Fluorine-containing polymer/conductive fiber dielectric material and preparation method thereof

[0038]Take a 2m long PA66 fiber and soak it in ethanol solvent for 20-30min, then take it out and wash it with distilled water, then put it in a vacuum drying oven to dry for use. Weigh 1.215g of Tris, dissolve it in an appropriate amount of distilled water, stir with a glass rod until completely dissolved, then add 1.47ml of 2g / L HCl solution to adjust the pH to 8.5 to obtain a Tris-HCl solution with a pH of 8.5. 0.4 g of dopamine was weighed and added to the Tris-HCl solution configured above to obtain a 2 g / L dopamine solution. Then add PA66 fiber to soak for 3 minutes, then take it out and react in air for 2 minutes, pull it repeatedly 15 times, wash with deionized water and dry to obtain polydopamine-coated PA66 fiber, cut into pieces, length 0.1-5cm, and set aside.

[0039] Prepare a silver nitrate solution with a concentration of 20 g / L, and gradually add ammonia water until the precipitate completely disappears to obtain the corresponding silver ammonia solution. Imme...

[0043] Take a 2.5m long PA66 / PET composite fiber and soak it in ethanol solvent for 20-30min, then take it out and wash it with distilled water, then put it in a vacuum drying oven to dry for use. Weigh 1.224g of Tris and dissolve it in an appropriate amount of distilled water, stir it with a glass rod until it is completely dissolved, then add 1.51ml of 2g / L HCl solution to adjust the pH to 8. 0.4 g of dopamine was weighed and added to the Tris-HCl solution configured above to obtain a 1 g / L dopamine solution. Then add PA66 fiber to soak for 5 minutes, then take it out and react in the air for 3 minutes, repeat pulling 9 times, wash with deionized water and dry to obtain polydopamine-coated PA66 / PET composite fiber, cut into pieces, length 0.1-5cm, and set aside.

[0044] Prepare a silver nitrate solution with a concentration of 30 g / L, and gradually add ammonia water until the precipitate completely disappears to obtain the corresponding silver ammonia solution. Immerse the...