30results about How to "Good UV shielding function" patented technology

The invention relates to a titanium dioxide nanorod array film / cholesteric liquid crystal composite broadband reflecting film, and belongs to the field of application of liquid crystal display. In themethod, nematic liquid crystals, a chiral compound, polymerizable monomers and a photoinitiator are used as raw materials; the raw materials are evenly mixed and then injected into the space betweenan indium tin oxide (ITO) conductive thin film or glass with one side coated with an insulating layer and a fluorine-doped tin dioxide (FTO) conductive film or glass with a titanium dioxide nanorod array film growing on one side, and then the titanium dioxide nanorod array film / cholesteric liquid crystal composite broadband reflecting film is prepared. The titanium dioxide nanorod array in the broadband reflecting film can evenly exist on one side of a liquid crystal layer without surface modification; the array layer has an obvious broadened reflection band; the broadband reflecting film canselectively reflect visible light, near-infrared light and far-infrared light with different center peak positions and reflection bandwidths; the broadband reflecting film is environmentally friendly,free of toxicity and capable of saving energy and reducing emission, the preparation process is short, and industrial production can be realized.

The invention provides a polymer composite film which comprises a polymer film layer and a polydopamine layer. The thickness of the polydopamine layer is greater than or equal to 100nm. Simple reaction is carried out under mild conditions to establish the polydopamine layer on different polymer film surfaces, so that the finally obtained polymer composite film has excellent ultraviolet light shielding function. The mechanical properties of the polymer film can not be negatively influenced; and since the polydopamine layer is very thin, the finally obtained composite film has small specific gravity increment and is very suitable for the aviation application field, such as airship bag material surface protective layers and the like.

The invention relates to a preparation method for a glass coating liquid which is prepared by utilizing the sol-gel method, and has ultraviolet shielding function and high visible light transmittance. The preparation method comprises the following steps: 2-methyl-5-azomycin-1-ethanol is added into the process of using the sol-gel method for preparing the coating liquid, wherein, the concentrationof 2-methyl-5-azomycin-1-ethanol is 0.01 g / L-5 g / L compared with the total amount of the glass coating liquid; and the prepared glass coating liquid is enabled to have ultraviolet shielding function and good light stability through the interaction of 2-methyl-5-azomycin-1-ethanol and silicon dioxide. The ultraviolet transmittance and the visible light transmittance of the glass coating liquid areadjusted by regulating the concentration of the 2-methyl-5-azomycin-1-ethanol in a glass coating liquid system. The prepared glass coating liquid has the ultraviolet shielding function, and has the advantages of ultraviolet obstruction, high transparency, simple preparing process, low cost, good light stability, and the like.

Provided is an ultra-white composite sericite product, which includes sericite as a base material or core, and a titanium dioxide layer, a magnesium oxide layer and a silicon dioxide layer coated sequentially on the surface of the sericite. Also provided is a method of preparing the ultra-white composite sericite product from gray sericite with low whiteness.

The invention provides a method for preparing nano powder with a strong ultraviolet absorption function. The method comprises the following steps: mechanically pulverizing metal oxides, and carrying out ultrasonic high-speed atomization; carrying out airflow pulverization and surface modification, thus finally obtaining a product. The zinc oxide, the cadmium oxide, the titanium dioxide and the tin dioxide used by the method for preparing the nano powder with the strong ultraviolet adsorption function have a good ultraviolet shielding function, also has the advantages of no stimulation to skin, no decomposition, no degeneration, and good thermal stability, and can be widely used in cosmetics, plastics, textiles and other industries.

The invention provides an adhesive for an ultraviolet-resistant glass functional film with excellent ultraviolet shielding function, the adhesive comprises a pressure-sensitive adhesive of 44-49% by weight, 2.4-2.7% of an ultraviolet absorber and 48‑54% solvent, and the ultraviolet absorber is composed of a mono(hydroxyphenyl) triazine compound and a tri(hydroxyphenyl) triazine compound in a weight ratio of 1:1.7‑2.2. In the adhesive of the present invention, by selecting a tris(hydroxyphenyl)triazine compound with excellent shielding power for the entire ultraviolet band and a specific ratio of a mono(hydroxyphenyl)triazine compound as an ultraviolet absorber, the obtained adhesive The adhesive has the same UV shielding ability as the single use of tris(hydroxyphenyl)triazine compound when the amount of ultraviolet absorber added is small and the coating is thin, which not only greatly reduces the cost of the adhesive, but also has a lower Yellow index, especially suitable for the use of light-transmitting glass functional films for buildings or vehicles.

