CN111067842A - Preparation method of aluminum oxide-based skin-moistening mask - Google Patents
Preparation method of aluminum oxide-based skin-moistening mask Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9783—Angiosperms [Magnoliophyta]
- A61K8/9789—Magnoliopsida [dicotyledons]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
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- A—HUMAN NECESSITIES
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- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/26—Aluminium; Compounds thereof
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/67—Vitamins
- A61K8/678—Tocopherol, i.e. vitamin E
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/87—Polyurethanes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
- A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/005—Antimicrobial preparations
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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Abstract
The invention discloses a preparation method of an alumina-based moisturizing mask. Dissolving thermoplastic polyurethane particles and polyurethane hydrogel particles in a solvent to obtain a polyurethane solution, adding superfine alumina powder into the polyurethane solution, stirring to obtain a solid-liquid mixture, performing reduced pressure defoaming treatment, coating the mixture on a glass plate, soaking the glass plate into deionized water, curing to form a film, drying the film, peeling the film, and soaking the film in a mixed solution of a peony root extract, tea tree essential oil, butanediol and vitamin E to obtain the aluminum oxide-based skin-moistening mask. The materials are easy to obtain, the method is simple and easy to implement, the equipment requirement is not high, the method is environment-friendly, the obtained mask has good water locking and moisture retention performances, the superfine alumina is used as the main raw material of the mask, the loading function of the mask is fully improved, the loaded peony root extract can improve skin darkness and uneven skin color, and the tea tree essential oil has a bacteriostatic effect and special fragrance; the butanediol has good moisturizing effect; vitamin E can promote cell repair and whiten and moisten skin.
Description
Technical Field
The invention relates to an organic-inorganic hybrid material, in particular to a preparation method of an alumina-based moisturizing mask.
Background
The mask is a key carrier of a beauty care product and is an important category of the skin care product. As people's attention to facial care has increased, facial masks have become an integral part of many people's lives. The most basic and important purpose is to compensate the still insufficient cleaning work of makeup removal and face washing. Most of the existing facial masks in the market take activated carbon and diatom ooze as main fillers, and essence components such as vitamin C, glycolic acid and hyaluronic acid are added to achieve the effects of moisturizing, whitening and the like.
Disclosure of Invention
The invention aims to provide a preparation method of an alumina-based moisturizing mask, which has the advantages of easily obtained materials and simple process.
The invention is realized by the following technical scheme:
a preparation method of an alumina-based skin moistening mask comprises the following steps:
(1) preparing and adding 17-28 parts by weight of thermoplastic polyurethane particles, 13-18 parts by weight of dried polyurethane hydrogel particles and 100-120 parts by weight of solvent into a reactor, stirring at a constant temperature of 70-80 ℃ for 2-4 hours to fully dissolve the thermoplastic polyurethane particles and the polyurethane hydrogel particles in the solvent, and cooling to room temperature to obtain a polyurethane solution;
(2) adding fine alumina powder into the polyurethane solution obtained in the step (1), wherein the mass ratio of the polyurethane solution to the fine alumina powder is 133-145: 20-27, and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) decompressing and defoaming the solid-liquid mixture obtained in the step (2) for 0.5-1.5 h, uniformly coating the mixture on a glass plate, immersing the glass plate into deionized water, and drying the mixture in a drying oven after the solid-liquid mixture is completely cured into a film;
(4) and (3) after the glass plate and the film are cooled, peeling the film, and then soaking the film in a mixed solution of a peony root extract, tea tree essential oil, butanediol and vitamin E for 3-6 h to obtain the alumina-based skin-moistening facial mask product.
After the aluminum oxide-based skin moistening mask is taken out of the reactor, the film product can be cut into different sizes according to the requirements.
Preferably, in step (1), the polyurethane hydrogel particles are nonionic polyurethane hydrogel particles.
