CN111616983B

CN111616983B - Tear-off mask containing aerogel and preparation method thereof

Info

Publication number: CN111616983B
Application number: CN202010327623.5A
Authority: CN
Inventors: 张尚权
Original assignee: Anhui Keang Nano Technology Co ltd
Current assignee: Anhui Keang Nano Technology Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2023-06-27
Anticipated expiration: 2040-04-23
Also published as: CN111616983A

Abstract

The invention discloses a tear-off mask containing aerogel, which relates to the technical field of skin care products and is mainly prepared from the following raw materials in parts by weight: 50 to 70 parts of deionized water, 10 to 30 parts of polyvinyl alcohol, 0.5 to 5 parts of titanium dioxide, 2 to 8 parts of ethanol, 1 to 6 parts of glycerin, 0.5 to 3 parts of butanediol, 1 to 6 parts of polyethylene glycol, 0.1 to 1 part of methyl parahydroxybenzoate, 0.5 to 5 parts of aerogel and 1 to 8 parts of isopropyl myristate. The invention has the beneficial effects that: the prepared tearing type facial mask is milky white, has obvious degreasing and slipping effects, and has excellent moisturizing performance, and the tearing property meets the requirement of use.

Description

Tear-off mask containing aerogel and preparation method thereof

Technical Field

The invention relates to the technical field of skin care products, in particular to a tear-off mask containing aerogel and a preparation method thereof.

Background

Along with the improvement of living standard and the upgrading of consumption concept, people are more and more concerned about the quality of life, on the premise that the clothing and food residence is satisfied, the pursuit of healthy and beautiful fashion life is started, the demands of consumers on beauty and skin care are continuously and rapidly increased, the market prospect is wide, and the beauty and skin care industry is widely concerned by people.

The commercial facial mask can adsorb grease and dirt on the surface of skin and in hair follicles, so that pores are unobstructed, the skin wetting sense is enhanced, and the excretion of sebum and the absorption of nutrient components are facilitated. According to the different cleaning modes, the facial mask can be divided into a tearing type facial mask and a washing type facial mask, wherein the tearing type facial mask is fully contacted and adhered with skin by utilizing the facial mask, and when the facial mask is torn off the skin, blackheads, aged cutin, grease, mites and other dirt on the skin are torn off by means of the adsorption capacity of the tearing type facial mask, so that the tearing type facial mask has a very strong cleaning effect.

The traditional tearing type facial mask often selects organic wax as an effective adsorption component of skin grease and sweat, and can control the oil of the skin, but the organic wax can give people dry and rough feeling in the use process, and the stability is insufficient (especially in high concentration) due to the growth of crystals. The fatty acid can also be used as an oil control component of a nursing mask, and different from the organic wax, the fatty acid can control oil and simultaneously generate a smooth feel to skin, but the fatty acid has good oil control effect only at a higher content, so that the product stability and the formula design space are limited. Therefore, the development of the oil control agent with low addition amount and stable property and providing smooth feeling has practical value.

Aerogel is a porous, sponge-like structure of light, high-adsorption material, and the aerogel is a beneficial attempt as an oil control and slipping component of cosmetics: patent CN103327955A discloses a composition of hydrophobic silica aerogel particles and silicone oil for moisturizing creams and ointments and the like, the specific surface area of the aerogel involved is 500-1500m ² And/g, wherein the average particle size is 1-1500 mu m, the silicone oil is compounded by linear silicone oil with different viscosities, and the cream-like cosmetics such as moisturizing cream, cream and the like prepared by the mixture of the silica aerogel particles and the linear silicone oil have oil control and soft light properties. Patent CN104203198A discloses that silica aerogel and clay as a composite can be added to cream-like cosmetics such as moisturizing creams, rinse-off masks, etc., to enable uniform and pleasant application without pilling during application, drying or use involving cleaning products.