The invention relates to the field of building materials, in particular to a nanometer mesoporous titanium dioxide / nanometer silica sol coating and a preparation method thereof. The coating is characterized in that nanometer mesoporous titanium dioxide particles and nanometer silica sol particles are used. The preparation method comprises the following steps of: dispersing, and grinding; putting water, powder and an aid into a dispersion machine, grinding, and filtering to obtain slurry; and performing paint mixing, namely putting emulsion, nanometer mesoporous titanium dioxide, nanometer silica sol, water and an aid into the dispersed slurry, regulating the pH value and viscosity, and thus obtaining the coating. The coating is prepared by simple processes of dispersing, sanding, filtering and the like, the defects that the conventional coating has low stain resistance and weather resistance, is not environment-friendly and the like are overcome, and the coating is endowed with good new functions such as a self-cleaning function, an antibacterial function and the like, has high storage stability, scour resistance, stain resistance and weather resistance, and is suitable for an exterior wall coating.

The invention belongs to the technical field of the coating composite, in particular to ultraviolet radiation-resistant organic-inorganic compound transparent coating and the preparative method thereof. The invention comprises the steps as follows: amphoteric ion multipolymer is adopted as the surface activator and the stabilizing agent to conduct surface modification for the organic nm grain; effective blending physical compounding of the inorganic nm grain and the polymer basal body is carried out for the aim of producing the organic-inorganic compound transparent coating. The invention overcomes the disadvantages of uneven reuniting and dispersion, weak heat stability and bad function durability of ultraviolet absorbent in the traditional blending fusion composite algorithm in the polymer, as well as rejects the shortcomings such as complicate preparative technique, high cost and so on of the prior chemical compounding method. The film made of the compound transparent coating has an ultraviolet screening factor of higher than 99.9 percent and the permeability of visible beam region of more than 90 percent. Moreover, the invention is applicable for the production of the ultraviolet radiation-resistant film and various anti-aging plastic products requiring high light permeability, and the fields of automobile, preservation of cultural relics and environment protection.

The invention relates to a microcapsule with dual functions of mosquito repelling and anti-ultraviolet and a preparation method thereof, comprising a capsule wall with an anti-ultraviolet function and a capsule core with a mosquito repellent function. The invention utilizes the complementary advantages of nano-titanium dioxide and nano-zinc oxide in absorbing ultraviolet radiation in different bands, endows the microcapsules with excellent ultraviolet shielding properties, and due to the slow-release effect of the microcapsules, the mosquito repellent can play a long-term anti-mosquito effect. The bifunctional microcapsule prepared by the invention has uniform particle size, excellent anti-ultraviolet function and mosquito repelling function, and has good application prospects in the fields of multi-functional summer wear textiles, outdoor textiles and daily chemicals.

The invention belongs to the field of inorganic materials, and relates to a method for preparing zinc oxalate with pearl luster and zinc oxide microfine powder with pearl luster. The method comprises the following steps of: (1) storing 100ml of solution of zinc nitrate at the concentration of 0.05 and 0.20mol / L in a reactor, adding citric acid or citrate at the concentration of between 0.05 and 0.50g / L, stirring, and regulating the pH value to be between 1.5 and 5.0; (2) taking 100ml of solution of ammonium oxalate at the concentration of between 0.06 and 0.24mol / L, and regulating the pH value to be between 5.0 and 7.0; (3) dripping the two kinds of solution into the reactor at the speed of between 2 and 10mL / min, continuing to stir and age for 30 minutes after feed liquid is added, immediately performing centrifugal separation or suction filtration separation, repeatedly washing for 4 to 5 times, and drying in a drying oven to obtain a flaky zinc oxalate powder product with pearl luster; and (4) heating a tubular calcination furnace to raise the temperature of the zinc oxalate powder in the furnace to the temperature above 380 DEG C, keeping the temperature for 1 hour, and directly taking the zinc oxalate powder out for air cooling to obtain flaky zinc oxide powder with pearl luster. The flaky ZnO prepared by the method may have a more excellent ultraviolet shielding function; and due to a unique pearlized effect of the flaky ZnO, the flaky ZnO may be developed into a novel sunscreen product which integrates beauty and practicability into a whole, or is taken as a matrix material to be subjected to treatment such as doping, coating and the like so as to form a novel pearl pigment.

The invention discloses a microporous foaming high-strength anti-aging PPA / PETG composite plastic manhole cover and a preparation method thereof. The PPA / PETG composite material is used as a matrix resin and embedded surface-loaded TiO is added. 2 Halloysite nanotube anti-aging composite foaming agent and dendritic calcium carbonate whisker material reinforcement, using the special tubular structure of halloysite, embedding p-toluenesulfonylsemicarbazide foaming agent in the inner wall of the tube, and loading on the surface with excellent ultraviolet rays Shielding function of TiO 2 , which can not only make the inside of the manhole cover evenly foam, effectively realize the weight reduction of the manhole cover, but also improve the anti-aging performance of the manhole cover. And using graphite flakes as the matrix template, calcium carbonate whiskers are synthesized by liquid phase reaction method and attached to the surface of graphite flakes to form a "dendritic" structure reinforcement material, using the anisotropy of calcium carbonate whiskers on the surface of graphite flakes and the graphite flake layer The characteristics of sliding between manholes can realize the strengthening effect on the manhole cover and overcome the reduction of the strength of the manhole cover due to foaming.