6024 results about "Ultraviolet Radiations" patented technology

The invention discloses ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete comprises the following components in percentage by mass: 15%-25% of cement, 3%-6% of nano SiO2, 30%-35% of fly ash or steel slag powder, 35%-40% of recycled aggregate, 1%-4% of fiber, 0.5% of a microbial remediation agent and 1%-3% of nano TiO2. The preparation method comprises the following steps: S1, pretreating the recycled aggregate; and S2, packaging the microbial remediation agent: mixing the bacillus pasteurii spores with calcium lactate, and wrapping the mixture in calcium phosphate microspheres. S3, step-by-step stirring; S3.1, dry mixing: uniformly stirring the cement, the fly ash, the nano SiO2, the nano TiO2 and the recycled aggregate; s3.2, wet mixing is carried out, water solution fibers containing the polycarboxylic acid water reducing agent are added, uniform stirring is carried out, and the water-binder ratio of the water solution containing the polycarboxylic acid water reducing agent is 0.18; s3.3, final mixing: adding the packaged microbial remediation agent, and uniformly stirring; and S4, directional curing: performing steam curing at 80 DEG C for 48 hours, performing ultraviolet irradiation, and performing constant-temperature and constant-humidity curing for 7 days. The ultra-high performance concrete has the effects of low cost, low carbon emission, multi-function integration and repeatable crack self-repairing.

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.

The invention discloses a method and a device for monitoring the running state of a railway overhead line system. The method comprises the following steps: receiving environmental data acquired by various sensors; the environment data comprises at least one of humidity data, wind speed data, temperature data, ultraviolet intensity data and electromagnetic induction intensity signals; predicting the environmental data through a pre-established risk prediction model to obtain a predicted contact network risk level; wherein the risk prediction model is established based on historical environment data; based on historical fault data, the environment data and an actual detection result, the contact network state is evaluated, and a contact network state evaluation grade is obtained; and generating early warning information according to the contact network risk level and the contact network state evaluation level. According to the invention, operation state monitoring, risk level discrimination and intelligent early warning linkage based on multi-source data can be realized, so that the safety and operation and maintenance efficiency of the contact network system are improved.

The application discloses a kind of ship super-long anticorrosion special nano powder coating, preparation method and application, belong to ship heavy anticorrosion material technical field.The preparation method of the ship super-long anticorrosion special nano powder coating is as follows: epoxy resin, graphene modified epoxy resin, core-shell structure ZnO@SiO2, modified 2,5-dimercapto-1,3,4-thiadiazole, borosilicate glass powder, flaky boron nitride, silane coupling agent modified silica, phenolic amine curing agent, 2-ethyl-4-methylimidazole, fumed silica, defoaming agent, ultraviolet absorber, high-temperature pigment are put into stirrer and stirred for 20-30min, then melt extrusion is carried out through double screw extruder, the extrusion temperature is 90-110 DEG C, grinds and sieves, and the ship super-long anticorrosion special nano powder coating is obtained.The coating prepared by the application has good anticorrosion performance and can be applied in the field of ship metal surface corrosion protection.

The invention discloses double-sided coated glass. The double-sided coated glass comprises a glass substrate, a first coating layer and a second coating layer, the first coating layer is arranged on the front surface of the glass substrate and sequentially comprises an anti-reflection layer, an ultraviolet reflection layer and a middle and far infrared reflection layer from the glass substrate to the outside; the second coating layer is arranged on the back surface of the glass substrate and sequentially comprises a near-infrared reflecting layer and a near-infrared regulation and control layer from the glass substrate to the outside, and the near-infrared regulation and control layer is used for regulating and controlling the reflectivity of the near-infrared reflecting layer. According to the design of the front anti-reflection layer of the double-sided coated glass, through continuous transition of the particle size and the refractive index of nanoparticles, the visible light reflectivity is remarkably reduced, and the light transmittance of the glass is kept to be 85% or above and is superior to that of existing composite coated glass; meanwhile, through the synergistic effect of the ultraviolet reflecting layer, the middle and far infrared reflecting layer and the back near-infrared reflecting layer, the ultraviolet blocking rate can be larger than or equal to 99%, the comprehensive infrared blocking rate can be larger than or equal to 90%, and the technical problem that light transmission and blocking performance of traditional glass are difficult to consider at the same time is solved.