However, the moisture-keeping performance of the aerogel is often not compatible with the oil control and the smoothness, because the used hydrophobic aerogel has a strong repulsive action on moisture, and the tear-off mask often contains a large amount of moisture, so that the tear-off mask with the oil control, the smoothness and the moisture-keeping performance is highly needed.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the tear-type facial mask containing aerogel, which has the oil control, slipping and moisturizing performances.

The invention solves the technical problems by the following technical means:

the tearing type mask containing aerogel is mainly prepared from the following raw materials in parts by weight: 50 to 70 parts of deionized water, 10 to 30 parts of polyvinyl alcohol, 0.5 to 5 parts of titanium dioxide, 2 to 8 parts of ethanol, 1 to 6 parts of glycerin, 0.5 to 3 parts of butanediol, 1 to 6 parts of polyethylene glycol, 0.1 to 1 part of methyl parahydroxybenzoate, 0.5 to 5 parts of aerogel and 1 to 8 parts of isopropyl myristate.

The beneficial effects are that: the raw materials in the invention are cheap and easy to obtain, and the tearing type facial mask prepared from the raw materials in parts by weight is milky white, has obvious degreasing and slipping effects, and has excellent moisturizing performance, and the tearing property meets the requirement of use.

Preferably, the aerogel is a hydrophobic aerogel.

Preferably, the aerogel is an inorganic oxide aerogel, a carbide aerogel, a graphene aerogel or a chalcogenide aerogel.

Preferably, the aerogel is a nanosilica aerogel.

Preferably, the preparation method of the tear-off mask containing aerogel comprises the following steps:

(1) Mixing and stirring deionized water, polyvinyl alcohol and titanium dioxide in parts by weight, and heating to 60-90 ℃ to obtain a dispersion liquid A;

(2) Mixing and stirring the ethanol, the glycerol, the butanediol, the polyethylene glycol and the methylparaben in parts by weight to obtain a mixed solution B;

(3) Dispersing the aerogel in the weight part in isopropyl myristate to obtain a dispersion liquid C;

(4) And (3) adding the dispersion liquid A and the mixed solution B prepared in the step (1) into the dispersion liquid C, stirring for 6-72 h at 60-90 ℃, and cooling to obtain gel-like tear-off mask containing aerogel.

Preferably, deionized water, polyvinyl alcohol and titanium dioxide in the step (1) are heated in a water bath at 65 ℃ to obtain a dispersion liquid A.

Preferably, the stirring rate in the step (4) is 60-120rpm.

Preferably, the heating time in the step (4) is 24 hours.

Preferably, in the step (4), the dispersion liquid A, the mixed solution B and the dispersion liquid C are mixed and stirred under water bath heating at 65 ℃.

The invention aims to provide a preparation method of a tear-off mask containing aerogel.

The invention solves the technical problems by the following technical means:

a preparation method of a tearing type facial mask containing aerogel comprises the following steps:

(4) And (3) adding the prepared dispersion liquid A and the mixed solution B into the dispersion liquid C prepared in the step (3), stirring for 6-72 h at 65-90 ℃, and cooling to obtain gel-like tear-off mask containing aerogel.

The beneficial effects are that: the polyvinyl alcohol is used as a film forming agent and has dispersion stabilizing effect, and deionized water, polyvinyl alcohol and titanium dioxide are mixed and stirred for dissolving the polyvinyl alcohol and dispersing the titanium dioxide used as an ultraviolet resistant agent.

Glycerol, butanediol and polyethylene glycol are used as wetting agents, ethanol is used as a solvent of the wetting agents, and methyl parahydroxybenzoate contains a phenolic hydroxyl structure with excellent sterilization performance.

The aerogel is hydrophobic aerogel, and has poor dispersion in hydrophilic alcohols, so substances such as hydrocarbon or esters and the like are selected as dispersion media: isopropyl myristate is widely applied to cosmetics, can play a role in moisturizing and nourishing skin, can be used as a penetrating agent to contact hair follicles in the cortex and penetrate deep into the cortex, and simultaneously brings active ingredients in the cosmetics.

