A composite material for controlling skin exudates and methods of making and using the same

Abstract

The present application relates to the cosmetic technical field, particularly to a kind of composite material for controlling skin secretion and its preparation method and application.The composite material includes substrate, zinc oxide, dipentaerythritol tri-polyhydroxy stearate and surface treatment agent.The substrate is synthesized with zinc oxide to grow a layer of zinc oxide crystal layer on the surface of substrate under special process conditions, then dipentaerythritol tri-polyhydroxy stearate is fully absorbed into powder to obtain new composite.The composite zinc oxide absorbs and flocculates sebum directionally, has good oil control effect, can effectively reduce the influence of skin secretion sebum on makeup, and keeps skin natural and lasting makeup.Dipentaerythritol tri-polyhydroxy stearate can absorb sweat due to its water-holding property, and makeup effect can be kept better in the case of sweating.

Description

Technical Field

[0001] This invention relates to the field of cosmetic technology, and in particular to a composite material for controlling skin secretions, its preparation method, and its application. Background Technology

[0002] As consumers demand longer-lasting makeup, especially in hot summer weather or during outdoor activities, makeup smudging due to oily skin and makeup meltdown caused by sweat have become key pain points. The base makeup market is experiencing a surge in demand for oil-control and sweat-resistant products. The fundamental goal is to enable products to maintain makeup integrity for a certain period of time, even under conditions of sebum and sweat production, delaying issues such as makeup melting and excessive shine.

[0003] CN114533581A discloses an oil-controlling composite material, obtained by high-pressure homogenization of a mixture; the mixture includes: 0.0001-6 parts by mass of fullerene; 1-50 parts by mass of hydroxyapatite; 0.1-30 parts by mass of zinc oxide; and 30-90 parts by mass of a base material; the base material is selected from at least one of synthetic fluorophlogopite, silica, alumina, and organosilicon powder. The provided oil-controlling composite material has the functions of selectively adsorbing sebum, flocculating sebum, and preventing sebum oxidation, forming a closed loop from selectively adsorbing sebum to flocculating sebum, and then to preventing sebum oxidation, thereby completely solving the impact of sebum on makeup. In addition, the provided oil-controlling composite material also has the effects of low cytotoxicity and reduced ultraviolet transmittance. Sebum is often produced by mixing with sweat, which affects both the maintenance of makeup and the contact and action of this type of product on sebum. This type of product has a very weak effect on adsorbing sweat. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a composite material for controlling skin secretions, its preparation method, and its application. The composite material provided by this invention can control skin secretions.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a composite material for controlling skin secretions, comprising the following components in parts by weight:

[0007] The substrate consists of 68-83 parts, zinc oxide 10-20 parts, pentaerythritol tri-polyhydroxystearate 5-10 parts, and surface treatment agent 2 parts.

[0008] Preferably, the components include the following parts by weight:

[0009] The substrate consists of 68 parts, zinc oxide 20 parts, dimeric pentaerythritol tri-polyhydroxystearate 10 parts, and surface treatment agent 2 parts.

[0010] Preferably, the substrate comprises silica and / or mica.

[0011] The present invention also provides a method for preparing the composite material described in the above technical solution, comprising the following steps:

[0012] 1) Mix the substrate with water and zinc nitrate, adjust the pH to 6.0~8.0, filter to obtain a precipitate, dry the precipitate and sinter it to obtain a mixture;

[0013] 2) The dimeric pentaerythritol tri-polyhydroxystearate is mixed with cyclopentamethoxysilane to obtain mixture 1. Mixture 1 is mixed with the mixture in step 1), allowed to stand, and dried to obtain a composite material.

[0014] 3) The surface treatment agent is mixed with cyclopentamethoxysiloxane to obtain mixture 2. Mixture 2 is mixed with the composite material in step 2), left to stand, and dried to obtain the composite material.

[0015] Preferably, in step 1), the mass ratio of the substrate to water and zinc nitrate is 100:400:1.

[0016] Preferably, in step 1), the pH value is adjusted using a sodium hydroxide solution with a concentration of 0.292 mol / L, and the sodium hydroxide solution is added at a dropping rate of 50 mL / min.

[0017] Preferably, the drying temperature in step 1) is 190°C and the time is 24 hours;

[0018] The sintering conditions include a temperature of 1200℃ and a time of 12h.

