MXene@CS@PDMS three-dimensional porous composite material and preparation method and application thereof

A composite material, three-dimensional technology, applied in the application field, can solve the problems of large sensor use limitations, difficult to achieve mass production, cumbersome preparation methods, etc., to achieve the effect of small hysteresis, simple method and simple process

Active Publication Date: 2019-10-25
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on using cube sugar as the matrix template as the sensor skeleton (document 1, 2, 3) and the research on using MXene as the conductive filler (document 4, 5) the preparation method is cumbersome, the cost is high, and the prepared The use of sensors is limited and it is difficult to achieve mass production

Method used

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  • MXene@CS@PDMS three-dimensional porous composite material and preparation method and application thereof
  • MXene@CS@PDMS three-dimensional porous composite material and preparation method and application thereof
  • MXene@CS@PDMS three-dimensional porous composite material and preparation method and application thereof

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Effect test

Embodiment 1

[0047] The preparation method of MXene nanosheets is as follows:

[0048] (1) Add 10ml of deionized water to a polytetrafluoroethylene container and ice bath to reduce the temperature of the deionized water to below 5℃. Under the condition of magnetic stirring, slowly add 20ml, 9 moles of HCl per liter, and continue stirring Reduce the temperature to below 5 degrees Celsius, add 1g LiF and stir for 1h;

[0049] (2) Slowly add 1gMAX precursor to the polytetrafluoroethylene container;

[0050] (3) After the MAX precursor is added, the temperature is naturally raised to room temperature for about 30 minutes, and then the temperature is raised to 35°C, and the reaction is maintained for about 25 hours;

[0051] (4) Centrifuge the reacted product at 3500 rpm for 5 minutes and repeat it several times until the pH of the supernatant is greater than 6;

[0052] (5) Collect the final neutral or nearly neutral suspension, and peel it off ultrasonically under argon protection;

[0053] (6) Centrif...

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Abstract

The invention relates to an MXene@CS@PDMS three-dimensional porous composite material and a preparation method and application thereof. A high-sensitivity and high-reliability piezoresistive sensor isprepared by using the material. Since the cube sugar micro-pore granularity is proper and the structure is loose, the prepared PDMS has a three-dimensional sponge-like porous structure by using the cube sugar as a template and has the high flexibility and deformability. With introduction of the MXen@CS@PDMS system, an MXene nanosheet is attached to the PDMS surface tightly after successful loading of the MXene, so that a reliable three-dimensional conductive material is formed. Moreover, reaction parameters in the process of preparing the sensor are optimized to obtain the MXene@CS@PDMS composite three-dimensional structure with good stress and strain is obtained.

Description

Technical field [0001] The invention belongs to the field of flexible and wearable electronics and new material technology, and specifically relates to a MXene@CS@PDMS three-dimensional porous composite material and its preparation method and application, and more specifically to a new type of composite piezoresistive MXene@CS@ A PDMS three-dimensional porous composite material, a preparation method thereof, and a low-cost piezoresistive pressure sensor assembled by using the composite material. Background technique [0002] As a new type of conductive material, the sheet-like nanomaterial MXene is a two-dimensional transition metal carbide / nitride. The first type of MXene was discovered in 2011 by Professor Yuri Gao Guoqi of Drexel University and his colleagues. MXene is obtained by etching the MAX phase of its precursor material. Among them, M is a transition metal, A is mainly a group III or IV element, and X is a C or N element. Because MXene has a two-dimensional sheet st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/18G01L9/06B82Y30/00B82Y40/00B82Y15/00
CPCB82Y15/00B82Y30/00B82Y40/00G01L1/18G01L9/06
Inventor 李晓锋贾雪芹李晓鹏宋德奎于中振
Owner BEIJING UNIV OF CHEM TECH
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