The tearing type facial mask prepared from the raw materials in parts by weight is milky white, has obvious degreasing and slipping effects, and has excellent moisturizing performance, and the tearing property meets the requirement of use.

The aerogel is dispersed in isopropyl myristate in advance in the preparation process, so that the water retention performance of the tearing type mask can be improved, and the friction coefficient of the tearing type mask can be reduced.

Preferably, the aerogel is a hydrophobic aerogel.

Preferably, the aerogel is a nanosilica aerogel.

Preferably, the stirring rate in the step (4) is 60-120rpm.

Preferably, the heating and stirring time in the step (4) is 24 hours.

The invention has the advantages that: the raw materials in the invention are cheap and easy to obtain, and the tearing type facial mask prepared from the raw materials in parts by weight is milky white, has obvious degreasing and slipping effects, and has excellent moisturizing performance, and the tearing property meets the requirement of use.

The polyvinyl alcohol is used as a film forming agent and has dispersion stabilizing effect, and deionized water, polyvinyl alcohol and titanium dioxide are mixed and stirred for dissolving the polyvinyl alcohol and dispersing the titanium dioxide used as an ultraviolet resistant agent.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The test materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.

Those of skill in the art, without any particular mention of the techniques or conditions, may follow the techniques or conditions described in the literature in this field or follow the product specifications.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

The aerogels used in the examples are all silica aerogels disclosed in patent CN109650396 a.

For polyvinyl alcohol, the polyvinyl alcohol used in the present invention is polyvinyl alcohol of different alcoholysis degrees or different viscosities/molecular weights, and the polyvinyl alcohol used in each example of the present invention is polyvinyl alcohol of 75 to 99mole% alcoholysis degrees or a viscosity range of 4.5 to 110mpa·s.

For polyethylene glycol, the polyethylene glycol used in the examples of the present invention is polyethylene glycol-6 (polymerization degree n=6), polyvinyl alcohol-32 (polymerization degree n=32), or a mixture of polyethylene glycol-6 and polyvinyl alcohol-32 in any ratio.

Table 1 shows the weight portions and the effects of the raw materials

Example 1

The tearing type mask containing aerogel is mainly prepared from the following raw materials in parts by weight:

the preparation method comprises the following steps:

(1) Mixing and stirring deionized water, polyvinyl alcohol and titanium dioxide in parts by weight, and heating to 65 ℃ to obtain a dispersion liquid A;

(4) And (3) adding the dispersion liquid A prepared in the step (1) and the mixed solution B prepared in the step (2) into the dispersion liquid C prepared in the step (3), stirring for 24 hours at 65 ℃ and 60rpm, and cooling to obtain gel-like tear-off mask containing aerogel, wherein the appearance is milky.

Example 2

the preparation method comprises the following steps:

(4) And (3) adding the dispersion liquid A prepared in the step (1) and the mixed solution B prepared in the step (2) into the dispersion liquid C prepared in the step (3), stirring for 24 hours at 65 ℃ and 60rpm, cooling, and obtaining gel-like tearing type mask containing aerogel, wherein the appearance of the prepared mask is milky.

Example 3

the preparation method comprises the following steps:

Example 4

the preparation method comprises the following steps:

Example 5

the preparation method comprises the following steps:

(4) And (3) adding the dispersion liquid A prepared in the step (1) and the mixed solution B prepared in the step (2) into the dispersion liquid C prepared in the step (3), stirring for 24 hours at 65 ℃ and 120rpm, cooling, and obtaining gel-like tear-off mask containing aerogel, wherein the appearance of the prepared mask is milky.

Example 6

the preparation method comprises the following steps:

(4) And (3) adding the dispersion liquid A prepared in the step (1) and the mixed solution B prepared in the step (2) into the dispersion liquid C prepared in the step (3), stirring for 6 hours at 90 ℃ and 60rpm, cooling, and obtaining gel-like tear-off mask containing aerogel, wherein the appearance of the prepared mask is milky.