The invention belongs to the technical field of back contact cells, and particularly relates to a back contact cell with a specific front surface structure and a cell assembly thereof, and the specific front surface structure comprises a tunneling oxide layer and a specific doped amorphous silicon layer which are sequentially arranged on the front surface of a silicon substrate, a low-doped amorphous silicon layer, a high-doped amorphous silicon layer and an oxygen-doped amorphous silicon layer are sequentially arranged in the specific doped amorphous silicon layer along the direction far away from the tunneling oxide layer, and the specific doped amorphous silicon layer is doped with a P element and contains an H element; the P doping concentration C1 of the low-doping amorphous silicon layer and the P doping concentration C3 of the oxygen-doping amorphous silicon layer are respectively smaller than the P doping concentration C2 of the high-doping amorphous silicon layer, and the specific front structure enables the back contact cell to absorb incident light within 400 nm, and the highest absorptivity exceeds 85%. The back contact battery disclosed by the invention can still keep good performance after being exposed to ultraviolet rays for a long time, the UV reliability of the battery is improved, meanwhile, high light transmittance is realized, and relatively high battery efficiency is also realized.

A self-cleaning method of a washing machine comprises the steps that after each washing procedure is finished, a system automatically detects the real-time humidity and the residual dirt concentration of an inner container of the washing machine, if the humidity is higher than a preset threshold value and the dirt concentration exceeds a datum line, an ultraviolet disinfection process is automatically triggered, UV-C lamp tubes installed on the top and the side wall of the inner container are started for irradiation sterilization, and the ultraviolet disinfection process is stopped; the duration time is 10-30 minutes, the built-in water flow nozzle module is activated in a set period or when a high dirt accumulation level is detected according to dynamic adjustment of the environment temperature and humidity and the use frequency, and the wall face of the inner container, the door seal ring and the drainage pipeline are flushed in all directions through high-pressure pulse water flow. According to the invention, the fundamental conversion from passive response to active prevention is realized, the equipment can perceive the environmental state of the inner container in real time by integrating a multi-dimensional sensor network and an AI prediction model, trend pre-judgment is carried out based on big data of user use habits, water quality conditions and washing modes, and a cleaning program is started when pollution does not appear so as to nip in the bud.

The invention relates to the technical field of polyolefin cable materials, in particular to a photovoltaic weather-resistant anti-cracking low-smoke halogen-free flame-retardant polyolefin cable material and a preparation method thereof.The photovoltaic weather-resistant anti-cracking low-smoke halogen-free flame-retardant polyolefin cable material is prepared from, by weight, 90-150 parts of polyolefin resin, 1-3 parts of antioxidant, 2-5 parts of ultraviolet light absorber, 30-70 parts of composite flame retardant, 10-25 parts of carbon black and 3-5 parts of cross-linking agent; the composite flame retardant comprises a core material, a first shell material and a second shell material, the core material comprises a halloysite nanotube adsorbed with a flame retardant, the first shell material comprises epoxy resin, and the second shell material comprises maleic anhydride grafted polyethylene. According to the polyolefin cable material provided by the invention, the purpose of efficient flame retardance can be achieved by adding the halloysite nanotubes and the flame retardant system, the interfacial compatibility between the flame retardant and the matrix resin can be improved by adding the maleic anhydride grafted polyethylene, and the flame retardance of the polyolefin cable material can be improved by combining the added halloysite nanotubes and epoxy resin. The purpose of improving weather resistance, stress resistance and crack resistance of matrix resin is achieved.

