156 results about "Sunscreen Effect" patented technology

The present invention belongs to the field of cosmetics detection, and discloses a method for evaluating the sun protection function of cosmetics and cosmetic raw materials and its application. This evaluation method uses a non-contact drug delivery device to test the sun protection effect of the test samples, and the test samples are finished cosmetics or diluted cosmetic raw materials; the tests include evaluating the in vitro sun protection efficacy by skin cells, evaluating the in vivo sun protection efficacy by the zebrafish embryo model, and result evaluation. This method evaluates the anti-aging effect of sun protection through the expression of β-galactosidase and / or the secretion of collagen in human dermal fibroblasts, and evaluates the sunburn prevention effect through the survival rate of human keratinocytes, DNA damage, or the secretion of inflammatory factors and the lethal / teratogenic conditions of zebrafish embryos, realizing multi-level and all-round evaluation of the sun protection efficacy. The method provided by the present invention is applicable to the evaluation of the sun protection function of various sun protection products, has accuracy and practicability, and provides an important technical basis for the research and development, quality control, and performance optimization of sun protection cosmetics.

The invention belongs to the technical field of cosmetics, and particularly relates to a lipidosome composite microemulsion sun-screening agent, a preparation method thereof and application of the lipidosome composite microemulsion sun-screening agent in cosmetics. According to the invention, by selecting specific chemical sun-screening agents for matching, full-wave-band ultraviolet protection is realized, and the sun-screening effect is improved; a specific solid lipid matrix is selected, a chemical sun-screening agent is dispersed in a lipid bilayer by using a coating technology, irritation caused by direct contact with skin is reduced, meanwhile, release of the sun-screening agent is delayed, long-acting sun-screening and light stability are improved, and a product formed by combining with a specific preparation method is smaller in particle size, more uniform in component distribution and higher in stability. Therefore, a uniform film layer is formed on the surface of the skin and is tightly attached to the skin, penetration of ultraviolet rays is reduced, and the skin feeling light effect and the film-forming property at high temperature are improved. The sun-screening agent disclosed by the invention has the advantages of efficient ultraviolet protection, excellent stability and good skin feeling, and a new technical scheme is provided for the field of sun-screening cosmetics.

The invention discloses a composite sunscreen composition with excellent film-forming property and sunscreen stability as well as a preparation method and application thereof, and belongs to the technical field of daily chemicals. The composite sunscreen composition is prepared from inulin lauryl carbamate, bis (lauramide glutamine) lysine sodium, hydroxypropyl trimethyl ammonium chloride hyaluronic acid, an ammonium acryloyldimethyl taurate / VP copolymer, a sunscreen agent, basic grease, and cosmetically acceptable auxiliary materials and a solvent, the sunscreen emulsion prepared on the basis of the composition can quickly form a stable, light, thin and breathable sunscreen film on the surface of skin, solves the problems that a sunscreen agent in a traditional sunscreen product is non-uniform in agglomeration and dispersion, a formed film is rigid and airtight, the sunscreen effect is easy to lose due to sweating / friction, the skin feeling is poor and the like, and has the advantages of high sunscreen stability, excellent water resistance and good skin feeling; the method can be widely applied to preparation of skin care products with a sunscreen effect.

The invention belongs to the field of cosmetics, and discloses a preparation method of a sunscreen synergistic composition, which specifically comprises the following steps: 1, dissolving isostearic acid in a first solvent, adding polymethyl methacrylate into the first solvent, and carrying out ultrasonic or homogeneous dispersion to obtain a mixture; step 2, carrying out solvent removal treatment on the mixture obtained in the step 1; and 3, dissolving trimethylsiloxy silicate ester in a second solvent, adding the product obtained in the step 2 into the second solvent, and uniformly mixing to obtain the sunscreen synergistic composition, the mass ratio of the polymethyl methacrylate to the isostearic acid to the trimethylsiloxy silicate ester is 1: (0.1-0.3): (0.2-0.9). According to the sunscreen synergistic composition prepared by the preparation method disclosed by the invention, the components of the sunscreen synergistic composition can be better compatible, so that the skin feeling of the sunscreen synergistic composition is more velvet, meanwhile, polymethyl methacrylate is firmer and is not easy to migrate or fall off, and the sunscreen effect of the product is favorably improved.