Example 7

the preparation method comprises the following steps:

Comparative example 1

The tearing type mask is mainly prepared from the following raw materials in parts by weight:

the preparation method comprises the following steps:

(3) And (3) adding isopropyl myristate into the mixed solution A prepared in the step (1) and the mixed solution B prepared in the step (2), stirring for 24 hours at 65 ℃ and 60pm, cooling, and forming a gel, namely tearing the mask, wherein the prepared mask is milky in appearance.

Comparative example 2

the preparation method comprises the following steps:

(2) Mixing and stirring the ethanol, the glycerol, the butanediol, the polyethylene glycol, the methyl parahydroxybenzoate, the aerogel and the isopropyl myristate in parts by weight to obtain a mixed solution B;

(3) And (3) stirring the dispersion liquid A prepared in the step (1) and the mixed solution B prepared in the step (2) for 24 hours at 65 ℃ and 60rpm, and cooling to obtain gel-like, namely the tear-off mask containing aerogel, wherein the prepared mask is milky in appearance.

Comparative example 3

the preparation method comprises the following steps:

(2) Mixing and stirring the ethanol, the glycerol, the butanediol, the polyethylene glycol, the methyl parahydroxybenzoate and the aerogel in parts by weight to obtain a dispersion liquid B;

(3) And (3) stirring the dispersion liquid A prepared in the step (1) and the dispersion liquid B prepared in the step (2) for 24 hours at 65 ℃ and 60rpm, and cooling to obtain gel-like, namely the tear-off mask containing aerogel, wherein the appearance of the prepared mask is milky.

The performance of the tear-off masks prepared in examples 1 to 7 and comparative examples 1 to 3 was tested:

and (3) water retention test: for the tear-type mask, the quality of water retention capacity directly influences the use body feeling of a customer, and is also related to effective application of active ingredients, a centrifugal experiment is designed, the water retention performance of the tear-type mask is simulated according to the weight retention rate after centrifugation, the specific operation is that each experimental group mask is uniformly smeared with the thickness of about 0.5mm on a glass sheet, naturally dried to form a film after 15min, then cut into small sheets of 30mm multiplied by 30mm, immersed in deionized water at normal temperature for 1min to saturate, the weight M1 is weighed, then the mask is placed into a plastic centrifuge tube, the rotating speed of the centrifuge is set to 400rpm, the time is set to 30s, 150s and 500s respectively, the mask is taken out from the centrifuge tube and weighed again to M2, samples of each experimental group are tested for 5 times to obtain an average value, the weight retention rate W1 is calculated according to a formula W1=M2/M1 multiplied by 100%, and the corresponding weight retention rate data of each experimental group mask under different centrifugal times are shown in Table 2.

Oil absorption test: uniformly coating the mask of each experimental group on a glass sheet to a thickness of about 0.5mm, naturally drying the glass sheet for 15min to form a film, cutting the film into small pieces with a thickness of 100mm multiplied by 100mm, weighing the weight M3, immersing the mask pieces into corn oil and 3# white oil respectively by using tweezers, taking out the mask pieces after 15min, wiping off superfluous grease on the surfaces, weighing the weight M4, and calculating the oil absorption rate W2 according to a formula W2= (M4-M3)/M3X100%, wherein the oil absorption rate data of each experimental group mask in corn oil and 3# white oil are shown in Table 3.

Friction coefficient test: the method is used for representing the roughness of the surface of the tearing type facial mask, the prepared tearing type facial mask is uniformly smeared on a substrate of a horizontal test bed to be about 0.5mm thick, the size is not less than 80mm multiplied by 200mm, the film is naturally dried to form a film after 15min, the film is attached to a sliding block to rub against the substrate, and the detection is carried out by referring to GB/T10006-1988 plastic film and sheet friction coefficient measuring method, and the dynamic friction coefficient and static friction coefficient data are shown in Table 4.