The invention relates to the technical field of cables, and discloses an anti-ultraviolet outdoor cold-resistant power cable adapting to day and night temperature difference. The device is provided with the polyurea sealing micro-capsules, the hexagonal cells, the micro-capsule elastic pieces and the stretching structures, in a low-temperature environment, the polyurea sealing micro-capsules contract, at the moment, the micro-capsule elastic pieces lose supporting force and begin to release elastic potential energy, the hexagonal cells deform and begin to expand outwards, and when the hexagonal cells expand outwards, the trough positions of the stretching structures are pushed to expand outwards; the stretching structure is gradually stretched into a cylindrical outline from a corrugated shape, under the external expansion action of the hexagonal cells and the stretching structure, the cable sheath layer is promoted to actively expand to offset shrinkage stress, the problem of low-temperature embrittlement is effectively avoided, meanwhile, the design of the corrugated structure is used for coping with axial shrinkage of the cable sheath layer, and the tensile strength of the cable sheath layer is improved. The cable is divided into a plurality of independent units by the cable separation rings, the overall axial shrinkage is decomposed into local small-amplitude shrinkage of each unit, and cable distortion and cable insulation layer cracking caused by shrinkage stress accumulation are avoided.

The invention discloses a high-transparency PVB intermediate film and a production process and application thereof, and relates to the technical field of PVB intermediate films, the high-transparency PVB intermediate film comprises the following raw materials by weight: 100 parts of PVB resin, 20-30 parts of a composite plasticizer, 0.5-0.9 part of an LDH-based composite antioxidant, 0.5-1 part of an ultraviolet light absorber, 0.1-1.5 parts of nano lanthanum hexaboride, 0.1-1.5 parts of porous hollow nano copper sulphide, and 0.1-2 parts of nano TiO2 / SiO2 core-shell particles. The PVB intermediate film provided by the invention is relatively high in light transmittance, low in haze value, and excellent in oxidation resistance, weather resistance and mechanical strength.

The invention discloses a high-performance ship cable and a preparation process thereof, relates to the technical field of cables, and aims to solve the problem that an existing cable is insufficient in environmental adaptability, safety, electromagnetic compatibility and the like, the cable comprises a conductor, an insulating layer, a longitudinal waterproof structure, a shielding layer and a sheath layer from inside to outside, the conductor is of a multi-strand soft copper wire stranded structure, and the copper content of the multi-strand soft copper wire stranded structure is larger than or equal to 99.95%; the DC resistance at 20 DEG C is less than or equal to 0.01724 omega mm / m; the insulating layer is made of cross-linked polyethylene or polytetrafluoroethylene and can resist 1.5 times of rated voltage for 1 minute without breakdown; the longitudinal waterproof structure comprises a water-blocking tape and water-blocking paste; the shielding layer is of a double-layer structure, and the shielding effectiveness is larger than or equal to 60 dB The sheath layer is made of a low-smoke halogen-free flame-retardant material and contains an antioxidant and an ultraviolet light absorber, the preparation process comprises six steps of conductor preparation, insulating layer forming and the like, parameters are accurately controlled, the cable can work at the temperature of-40 DEG C to 85 DEG C, is salt-fog-resistant, waterproof and flame-retardant, is adaptive to the complex environment of ships and warships, and the operation reliability and safety are improved.

The invention discloses an anti-ultraviolet high-flame-retardant polyester fiber and a preparation method thereof. The polyester fiber is prepared from the following raw materials in parts by weight: 100 parts of polyester chips, 20-60 parts of core-shell flame-retardant anti-ultraviolet particles and 2-4.5 parts of an anti-dripping agent. According to the invention, a porous alumina-titanium dioxide compound is used as a carrier, a magnesium hydroxide flame retardant, iron-doped carbon dots with photo-thermal performance and auxiliaries (an antioxidant and an ultraviolet light absorber) are combined with the carrier to construct a structural system loaded with multiple active components: functionalized flame-retardant particles, and then a polyurethane microporous membrane is coated, so that the flame-retardant polyurethane composite material is obtained. The core-shell type flame-retardant anti-ultraviolet particles are added into polyester fibers, so that the anti-ultraviolet performance and the flame-retardant performance of the polyester fibers can be remarkably improved. The polyester fiber provided by the invention can adaptively increase the release rate of the ultraviolet absorbent and the antioxidant when the ultraviolet property is enhanced in the environment, so that more optimized protection can be provided for a polyester fiber matrix at the moment.