The invention discloses a kind of plant sunscreen synergistic composition and application thereof, belong to the field of cosmetics technology; The plant sunscreen synergistic composition provided by the present invention includes the following components in parts by mass: 0.1-1 parts of Cimicifuga extract, 0.3-1 parts of Eucommia leaf extract, 1-3 parts of Rambutan peel extract, 5-10 parts of Cyperus root extract. The present invention is compounded by selecting the components of appropriate mass ratio, and the obtained composition has a good effect of absorbing ultraviolet rays, and also has excellent anti-inflammatory and soothing effect. Moreover, when subsequently added into sunscreen products, it can effectively stabilize the physical sunscreen and chemical sunscreen in sunscreen lotion, and can also enhance the sunscreen effect of physical sunscreen and chemical sunscreen, improve the durability of sunscreen products, and can enhance the repair of sunscreen products to skin after sun exposure.

The invention relates to the technical field of cosmetics, in particular to a sunscreen composition and a preparation method and application thereof. The sunscreen composition disclosed by the invention is prepared by adopting a specific emulsifier and a D-phase emulsification process, obtained particles are fine and uniform in granularity, and not only have excellent stability, but also can effectively improve the sunscreen efficiency of a sunscreen product, and has an obvious synergistic effect on the sunscreen effect; in addition, the use amount of a chemical sun-screening agent in a sun-screening product can be reduced, then the problem that the skin feeling of a high-magnification sun-screening product is greasy is solved, and the composition is suitable for preparing cosmetics with the sun-screening or light protection effect and has a good application prospect in the field of cosmetics.

The invention discloses an oil-in-water type sunscreen product and a preparation method thereof, and belongs to the technical field of cosmetics. The oil-in-water type sunscreen product is prepared from the following components in parts by weight: 0.01 to 1 part of thickening agent and 0.01 to 5 parts of dispersion stabilizer, wherein the thickening agent comprises carbomer, an acrylic acid (ester) / C10-30 alkanol acrylate cross-linked polymer and a hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer; the dispersion stabilizer is prepared from disteardimonium hectorite and polyhydroxystearic acid. The oil-in-water type sunscreen product has the advantages of good sunscreen effect, good stability, small skin irritation, fresh and cool skin feeling and good conformity. The preparation method comprises the step of mixing the preparation raw materials of the oil-in-water type sunscreen product according to a preset ratio, and the method is simple, easy to operate and suitable for industrial production.

The invention provides a composite sun-screening agent based on an encapsulation technology as well as a preparation method and application of the composite sun-screening agent. The preparation method of the composite sun-screening agent comprises the following steps: fully dispersing hydroxyapatite nanoparticles in an alkaline solvent, adding a dopamine monomer, and carrying out oxidative polymerization reaction, centrifugal washing and drying to obtain HAP-PDA composite nanoparticles; and fully dispersing the HAP-PDA composite nanoparticles in a solvent, adding a mixed solution of a chemical sun-screening agent and an antioxidant and a surfactant, and performing encapsulation reaction and centrifugation to obtain the product. According to the invention, a polydopamine and hydroxyapatite composite encapsulation technology is innovatively adopted, so that the stability and biocompatibility of the sun-screening agent and the antioxidant are remarkably improved, the sun-screening effect is enhanced, and the product is endowed with a lasting sun-screening effect and excellent oxidation resistance. According to the invention, the limitation of a traditional sunscreen product is broken through, and safer, more efficient and more comfortable sunscreen experience can be provided for consumers.

