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Multifunctional compound fabric and production method thereof

A composite fabric, multi-functional technology, applied in physical processing, textiles and papermaking, fiber types, etc., can solve the problem of limiting the application range of conductive polymer composite fabrics, ignoring the application of electromagnetic shielding materials, and being unable to overcome the embrittlement of polymer matrix, etc. problems, to achieve excellent electrothermal and photothermal conversion performance, excellent superhydrophobic performance, and suitable for large-scale manufacturing

Active Publication Date: 2019-09-20
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has achieved good results, it still ignores the application of electromagnetic shielding materials affected by the environment.
When the conductive electromagnetic shielding fabric is applied in a relatively humid environment, water vapor will invade the interior of the material, which will greatly affect the conductivity of the electromagnetic shielding fabric and affect its electromagnetic shielding effectiveness; another example is when the electromagnetic shielding fabric is used in some relatively low temperature environments (-20°C), the polymer matrix will become hard and brittle, which greatly affects its daily use. These shortcomings greatly limit the application range of conductive polymer composite fabric electromagnetic shielding materials.
Document 2 made a durable superhydrophobic electromagnetic shielding fabric by drip-coating silver nanowire dispersion liquid on commercial knitted fabrics, and superhydrophobic treatment. The electromagnetic shielding performance can reach 51.5dB. After being folded and stretched, it can still maintain excellent electromagnetic shielding performance (Jia, L.C.; et al. Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding. ACS ApplMater Interfaces 2019, 11, 1680-1688.), through this method, electromagnetic shielding The material works normally in a humid environment, but it still cannot overcome the problem that the polymer matrix used as an electromagnetic shielding CPC becomes brittle in an extremely cold environment (the ambient temperature is lower than the glass transition temperature)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Multifunctional compound fabric and production method thereof
  • Multifunctional compound fabric and production method thereof
  • Multifunctional compound fabric and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) O 2 Atmospheric plasma treatment was performed for 10 minutes before use. Silver trifluoroacetate was weighed and dissolved in ethanol to prepare a 25 wt.% STA solution. Soak the above-mentioned surface-modified PP non-woven fabric in 25wt.% STA solution for 40 minutes, take it out and dry it, reduce it with hydrazine hydrate for 30 minutes, rinse it repeatedly with deionized water, and dry it at 60°C to obtain a surface Silver-plated PP fabric. The preparation process is as figure 1 As shown, the microscopic morphology of the prepared multifunctional composite fabric was observed with a scanning electron microscope as Figure 2a .

[0031] (2) Test: contact angle test, use the OCA20 contact angle measuring instrument to test the contact angle of the silver-plated PP fabric, drop 5μL of distilled water on the surface of the fabric, in order to ensure the accuracy of the results, test 5 times, take the average value, and test see results image 3 ; Electromagne...

Embodiment 2

[0040] (1) O 2Atmospheric plasma treatment was performed for 10 minutes before use. Silver trifluoroacetate was weighed and dissolved in ethanol to prepare a 25 wt.% STA solution. Soak the above-mentioned surface-modified PP non-woven fabric in 25wt.% STA solution for 40 minutes, take it out and dry it, reduce it with hydrazine hydrate for 30 minutes, rinse it repeatedly with deionized water, and dry it at 60°C to obtain a surface Silver-plated PP fabric. Combining PDMS with Fe 3 o 4 Add to n-heptane, drop 0.1g oleylamine, ultrasonically disperse for 1h, Fe 3 o 4 The mass fraction is 0.8wt.%, and the PDMS mass fraction is 0.8wt.%. Set the spraying parameters: the spraying pressure is 60kPa, the spraying distance is 25cm, the two sides of the silver-plated fabric are sprayed once with the mixed dispersion liquid, and the spraying time is 5s each time. Hydrophobic multifunctional fabric, the preparation process such as figure 1 As shown, the microscopic morphology of the...

Embodiment 3

[0043] (1) O 2 Atmospheric plasma treatment was performed for 10 minutes before use. Silver trifluoroacetate was weighed and dissolved in ethanol to prepare a 25 wt.% STA solution. Soak the above-mentioned surface-modified PP non-woven fabric in 25wt.% STA solution for 40 minutes, take it out and dry it, reduce it with hydrazine hydrate for 30 minutes, rinse it repeatedly with deionized water, and dry it at 60°C to obtain a surface Silver-plated PP fabric. Combining PDMS with Fe 3 o 4 Add to n-heptane, drop 0.1g oleylamine, ultrasonically disperse for 1h, Fe 3 o 4 The mass fraction is 0.8wt.%, and the PDMS mass fraction is 0.8wt.%. Set the spraying parameters: the spraying pressure is 60kPa, the spraying distance is 25cm, and the mixed dispersion liquid is sprayed on both sides of the silver-plated fabric for 3 times, each spraying time is 5s, and the curing time is 20 minutes after each spraying, and 80°C after 3 times The superhydrophobic multifunctional fabric with e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses multifunctional compound fabric and a production method thereof. The production method includes: performing oxygen plasma hydrophilic modification on commercial polypropylene fabric, then chemically plating the surface of the polypropylene fabric with a silver layer, spraying the mixed dispersion of Fe3O4 and PDMS to the surface of the sliver-plated fabric, and finally curing to obtain the multifunctional compound fabric. The multifunctional compound fabric has excellent electromagnetic shielding performance, super-hydrophobicity and electrothermal and photothermal responsiveness and can be applied to fields such as electromagnetic shielding garments in extreme environments, intelligent response fabric, photothermal conversion, electrothermal conversion or flexible wearable devices.

Description

technical field [0001] The invention relates to a multifunctional composite fabric and a preparation method thereof, belonging to the technical field of preparation of functional polymer materials. Background technique [0002] The 5G era is approaching, with the introduction of high frequency, the upgrade of hardware components, and the exponential increase in the number of networked devices and antennas. Electromagnetic Interference (EMI) between devices and within the device itself is ubiquitous. The harm of electromagnetic interference and electromagnetic radiation to electronic equipment and human beings is also becoming more and more serious. [0003] Traditional metal-based materials are widely used in EMI shielding due to their excellent electrical conductivity, but their further applications are limited due to their shortcomings such as high density, poor corrosion resistance, and poor flexibility. Compared with traditional metal-based materials, conductive polymer...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M11/83D06M11/49D06M15/643D06M10/02D06M101/20
CPCD06M11/83D06M11/49D06M15/643D06M10/025D06M2101/20
Inventor 高杰峰骆俊晨霍力垚林理伟张曙吴泽枫
Owner YANGZHOU UNIV
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