[0019] Preferably, in step 2), the mass ratio of dipolypentaerythritol tri-polyhydroxystearate to cyclopentamethoxydimethylsiloxane is 1:5;

[0020] The mass ratio of mixture 1 to the mixed material is 2:3;

[0021] The settling time is 24 hours;

[0022] The drying temperature is 190°C and the time is 24 hours.

[0023] Preferably, in step 3), the mass ratio of triethoxyoctylsiloxane to cyclopentamethoxysiloxane is 1:5;

[0024] The mass ratio of the mixture 2 to the composite material is 1:8;

[0025] The settling time is 24 hours;

[0026] The drying conditions include a temperature of 140°C and a time of 48 hours.

[0027] The present invention also provides the application of the composite material described in the above technical solution in the preparation of cosmetics for controlling skin secretions.

[0028] In this invention, a substrate is synthesized with zinc oxide, and a layer of zinc oxide crystals is uniformly grown on the surface of the substrate under special process conditions. Then, dimeric pentaerythritol tri-polyhydroxystearate is fully adsorbed into the powder to obtain a new composite. The composite zinc oxide directionally absorbs and flocculates sebum, resulting in excellent oil control and effectively reducing the impact of sebum secreted by the skin on makeup, allowing the skin to maintain a natural and long-lasting makeup look. The water-retaining properties of dimeric pentaerythritol tri-polyhydroxystearate can absorb sweat, allowing the makeup effect to be maintained better even when sweating.

[0029] The beneficial effects of this invention are:

[0030] The composite material provided by this invention can control skin secretions. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0032] Figure 1 When artificial human secretions are mixed with the composite powder of Example 1, solidification is very obvious.

[0033] Figure 2 The silicone oil was mixed with the composite powder of Example 1 without solidification;

[0034] Figure 3 It is a mixture of artificial human secretions and silica, zinc oxide and dimeric pentaerythritol tri-polyhydroxystearate, which has good fluidity and no obvious solidification. Detailed Implementation

[0035] This invention provides a composite material for controlling skin secretions, comprising the following components in parts by weight:

[0036] The composite material comprises 68-83 parts of a substrate, 10-20 parts of zinc oxide, 5-10 parts of dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts of a surface treatment agent. In this invention, the surface treatment agent preferably includes one or more of triethoxyoctylsilane, amino-terminated polydimethylsiloxane, and polydimethylsiloxane. In this invention, the dimeric pentaerythritol tri-polyhydroxystearate is sourced from: Manufacturer: The Nisshin OilliO Group, Ltd. Product model: SALACOS WO-6. In this invention, the composite material preferably comprises the following components in parts by weight: 68 parts of a substrate, 20 parts of zinc oxide, 10 parts of dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts of a surface treatment agent. In this invention, the substrate preferably includes silica and / or mica. In this invention, the mica is sourced from: Anhui Henghao Technology Co., Ltd. Product model: Matte sericite powder HS8306. Zinc oxide: Selectively solidifies sebum. The principle is that the Lewis acidic sites on the ZnO surface can undergo an addition reaction with the C=C double bonds of sebum, opening the double bonds and subsequently undergoing an ester exchange reaction to generate a cross-linked polyester structure, thus enhancing the degree of solidification. Dimeric pentaerythritol tri-polyhydroxystearate: Due to its water-retaining properties, it can absorb sweat. Triethoxyoctylsiloxane: Enhances skin affinity and hydrophobicity, improves the compatibility of the composite powder with common makeup ingredients such as pigments and film-forming agents, and thus has a positive impact on makeup effects.

[0037] The present invention also provides a method for preparing the composite material described in the above technical solution, comprising the following steps:

[0038] 1) Mix the substrate with water and zinc nitrate, adjust the pH to 6.0~8.0, filter to obtain a precipitate, dry the precipitate and sinter it to obtain a mixture;

[0039] 2) The dimeric pentaerythritol tri-polyhydroxystearate is mixed with cyclopentamethoxysilane to obtain mixture 1. Mixture 1 is mixed with the mixture in step 1), allowed to stand, and dried to obtain a composite material.

[0040] 3) The surface treatment agent is mixed with cyclopentamethoxysiloxane to obtain mixture 2. Mixture 2 is mixed with the composite material in step 2), left to stand, and dried to obtain the composite material.