The invention provides a composition with full-wave-band invisible light-blocking and sun-screening effects and application thereof. The composition comprises zinc oxide, lactobacillus / soybean milk fermentation product filtrate, a sun-screening auxiliary agent and a dispersing agent, the sun-screening auxiliary agent comprises silica, sodium calcium aluminum silicate, a vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer, polymethyl methacrylate, a silane coupling agent, a silane coupling agent and a solvent. The silicone rubber is any one or a combination of at least two of diphenyl polydimethylsiloxane / vinyl diphenyl polydimethylsiloxane / silsesquioxane cross-linked polymer or polymethyl silsesquioxane; the dispersing agent is prepared from any one or a combination of at least two of polyhydroxystearic acid, cholesteryl hydroxystearate, dimeric pentaerythritol pentaisostearate, ethylhexyl hydroxystearate or dimeric pentaerythritol tri-polyhydroxystearate. The composition can increase the full-wave-band sunscreen performance, avoid skin sunburn, sunburn and sunburn red, and enhance the skin barrier.

The present application relates to a kind of photo-crosslinkable polymer with anti-UV effect, its preparation method and application, with the anti-UV effect of small molecule compound is connected to the hydrophilic natural polymer skeleton by chemical bond connection mode, while introducing photo-crosslinkable (methyl) acryl, prepare the photo-crosslinkable polymer with anti-UV effect, its solution is irradiated after specific wavelength light, under the action of photoinitiator, (methyl) acryl is initiated crosslinking polymerization, form the water gel that does not flow, form physical barrier in contact site, block external ultraviolet radiation or pollution.Anti-UV small molecule is connected by chemical bond in crosslinking network, play out sunscreen effect, while, the mechanical strength of gel network can resist water impact and the penetration of sweat, so that the sunscreen water gel of the present application is in extension sunscreen molecule's retention time, also reduce the security risk of small molecule sunscreen agent penetration into skin.

The present application relates to the field of cosmetics, and relates to a cosmetic with whitening and sunscreen functions and a preparation method thereof. Calculated by mass percentage, the whitening and sunscreen composition comprises: 0.5% to 5% melanin, 0.1% to 0.5% allantoin, 0.1% to 1% ferulic acid, 0.01% to 0.05% astaxanthin, 0.1% to 0.5% orotic acid; the remainder is water. Chemical sunscreens and physical sunscreens are compounded so that both the internal and external phases of the cosmetic contain sunscreens, which can avoid sunscreen voids to the greatest extent. By compounding melanin, allantoin, ferulic acid, astaxanthin, and orotic acid in a specific ratio and compounding them in the above-mentioned cosmetic formula, the ability of the cosmetic to absorb ultraviolet rays, accelerate wound healing, effectively scavenge free radicals, inhibit inflammatory factors, promote skin renewal, and combine pathways to further improve the product's sunscreen effect.

The utility model belongs to the technical field of 3D printing, and particularly relates to a 3D printing waterproof sunscreen mask. The utility model discloses a 3D printing waterproof and sunscreen mask which mainly comprises an elastic structural surface and a lattice structural surface. The lattice structure surface is arranged on the elastic structure surface; a plurality of air channels are arranged in the lattice structure surface; the lattice structure surface can fit the human body surface. The 3D printing waterproof and sunscreen mask fits the facial contour of a user, has good air permeability, is comfortable to wear, and also has waterproof and sunscreen effects.

The utility model discloses a sun -proof durable polyester grey cloth relates to textile fabric technical field, and its technical scheme main points are: including surface layer and inner layer, the end surface of surface layer is away from the inner layer and is provided with a plurality of sunshade parts, the sunshade part includes a plurality of sunshade strips, a plurality of perforation no.