The hose inner supporting device facilitating pipeline inner wall repairing comprises a main shaft, one end of the main shaft is provided with ultraviolet hardening equipment used for curing an inner pipe, the other end of the main shaft is provided with a detection assembly used for detecting damage and collapse, and the middle of the main shaft is provided with an inner diameter detection assembly; the inner diameter detection assembly comprises a first sleeve and a second sleeve which are arranged on the outer side of the main shaft in a sleeving mode, the inner diameter of the second sleeve is larger than the outer diameter of the main shaft, and a plurality of expansion arms are arranged on the outer side of the first sleeve in a circumferential array mode. When collapse resetting needs to be carried out, rotary hardening is carried out, finally, the whole inner diameter is consistent with the expected effect, later flow detection is facilitated, and the blocking risk is also reduced, and a first connecting rod, an annular rod and a second connecting rod are arranged to be expanded along with the inner diameter detection assembly so that an auxiliary rod can be located at the optimal position all the time; when the operating rod is needed, only the first motor needs to be started, and secondary inner diameter positioning is not needed.

The utility model relates to the technical field of LED lamp strips, in particular to a sterilization and illumination switchable LED lamp strip, which comprises a flexible circuit board, a plurality of LED lamp strips, a plurality of LED lamp strips and a plurality of LED lamp strips, the LED white light lamp beads are attached to the bonding pads of the flexible circuit board and used for converting electric energy into visible light, and the lighting function is achieved; the UVC and UVA two-in-one lamp bead is mounted on a bonding pad of the flexible circuit board and is used for converting electric energy into ultraviolet light, so that a sterilization function is realized; the LED lamp strip capable of being switched between the sterilization function and the illumination function is novel in structure, the illumination function and the sterilization function are integrated on one lamp strip, and the illumination function and the sterilization function can be switched freely through the same lamp strip.

The invention belongs to the technical field of preparation and surface protection of polyurethane coatings, and particularly relates to weather-resistant polyurethane and a preparation method thereof. The coating provided by the invention is composed of a component A and a component B according to a weight ratio of 1: (0.2-0.4). The component A is prepared from water-based fluorine-containing hydroxy acrylic dispersion resin with a high hydroxyl value, GMA (glycidyl methacrylate) grafted modified water-based acrylic dispersion resin, a benzotriazole ultraviolet light absorber, a light hindered amine stabilizer, rutile titanium dioxide, wet sericite powder, nano zinc oxide and auxiliaries; and the component B comprises an aliphatic isocyanate curing agent and propylene glycol diacetate. By constructing a quadruple synergistic weather-resistant mechanism of ultraviolet absorption, free radical capture, physical shielding and structural densification, the weather resistance and corrosion resistance of the coating are remarkably improved while the coating keeps excellent adhesive force (0-1 level) and hardness (2H-3H), the color change delta E is smaller than or equal to 1.8 after artificial accelerated aging for 1000 hours, the gloss loss rate is smaller than or equal to 23%, and the weather resistance and corrosion resistance of the coating are greatly improved. And the corrosion spreading width of a 600-hour salt spray test lineation is less than or equal to 2.3 mm.