Preferably, in the step (1), the polyurethane particles are polyester type thermoplastic polyurethane particles or/and polyether type thermoplastic polyurethane particles, and the shore hardness of the polyurethane particles is 60-75A.
Preferably, in step (1), the solvent is N, N-dimethylformamide or/and N, N-dimethylacetamide.
Preferably, in the step (2), the fine alumina powder is white powder with a fineness of 600 to 1200 meshes.
Preferably, in the step (2), the weight percentages of the thermoplastic polyurethane, the polyurethane hydrogel, the solvent and the fine alumina in the prepared solid-liquid mixture are as follows: 10.4-12.21% of thermoplastic polyurethane, 7.57-10.55% of polyurethane hydrogel, 62.12-68.4% of solvent and 13.9-15.32% of superfine alumina.
Preferably, in the step (3), the total thickness of the alumina-based moisturizing mask film is controlled to be 0.42-0.66 mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate.
Preferably, in the step (3), the drying temperature is 60-80 ℃, and the drying time is 3-5 h.
Preferably, in the step (4), the weight percentages of the mixed solution of the peony root extract, the tea tree essential oil, the butanediol and the vitamin E are as follows: the tea tree essential oil comprises, by weight, 8-10% of a peony root extract, 3-5% of tea tree essential oil, 5-8% of butanediol, 6-11% of vitamin E and the balance deionized water.
Compared with the prior art, the invention has the following beneficial effects:
(1) the preparation method of the alumina-based moisturizing mask provided by the invention has the advantages of easily available materials, simplicity, easiness, low requirements on equipment and environmental friendliness. In the production process, waste liquid and waste residue are not generated basically, and the environment is not polluted.
(2) The polyurethane hydrogel in the alumina-based moisturizing mask prepared by the invention and the porous structure of the hydrogel improve the water-locking and moisturizing performances of the mask.
(3) The superfine alumina in the facial mask prepared by the invention has good adsorption function. The micro-fine alumina is used as the main raw material of the mask, the loading function of the mask can be fully improved, and the loaded peony root extract can improve the problems of dark skin and uneven skin color; the tea tree essential oil has a certain antibacterial effect and has special fragrance; the butanediol has a good moisturizing effect; the vitamin E can promote cell repair and has certain whitening and skin moistening effects.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples, wherein the raw materials are all medical grade products, and the equipment is common industrial production equipment.
Example 1
(1) Weighing 10 grams of polyester type thermoplastic polyurethane particles with Shore hardness of 55A, stirring 7.65 grams of nonionic polyurethane hydrogel particles and 64.75 grams of N, N-dimethylformamide in a reactor at constant temperature of 80 ℃ for 3 hours to fully dissolve the polyester type thermoplastic polyurethane particles and the polyurethane hydrogel particles in a solvent, and cooling to room temperature to obtain a polyurethane solution;
(2) adding 13.65 g of 600-mesh superfine alumina powder into the polyurethane solution obtained in the step (1), and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) defoaming the solid-liquid mixture obtained in the step (2) under reduced pressure for 1h, uniformly coating the mixture on a glass plate, then soaking the glass plate into deionized water, placing the mixture in a drying oven after the solid-liquid mixture is completely cured into a film, drying the mixture at 60 ℃ for 5h, and controlling the total thickness of the film to be 0.42mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate;
(4) after the glass plate and the film are cooled, peeling the film, and then putting the film into a mixed solution of a peony root extract, tea tree essential oil, butanediol and vitamin E for soaking for 5 hours (the weight percentage is that the peony root extract accounts for 8 percent, the tea tree essential oil accounts for 3 percent, the butanediol accounts for 5 percent, the vitamin E accounts for 6 percent, and deionized water accounts for 78 percent);
(5) and taking the membrane out of the reactor, and cutting the membrane product into a proper size according to the requirement to obtain the alumina-based skin moistening mask product.