The present application relates to the technical field of luggage, in particular to a roof luggage. The roof luggage comprises a bearing plate, a rotating assembly, a box body and a sunshade assembly. The rotating assembly comprises a bottom shell, a rotating table and a connecting plate. The bottom shell is fixedly installed on the bearing plate. The rotating table is rotationally connected with the bottom shell. The side surface of the rotating table is formed with a driving assembly for driving the rotating table to rotate by a preset angle relative to the bottom shell. The connecting plate is connected to the top of the rotating table. The box body is installed on the side of the connecting plate away from the rotating table. The long side of the box body is formed with a sunshade hole. The extending end of the sunshade assembly extends out of or is retracted into the sunshade hole along a predetermined direction. The predetermined direction is perpendicular to the length direction of the sunshade hole. The width of the extending end of the sunshade assembly is greater than the short side width of the box body. The present application can effectively increase the sun protection area of the roof, improve the sun protection effect of the roof of the automobile, avoid the high temperature in the car caused by the sun exposure, and improve the riding comfort of the user.

The invention relates to a photo-crosslinkable polymer with an anti-ultraviolet effect and a preparation method and application of the photo-crosslinkable polymer with the anti-ultraviolet effect, a small molecule compound with the anti-ultraviolet effect is connected to a hydrophilic natural polymer skeleton in a chemical bonding mode, and meanwhile photo-crosslinkable (methyl) acryloyl is introduced to prepare the photo-crosslinkable polymer with the anti-ultraviolet effect. A photocrosslinkable polymer with an anti-ultraviolet effect is prepared by using a photoinitiator as a crosslinking agent, and after a solution of the photocrosslinkable polymer is irradiated by light with a specific wavelength, a crosslinking polymerization reaction of (methyl) acryloyl is initiated under the action of the photoinitiator to form a non-flowing hydrogel, and a physical barrier is formed at a contact part to block external ultraviolet irradiation or pollution. The anti-ultraviolet small molecules are connected to the cross-linked network through chemical bonds, so that the sunscreen effect is exerted, and meanwhile, the mechanical strength of the gel network can resist the impact of flowing water and the permeation of sweat, so that the sunscreen hydrogel prolongs the residence time of the sunscreen molecules, and has a good sunscreen effect. And the safety risk caused by penetration of the small molecular sun-screening agent into the skin is also reduced.

This invention discloses a multi-effect sunscreen agent and its preparation method, relating to the field of cosmetic technology. This invention adds vetiver root extract, winged fruit oil, and rice bran oil extract to existing conventional chemical sunscreen ingredients, which not only reduces the amount of isoamyl methoxycinnamate, ethylhexyl triazine ketone, methylene bis-benzotriazolyl tetramethylbutylphenol, and bis-ethylhexyloxyphenol methoxyphenyl triazine used in existing chemical sunscreens, but also synergistically increases the sun protection effect. The active ingredients of this multi-effect sunscreen agent are plant-derived substances, making the ingredients safe and mild. Furthermore, the preparation method is simple, the ingredients are readily available, and it has broad market application prospects.

The invention discloses a sunscreen cosmetic composition and a preparation method thereof. The sunscreen cosmetic composition comprises modified lignin, a compound emulsifier and water, the preparation method of the modified lignin comprises the following steps: carrying out dehydration condensation reaction on lignin and a compound as shown in a formula (I) and / or a condensation product of the compound as shown in the formula (I); the compound emulsifier is prepared from lauryl polyglycerol-3 polydimethylsilyloxyethyl polydimethylsiloxane and polyglycerol-3 polydimethylsilyloxyethyl polydimethylsiloxane, and the compound emulsifier is prepared from polyglycerol-3 polydimethylsilyloxyethyl polydimethylsiloxane; meanwhile, the adding amount of the modified lignin and the compound emulsifier is controlled, and all the components are mixed, dispersed and emulsified during preparation. Practice shows that the formula of the lignin can obtain excellent dispersion uniformity, good stability, good sunscreen effect and smooth and soft dosage form, and solves the problems existing when the lignin is used in sunscreen cosmetics at present. # imgabs0 #