The invention discloses a full-spectrum protective anti-fingerprint resin lens and a preparation method thereof. The full-spectrum protective anti-fingerprint resin lens comprises a functionalized resin base material and a gradient composite functional coating. The base material takes polyurethane acrylate as a matrix, and nano cerium oxide, nano barium titanate and nano tungsten oxide functional particles are uniformly dispersed through in-situ polymerization, so that base material intrinsic protection on ultraviolet rays, harmful blue light and near-infrared light is realized. The gradient coating comprises an adhesion promoting layer, a full-spectrum repairing and protecting layer and an anti-fingerprint layer from inside to outside, a stable composite system is formed through chemical bonding, protection is further reinforced, and the lens is endowed with super-hydrophobic and oleophobic anti-fingerprint characteristics. Through the integrated design of base material modification and coating compounding, the technical problems that an existing lens is single in protection wave band, not lasting in performance and prone to being stained with fingerprints are solved, and meanwhile the lens has high light transmittance, low reflection, excellent wear resistance and impact resistance and excellent comprehensive performance.

The invention provides a rare earth complex as well as a preparation method and application thereof. The chemical general formula of the rare earth complex is (Ln < 1x > Ln < 2y > Ln < 31-x-y >) (A) m (B) n, the rare earth complex provided by the invention has a self-assembly behavior, spherical nanoparticles can be formed through molecular aggregation, under ultraviolet irradiation, internal ligand molecules are better protected, the photobleaching process of the rare earth complex under natural conditions is slowed down, and the rare earth complex has better stability and higher weather resistance in the natural environment.

The invention belongs to the technical field of nutritional compositions and cosmetics, and particularly relates to an anti-aging composition and application and a product thereof. The composition provided by the invention is composed of L-ergothioneine and alpha-ketoglutaric acid, or L-ergothioneine and alpha-ketoglutaric acid salt, or L-ergothioneine and alpha-ketoglutaric acid salt. Through the synergistic effect of the L-ergothioneine and the alpha-ketoglutaric acid or the alpha-ketoglutarate, the contents of Col I and hydroxyproline in skin tissues can be remarkably increased, the expression of TGF-beta1 is up-regulated and converted, the activity of MMP-1 is inhibited, meanwhile, the malondialdehyde level is reduced to enhance the oxidation resistance, the synthesis of hyaluronic acid is promoted, and the water content of the skin is increased. The composition is simple in component and simple and convenient in preparation process, can be prepared into various products such as cosmetics, health care products or medicines, is used for achieving the effects of resisting aging, moisturizing, resisting inflammation or resisting oxidation, particularly has an excellent improvement effect on skin photoaging induced by ultraviolet rays, and is wide in application prospect.

The invention relates to the technical field of solid-state batteries, and discloses an optimized preparation method of a solid-state battery electrolyte, a composition comprises a lithium source, a lanthanum source and a zirconium source, and the molar ratio of lithium to lanthanum to zirconium is (7.0-8.0): 3.0: 2.0; the use amount of the photoacid generator accounts for 0.5-5.0 mol% of the total molar weight of the metal ions; and an organic solvent. The method comprises the following steps: S1, placing a substrate in a high-pressure reaction kettle, and injecting the precursor composition in a supercritical carbon dioxide (scCO2) environment; s2, irradiating the surface of the substrate with ultraviolet rays, performing photolysis on the photoacid generator to generate acid, and catalyzing the metal precursor to be decomposed and deposited into an amorphous film; and S3, taking out the substrate after pressure relief, and carrying out low-temperature heat treatment at 400-700 DEG C to obtain the solid electrolyte film. Through combination of photochemical deposition and a supercritical fluid technology, the problem of decomposition of a positive electrode material caused by high temperature in a traditional process is solved.

Provided is a liquid crystalline polyester fiber capable of achieving improved weatherability without kneading a UV absorber into the fiber or attaching a weatherable UV absorber after fiber spinning. The liquid crystalline polyester is a fiber that consists essentially only of a liquid crystalline polyester, in which the amount of UV absorber used is 5 mass % or less, and the strength retention in the weather fastness test with xenon arc lamp light in accordance with JIS L 0891 is 60% or more.

