16594 results about "Ultraviolet Radiations" patented technology

The present disclosure relates to a film formed with an organometallic precursor and an organic co-reactant, as well as methods for forming and employing such films. In particular embodiments, the films can be incubated after exposure to radiation, which can provide enhanced material differences between the exposed and unexposed regions. In non-limiting embodiments, the radiation can include extreme ultraviolet (EUV) or deep ultraviolet (DUV) radiation.

Provided are: a multilayer carbon nanotube assembly having high conductivity and good dispersibility in a dispersion medium; a multilayer carbon nanotube dispersion liquid; a conductive material; an electrode; a secondary battery; a planar assembly; a filter; an electromagnetic wave shield; and a pellicle for extreme ultraviolet rays.　Provided are: a multilayer carbon nanotube assembly comprising multilayered carbon nanotubes having a maximum length of 1000-30000 μm and Fe atoms, wherein the content ratio of Fe atoms to the total mass of the assembly is 0.5% by mass or more and less than 10% by mass; a multilayer carbon nanotube dispersion liquid; a conductive material; an electrode; a secondary battery; a planar assembly; a filter; an electromagnetic wave shield; and a pellicle for extreme ultraviolet rays.

There is provided an electric shaver having (a) a main body that includes a shaver head and a first pair of contacts through which a first voltage is provided, and (b) a cap that is installable on the main body in a first orientation or a second orientation, and when installed on the main body covers the shaver head. The cap has (1) a second pair of contacts that engage the first pair of contacts when the cap is installed on the main body, to receive the first voltage, and (2) a circuit having (i) a diode bridge that receives the first voltage via the second pair of contacts, and provides a second voltage of proper polarity for utilization by other components of the circuit, and (ii) an ultraviolet (UV) light source that utilizes the second voltage, and when ON, emits UV light that irradiates the shaver head.

The invention belongs to the technical field of composite coatings, and particularly relates to a corrosion-resistant and ultraviolet-resistant protective coating for wind power generation equipment and a preparation method thereof.The corrosion-resistant and ultraviolet-resistant protective coating for the wind power generation equipment is prepared from, by mass, 40-60 parts of gradient fluorosilicone modified polyurethane resin, 5-12 parts of core-shell type ZnO-coated MOFs composite particles, 1-3 parts of a curing agent, 1-3 parts of a curing agent and 1-3 parts of a curing agent. According to the invention, the problems of poor ultraviolet resistance, poor weather resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance and the like in the existing coating and the preparation process thereof are well solved; the shielding layer is single and incapable and has a poor self-repairing effect; and the coating toughness of an epoxy resin system is insufficient and cannot adapt to fatigue deformation of equipment under a vibration working condition.

The invention discloses unsaturated polyester resin for imitation jade handicrafts and a preparation method thereof, and belongs to the technical field of polyester resin. Comprising the following components: diethylene glycol, methylpropanediol, propylene glycol, maleic anhydride, phthalic anhydride, an antioxidant, a polymerization inhibitor, paraffin, a stabilizer, an ultraviolet light absorber, a whitening agent and a diluent. The weight ratio of the propylene glycol to the methyl propylene glycol is (1.0-1.3): 1, and the methyl propylene glycol accounts for 20-22% of the total amount of the dihydric alcohol; the weight ratio of maleic anhydride to phthalic anhydride is (0.46-0.52): 1; the preparation method comprises 1) adding the raw materials and the antioxidant into a reactor, carrying out heating, carrying out heat preservation for 0.5-1.0 h and continuing heating, 2) carrying out a reaction for 2-3 h after heating, carrying out dehydration until an acid value is 20-25 mgKOH / g, and 3) carrying out cooling, adding the auxiliary agent and carrying out uniform mixing so that the unsaturated polyester resin is obtained.

A smart device and method for certified sterilization of personal computing / communications devices (e.g., smartphones, tablets, phablets) and other like personal effects provides an interior sterilization chamber fully or partially enclosed by a housing. The smart device includes an object tray or receptacle situated within the chamber for sterilization of any objects secured therein. Within the sterilization chamber, illuminators direct ultraviolet-C (UV-C) or other like disinfecting radiation at the external surfaces of the object according to a predetermined sterilization cycle or program. The selected sterilization cycle is executed by controlling the activation and / or articulation of the illuminators and / or the object tray or receptacle (either or both of which may be articulated to maximize the irradiated surface area of the object). When a sterilization cycle is complete, the control processors generate a unique token memorializing the successful completion of the cycle upon the sterilized object (e.g., a uniquely identified mobile device).