Human trial experiment: the results of the human facial skin trial of the tear-off mask prepared in the above examples and comparative examples are shown in table 5, each group of examples and comparative examples is used for pasting five fixed volunteers, each volunteer face is smeared for 15min and then torn off after the mask is formed into a film, subjective scores are given to the trial feeling (moisturizing feeling 40, rough feeling 30 and greasy feeling 20) of the domestic commercial tear-off mask, wherein the larger the number is the stronger the sense of the tear-off mask, the higher the moisturizing feeling is, the better the overall performance of the tear-off mask with weaker rough feeling and greasy feeling is, the comprehensive score is introduced for quantitatively evaluating the overall performance of the mask, the calculation formula is that the comprehensive score = moisturizing feeling- (rough feeling+greasy feeling) ×0.8, and the higher the overall use performance of the domestic commercial tear-off mask is better the comprehensive score of 0; to ensure that the variables of each set of examples and comparative examples were controlled, the test order of each example and comparative example was random, and no other cosmetic product was applied to the face in any form by each volunteer during the test.

Test results:

table 2 shows the weight retention rate of the mask at different centrifugation times

As can be seen from the water retention test results in Table 2, as the weight fraction of the aerogel increases, the corresponding weight retention rate of the mask at different centrifugation times increases, and the water retention performance is better than that of the domestic market tear-off mask; it can be seen from the combination of example 2, example 5 and example 6 that the increase of temperature and rotation speed in the range of 60rpm to 120rpm at 65 ℃ to 90 ℃ has no significant effect on the water retention performance; it can be seen from the combination of example 2, example 4 and comparative example 3 that the difference in water retention properties is not large between 2 parts isopropyl myristate and 6 parts isopropyl myristate, but when no isopropyl myristate is used to disperse the aerogel, the water retention properties of the tear-off mask are greatly reduced, and from comparative example 1, the water retention properties are also greatly reduced when no aerogel is added, and from the combination of example 4 and comparative example 2, it can be seen that the water retention properties are also difficult to ensure if the aerogel is not pre-dispersed in isopropyl myristate.

Table 3 shows the oil absorption of the mask in corn oil and 3# white oil

As can be seen from Table 3, the tear-off mask prepared by the invention has good oil absorption capacity, compared with the tear-off mask sold in China, the oil absorption capacity is obviously improved, the oil absorption capacity is positively correlated with the content of aerogel, and by combining the embodiment 2, the embodiment 5 and the embodiment 6, the oil absorption capacity of increasing the temperature within the range of 65-90 ℃ and 60-120rpm is improved, but the oil absorption capacity is slightly reduced along with the improvement of the stirring rate, because the porous structure of the aerogel is damaged under higher shearing, the oil fixing capacity of the aerogel is influenced, the oil absorption capacity of the tear-off mask is particularly obvious in experiments for absorbing high-viscosity corn oil, and the oil absorption capacity of the tear-off mask is positively correlated with the content of isopropyl myristate from other embodiments and comparative examples.

Table 4 shows the dynamic and static coefficients of friction of the mask

	Coefficient of dynamic friction	Coefficient of static friction
			Example 1	0.23	0.30
Example 2	0.25	0.31
			Example 3	0.37	0.42
Example 4	0.35	0.44
			Example 5	0.24	0.34
Example 6	0.28	0.37
			Example 7	0.33	0.43
Comparative example 1	0.31	0.38
			Comparative example 2	0.42	0.52
Comparative example 3	0.45	0.56
			Domestic market tear-off facial mask	0.28	0.36