[0041] This invention involves mixing the substrate with water and zinc nitrate, adjusting the pH to 6.0-8.0, filtering to obtain a precipitate, drying the precipitate, and then sintering it to obtain a mixture. In this invention, the preferred mass ratio of the substrate to water and zinc nitrate is 100:400:1. This invention preferably uses filtration at an 800-mesh screen, followed by rinsing three times to obtain the precipitate. This invention preferably uses a sodium hydroxide solution to adjust the pH under stirring; the preferred concentration of the sodium hydroxide solution is 0.292 mol / L, and the preferred pH adjustment rate is 50 mL / min. In this invention, the preferred drying temperature is 190°C, and the preferred drying time is 24 hours. In this invention,

[0042] The preferred sintering conditions include a temperature of 1200℃ and a time of 12 hours. After sintering, the material is preferably pulverized using a pulverizer and then passed through an 80-mesh sieve; the sieved material is a mixture. Through controlled conditions, this invention allows a uniform zinc oxide crystalline layer to grow on the surface of a selected substrate under specific process conditions, resulting in the mixture.

[0043] This invention involves mixing the dimeric pentaerythritol tri-polyhydroxystearate with cyclopentamethoxysilane to obtain mixture 1. Mixture 1 is then mixed with the prepared mixture, allowed to stand, and dried to obtain a composite material. In this invention, the preferred mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane is 1:5. In this invention, the preferred mass ratio of mixture 1 to the prepared mixture is 2:3. In this invention, the preferred standing time is 24 hours. In this invention, the preferred drying temperature is 190°C, and the preferred drying time is 24 hours. Preferably, after drying, the material is pulverized and passed through an 80-mesh sieve; the material passing through the sieve is the composite material. The dimeric pentaerythritol tri-polyhydroxystearate fully penetrates the zinc oxide layer and is adsorbed into the powder.

[0044] This invention involves mixing the surface treatment agent with cyclopentamethoxysiloxane to obtain mixture 2. Mixture 2 is then mixed with the composite material, allowed to stand, and dried to obtain the composite material. In this invention, the preferred mass ratio of the surface treatment agent to cyclopentamethoxysiloxane is 1:5. In this invention, the preferred mass ratio of mixture 2 to the composite material is 1:8. In this invention, the preferred standing time is 24 hours. In this invention, the preferred drying conditions include a temperature of 140°C and a time of 48 hours. In this invention, after drying, the material is preferably pulverized and passed through an 80-mesh sieve; the material passing through the sieve is the composite material. Triethoxyoctylsiloxane (surface treatment agent) is coated and cured to form a composite material with a substrate—zinc oxide—as the silicon framework, a special grease inside, and a highly compatible, skin-adhesive silicone oil as the outer layer.

[0045] The present invention also provides the application of the composite material described in the above technical solution in the preparation of cosmetics for controlling skin secretions.

[0046] To further illustrate the present invention, the following detailed description is provided in conjunction with embodiments, but these should not be construed as limiting the scope of protection of the present invention.

[0047] Example 1

[0048] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0049] 68 parts silica, 20 parts zinc oxide, 10 parts dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts triethoxyoctylsiloxane.

[0050] Preparation method:

[0051] (a) Synthesis process of silica and zinc oxide:

[0052] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0053] 2. Add Zn(NO3)2 to prepare a concentration of 0.146 mol / L; the mass ratio of silica to Zn(NO3)2 is 100:1;

[0054] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0055] 4. 800 mesh filter;

[0056] 5. Rinse with water 3 times;

[0057] 6. Dry in an oven at 190℃ for 24 hours;

[0058] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0059] 8. 15HP pulverizer for pulverizing;

[0060] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0061] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0062] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0063] 1. Add complex A to the mixing container.

[0064] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0065] 3.1 While stirring, add the prepared mixture from step 2. The mass ratio of step 1 to step 2 is 3:2;

[0066] 4. Let stand for 24 hours;

[0067] 5. Dry in an oven at 190℃ for 24 hours;

[0068] 6. 15HP pulverizer for pulverizing;

[0069] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0070] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0071] (III) Surface Treatment Process

[0072] 1. Add complex B to the mixing container.

[0073] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0074] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0075] 4. Let stand for 24 hours;

[0076] 5. Dry in an oven at 140℃ for 48 hours.

[0077] 6. 15HP pulverizer for pulverizing;

[0078] The material passing through the 70-80 mesh screening machine is a composite material.