The invention discloses a preparation method of flame-retardant silicone rubber resistant to long-term thermal aging, and relates to the technical field of high-molecular compound composition anti-aging rubber. The flame-retardant silicone rubber is prepared from the following components in parts by mass: 75 to 100 parts of methyl vinyl silicone rubber raw rubber, 18 to 28 parts of fumed silica, 20 to 35 parts of aluminum oxide trihydrate, 0.5 to 3 parts of platinum flame-retardant synergist, 2 to 5 parts of heat-resistant additive, 1.5 to 2.5 parts of structured control agent, 1 to 2 parts of cross-linking agent, 2 to 10 parts of anti-aging agent and 8 to 13 parts of fluorinated silicone rubber. Through a synergistic flame-retardant system, the silicone rubber disclosed by the invention shows obvious advantages in flame-retardant capability, can reach a higher flame-retardant grade, effectively delays flame propagation, and reduces the risk of fire disasters. The weather resistance of the silicone rubber is remarkably improved due to the ultraviolet absorption function and the anti-oxidation function of the anti-aging agent, so that the silicone rubber can effectively resist ultraviolet rays and oxidation under the long-term outdoor solarization condition, and the performance reduction and the appearance deterioration are reduced.

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.

The invention relates to an insulating weather-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings, and the powder coating comprises composite modified resin, a dual curing agent, a functional filler, a polyacrylate leveling agent, fumed silica, a benzotriazole ultraviolet light absorber, polytetrafluoroethylene wax powder and the like. A core-shell structure of the composite modified resin is designed, high insulativity is kept through a silane modified epoxy core layer, a weather-proof barrier is provided through an acrylic acid shell layer, and the phase separation problem is solved through interface chemical bonding; a dual-curing mechanism is designed, and isocyanate and acrylic hydroxyl react to form an interpenetrating network while an epoxy core layer is cured by anhydride; a filler synergistic effect is designed, silane coupling agent modified nano boron nitride forms a three-dimensional heat-conducting insulating network, and rutile type titanium dioxide is coated with silicon dioxide, so that ultraviolet aging is resisted. All the components cooperate with one another, so that the coating has excellent insulativity, weather resistance, adhesiveness and the like at the same time.

A mobile autonomous agricultural system comprises: a powered mobile unit for carrying agricultural equipment, and configured to move along rows of crops; an ultraviolet (UV) lighting panel for generating UV light; and a controller configured to control the travel of the mobile unit and operation of the UV lighting panel. The UV lighting panel comprises: a UV light source configured to generate UV light; and a plurality of shade elements arranged relative to the UV light source to direct the UV light in a primary illumination direction and to restrict emission of UV light from the UV lighting panel outside the primary illumination direction.

The invention discloses a transfer film as well as a preparation method and application thereof, and relates to the field of transfer films. The transfer printing film comprises a base film layer, a matte coating and a transfer printing coating which are sequentially overlapped, the transfer printing coating is formed by curing transfer printing coating paint; the transfer printing coating paint is prepared from the following raw materials in percentage by weight: 20 to 40 percent of thermosetting resin, 40 to 64 percent of first radiation curing resin, 10 to 32 percent of first monomer, 0 to 8 percent of first photoinitiator, 0 to 3 percent of catalyst, 0.5 to 2 percent of fumed silica and 0.1 to 3 percent of ultraviolet light absorber. The prepared triamine decorative plate has high hardness and good scratch resistance.

