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Multifunctional flexible sensing material and preparation method and application thereof

A sensing material and multi-functional technology, applied in chemical instruments and methods, using electric/magnetic devices to transmit sensing components, measuring the properties and forces of piezoelectric resistance materials, etc., can solve the development of multi-functional flexible sensing materials Insufficient, complex preparation process of flexible sensing materials, inconvenient large-scale production and application, etc., to achieve good sensory feedback ability, good cycle stability, and great application potential

Pending Publication Date: 2019-11-08
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] From the published reports so far, there are still few studies on multifunctional flexible sensing materials that can respond to multiple external stimuli. In particular, multifunctional flexible sensing materials that can simultaneously sense external stress, magnetic field stimulation and even temperature changes The development of sensing materials is still extremely lacking, and the preparation process of most flexible sensing materials is complicated and expensive.
Based on the above shortcomings, it is difficult for this type of material to meet the measurement requirements in complex environments, and it is not convenient for large-scale production and application

Method used

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  • Multifunctional flexible sensing material and preparation method and application thereof
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preparation example Construction

[0043] According to some embodiments of the present invention, there is also provided a method for preparing the multifunctional flexible sensing material as described above, comprising the following steps:

[0044] Prepare magnetorheological layer and conductive layer respectively;

[0045] The magnetorheological layer and the conductive layer are stacked and assembled to obtain a multifunctional flexible sensing material.

[0046] Wherein, the magnetorheological layer is prepared through the following steps:

[0047] a. Mix the silicone rubber matrix with the magnetic particles;

[0048] b. Carrying out vacuum degassing treatment to the mixture obtained in step a;

[0049] c. Carrying out room temperature curing treatment to the vacuum-treated mixture;

[0050] The conductive layer is prepared by the following steps:

[0051] d. mixing the silicone rubber matrix with conductive nanoparticles;

[0052] e. carrying out vacuum degassing treatment to the mixture obtained in...

Embodiment 1-1

[0063] Get the raw material of following mass fraction:

[0064] Ecoflex 0030 A: 25%

[0065] Ecoflex 0030 B: 75%

[0066] The preparation steps of the silicone rubber matrix are as follows:

[0067] Mix Ecoflex 0030 A and Ecoflex 0030 B uniformly for 2 to 3 minutes to obtain the required silicone rubber matrix, among which Ecoflex 0030 A and Ecoflex 0030 B are purchased from Dow Corning Smooth-On Series.

Embodiment 1-2

[0069] Get the raw material of following mass fraction:

[0070] Ecoflex 0030 A: 50%

[0071] Ecoflex 0030 B: 50%

[0072] Others are the same as embodiment 1-1.

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Abstract

The invention relates to a multifunctional flexible sensing material and a preparation method and application thereof. The multifunctional flexible sensing material comprises a magneto-rheological layer and an electric conduction layer. The magneto-rheological layer has a magneto-rheological effect and can be subjected to stress strain under the effect of a magnetic field; the electric conductionlayer is formed on the magneto-rheological layer, has a piezoresistive effect and can generate resistance change under the stress strain, and a temperature sensing layer is further formed on the electric conduction layer. According to the multifunctional flexible sensing material, the corresponding signal type of the flexible sensing material is extended, so that the flexible sensing material hasgood sensing feedback capacity for magnetism, force and temperature signals, the preparation technology is simple, the circulation stability is good, and the material has high application potential inthe aspect of multi-signal sensing and large-scale production in the field of flexible sensing.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, and in particular relates to a multifunctional flexible sensing material and its preparation method and application. Background technique [0002] Smart materials are a new type of functional materials that can perceive external stimuli (such as force, electricity, magnetism, sound, etc.), respond to them, and adjust their own performance in a specific way. Among them, the flexible sensing material is developed by introducing conductive micro-nano particles into the flexible polymer matrix. feedback. Due to their good monitoring capabilities, flexible sensing materials are widely used in motion capture, medical diagnosis, bionic engineering and other fields. [0003] With the complexity of external stimuli and the diversification of application requirements, flexible sensing materials with a single sensing function are far from meeting the needs of practical applications. Based o...

Claims

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Application Information

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IPC IPC(8): G01D5/12G01R33/02G01R33/00G01K11/16G01L1/18G01L9/02C08K3/18B32B25/02B32B25/04B32B25/20B32B33/00B32B37/02B32B37/06B32B38/18
CPCG01D5/12G01R33/02G01R33/0052G01L1/18G01L9/02G01K11/16C08K3/18B32B25/20B32B25/02B32B25/042B32B33/00B32B37/02B32B38/1808B32B37/06C08K2201/01B32B2250/248B32B2264/12B32B2264/105B32B2307/202B32B2307/558B32B2307/54B32B2309/68C08L83/04
Inventor 龚兴龙刘帅宣守虎王宇
Owner UNIV OF SCI & TECH OF CHINA
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