[0079] Example 2

[0080] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0081] 68 parts mica, 20 parts zinc oxide, 10 parts dimeric pentaerythritol tri-polyhydroxystearate and 2 parts triethoxyoctylsiloxane.

[0082] Preparation method:

[0083] (I) Synthesis process of mica and zinc oxide:

[0084] 1. In a mixing container, add water and add mica while stirring at 400 rpm; the mass ratio of water to mica is 4:1.

[0085] 2. Add Zn(NO3)2 to prepare a concentration of 0.146 mol / L; the mass ratio of mica to Zn(NO3)2 is 100:1;

[0086] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0087] 4. 800 mesh filter;

[0088] 5. Rinse with water 3 times;

[0089] 6. Dry in an oven at 190℃ for 24 hours;

[0090] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0091] 8. 15HP pulverizer for pulverizing;

[0092] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0093] Objective: To obtain composite A by uniformly growing a zinc oxide crystalline layer on the surface of mica under specific process conditions on a selected substrate through condition control.

[0094] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0095] 1. Add complex A to the mixing container.

[0096] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0097] 3.1 While stirring, add the prepared mixture from step 2. The mass ratio of step 1 to step 2 is 3:2;

[0098] 4. Let stand for 24 hours;

[0099] 5. Dry in an oven at 190℃ for 24 hours;

[0100] 6. 15HP pulverizer for pulverizing;

[0101] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0102] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0103] (III) Surface Treatment Process

[0104] 1. Add complex B to the mixing container.

[0105] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0106] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0107] 4. Let stand for 24 hours;

[0108] 5. Dry in an oven at 140℃ for 48 hours.

[0109] 6. 15HP pulverizer for pulverizing;

[0110] The material passing through the 70-80 mesh screening machine is a composite material.

[0111] Example 3

[0112] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0113] 73 parts silica, 20 parts zinc oxide, 5 parts dimeric pentaerythritol tri-polyhydroxystearate and 2 parts triethoxyoctylsiloxane.

[0114] Preparation method:

[0115] (a) Synthesis process of silica and zinc oxide:

[0116] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0117] 2. Add Zn(NO3)2 to prepare a solution with a concentration of 0.146 mol / L; the mass ratio of silica to Zn(NO3)2 is 100:1.

[0118] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0119] 4. 800 mesh filter;

[0120] 5. Rinse with water 3 times;

[0121] 6. Dry in an oven at 190℃ for 24 hours;

[0122] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0123] 8. 15HP pulverizer for pulverizing;

[0124] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0125] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0126] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0127] 1. Add complex A to the mixing container.

[0128] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0129] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 3:1;

[0130] 4. Let stand for 24 hours;

[0131] 5. Dry in an oven at 190℃ for 24 hours;

[0132] 6. 15HP pulverizer for pulverizing;

[0133] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0134] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0135] (III) Surface Treatment Process

[0136] 1. Add complex B to the mixing container.

[0137] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0138] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0139] 4. Let stand for 24 hours;

[0140] 5. Dry in an oven at 140℃ for 48 hours.

[0141] 6. 15HP pulverizer for pulverizing;

[0142] The material passing through the 70-80 mesh screening machine is a composite material.

[0143] Example 4

[0144] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0145] 78 parts silica, 10 parts zinc oxide, 10 parts dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts triethoxyoctylsiloxane.

[0146] Preparation method:

[0147] (a) Synthesis process of silica and zinc oxide:

[0148] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0149] 2. Add Zn(NO3)2 to prepare a concentration of 0.073 mol / L; the mass ratio of silica to Zn(NO3)2 is 200:1;

[0150] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0151] 4. 800 mesh filter;

[0152] 5. Rinse with water 3 times;

[0153] 6. Dry in an oven at 190℃ for 24 hours;

[0154] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0155] 8. 15HP pulverizer for pulverizing;

[0156] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0157] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0158] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0159] 1. Add complex A to the mixing container.

[0160] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0161] 3.1 While stirring, add the prepared mixture from step 2. The mass ratio of step 1 to step 2 is 3:2;

[0162] 4. Let stand for 24 hours;

[0163] 5. Dry in an oven at 190℃ for 24 hours;

[0164] 6. 15HP pulverizer for pulverizing;

[0165] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0166] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0167] (III) Surface Treatment Process

[0168] 1. Add complex B to the mixing container.

[0169] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0170] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0171] 4. Let stand for 24 hours;

[0172] 5. Dry in an oven at 140℃ for 48 hours.