The invention relates to an antibacterial PP material and a preparation method thereof, and belongs to the technical field of high polymer materials. The antibacterial PP material is prepared from the following components in parts by weight: 60 to 80 parts of PP resin, 2 to 4 parts of a surfactant, 0.5 to 1.5 parts of a modified antibacterial agent, 0.5 to 1.5 parts of a flame retardant and 0.2 to 0.8 part of an antioxidant, titanium ions in the modified antibacterial agent destroy bacterial cell walls, quaternized intermediate products react with proteins of cell membranes to accelerate bacterial death, and in addition, phenolic hydroxyl groups absorb ultraviolet rays with different wavelengths to inhibit the light aging process; a compact and continuous carbon layer is formed during combustion of the flame retardant and cooperates with phosphorus-oxygen double bonds and melamine, the flame retardant efficiency is improved, aluminum hydroxide coats the surface, hydroxyl is subjected to heat absorption decomposition during combustion, the surface temperature of combustible materials is stabilized, meanwhile, an inert aluminum oxide layer is formed, and the flammability is reduced. The antibacterial PP material prepared by the invention not only has good antibacterial and anti-aging effects, but also has excellent flame retardant property.

The invention provides a radiotherapy patient skin injury real-time detection record management system based on image processing, and belongs to the technical field of radiotherapy patient skin injury real-time detection. Comprising a multispectral image acquisition module for imaging the skin of a patient at the same visual angle by adopting different spectrums to obtain three spectral images including near-infrared imaging, infrared imaging and ultraviolet imaging; a first identification module is used for fusing three spectral images to obtain an image data set, and a second identification module is used for constructing an epidermis injury coefficient # imgabs0 #, a dermis injury coefficient # imgabs1 # and a subcutaneous injury coefficient # imgabs2 # of the ith patient and evaluating the epidermis injury coefficient # imgabs0 #, the dermis injury coefficient # imgabs1 # and the subcutaneous injury coefficient # imgabs2 # respectively. A skin injury evaluation model is constructed, the comprehensive injury area ratio is calculated, the classification of injury levels is realized, data support is provided for a personalized treatment scheme, and a powerful auxiliary diagnosis tool is provided for a medical institution.

The invention relates to a cool master batch and a preparation method thereof, a cool polyester fiber and a cool polyester fiber fabric, the cool master batch is prepared from the following components in parts by mass: 70-90 parts of polyester and 10-30 parts of a cool agent, and the cool agent is prepared by hybridizing boron nitride and a carbon material according to a mass ratio of (98-99.9): (0.1-1) to obtain carbon hybridized boron nitride and adding a modifier for modification. According to the cool master batch, boron nitride is hybridized by adopting a small amount of carbon materials such as graphene and carbon nanotubes, so that the heat conductivity of the boron nitride material is improved, and meanwhile, the absorption of visible light, near-infrared rays and even ultraviolet rays by the graphene and the carbon nanotubes is eliminated, namely, the light absorption and heating effects are achieved; meanwhile, graphene and a carbon nano tube layer are inserted into boron nitride through ultrasonic hybridization, and then grinding is performed until the particle size is proper, so that compared with a processing mode of directly adding a dispersing agent, the boron nitride has a better dispersing effect and a more perfect heat-conducting network, and the dispersing effect of the cooling agent in the cooling master batch and the fiber is greatly improved.

A manicure curing device capable of preventing excessive ultraviolet irradiation is provided, including a housing having an internal cavity, in which the internal cavity has an upper surface, a left surface, a right surface and a lateral opening for entry and exit of a target; a first light-emitting module disposed at a front end of the upper surface; a second light-emitting module disposed at a rear end of the upper surface; a first control part configured to control the first light-emitting module to emit light and the second light-emitting module not to emit light; and a second control part configured to control the second light-emitting module to emit light and the first light-emitting module not to emit light.

A detection method for detecting fault of insulator discharge based on image recognition includes the following steps: building an ultraviolet image dataset for an electrical equipment, building a neural network model for insulator discharge detection based on YOLOV5-T, the neural network model includes a CBS module, a CST module, a Concat module, a 1D-attention module, an Upsample module and a Detect module, training the neural network model by utilizing the ultraviolet image dataset for the electrical equipment, to obtain a trained neural network model, and inputting images to be recognized into the trained neural network model, to obtain fault detection results. A detection device is configured to implement the detection method.

