Knitted flexible sensing fabric based on Mxene coated conductive yarn and preparation method
A conductive yarn and fabric technology, applied in knitting, weft knitting, yarn and other directions, to achieve the effects of high sensitivity, high strain, and high wearing comfort
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preparation example Construction
[0024] A kind of preparation method of the knitted flexible sensing fabric based on Mxene coating conductive yarn of the present invention, comprises the following steps:
[0025] 1) Carry out grafting modification to the stainless steel blended yarn pretreated by plasma in tris-hydroxymethylaminomethane (Tris-HCl) buffer solution of dopamine, the concentration of the reaction solution is 0.5-5g / L, the modification time for 12-48 hours. The tris buffered solution of dopamine has a concentration of 5-10 mmol / L and a pH value of 8-10. Stainless steel blended yarn includes blended yarn and stainless steel fiber, wherein the mass ratio of stainless steel fiber to stainless steel blended yarn is 10-40%, and the blended yarn includes cotton fiber, cellulose fiber, polyester fiber, polyamide fiber or acrylic fiber One or a combination of acrylic fibers. This step can increase the reactivity of the surface of the blended yarn.
[0026] 2) The above-mentioned dopamine-modified stain...
Embodiment 1
[0032] The plasma-pretreated stainless steel blended yarn with a cotton fiber / stainless steel fiber weight ratio of 70:30 was grafted in a dopamine-tris-HCl buffer solution with a concentration of 2 g / L. property, wherein the concentration of tris in the Tris-HCl buffer solution is 8mmol / L, the pH value of the buffer solution is 9, and the modification time of the blended yarn in the dopamine reaction solution is 24 hours; The modified stainless steel blended yarn was subjected to 10 dipping-drying cycles in the Mxene aqueous solution with a concentration of 0.5 mg / mL to realize the coating of MXene inside and on the surface of the blended yarn, and to form a conductive MXene on the stainless steel blended yarn substrate. Structure; the above-mentioned MXene with secondary conductive structure is coated with stainless steel blended yarn, and 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane is deposited on its surface by physical vapor deposition process to form a hydrophobic coati...
Embodiment 2
[0034]Plasma-pretreated stainless steel blended yarns with a weight ratio of cotton fibers / polyester fibers / stainless steel fibers of 30:30:40 were treated with tris-hydroxymethylaminomethane (Tris-HCl) at a concentration of 0.5 g / L dopamine. Carry out grafting modification in buffer solution, wherein the concentration of tris in Tris-HCl buffer solution is 5mmol / L, the pH value of buffer solution is 8, the modification time of blended yarn in dopamine reaction solution is 14 hours; the above-mentioned dopamine-modified stainless steel blended yarn was subjected to 5 dipping-drying cycles in the Mxene aqueous solution with a concentration of 6 mg / mL to realize the coating of MXene inside and on the surface of the blended yarn. The MXene conductive structure is formed on the yarn substrate; the above-mentioned MXene with secondary conductive structure is coated with stainless steel blended yarn, and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane is deposited on the surface by phys...
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