[0173] 6. 15HP pulverizer for pulverizing;

[0174] The material passing through the 70-80 mesh screening machine is a composite material.

[0175] Comparative Example 1

[0176] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0177] 70 parts silica, 20 parts zinc oxide and 10 parts dimeric pentaerythritol tri-polyhydroxystearate.

[0178] Preparation method: Simply mix evenly as usual.

[0179] Comparative Example 2

[0180] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0181] 76 parts silica, 20 parts zinc oxide, 2 parts dimeric pentaerythritol tri-polyhydroxystearate and 2 parts triethoxyoctylsiloxane.

[0182] Preparation method:

[0183] (a) Synthesis process of silica and zinc oxide:

[0184] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0185] 2. Add Zn(NO3)2 to prepare a concentration of 0.146 mol / L; the mass ratio of silica to Zn(NO3)2 is 100:1;

[0186] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0187] 4. 800 mesh filter;

[0188] 5. Rinse with water 3 times;

[0189] 6. Dry in an oven at 190℃ for 24 hours;

[0190] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0191] 8. 15HP pulverizer for pulverizing;

[0192] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0193] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0194] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0195] 1. Add complex A to the mixing container.

[0196] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0197] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 15:2;

[0198] 4. Let stand for 24 hours;

[0199] 5. Dry in an oven at 190℃ for 24 hours;

[0200] 6. 15HP pulverizer for pulverizing;

[0201] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0202] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0203] (III) Surface Treatment Process

[0204] 1. Add complex B to the mixing container.

[0205] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0206] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0207] 4. Let stand for 24 hours;

[0208] 5. Dry in an oven at 140℃ for 48 hours.

[0209] 6. 15HP pulverizer for pulverizing;

[0210] The material passing through the 70-80 mesh screening machine is a composite material.

[0211] Comparative Example 3

[0212] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0213] 63 parts silica, 20 parts zinc oxide, 15 parts dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts triethoxyoctylsiloxane.

[0214] Preparation method:

[0215] (a) Synthesis process of silica and zinc oxide:

[0216] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0217] 2. Add Zn(NO3)2 to prepare a solution with a concentration of 0.146 mol / L; the mass ratio of silica to Zn(NO3)2 is 100:1.

[0218] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0219] 4. 800 mesh filter;

[0220] 5. Rinse with water 3 times;

[0221] 6. Dry in an oven at 190℃ for 24 hours;

[0222] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0223] 8. 15HP pulverizer for pulverizing;

[0224] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0225] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0226] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0227] 1. Add complex A to the mixing container.

[0228] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0229] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 1:1;

[0230] 4. Let stand for 24 hours;

[0231] 5. Dry in an oven at 190℃ for 24 hours;

[0232] 6. 15HP pulverizer for pulverizing;

[0233] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0234] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0235] (III) Surface Treatment Process

[0236] 1. Add complex B to the mixing container.

[0237] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0238] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0239] 4. Let stand for 24 hours;

[0240] 5. Dry in an oven at 140℃ for 48 hours.

[0241] 6. 15HP pulverizer for pulverizing;

[0242] The material passing through the 70-80 mesh screening machine is a composite material.

[0243] Comparative Example 4

[0244] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0245] 83 parts silica, 5 parts zinc oxide, 10 parts dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts triethoxyoctylsiloxane.

[0246] Preparation method:

[0247] (a) Synthesis process of silica and zinc oxide:

[0248] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0249] 2. Add Zn(NO3)2 to prepare a solution with a concentration of 0.0365 mol / L; the mass ratio of silica to Zn(NO3)2 is 400:1.

[0250] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0251] 4. 800 mesh filter;

[0252] 5. Rinse with water 3 times;

[0253] 6. Dry in an oven at 190℃ for 24 hours;

[0254] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0255] 8. 15HP pulverizer for pulverizing;

[0256] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0257] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0258] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0259] 1. Add complex A to the mixing container.

[0260] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0261] 3.1 While stirring, add the prepared mixture from step 2. The mass ratio of step 1 to step 2 is 3:2;

[0262] 4. Let stand for 24 hours;

[0263] 5. Dry in an oven at 190℃ for 24 hours;

[0264] 6. 15HP pulverizer for pulverizing;

[0265] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0266] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0267] (III) Surface Treatment Process

[0268] 1. Add complex B to the mixing container.