As can be seen from table 4, the tear-off mask with low aerogel content (0.5% -2% by weight) has a lower friction coefficient than the tear-off mask sold in the home-made market, and the friction coefficient increases significantly with increasing aerogel content (comparative example 3,5% by weight); as can be seen from the combination of example 2, example 5 and example 6, increasing the rotation speed within the range of 60rpm to 120rpm at 65 ℃ to 90 ℃ has no significant effect on the friction coefficient of the tear-off mask, and increasing the temperature friction coefficient slightly decreases; as can be seen from a combination of example 2, example 4 and comparative example 3, isopropyl myristate significantly affects the coefficient of friction of the tear-off mask: the higher the content, the smaller the friction coefficient of the tear-off mask, the more the friction coefficient is increased by removing the aerogel component from comparative example 1, and the dynamic friction coefficient of the tear-off mask is positively correlated with the content of isopropyl myristate from other examples and comparative examples, and the friction coefficient of the tear-off mask is increased by combining example 4 and comparative example 2 if the aerogel is not pre-dispersed in isopropyl myristate.

Table 5 shows the results of human facial skin test of the mask

	Moisturizing feel	Fat feel	Feeling of roughness	Comprehensive scoring
					Example 1	41	19	18	11.4
Example 2	48	7	23	24.0
					Example 3	50	4	34	19.6
Example 4	42	6	27	15.6
					Example 5	50	12	24	21.2
Example 6	50	7	28	22.0
					Example 7	35	10	30	3.0
Comparative example 1	35	48	32	-29.0
					Comparative example 2	37	15	45	-11.0
Comparative example 3	30	15	48	-20.4
					Domestic market tear-off facial mask	40	20	30	0

As can be seen from Table 5, the overall performance of the tear-off mask of each example is better than that of the tear-off mask sold in China, the overall performance of the tear-off mask of each comparative example is worse than that of the tear-off mask sold in China, the tear-off mask obtained in example 2 has the best overall performance, and the tear-off mask containing aerogel prepared by the invention has obvious degreasing and slipping effects and also has excellent moisturizing performance.

Claims

1. The utility model provides a tear formula facial mask that contains aerogel which characterized in that: the material is mainly prepared from the following raw materials in parts by weight: 50-70 parts of deionized water, 10-30 parts of polyvinyl alcohol, 0.5-5 parts of titanium dioxide, 2-8 parts of ethanol, 1-6 parts of glycerin, 0.5-3 parts of butanediol, 1-6 parts of polyethylene glycol, 0.1-1 part of methyl parahydroxybenzoate, 0.5-5 parts of aerogel and 1-8 parts of isopropyl myristate, wherein the aerogel is silicon dioxide aerogel disclosed in patent CN 109650396A;

the preparation method of the tearing type facial mask containing aerogel comprises the following steps:

(4) And (3) adding the dispersion liquid A and the mixed solution B prepared in the step (1) into the dispersion liquid C, stirring for 6-72 h at 60-90 ℃, and cooling to be gel-like, thus obtaining the tear-off mask containing aerogel.

2. The aerogel containing tear-off mask of claim 1, wherein: and (3) in the step (1), deionized water, polyvinyl alcohol and titanium dioxide are heated in a water bath at 65 ℃ to obtain a dispersion liquid A.

3. The aerogel containing tear-off mask of claim 1, wherein: the stirring speed in the step (4) is 60-120rpm.

4. A method of making the aerogel containing tear-open mask of any one of claims 1-3, wherein: the method comprises the following steps:

(4) And (3) adding the prepared dispersion liquid A and the mixed solution B into the dispersion liquid C prepared in the step (3), stirring for 6-72 h at 60-90 ℃, and cooling to be gel-like, thus obtaining the tear-off mask containing aerogel.

5. The method for preparing an aerogel-containing tear-off mask according to claim 4, wherein: and (3) in the step (1), deionized water, polyvinyl alcohol and titanium dioxide are heated in a water bath at 65 ℃ to obtain a dispersion liquid A.

6. The method for preparing an aerogel-containing tear-off mask according to claim 4, wherein: and (3) mixing the dispersion liquid A, the mixed solution B and the dispersion liquid C in the step (4), and stirring under the water bath heating at 65 ℃.

7. The method for preparing an aerogel-containing tear-off mask according to claim 4, wherein: the stirring speed in the step (4) is 60-120rpm.