10results about How to "Improves UV stability" patented technology

The present invention relates to the field of microorganisms, and in particular to a strain of Lactobacillus brevis ZG-7 and its application. The Lactobacillus brevis ZG-7 has been preserved in the Guangdong Provincial Microbial Culture Collection Center on June 14, 2023, with a preservation number of GDMCC No.63562. The Lactobacillus brevis ZG-7 of the present invention has a strong inhibitory ability against Salmonella typhimurium, and has good acid and alkali resistance and bile salt resistance, and the inhibitory property has good thermal stability and ultraviolet stability. The Lactobacillus brevis ZG-7 of the present invention can be used to regulate the microecological balance in the intestine of animals, enhance the nonspecific immune function of the body to prevent diseases, and can also provide nutritional factors, promote the digestion and absorption of nutrients, promote animal growth and improve feed conversion rate.

The invention discloses incombustible water-based aerosol spray paint and a preparation method thereof, and relates to the technical field of spray paint. When the non-combustible water-based aerosol spray paint is prepared, firstly, p-(triethoxysilyl) acetophenone reacts with trimethylchlorosilane, and then the reaction product and tetramethyl tetravinyl cyclotetrasiloxane are subjected to ring opening polymerization to obtain modified polysiloxane; grafting epoxy resin with 4-vinyl-methyl benzoate, reacting with modified polysiloxane to obtain modified epoxy resin, and emulsifying to obtain a modified epoxy resin emulsion; secondly, reacting the silicon dioxide subjected to acylating chlorination with 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine nitroxide free radicals, reacting with 3-(3-thienyl) propionaldehyde, and reacting with thiophene and 3-vinyl thiophene to obtain modified silicon dioxide; and finally, mixing the modified epoxy resin emulsion, pure water, the modified silicon dioxide, a curing agent and a photoinitiator to prepare the incombustible water-based aerosol spray paint.

The invention discloses a thiophene pyrrole fused benzothiadiazole dichroic dye and application thereof.The thiophene pyrrole fused benzothiadiazole dichroic dye takes thiophene pyrrole fused benzothiadiazole as an acceptor unit and a benzene ring and thiophene or a derivative thereof as a donor unit, and the structural formula of the dichroic dye is # imgabs0 #, r2 represents any one of C3-10 branched chain or straight chain alkyl, C3-10 branched chain or straight chain alkoxy and C3-10 branched chain or straight chain alkylamino, and n is an integer of 1-3. The dichroic dye disclosed by the invention has the advantages of wide ultraviolet absorption range, good ultraviolet stability and the like, and can be used for preparing high-performance intelligent vehicle windows.

The application provides an organic-inorganic hybrid light conversion material, a film composition, a photovoltaic film and application thereof. The organic-inorganic hybrid light conversion material comprises metal halide anions and quaternary phosphonium salt cations. The metal halide anions comprise metal cations and halide ions. The structure of the quaternary phosphonium salt cations is shown in formula (I). In formula (I), n, m and z are independently selected from integers from 0 to 5; X1, X2 and X3 are all C atoms, or at least one of X1, X2 and X3 is an N atom. The organic-inorganic hybrid light conversion material based on the application solves the problem of poor stability of the light conversion material in the prior art.

The present invention discloses a potato soft rot antagonistic Bacillus subtilis 20Q2B‑18‑1 and its application, and relates to the field of biotechnology. The Bacillus subtilis 20Q2B‑18‑1 was deposited in the Guangdong Provincial Microbial Culture Collection Center on September 26, 2022, with a preservation address of 5th Floor, Building 59, No. 100, Xianlie Middle Road, Guangzhou, and a preservation number of GDMCC No: 62836. The Bacillus subtilis 20Q2B‑18‑1 provided by the present invention can be well colonized on Qingshu No. 9 and Qingshu No. 2, and it has an inhibitory effect on the soft rot pathogens of potato in both treatment and protection modes, and can induce SOD (superoxide dismutase), CAT (catalase), PPO (polyphenol oxidase) and POD (peroxidase) enzyme activities to increase.