[0269] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0270] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0271] 4. Let stand for 24 hours;

[0272] 5. Dry in an oven at 140℃ for 48 hours.

[0273] 6. 15HP pulverizer for pulverizing;

[0274] The material passing through the 70-80 mesh screening machine is a composite material.

[0275] Comparative Example 5

[0276] A composite material for controlling skin secretions, comprising the following components in parts by weight:

[0277] 63 parts silica, 25 parts zinc oxide, 10 parts dimeric pentaerythritol tri-polyhydroxystearate, and 2 parts triethoxyoctylsiloxane.

[0278] Preparation method:

[0279] (a) Synthesis process of silica and zinc oxide:

[0280] 1. In a mixing container, add water and add silica while stirring at 400 rpm; the mass ratio of water to silica is 4:1.

[0281] 2. Add Zn(NO3)2 to prepare a solution with a concentration of 0.1825 mol / L; the mass ratio of silica to Zn(NO3)2 is approximately 80:1.

[0282] 3. Prepare a 0.292 mol / L NaOH solution by adding it to the container at a rate of 50 ml / min while stirring, until the pH reaches 7.0.

[0283] 4. 800 mesh filter;

[0284] 5. Rinse with water 3 times;

[0285] 6. Dry in an oven at 190℃ for 24 hours;

[0286] 7. Sintering in a muffle furnace at 1200℃ for 12 hours;

[0287] 8. 15HP pulverizer for pulverizing;

[0288] 9. Use an 80-mesh sieve to screen the material and obtain the undersize.

[0289] Objective: To obtain composite A by uniformly growing a zinc oxide crystal layer on a selected substrate under specific process conditions through controlled conditions.

[0290] (II) Pentaerythritol tri-polyhydroxystearate permeation adsorption process

[0291] 1. Add complex A to the mixing container.

[0292] 2. Dimeric pentaerythritol tri-polyhydroxystearate was added to cyclopentamethoxysilane and mixed evenly. The mass ratio of dimeric pentaerythritol tri-polyhydroxystearate to cyclopentamethoxysilane was 1:5.

[0293] 3.1 While stirring, add the prepared mixture from step 2. The mass ratio of step 1 to step 2 is 3:2;

[0294] 4. Let stand for 24 hours;

[0295] 5. Dry in an oven at 190℃ for 24 hours;

[0296] 6. 15HP pulverizer for pulverizing;

[0297] The material is screened using a 7-80 mesh sieve to obtain the undersize material.

[0298] Objective: To enable pentaerythritol tri-polyhydroxystearate to fully penetrate into the zinc oxide layer, adsorb into the powder interior, and obtain complex B.

[0299] (III) Surface Treatment Process

[0300] 1. Add complex B to the mixing container.

[0301] 2. Triethoxyoctylsiloxane is added to cyclopentapolydimethylsiloxane and mixed evenly. The ratio of triethoxyoctylsiloxane to cyclopentapolydimethylsiloxane is 1:5.

[0302] 3.1 While stirring, add the prepared mixture 2. The mass ratio of 1 to 2 is 8:1;

[0303] 4. Let stand for 24 hours;

[0304] 5. Dry in an oven at 140℃ for 48 hours.

[0305] 6. 15HP pulverizer for pulverizing;

[0306] The material passing through the 70-80 mesh screening machine is a composite material.

[0307] (I) Testing Method: Weigh human secretions (sebum and sweat in a mass ratio of 5:1) and composite powder in a mass ratio of 10:1. After thorough mixing, use a viscometer to test the viscosity. Viscometer brand and model: Brookfield DV2T-RV; rotor: No. 6 rotor; rotation speed: 10 rpm. The higher the viscosity, the stronger the solidification, indicating a stronger ability to adsorb human secretions (viscosity below 30,000 cp indicates fluidity and can be considered as poor solidification). Sebum: Dongguan Chuangfeng Automation Technology Co., Ltd., model: XH-0002A; Sweat: Dongguan Chuangfeng Automation Technology Co., Ltd., model: 010-0008.

[0308] Table 1 Viscosity results of composite materials

[0309]

[0310] (II) Testing methods:

[0311] Oil control and sweat resistance tests of composite powders:

[0312] Test method: Take 10g of artificial human secretions (a mixture of sebum and sweat) or silicone oil into a beaker, add 2g of the composite material, and observe the results. Figures 1-3 .

[0313] Figure 1 The result of mixing artificial human secretions with the composite material prepared in Example 1 showed obvious solidification.