The utility model is applicable to the technical field of citrus planting, and provides a citrus sunscreen device which comprises a vertical rod assembly and a sunscreen net, the vertical rod assembly comprises a main rod, a guide pipe is transversely arranged at the top of the main rod in a penetrating mode, the interior of the guide pipe is square, a traction rod is transversely arranged in the guide pipe, and an adjusting wheel is further rotationally arranged at the rear end of the guide pipe. The traction rod comprises a square rod, a threaded rod and a traction ring, the traction ring is connected with a steel wire rope, the steel wire rope is provided with a row of sliding sleeves, the sliding sleeves are fixed to the sunscreen net, and the bottoms of the two sides of the sunscreen net are further provided with balance weight pieces. According to the device, the sunscreen net can be conveniently unfolded and folded, and the operation is simple; the bottom of the sunscreen net is provided with the configuration piece, so that the sunscreen net can be kept tensioned and stable, the two sides of the sunscreen net can droop, the lateral sunshade area is further increased, and the sunscreen effect is improved; and the tensioning traction rod can be operated to ensure that the steel wire rope is in a straightened state, and operation is convenient.

The invention belongs to the technical field of sunscreen cosmetics, and particularly relates to a sunscreen agent based on hydroxyapatite microspheres and a preparation method of the sunscreen agent. The sun-screening agent based on the hydroxyapatite microspheres is prepared from the following components in percentage by mass: 13 percent to 26 percent of water-soluble chitosan, 40 percent to 43 percent of the hydroxyapatite microspheres and 34 percent to 44 percent of a freeze-drying protective agent. The sun-screening agent can act on the skin epidermis through introduction, is different from a traditional sun-screening agent which is only simply smeared to maintain the sun-screening effect of one day or several days, and the long-acting sun-screening agent based on the hydroxyapatite microspheres can stay on the skin epidermis for a long time to achieve the effects of absorbing and reflecting UVB, so that the sun-screening effect is achieved until the sun-screening agent is completely degraded.

The invention relates to the field of cosmetics, in particular to a composition and application thereof in sunscreen. The composition adopts pure natural components, is mild and safe, and is friendly to the environment and human bodies. The dosage of a chemical sun-screening agent in a high-power sun-screening product can be reduced, and a fresh and light skin feeling is provided. The sunscreen composition focuses on full-band strong adsorption of spectral ultraviolet rays and blue rays in the early stage, the SPF value can be directly increased by 20%-35% after entering the formula, the sunscreen synergistic effect is remarkable, and the dosage of a chemical sunscreen agent can be reduced by 10%-15% or the SPF value can be increased by 20%-35% by adding 1% of the sunscreen composition. Soothing, repairing and anti-blackening effects are provided for skin problems caused by ultraviolet rays, and full-dimensional sunscreen is achieved.

The invention relates to the technical field of daily chemicals, in particular to a gentle face-cleaning mousse composition with a strong sunscreen effect, a preparation method and application. The composition is prepared from sodium cocoyl amino propionate, disodium cocoyl glutamate, di (PPG-2) myristica oleyl alcohol polyether-10) adipate and sodium lauroamphoacetate, wherein the sodium lauroamphoacetate and the sodium cocoyl oleyl alcohol polyether-10 are used as raw materials; the mass ratio of the sodium cocoyl amino propionate to the disodium cocoyl glutamate to the di (PPG-2 myristica oleyl polyether-10) adipate to the sodium lauroamphoacetate is (8 to 20) to (2 to 15) to (0.1 to 3) to (2 to 10). The foam is fine and dense, the step of manual foaming is omitted, and the using process is simpler and more time-saving. The fine foam can uniformly cover the surface, so that the residue of the sun-screening agent can be comprehensively cleaned. Compared with an emulsion or paste product, the foam texture has smaller friction on the skin, and is suitable for sensitive skin or skin prone to couperose skin.