The invention relates to the technical field of waterproof coating detection, in particular to a waterproof coating aging life prediction method and system, which not only improve the prediction precision, but also enhance the scientificity and rationality of waterproof coating use. The method comprises the following steps: collecting a use environment parameter set and a use structure vector of a to-be-predicted waterproof coating; the use environment parameter set comprises humidity, temperature, ultraviolet intensity and pH value; the used structure vector comprises a coating area and a coating thickness; taking the use structure vector as a mapping condition, and extracting a corresponding structure aging influence factor from a pre-constructed structure influence factor matrix; obtaining component characteristic information and a standard environment parameter set of the waterproof coating to be predicted; performing deviation analysis on the use environment parameter set and the standard environment parameter set to obtain environment aging influence factors; and performing test analysis on the component characteristic information, and determining the standard service life of the waterproof coating under the standard environment parameter set.

To provide an ultraviolet curable adhesive composition which has excellent ultraviolet curability in the presence of oxygen, and excellent waterproof and dustproof properties, while exhibiting excellent shape stability after printing, and an ultraviolet curable adhesive composition which exhibits excellent curability when irradiated with ultraviolet light with high illuminance in the presence of oxygen, while achieving excellent adhesion and retention performance after curing, and also to provide a method for producing a multilayer body using the ultraviolet curable adhesive composition.SOLUTION: The present invention provides an ultraviolet curable adhesive composition which is used for printing and contains a radically polymerizable monomer, a photopolymerization initiator and a thickening agent, wherein the radically polymerizable monomer contains a compound with a cyclic structure containing a nitrogen atom, and the viscosity as determined using an E-type viscometer at 25°C and 10 rpm is 3 Pa s to 100 Pa s inclusive.SELECTED DRAWING: None

The utility model discloses a multifunctional warp-knitted ice-feeling heat-shielding sunscreen fabric which comprises first yarn and second yarn, the first yarn is full-dull special-shaped section chinlon filaments with the specification of FDY45Dtex / 48F, and the second yarn is high-temperature-resistant spandex filaments with the specification of 40dTEX. The first yarns and the second yarns are separately perforated for weaving, so that the first yarns cover the second yarns, namely, the first yarns are exposed on the inner side, and as the first yarns adopt the chinlon filaments with cool feeling, when the fabric body is in contact with the skin of a human body, the first yarns are in contact with the skin of the human body; the first yarns with larger areas are in contact with the skin of a human body, so that a better cool feeling is kept; moreover, the first yarns and the second yarns are thin, so that the fabric body is thin, and the air permeability is good; moreover, due to the fact that the first yarn and the second yarn are woven in a high-density mode, the density of the fabric body is high, ultraviolet rays are not prone to penetrating through the fabric body, and the sunscreen effect is achieved.

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 discloses a preparation method of a non-additive nitrogen-phosphorus-cerium synergistic flame-retardant polyurethane elastomer, and the polyurethane elastomer is prepared by taking isocyanate as a hard segment and poly (1, 4-butanediol adipate) as a soft segment, and compounding the hard segment and the soft segment with 2-amino-4-hydroxy-6-methylpyrimidine, a phosphorus reactive flame retardant and cerium oxide. The preparation method is simple, the process is easy to control, and the prepared polyurethane elastomer has good tensile strength; besides, the limit oxygen index of the polyurethane elastomer reaches 27.4, the polyurethane elastomer meets commercial standards of flame-retardant materials and UL-94 V-0 flame-retardant grade requirements, the ultraviolet band light transmittance is 0%, ultraviolet rays can be completely isolated, and the polyurethane elastomer has a good anti-oxidation function and can be applied to the industries of wires, cables, pipe profiles, films, general molding and the like.

The invention discloses a halogen-free flame-retardant TPU (thermoplastic polyurethane) material suitable for a charging pile cable and a preparation method of the halogen-free flame-retardant TPU material, belongs to the technical field of TPU material processing, and aims to solve the technical problem that the flame retardance and wear resistance of a TPU material for a cable in the prior art need to be further improved. The material comprises the following raw material components in parts by weight: 80-100 parts of a cross-linked thermoplastic elastomer, 10-20 parts of a modified filler, 10-20 parts of a flame-retardant chain extender, 3-5 parts of a stabilizer, 3-5 parts of an antioxidant, 3-5 parts of an ultraviolet light absorber and 3-5 parts of a lubricant, after the modified thermoplastic elastomer is prepared, the modified thermoplastic elastomer is activated and cross-linked with the flame-retardant cross-linking agent, a silane structure is introduced into the structure, the flame-retardant cross-linking agent and the modified filler enhance the flame-retardant capability of the material through a synergistic effect, and meanwhile, the compatibility of the material and an inorganic material is enhanced by hybridizing a polyurethane chain segment; the wear resistance, flame retardance and other properties of the material are improved.