The present invention discloses a modified water-oxygen barrier film, a flexible perovskite battery and a preparation method and application thereof, and belongs to the technical field of flexible perovskite solar cells. The modified water-oxygen barrier film of the present invention comprises a base water-oxygen barrier material, an adhesive enhancement layer and a butyl rubber layer, wherein the adhesive enhancement layer is coated on the surface periphery of the base water-oxygen barrier material, and the base water-oxygen barrier material and the butyl rubber layer are bonded by the adhesive enhancement layer; the thickness of the adhesive enhancement layer is 1-10 μm, and the thickness of the butyl rubber layer is 50-1000 μm. The present invention introduces an adhesive enhancement layer between the butyl rubber and the base water-oxygen barrier material, which can achieve better interface bonding between the butyl rubber and the base water-oxygen barrier material during the lamination process, has large bonding force, simple construction and low cost, and can effectively improve the problem of low bonding force between the butyl rubber and the water-oxygen barrier film interface.

The invention discloses a modified brominated butyl rubber composite damping material and a preparation method thereof, and relates to the field of rubber materials.The preparation method comprises the steps that a brominated butyl rubber composition and an aging agent are subjected to primary banburying, and cerium dioxide / brominated butyl rubber is obtained; heating and uniformly mixing the internally mixed cerium dioxide / brominated butyl rubber and epoxy resin composition at a constant temperature, and then carrying out secondary internal mixing to obtain a cerium dioxide / brominated butyl rubber / epoxy resin intermediate composite material; and carrying out open milling on the intermediate composite material, and then carrying out vulcanization molding to obtain the modified brominated butyl rubber composite damping material. The problems that the temperature range is narrow, the damping performance at the low temperature is poor, the aging phenomenon is prone to occurring in the using process, and the service life is affected are solved, the prepared composite material has the advantages of being stable at the high temperature, good in damping performance, good in ultraviolet stability and the like, and the provided preparation method is simple in process.

This application relates to an aging-resistant cable, comprising a conductor and an insulation layer. The insulation layer comprises the following components: polyvinyl chloride (PVC), cerium dioxide, lauric acid, 4-amino-2,2,6,6-tetramethylpiperidine, benzoylacetone, oxaloyl chloride, triethylamine, anhydrous ethanol, an antioxidant, and an ultraviolet absorber. It also relates to a processing method for the aging-resistant cable. This application has the following advantages and effects: The reaction of cerium dioxide with lauric acid allows metal ions and carboxyl groups to form coordinate bonds, achieving chemical anchoring and generating hydrophobic rare earth carboxylates, improving compatibility with PVC, inhibiting nanoparticle aggregation, promoting uniform dispersion, and providing thermal and light stabilization. Furthermore, the reaction of 4-amino-2,2,6,6-tetramethylpiperidine, benzoylacetone, and oxaloyl chloride yields a free radical scavenging ability with metal chelating capacity and hindered amines, enhancing the thermal and photo-oxidative aging resistance of the PVC cable material.

The invention discloses a method for preparing a solar cell assisted by (trifluoroacetyl) benzotriazole, and relates to the field of solar cells. The active light-absorbing layer of the solar cell of the invention is a perovskite semiconductor material APbX3 assisted by the additive trifluoroacetyl (benzotriazole), wherein A is at least one of alkylamine, alkyl amidine or alkali element, and X is at least one of iodine, bromine and chlorine. The invention regulates the film morphology and crystallinity of the perovskite active layer by adding a trace amount of trifluoroacetyl (benzotriazole) to the perovskite solution, improves the transmission and collection of carriers; passivates the bulk defects of the perovskite light-absorbing layer, utilizes the ultraviolet isomerization properties of the material, and improves the ultraviolet stability of the perovskite film and the device; improves the difference between the forward and reverse scans of the perovskite solar cell, ensures steady-state output, improves the efficiency and repeatability of the cell, and significantly improves the photoelectric conversion of the cell.

The invention discloses a solar cell, a preparation method thereof and a photovoltaic module. The solar cell comprises a silicon substrate, and an emitting electrode, a first silicon oxide layer and an aluminum oxide layer are sequentially arranged on the light receiving surface of the silicon substrate in a laminated mode; wherein the thickness of the first silicon oxide layer ranges from 0.2 nm to 1.2 nm. According to the invention, the interface stability of the emitter can be effectively improved, and the efficiency attenuation of the solar cell under ultraviolet irradiation is inhibited.