The invention relates to the field of cosmetics, in particular to a vegetable wax sunscreen synergistic composition which is composed of vegetable wax and an emulsifier. The mass ratio of the vegetable wax to the emulsifier is (0.1-1.5): (0.1-2.9); the vegetable wax is one or a combination of two of candelilla wax and synthetic candelilla wax; the emulsifying agent is one or a combination of more of stearyl alcohol polyether-21, C12-20 alkyl glucoside and PEG (Polyethylene Glycol)-100 stearate; according to the plant wax sunscreen synergistic composition provided by the invention, the specific plant wax and the emulsifier are compounded, and the synergistic effect between the plant wax and the emulsifier is utilized, so that the plant wax sunscreen synergistic composition is applied to a sunscreen product, and the sunscreen effect of the sunscreen product can be effectively improved; meanwhile, the invention further discloses application of the plant wax sunscreen synergistic composition and cosmetics containing the plant wax sunscreen synergistic composition.

The invention discloses a high-power sunscreen composition with light and thin skin feeling as well as a preparation method and application thereof, and belongs to the technical field of cosmetics. The high-power sunscreen composition comprises the following components in parts by weight: 17-35 parts of a sunscreen agent, 1-11 parts of a skin feeling adjusting composition, 1-4 parts of pre-emulsified slurry, 1.5-5 parts of an emulsifier, 0.4-2.2 parts of an emulsion stabilizer, 2-7 parts of a skin conditioner and the balance of water, wherein the total amount is 100 parts. Through the optimization of the component formula and the preparation method, the contradiction among the viscosity, the stability and the sunscreen effect of the product can be well solved; the prepared sunscreen composition has light and thin skin feeling, is not greasy, low in product viscosity and stable in system, and the sunscreen effect can reach the indexes of SPF50 < + > and PA < + + + + >.

The evaluation method acquires reflected light of ultraviolet light irradiated on the skin of a user coated with an external skin care product having a sunscreen effect, estimates, on the basis of the reflected light, an ultraviolet protection value of the external skin care product having the sunscreen effect with respect to the skin of the user, and evaluates the skin of the user using the ultraviolet protection value. And evaluating the matching between the skin of the user and the external skin care product with the sunscreen effect.

The invention provides a non-treatment-purpose confocal detection method for chemical efficacy based on a zebra fish model and an application of the non-treatment-purpose confocal detection method. According to the application, the KRT4 transgenic red fluorescent line zebrafish is utilized, and UVA damage and image acquisition are carried out through a confocal microscope. The sunscreen effect is detected, the bottom of a culture dish is coated with a tested chemical to form a film, and the sunscreen effect is quantitatively evaluated by comparing the skin fluorescence intensity weakening degree of a sample group and a model group after UVA irradiation; and detecting the repair effect, incubating the damaged zebrafish by using a tested chemical solution, and quantitatively evaluating the repair effect by comparing the epidermis fluorescence intensity recovery degrees of the incubated sample group and the model group. According to the method, the living body biological model is combined with the confocal microscope UVA damage and imaging technology, direct, quantitative, visual and high-throughput evaluation on the efficacy of the chemicals is achieved, and the defects that a traditional in-vitro method is not close to living bodies, and human body tests are high in cost and long in period are overcome.

The invention relates to the technical field of skin care product raw materials, and particularly discloses a moisturizing composition and a preparation method thereof. The moisturizing and hydrating composition is prepared from the following components in parts by mass: 89.1 to 90.9 parts of a moisturizing agent; 0.9 to 1.1 parts of an antibacterial agent; 8.2 to 9.8 parts of a composite plant extract; the composite plant extract is prepared by compounding a centella asiatica leaf extract, a fucus extract, an impatiens balsamina flower extract, an Australian Kakadu plum extract and a selaginella tamariscina extract. The moisturizing sunscreen cream has the advantages of lasting moisturizing effect and good sunscreen effect.