The invention discloses an anti-ultraviolet, antibacterial, antioxidant and high-light-transmittance food packaging film, and belongs to the field of food packaging materials, and the anti-ultraviolet, antibacterial, antioxidant and high-light-transmittance food packaging film comprises 40-60 parts of a chitosan solution; 40-60 parts of a gelatin solution; 0.01 to 0.2 part of nitrogen-doped carbon quantum dots; 0.001 to 0.02 part of an antibacterial agent; the invention further discloses a preparation method of the food packaging film. The preparation method comprises the following steps: S1, preparing a chitosan solution; s2, preparing a gelatin solution; s3, preparing nitrogen-doped carbon quantum dots; s4, the chitosan solution, the gelatin solution, the nitrogen-doped carbon quantum dots and the antibacterial agent are mixed and dried, and the multifunctional food packaging film is prepared. Generally speaking, the transparency of the food packaging film is greatly reduced while the ultraviolet barrier property of the food packaging film is improved. The nitrogen-doped carbon quantum dot disclosed by the invention has excellent absorption performance on ultraviolet light in a range of 200-400nm, almost has no absorption on visible light of 400nm or above, and has excellent oxidation resistance. The food packaging film prepared by the invention not only has excellent ultraviolet blocking capability and high visible light transmittance, but also has remarkable antibacterial and antioxidant characteristics, and shows an excellent fresh-keeping effect on strawberries and fresh-cut apples.

A method of disinfection of an object, the method including securing an infected object to a moveable carrousel within a chamber; exposing the infected object to a disinfection cycle, the disinfection cycle comprising: exposing the infected object to an atomized liquid disinfectant fog comprising a disinfectant; exposing the infected object to ultraviolet illumination from an ultraviolet illumination source before, during, after, or any thereof exposing the object to the atomized liquid disinfectant fog to disinfect the object; during the disinfection cycle changing an orientation of the infected object with respect to the atomized liquid disinfectant fog and the ultraviolet illumination source; and removing the object from the chamber.

The invention discloses a chamber supporting method and structure based on ultraviolet curing resin and a construction device. The construction method comprises the steps that a flexible ultraviolet light curing resin fiber belt is positioned at the bottom of one side of the inner wall of the chamber, and a fixing anchor rod is driven into the flexible ultraviolet light curing resin fiber belt for fixing; an arch-shaped support is installed, and a telescopic supporting mechanism is installed on the arch-shaped support in a sliding mode; the flexible ultraviolet light curing resin fiber belt is tightly attached to the inner wall of the chamber and is annularly unfolded along the inner wall of the chamber, and telescopic supporting mechanisms are adopted for supporting the flexible ultraviolet light curing resin fiber belt at certain intervals; tearing off a light-proof film on the flexible ultraviolet light curing resin fiber band, and irradiating the flexible ultraviolet light curing resin fiber band with ultraviolet light; and after the flexible ultraviolet light curing resin fiber belt is completely cured, the telescopic supporting mechanism is contracted, the arched support is removed, and construction of the chamber supporting structure is completed. The method has space adaptability, deformation coordination and rapid construction capacity, and efficient and stable supporting of the chamber is achieved.

The invention relates to the technical field of photovoltaic materials and agricultural facilities, in particular to a photovoltaic packaging adhesive film for an agricultural photovoltaic greenhouse, a preparation method of the photovoltaic packaging adhesive film and a photovoltaic panel. The invention relates to a photovoltaic packaging adhesive film for an agricultural photovoltaic greenhouse. The photovoltaic packaging adhesive film is mainly prepared from the following components in parts by weight: 90-99 parts of matrix resin, 0.05-1 part of a reversible photochromic pigment, 0.05-1 part of noctilucent powder and 0.7-3.5 parts of an auxiliary agent, the reversible photochromic pigment turns red under ultraviolet irradiation; the noctilucent powder emits blue light under the excitation of natural light or ultraviolet light, and the afterglow time is not less than 10 hours. The photovoltaic packaging adhesive film disclosed by the invention is used for an agricultural photovoltaic greenhouse, and can improve the light utilization rate, convert light rays such as ultraviolet rays into red light and blue light beneficial to crop growth, enhance photosynthesis and further improve the growth condition of crops.