In the solid-liquid mixture obtained in this example, the mass percentage of the polyester-type thermoplastic polyurethane was 10.41%, the mass percentage of the polyurethane hydrogel was 7.96%, the mass percentage of N, N-dimethylformamide was 67.41%, and the mass percentage of the fine alumina powder was 14.21%. The resulting film product was white in color and 0.42mm thick.
Through the observation of the surface appearance of the alumina-based moisturizing mask prepared by the embodiment on a scanning electron microscope, the porous structure in the alumina-based moisturizing mask can be found. Through tensile force and folding tests, the alumina-based skin moistening mask can be stretched to 3 times of length without breaking, the folding resistance can reach more than 1000 times, and the alumina-based skin moistening mask has excellent mechanical properties. The water absorption test of the dried alumina-based moisturizing mask shows that the water absorption of the alumina-based moisturizing mask is 167%, and the water absorption effect is good. Through use tests, after the alumina-based moisturizing mask is covered on hands for 30min, the skin is tender and glossy and has faint scent, which shows that the moisturizing effect of the mask is good.
Example 2
(1) Weighing 15 g of polyester type thermoplastic polyurethane particles with Shore hardness of 60A, stirring 11.25 g of nonionic polyurethane hydrogel particles and 82.5 g of N, N-dimethylformamide in a reactor at constant temperature of 80 ℃ for 3h to fully dissolve the polyester type thermoplastic polyurethane particles and the polyurethane hydrogel particles in a solvent, and cooling to room temperature to obtain a polyurethane solution;
(2) adding 18.57 g of 800-mesh superfine alumina powder into the polyurethane solution obtained in the step (1), and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) defoaming the solid-liquid mixture obtained in the step (2) under reduced pressure for 1h, uniformly coating the mixture on a glass plate, then soaking the glass plate into deionized water, placing the mixture in a drying oven after the solid-liquid mixture is completely cured into a film, drying the mixture at 70 ℃ for 4h, and controlling the total thickness of the film to be 0.48mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate;
(4) cooling the glass plate and the film, peeling the film, and then soaking the film in a mixed solution of the peony root extract, the tea tree essential oil, the butanediol and the vitamin E for 5 hours (the weight percentage is that the peony root extract accounts for 9 percent, the tea tree essential oil accounts for 3 percent, the butanediol accounts for 6 percent, the vitamin E accounts for 7 percent, and the deionized water accounts for 75 percent);
(5) and taking the membrane out of the reactor, and cutting the membrane product into a proper size according to the requirement to obtain the alumina-based skin moistening mask product.
In the solid-liquid mixture obtained in this example, the mass percentage of the polyester-type thermoplastic polyurethane was 11.78%, the mass percentage of the polyurethane hydrogel was 8.84%, the mass percentage of the N, N-dimethylformamide was 64.8%, and the mass percentage of the fine alumina powder was 14.59%. The resulting film product was white in color and 0.48mm thick.
Through the observation of the surface appearance of the alumina-based moisturizing mask prepared by the embodiment on a scanning electron microscope, the porous structure in the alumina-based moisturizing mask can be found. Through tensile force and folding tests, the alumina-based skin moistening mask can be stretched to 3 times of length without breaking, the folding resistance can reach more than 1000 times, and the alumina-based skin moistening mask has excellent mechanical properties. The water absorption test of the dried aluminum oxide-based moisturizing mask shows that the aluminum oxide-based moisturizing mask has 179 percent of water absorption and good water absorption effect. Through use tests, after the alumina-based moisturizing mask is covered on hands for 30min, the skin is tender and glossy and has faint scent, which shows that the moisturizing effect of the mask is good.
