Far-infrared paper and preparation method thereof, and aramid far-infrared physiotherapy electric heating device
A far-infrared and aramid fiber technology, applied in the field of far-infrared paper and its preparation, aramid fiber far-infrared physiotherapy electric heating device, can solve the problems of low electrothermal conversion efficiency, dry air, uneven heating, etc., achieve high electrothermal conversion efficiency, Energy saving, uniform heating effect
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[0024] The invention provides a kind of preparation method of far infrared paper, comprises the following steps:
[0025] (1) mixing the dispersion of para-aramid chopped fibers and the dispersion of para-aramid precipitated fibers, and beating to obtain aramid fiber slurry;
[0026] (2) mixing the aramid fiber slurry with a reinforcing agent, followed by papermaking, drying and rolling to obtain an aramid insulating paper;
[0027] (3) Mix the aramid fiber slurry with the dispersion of carbon nanotubes and a reinforcing agent, absorb the gained aramid-carbon nanotube fiber slurry onto filter paper, and sequentially dry, roll and peel off the filter paper to obtain Aramid-carbon nanotube paper;
[0028] (4) Laminating the aramid insulating paper and aramid-carbon nanotube paper into a sandwich structure with aramid-carbon nanotube paper as the core layer and aramid insulating paper as the surface layer, and performing hot pressing to obtain far-infrared paper.
[0029] The i...
Embodiment 1
[0040] 1.5g para-aramid chopped fibers were sheared and dispersed for 40min in an aqueous solution of sodium dodecylbenzenesulfonate, cleaned with deionized water to obtain a dispersion of para-aramid chopped fibers; 3.5g The para-aramid fibrid fiber was sheared and dispersed in an aqueous solution for 40 minutes to obtain a dispersion of the para-aramid fibrid, and the above-mentioned para-aramid chopped fiber dispersion and the para-aramid fibrid The dispersions were mixed, and beaten in a tank beater for 40 minutes, and the beating concentration was controlled to be 5%, to obtain aramid fiber slurry; add 0.03g anionic polyacrylamide and 0.03g carboxymethyl fiber to the obtained aramid fiber slurry As a reinforcing agent, aramid insulating paper is obtained by copying, drying, and rolling;
[0041] 1g of carbon nanotubes is uniformly dispersed in an ethanol solvent to obtain a carbon nanotube dispersion;
[0042] 1.6g para-aramid chopped fibers were sheared and dispersed fo...
Embodiment 2
[0048] 2g of para-aramid chopped fiber was sheared and dispersed for 40 minutes in an aqueous solution of sodium dodecylbenzenesulfonate, and cleaned with deionized water to obtain a dispersion of para-aramid chopped fiber; 4g of para-aramid chopped fiber was The aramid fibrids were sheared and dispersed in an aqueous solution for 40 minutes to obtain a dispersion of para-aramid fibrids, and the above-mentioned dispersion of para-aramid chopped fibers and the dispersion of para-aramid fibrids were Mix, and beating in a trough beater for 30min, control the beating concentration to be 6%, to obtain aramid fiber slurry, add 0.03g anionic polyacrylamide and 0.03g carboxymethyl cellulose as reinforcing agent, form by papermaking, Drying and rolling to obtain aramid insulating paper;
[0049] 1g of carbon nanotubes is uniformly dispersed in an ethanol solvent to obtain a carbon nanotube dispersion;
[0050] Put 2g of para-aramid chopped fiber in the aqueous solution of sodium dodec...
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