iron block, test tube and heat insulati...

Embodiment 2-7

[0041] Example 2-7 Preparation of Porous Conductive Polymer Composite Material with Pressure Sensitive Properties

[0042] Each raw material ratio of embodiment 2-7 is as shown in table 1. The specific preparation methods are all the same as in Example 1.

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Abstract

The invention belongs to the field of conductive polymer composites pressure-sensitive materials and particularly relates to a preparation method of a porous conductive polymer material with pressure-sensitive property and an application thereof. The preparation method of the porous conductive polymer material with pressure-sensitive property comprises the following steps: a) suspension preparation; b) unidirectional freezing; and c) low-temperature low-pressure drying. The porous conductive polymer composite with pressure-sensitive property prepared in the invention has excellent stability and resilience and can be used for preparing a light polymer-based strain sensor; and by combining the obtained conductive polymer composite with the circuit board and semiconductor technology, various pressure-sensitive sensors with good stability and long service life can be made.

Description

technical field [0001] The invention belongs to the field of stress-sensitive materials of conductive polymer composite materials, and in particular relates to a preparation method and application of a porous conductive polymer material with pressure-sensitive properties. Background technique [0002] The strain sensor is a sensing device that can convert external stress field stimulation into signal output such as resistance, current and capacitance changes. Traditional strain gauge sensors are mainly made of inorganic materials, such as metal strain gauge sensors. Inorganic materials have poor flexibility and a small measurable strain range, which greatly limits the application range of strain gauge sensors. [0003] Porous conductive polymer materials are a new type of polymer materials that have both the conductive properties of conductive polymer materials and the light weight and cushioning properties of foam materials. As a functional polymer material, it has high p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/26C08K7/24C08L75/04G01R15/12G01N3/32G01L1/18
CPCC08J9/26C08J2375/04C08K7/24C08K2201/001G01L1/18G01N3/32G01R15/125C08L75/04
Inventor 代坤黄文举李毅祥徐卓言郑国强刘春太
Owner ZHENGZHOU UNIV
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