[0314] Figure 2 The result of mixing silicone oil with the composite material prepared in Example 1 showed that it did not solidify.

[0315] Figure 3 The result of mixing artificial human secretions with the composite material prepared in Comparative Example 1 showed no obvious solidification.

[0316] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A composite material for controlling skin secretions, characterized in that, The components include the following parts by weight: The substrate consists of 68 to 83 parts, zinc oxide 10 to 20 parts, dimeric pentaerythritol tri-polyhydroxystearate 5 to 10 parts, and surface treatment agent 2 parts. The substrate includes silica and / or mica; The surface treatment agent includes one or more of triethoxyoctylsilane, amino-terminated polydimethylsiloxane, and polydimethylsiloxane; The method for preparing the composite material includes the following steps: 1) Mix the substrate with water and zinc nitrate, adjust the pH to 6.0 ~ 8.0, filter to obtain a precipitate, dry the precipitate and sinter it to obtain a mixture; 2) The dimeric pentaerythritol tri-polyhydroxystearate is mixed with cyclopentamethoxysilane to obtain mixture 1. Mixture 1 is mixed with the mixture in step 1), allowed to stand, and dried to obtain a composite material. 3) The surface treatment agent is mixed with cyclopentamethoxysiloxane to obtain mixture 2. Mixture 2 is then mixed with the composite material obtained in step 2), allowed to stand, and dried to obtain the composite material. Step 1) The mass ratio of the substrate, water, and zinc nitrate is 100:400:1; Step 1) The drying temperature is 190℃ and the time is 24 hours; The sintering conditions include: a temperature of 1200℃ and a time of 12h; In step 2), the mass ratio of dipolypentaerythritol tri-polyhydroxystearate to cyclopentamethoxydimethylsiloxane is 1:5; The mass ratio of mixture 1 to the mixed material is 2:3; The settling time is 24 hours; Step 2) The drying temperature is 190℃ and the time is 24 hours; Step 3) The mass ratio of the surface treatment agent to cyclopentamethoxysiloxane is 1:5; The mass ratio of the mixture 2 to the composite material is 1:8; The settling time is 24 hours; Step 3) The drying conditions include: a temperature of 140°C and a time of 48 hours.

2. The composite material according to claim 1, characterized in that, The components include the following parts by weight: The substrate consists of 68 parts, zinc oxide 20 parts, dimeric pentaerythritol tri-polyhydroxystearate 10 parts, and surface treatment agent 2 parts.

3. A method for preparing the composite material according to claim 1 or 2, characterized in that, Includes the following steps: 1) Mix the substrate with water and zinc nitrate, adjust the pH to 6.0 ~ 8.0, filter to obtain a precipitate, dry the precipitate and sinter it to obtain a mixture; 2) The dimeric pentaerythritol tri-polyhydroxystearate is mixed with cyclopentamethoxysilane to obtain mixture 1. Mixture 1 is mixed with the mixture in step 1), allowed to stand, and dried to obtain a composite material. 3) The surface treatment agent is mixed with cyclopentamethoxysiloxane to obtain mixture 2. Mixture 2 is then mixed with the composite material obtained in step 2), allowed to stand, and dried to obtain the composite material. Step 1) The mass ratio of the substrate, water, and zinc nitrate is 100:400:1; Step 1) The drying temperature is 190℃ and the time is 24 hours; The sintering conditions include: a temperature of 1200℃ and a time of 12h; In step 2), the mass ratio of dipolypentaerythritol tri-polyhydroxystearate to cyclopentamethoxydimethylsiloxane is 1:5; The mass ratio of mixture 1 to the mixed material is 2:3; The settling time is 24 hours; Step 2) The drying temperature is 190℃ and the time is 24 hours; Step 3) The mass ratio of the surface treatment agent to cyclopentamethoxysiloxane is 1:5; The mass ratio of the mixture 2 to the composite material is 1:8; The settling time is 24 hours; Step 3) The drying conditions include: a temperature of 140°C and a time of 48 hours.

4. The preparation method according to claim 3, characterized in that, Step 1) Adjust the pH value using a sodium hydroxide solution with a concentration of 0.292 mol / L, and adjust the pH value by adding the sodium hydroxide solution at a dropping rate of 50 mL / min.

5. The use of the composite material according to claim 1 or 2 in the preparation of cosmetics for controlling skin secretions.

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