The invention relates to the technical field of textile fabrics, and discloses a preparation method of a light, thin, sun-proof and elastic fabric with cool feeling and antibacterial effect, comprising the following steps: S1, weaving 60S / 1 MC yarns and SORONA yarns by weaving scutching according to a one-mold one-mold mode; s2, the obtained gray fabric is subjected to shrinkage finishing, pre-shaping finishing, scouring finishing, biological enzyme finishing and post-treatment finishing in sequence; s3, 20-40 G / L of an anti-ultraviolet finishing agent YK-966 is added to the gray fabric subjected to post-treatment finishing on a setting machine, anti-ultraviolet finishing is conducted according to the parameters that the liquid rate is 85%-100%, the setting temperature is 130-150 DEG C and the vehicle speed is 35-45 m / min, and the light and thin sunscreen elastic fabric with the cool feeling and the antibacterial effect is obtained. The yarn length of the MC yarn and the yarn length of the SORONA yarn are 125 mm / 100 G to 135 mm / 100 G; according to the preparation method, a specific knitting and weaving process is matched with a specific ultraviolet finishing agent YK-966, so that the fabric has a better sunscreen effect; meanwhile, the invention further discloses the light and thin sunscreen elastic fabric which is prepared through the preparation method and has the cool feeling and the antibacterial effect.

The application discloses a high-multiple sunscreen composition with light and thin skin feeling and a preparation method and application thereof, and belongs to the technical field of cosmetics. According to weight parts, components of the high-multiple sunscreen composition include: sunscreen agent 17-35 parts, skin feeling adjusting composition 1-11 parts, pre-emulsified slurry 1-4 parts, emulsifier 1.5-5 parts, emulsion stabilizer 0.4-2.2 parts, skin conditioner 2-7 parts, and water supplementing the rest to 100 parts. Through component formula and preparation method optimization, the scheme of the application can better solve the contradiction between product viscosity, stability and sunscreen effect; the prepared sunscreen composition has light and thin skin feeling, is not greasy, has low product viscosity, is stable in system, and has sunscreen effect reaching SPF50+ and PA++++ index.

The utility model discloses a vehicle sunscreen device which comprises a plurality of roller shutter assemblies, and each roller shutter assembly comprises a roller shutter, a plurality of frameworks and a winding drum. The frameworks are elastic metal belts or plastic belts, each framework is provided with a concave section, the frameworks are fixedly installed on the back face or the interlayer of the roller shutter, and the multiple frameworks are parallel to one another; in an accommodating state, the framework and the roller shutter are integrally rolled and stored in the winding drum; in the using state, the framework and the roller shutter extend outwards through the opening in the winding drum. According to the vehicle sunscreen device, the multiple roller shutter assemblies are matched, traditional vehicle sunscreen equipment is optimized, the sunscreen effect can be effectively achieved, meanwhile, operation is convenient, the occupied space is small in the rolling state, and the functions are diversified.

The invention discloses zinc oxide with specific crystals and microstructures, and belongs to the field of daily chemical raw materials. The zinc oxide disclosed by the invention is in a hexagonal wurtzite crystal form, and can emit red light under excitation of 365 nm ultraviolet; the surface of the zinc oxide has oxygen holes, and the density of the oxygen holes on the surface of the zinc oxide is 30-62%. The zinc oxide with the specific microstructure can shield ultraviolet rays, more importantly, the zinc oxide can absorb the ultraviolet rays and then convert the ultraviolet rays into red light, no other metal ions are introduced into the zinc oxide, the zinc oxide does not need to be compounded with other substances, and the zinc oxide independently has the ultraviolet light conversion performance; a raw material selection with a more prominent sunscreen effect and higher safety is provided for a sunscreen product. Meanwhile, the invention also discloses a preparation method of the zinc oxide and application of the zinc oxide in sunscreen products.