Example 3
(1) Weighing 17 g of polyether type thermoplastic polyurethane particles with the Shore hardness of 65A, placing 15 g of nonionic polyurethane hydrogel particles and 110 g of N, N-dimethylacetamide in a reactor, stirring at the constant temperature of 80 ℃ for 3h to fully dissolve the polyether type thermoplastic polyurethane particles and the polyurethane hydrogel particles in a solvent, and cooling to the room temperature to obtain a polyurethane solution;
(2) adding 24.82 g of 1000-mesh fine alumina powder into the polyurethane solution obtained in the step (1), and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) defoaming the solid-liquid mixture obtained in the step (2) under reduced pressure for 1h, uniformly coating the mixture on a glass plate, then soaking the glass plate into deionized water, placing the mixture in a drying oven after the solid-liquid mixture is completely cured into a film, drying the mixture at 80 ℃ for 3h, and controlling the total thickness of the film to be 0.54mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate;
(4) cooling the glass plate and the film, peeling the film, and then soaking the film in a mixed solution of the peony root extract, the tea tree essential oil, the butanediol and the vitamin E for 5 hours (the weight percentage is that the peony root extract accounts for 9 percent, the tea tree essential oil accounts for 4 percent, the butanediol accounts for 6 percent, the vitamin E accounts for 7 percent, and the deionized water accounts for 74 percent);
(5) and taking the membrane out of the reactor, and cutting the membrane product into a proper size according to the requirement to obtain the alumina-based skin moistening mask product.
In the solid-liquid mixture obtained in the present example, the mass percentage of the polyether thermoplastic polyurethane was 10.19%, the mass percentage of the polyurethane hydrogel was 8.99%, the mass percentage of N, N-dimethylformamide was 65.94%, and the mass percentage of fine alumina powder was 14.88%. The resulting film product was white in color and 0.54mm thick.
Through the observation of the surface appearance of the alumina-based moisturizing mask prepared by the embodiment on a scanning electron microscope, the porous structure in the alumina-based moisturizing mask can be found. Through tensile force and folding tests, the alumina-based skin moistening mask can be stretched to 4 times of length without breaking, the folding resistance can reach more than 1000 times, and the alumina-based skin moistening mask has excellent mechanical properties. The water absorption test of the dried alumina-based moisturizing mask shows that the water absorption of the alumina-based moisturizing mask is 184%, and the water absorption effect is good. Through use tests, after the alumina-based moisturizing mask is covered on hands for 30min, the skin is tender and glossy and has faint scent, which shows that the moisturizing effect of the mask is good.
Example 4
(1) Weighing 20 g of polyether type thermoplastic polyurethane particles with Shore hardness of 70A, stirring 18.45 g of nonionic polyurethane hydrogel particles and 114 g of N, N-dimethylformamide in a reactor at constant temperature of 80 ℃ for 3h to fully dissolve the polyether type thermoplastic polyurethane particles and the polyurethane hydrogel particles in a solvent, and cooling to room temperature to obtain a polyurethane solution;
(2) adding 26.47 g of 1200-mesh superfine alumina powder into the polyurethane solution obtained in the step (1), and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) defoaming the solid-liquid mixture obtained in the step (2) under reduced pressure for 1h, uniformly coating the mixture on a glass plate, then soaking the glass plate into deionized water, placing the mixture in a drying oven after the solid-liquid mixture is completely cured into a film, drying the mixture at 80 ℃ for 3h, and controlling the total thickness of the film to be 0.6mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate;
(4) cooling the glass plate and the film, peeling the film, and then soaking the film in a mixed solution of a peony root extract, tea tree essential oil, butanediol and vitamin E for 5 hours (the weight percentage is that the peony root extract accounts for 10 percent, the tea tree essential oil accounts for 5 percent, the butanediol accounts for 7 percent, the vitamin E accounts for 8 percent, and deionized water accounts for 70 percent);
(5) and taking the membrane out of the reactor, and cutting the membrane product into a proper size according to the requirement to obtain the alumina-based skin moistening mask product.
In the solid-liquid mixture obtained in the present example, the mass percentage of the polyether thermoplastic polyurethane was 11.18%, the mass percentage of the polyurethane hydrogel was 10.31%, the mass percentage of N, N-dimethylacetamide was 63.72%, and the mass percentage of the fine alumina powder was 14.79%. The obtained film product was white in color and 0.6mm in thickness.