The invention relates to the technical field of PET optical film coatings, in particular to a coating liquid for a PET optical film coating and a preparation method of the coating liquid. The coating liquid for the PET optical film coating is prepared from the following preparation raw materials in parts by mass: 20 to 25 parts of polyurethane acrylic resin, 10 to 15 parts of N-hydroxymethyl acrylamide, 1 to 2 parts of a coupling agent, 4 to 6 parts of a photoinitiator, 8 to 10 parts of modified nano titanium dioxide, 0.2 to 0.3 part of an ultraviolet light absorber and 40 to 47 parts of a reactive diluent. The coating liquid for the PET optical film coating prepared by the invention is excellent in adhesive force, weather resistance, scratch resistance, light transmittance and the like, and has a wide application prospect.

The invention discloses a corrosion-resistant and anti-aging plastic packaging film and a preparation method thereof, and is used for solving the technical problem that the corrosion resistance and ultraviolet aging resistance of a packaging film in the prior art need to be further improved. The polypropylene composite material comprises the following raw materials in parts by weight: 60-80 parts of modified polypropylene resin, 1-2 parts of a compound nucleating agent, 10-15 parts of a modified filler, 1-2 parts of an antioxidant, 1-2 parts of an ultraviolet light absorber, 1-2 parts of a light stabilizer and 3-5 parts of a plasticizer, the tensile property of the material is improved through crystal form remolding, and the flame retardant property of the material is improved through synergistic cooperation of an internal phosphate structure, an aluminum element and thiocyanuric acid and siloxane chain segments in the material; and the ultraviolet light absorber cross-linked by the compound nucleating agent, the modified filler and the siloxane chain segment are synergistically matched, so that the ultraviolet aging resistance of the material is remarkably improved.

The invention belongs to the technical field of water treatment and wastewater treatment, and provides an ultraviolet-ozone water disinfection device and method for cooling a lamp tube and synchronously generating ozone. The water disinfection device comprises an electrodeless ultraviolet disinfection unit, a synchronous cooling ozone generation unit, an ozone disinfection unit and a control unit, the electrodeless ultraviolet disinfection unit comprises a microwave generator, a waveguide, a microwave resonant cavity and a 185 / 254 nm dual-wavelength electrodeless ultraviolet lamp tube, and the synchronous cooling ozone generation unit comprises an air blower, an air inlet pipe, an air outlet pipe, a quartz sleeve and oxygen supply equipment. The ozone disinfection unit comprises a microporous aeration disc, and the control unit comprises a control box, a temperature sensor, an electromagnetic valve and an ozone concentration monitor. According to the invention, the dual-wavelength ultraviolet lamp tube is cooled by using large-flow air or air / oxygen mixed gas, and ozone is synchronously and efficiently generated, so that an ultraviolet-ozone combined water disinfection process is constructed, the promotion effect of ozone on water disinfection is fully utilized, the water disinfection effect is enhanced, and the applicability of the method to water bodies with different water qualities is improved.

The invention discloses a high-barrier polycrystalline silicon packaging film and a preparation method thereof, and relates to the technical field of packaging materials. The high-barrier polycrystalline silicon packaging film consists of a polyester film carrier and functional slurry, the functional slurry is prepared from the following raw materials in parts by weight: 15 to 25 parts of ethylene-vinyl alcohol copolymer, 10 to 18 parts of polyvinylidene chloride, 5 to 10 parts of modified nano montmorillonite, 8 to 15 parts of modified polylactic acid, 3 to 6 parts of tributyl citrate, 1 to 3 parts of antioxidant 1010, 1 to 3 parts of ultraviolet light absorber UV-531, 0.5 to 1.5 parts of nucleating agent NA-11, 1 to 2 parts of silane coupling agent KH-550 and 3 to 7 parts of modified silicon dioxide aerogel; 2 to 5 parts of vinyl trimethoxy silane, 1 to 3 parts of nano silver and 20 to 30 parts of deionized water. The high-barrier polycrystalline silicon packaging film has excellent barrier performance, and can effectively block oxygen, water vapor and the like. The polycrystalline silicon packaging film is good in mechanical performance, not prone to damage, antibacterial, antioxidant and anti-ultraviolet, the quality guarantee period of polycrystalline silicon can be prolonged, the product quality can be guaranteed, and the polycrystalline silicon packaging film has great application value in the field of polycrystalline silicon packaging.