The invention discloses an intelligent ultraviolet disinfection method and system. The system comprises a multiband ultraviolet light source assembly, an environment and object sensing assembly and an intelligent control assembly, the intelligent control assembly predicts disinfection effects under different wave bands through a built-in machine learning prediction model according to real-time environment parameters, disinfection object characteristics and personnel existence states, and dynamically generates an optimal control strategy. On the premise of ensuring that the disinfection effect reaches the standard, continuous safe operation in a man-machine coexistence environment is realized, the operation energy consumption and the equipment loss are reduced, and the device is suitable for multi-scene disinfection application of water bodies, air and object surfaces.

A disinfecting system includes a housing. An ultraviolet light (UV) source is secured to the housing and configured to emit UV light for disinfection of a target. A processor is secured to the housing in communication with the UV light source. The processor is configured to activate the UV light source for a selected amount of time suitable for disinfection of the target.

The invention discloses an ultra-high molecular weight polyethylene fiber waterproof membrane and a preparation method thereof, and belongs to the technical field of high polymer materials. Comprising the following steps: mixing ultra-high molecular weight polyethylene, modified master batch, an antioxidant, a lubricant, a light stabilizer, an ultraviolet light absorber, a coloring agent and a compatilizer, uniformly mixing, extruding and granulating by a twin-screw extruder to obtain mixture particles, dissolving the mixture particles in a solvent, and carrying out extrusion granulation by a twin-screw extruder to obtain the ultra-high molecular weight polyethylene composite material. The ultra-high molecular weight polyethylene fiber waterproof membrane is obtained after spinning and membrane spinning. Ammoniated cellulose nanocrystals and ammonium fluozirconate are grafted through an acid cross-linking agent and then serve as metal coordination nodes of the zirconium-based metal organic framework material, a Na-montmorillonite / graphene oxide / zirconium-based MOF material is prepared, the Na-montmorillonite / graphene oxide / zirconium-based MOF material is blended with polyethylene resin to prepare a modified master batch, the entanglement degree of an ultra-high molecular weight polyethylene molecular chain is reduced, the processability is improved, and the service life of the material is prolonged. Meanwhile, the wear resistance and the antibacterial property of the ultra-high molecular weight polyethylene film are improved.

The invention discloses a plant lactobacillus with light aging resistance and an application thereof. The preservation number of the plant lactobacillus cj001 disclosed by the invention is CGMCC (China General Microbiological Culture Collection Center) No.35419. The fermentation supernatant of the plant lactobacillus cj001 shows good anti-aging activity and in-vitro antioxidant activity, and the growth ability of HaCaT cells is promoted. After the combined fermentation product of the plant lactobacillus cj001 and the lactobacillus paracasei Grx701 is subjected to ultraviolet radiation, the proliferation of HaCaT cells can be promoted, the endogenous antioxidant capacity of human skin cells can be enhanced, the photooxidation damage can be effectively relieved, and the combined fermentation product has a wide application value in the field of preparation of products with antioxidant, anti-aging, anti-ultraviolet damage, anti-photoaging and the like.

The application discloses an antioxidant coating and a preparation method thereof, and relates to the technical field of coatings. The application first uses hydroxybenzotriazole to esterify and modify acrylic acid, and then uses the modified acrylic acid to prepare modified acrylic resin coating. The benzotriazole structure has high hardness and rigidity, and also has good ultraviolet absorption performance, which can reduce the degradation of the acrylic resin caused by ultraviolet rays and further improve the durability of the coating. The microcapsule wall material is modified by a hydrophobic compound, and then a new type of microcapsule wall material is prepared by coating an antioxidant. The microcapsule wall material modified by the hydrophobic compound can effectively prevent external moisture and oxygen from entering the microcapsule, improve the stability of the coating in a humid environment, and protect the antioxidant in the core material from the influence of the external environment. The antioxidant is slowly and continuously released in the coating, and the oxidation reaction of the coating is effectively inhibited for a long time. The antioxidant coating prepared by the application has the effects of wear resistance and durability.