Through the observation of the surface appearance of the alumina-based moisturizing mask prepared by the embodiment on a scanning electron microscope, the porous structure in the alumina-based moisturizing mask can be found. Through tensile force and folding tests, the alumina-based skin moistening mask can be stretched to 4 times of length without breaking, the folding resistance can reach more than 1000 times, and the alumina-based skin moistening mask has excellent mechanical properties. The water absorption test of the dried aluminum oxide-based moisturizing mask shows that the water absorption of the aluminum oxide-based moisturizing mask is 206%, and the water absorption effect is good. Through use tests, after the alumina-based moisturizing mask is covered on hands for 30min, the skin is tender and glossy and has faint scent, which shows that the moisturizing effect of the mask is good.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The preparation method of the aluminum oxide-based skin moistening mask is characterized by comprising the following steps:
(1) preparing and adding 17-28 parts by weight of thermoplastic polyurethane particles, 13-18 parts by weight of dried polyurethane hydrogel particles and 100-120 parts by weight of solvent into a reactor, stirring at a constant temperature of 70-80 ℃ for 2-4 hours to fully dissolve the thermoplastic polyurethane particles and the polyurethane hydrogel particles in the solvent, and cooling to room temperature to obtain a polyurethane solution;
(2) adding fine alumina powder into the polyurethane solution obtained in the step (1), wherein the mass ratio of the polyurethane solution to the fine alumina powder is 133-145: 20-27, and uniformly stirring by using a high-speed stirrer to obtain a solid-liquid mixture;
(3) decompressing and defoaming the solid-liquid mixture obtained in the step (2) for 0.5-1.5 h, uniformly coating the mixture on a glass plate, immersing the glass plate into deionized water, and drying the mixture in a drying oven after the solid-liquid mixture is completely cured into a film;
(4) and (3) after the glass plate and the film are cooled, peeling the film, and then soaking the film in a mixed solution of a peony root extract, tea tree essential oil, butanediol and vitamin E for 3-6 h to obtain the alumina-based skin-moistening facial mask product.
2. The method for preparing an alumina-based skin moisturizing mask as claimed in claim 1, wherein in step (1), the polyurethane hydrogel particles are nonionic polyurethane hydrogel particles.
3. The preparation method of the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (1), the polyurethane particles are polyester-type thermoplastic polyurethane particles or/and polyether-type thermoplastic polyurethane particles, and the Shore hardness of the polyurethane particles is 60A-75A.
4. The method for preparing an alumina-based moisturizing mask as claimed in claim 1, wherein in step (1), the solvent is N, N-dimethylformamide or/and N, N-dimethylacetamide.
5. The method for preparing the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (2), the fine alumina powder is white powder with a fineness of 600-1200 mesh.
6. The method for preparing the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (2), the weight percentages of the thermoplastic polyurethane, the polyurethane hydrogel, the solvent and the fine alumina in the prepared solid-liquid mixture are as follows: 10.4-12.21% of thermoplastic polyurethane, 7.57-10.55% of polyurethane hydrogel, 62.12-68.4% of solvent and 13.9-15.32% of superfine alumina.
7. The method for preparing the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (3), the total thickness of the alumina-based moisturizing mask is controlled to be 0.42-0.66 mm by adjusting the thickness of the solid-liquid mixture coated on the glass plate.
8. The preparation method of the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (3), the drying temperature is 60-80 ℃ and the drying time is 3-5 h.
9. The preparation method of the alumina-based moisturizing mask as claimed in claim 1, wherein in the step (4), the weight percentages of the mixed solution of the peony root extract, the tea tree essential oil, the butanediol and the vitamin E are as follows: the tea tree essential oil comprises, by weight, 8-10% of a peony root extract, 3-5% of tea tree essential oil, 5-8% of butanediol, 6-11% of vitamin E and the balance deionized water.
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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