The invention discloses an INS film with excellent comprehensive performance, which comprises a surface protection layer, an upper base material layer, a printing ink layer, a bonding glue layer and a lower base material layer which are sequentially superposed from top to bottom, the surface protection layer is prepared from the following raw materials in parts by weight: 75-135 parts of polyester polyol resin, 30-60 parts of hydroxy acrylic resin, 2-25 parts of an isocyanate curing agent, 2-17 parts of a closed curing agent, 2-25 parts of a chain extender, 0.5-8 parts of a catalyst, 0.5-2 parts of an antioxidant and 0.5-3 parts of an ultraviolet light absorber. According to the surface protection layer of the INS film, the high-temperature condition of a high-temperature plastic uptake procedure of the INS film in preparation of INS parts is well utilized, so that the closed curing agent is effectively excited to perform secondary cross-linking curing reaction. The INS film is good in surface chemical reagent resistance, has the characteristics of high heat stretch rate, high hardness and scratch resistance, has excellent ultraviolet irradiation yellowing resistance, and is particularly suitable for the field of in-mold decoration.

Disclosed herein is a novel electric insect zapper design incorporating a UV light source and a specialized fruit flies bait tray. This combination effectively attracts and eliminates a high percentage of fruit flies, offering a more efficient solution compared to traditional bug zappers. The bait tray, placed close to the UV light, uses diced fermenting fruits to specifically target fruit flies, leading to rapid and effective control of these pests in household environments.

The invention discloses a tap water advanced oxidation reactor, and relates to the technical field of tap water advanced oxidation, the tap water advanced oxidation reactor comprises a reactor shell, an ultraviolet lamp tube is installed in the reactor shell, the outer surface of the ultraviolet lamp tube is fixedly sleeved with a quartz sleeve, and the bottom of the reactor shell is provided with an inclination angle adjusting mechanism. According to the advanced oxidation reactor for tap water, by arranging the cleaning mechanism, the backwashing mechanism and the driving mechanism, cleaning of the outer surface of the quartz sleeve is achieved, meanwhile, all-directional backwashing of filter screen holes is facilitated, impurities accumulated in the filter screen holes can be effectively removed, and smoothness of a water inlet is guaranteed; the invention discloses a low-pressure ultraviolet reactor, which solves the problems that the resistance of water flow passing through a pipeline filter screen is increased and the water inlet speed is slowed down due to the condition that the existing equipment is inconvenient to regularly clean a low-pressure ultraviolet lamp tube in the low-pressure ultraviolet reactor and the pipeline filter screen is inconvenient to regularly clean and the pores of the pipeline filter screen are blocked due to long-time use.

Provided are: a multilayer carbon nanotube assembly having high conductivity; a multilayer carbon nanotube dispersion liquid; a conductive material; an electrode; a secondary battery; a planar assembly; a filter; an electromagnetic wave shield; and a pellicle for extreme ultraviolet rays.　Provided are: a multilayer carbon nanotube assembly including a multilayer carbon nanotube that has a median diameter of 80 nm or more in a volume-based particle size distribution obtained by a centrifugal sedimentation method when measured as an aqueous dispersion liquid at a concentration of 0.004% by mass, and has a rate of change in transmittance measured by a centrifugal sedimentation method of 0.3% or less per hour when measured as an aqueous dispersion liquid at a concentration of 0.2% by mass; a multilayer carbon nanotube dispersion liquid; a conductive material; an electrode; a secondary battery; a planar assembly; a filter; an electromagnetic wave shield; and a pellicle for extreme ultraviolet rays.