Dry mask with self-heating function and preparation method thereof
A self-heating and functional technology, applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of insufficient fiber water absorption, fast heating response, loss, etc., to facilitate dissolution, increase porosity, Dissolution-promoting effect
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Embodiment 1
[0044] (A) Hollow polypropylene containing 20wt% alkali-soluble polyester (the molar ratio of PTA, 5-sulfonate isophthalate, EG and PEG600 = 1:0.3:3.5:0.15) at a bath ratio of 1g:15mL The fibers (obtained from alkali-soluble polyester and polypropylene through a conventional hollow fiber melt spinning process) were immersed in 2wt% sodium hydroxide aqueous solution at 70°C for alkali reduction treatment, and were taken out after 1 hour, washed and dried to obtain hollow porous polycarbonate. Acrylic fibers.
[0045] (B) Plasma treatment of hollow porous polypropylene fibers under oxygen atmosphere for 10 min to obtain hollow porous polypropylene fibers with surface hydroxyl modification.
[0046] (C) Under stirring conditions, immerse the hollow porous polypropylene fiber modified by surface hydroxyl groups in the pre-deoxidized impregnation solution containing 3wt% nano-iron powder at a bath ratio of 1g:35mL, take it out after immersion for 30min, and drain the surface of the...
Embodiment 2
[0051] (A) Hollow polypropylene containing 10wt% alkali-soluble polyester (PTA, 5-sulfonate lithium isophthalate, EG and PEG600 molar ratio = 1:0.3:3.5:0.15) at a bath ratio of 1g:10mL The fibers (obtained from alkali-soluble polyester and polypropylene through a conventional hollow fiber melt spinning process) were dipped in 1wt% sodium hydroxide aqueous solution at 60°C for alkali reduction treatment, taken out after 0.5h, washed, and dried at 120°C to obtain Hollow porous polypropylene fibers.
[0052] (B) Plasma treatment of hollow porous polypropylene fibers for 5 min in an oxygen atmosphere to obtain hollow porous polypropylene fibers modified by surface hydroxyl groups.
[0053] (C) Under stirring conditions, immerse the hollow porous polypropylene fiber modified by surface hydroxyl groups in the pre-deoxidized impregnation solution containing 1wt% nano-iron powder at a bath ratio of 1g:30mL, take it out after immersion for 20min, and drain the surface of the fiber The...
Embodiment 3
[0058] (A) Hollow polypropylene containing 40wt% alkali-soluble polyester (the molar ratio of PTA, 5-sulfonate isophthalate, EG and PEG600 = 1:0.3:3.5:0.15) at a bath ratio of 1g:20mL Fibers (obtained from alkali-soluble polyester and polypropylene through conventional hollow fiber melt spinning process) were dipped in 3wt% sodium hydroxide aqueous solution at 80°C for alkali reduction treatment, taken out after 2 hours, washed, and dried at 120°C to obtain hollow Porous polypropylene fibers.
[0059] (B) Plasma treatment of hollow porous polypropylene fibers under an oxygen atmosphere for 15 min to obtain hollow porous polypropylene fibers modified by surface hydroxyl groups.
[0060] (C) Immerse the hollow porous polypropylene fiber modified by surface hydroxyl groups in the pre-deoxidized impregnation solution containing 5wt% nano-iron powder under the condition of stirring according to the bath ratio of 1g:40mL, take it out after immersion for 40min, and drain the surface ...
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