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914 results about "Aqueous droplet" patented technology

Water droplet sensing systems and methods

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the material may be based on physical characteristics of the material (including fluid accumulation on the material).
Owner:LYTEN INC

Analysis of nucleic acid sequences

The present disclosure relates to methods, compositions and systems for droplet processing. For example, a method can include (a) partitioning a plurality of cells into a plurality of aqueous droplets, wherein an aqueous droplet of the plurality of aqueous droplets comprises a cell of the plurality of cells; and delivering a micellized lysis agent to the cell in the aqueous droplet.
Owner:10X GENOMICS INC

Static mixer for oil-water emulsification

ActiveCN119215713Aefficient mixingMix evenly and efficientlyFlow mixersMixing methodsAqueous dropletA-DNA
The invention discloses a static mixer for oil-water emulsification, and relates to the technical field of oil-water emulsification, the static mixer comprises an oil-water mixing pipe, a dosing pipe is fixed on one side of the top end of the oil-water mixing pipe close to a feed port, support rings are symmetrically fixed in the oil-water mixing pipe, and a DNA-imitated double-helix channel is fixed between the two groups of support rings; the DNA-imitating double-helix channel is fixed between the two groups of supporting rings on the inner side of the oil-water mixing pipe, the shark-imitating placoid scale ribs which are distributed in an array manner are fixed on the inner wall of the DNA-imitating double-helix channel, a unique bionics principle is utilized, an efficient mixing phenomenon in nature is simulated, efficient and uniform mixing of fluid in a steady-state environment is realized, and the oil-water mixing effect is improved. According to the device, fluid can be guided to generate micro vortexes, full contact and collision of oil drops and water drops can be promoted, the emulsification efficiency and stability are remarkably improved, an external power source is not needed, efficient mixing can be achieved by means of energy of the fluid, and the device is compact in overall structure, easy and convenient to install and suitable for various-scale emulsification processes.
Owner:SANYA SCI & EDUCATION INNOVATION PARK WUHAN UNIV OF TECH

Method for preparing synthetic quartz sand by sol-gel method

The invention discloses a method for preparing synthetic quartz sand by a sol-gel method, which comprises the following steps: mixing silicon alkoxide and an alcohol solvent, and stirring to form a homogeneous solution marked as L1; mixing an acidic catalyst, an alcohol solvent and ultrapure water to form a mixed solution, and recording the mixed solution as L2; dropwise adding the L1 solution into the L2 solution, and continuously stirring and hydrolyzing to obtain sol; dropwise adding ammonia water into the sol until the pH value is 5-10, and standing in a vacuum drying oven to obtain wet gel; and drying and sintering the wet gel to obtain the high-purity synthetic quartz sand. The gelation time is accurately controlled through acid-base two-step catalysis, the production period is shortened, and the production efficiency is improved; meanwhile, the size and uniformity of silicon dioxide particles are controlled by controlling the dripping speed of a silicon source, so that the sintering temperature of the synthesized quartz sand is greatly reduced, and the solvent is recycled through distillation when wet gel is dried, so that the production cost is reduced, and the pollution to the environment is reduced.
Owner:JIANGSU HENGXIN QUARTZ TECH CO LTD

Preparation method of photo-thermal super-hydrophobic coating with excellent anti-icing / deicing performance in low-temperature and high-relative-humidity environment

The invention discloses a preparation method of a photo-thermal super-hydrophobic coating with excellent anti-icing / deicing performance in a low-temperature and high-relative-humidity environment, which comprises the following steps of: firstly, growing photo-thermal Cu-MOF (Metal Organic Framework) nano particles on the surfaces of fibrous clay mineral nano particles with low heat conductivity coefficient in situ to construct composite photo-thermal particles with a two-stage nano / nano structure; the preparation method comprises the following steps: preparing nano-particles, then carrying out low surface energy modification on the nano-particles, introducing a low-heat-conductivity-coefficient binder, inducing the binder to generate phase separation through a non-solvent to form a micron-scale binder / low-surface-energy nano-particle aggregate, and finally, spraying to construct the photo-thermal super-hydrophobic coating with a three-level micro / nano / nano structure. The three-level micro / nano / nano structure of the coating simultaneously endows the coating with excellent photo-thermal performance in a low-temperature and high-relative-humidity environment and Cassie-Baxter state stability of liquid drops on the surface of the coating, so that the coating has excellent passive anti-icing / frosting and active deicing / defrosting performance in the environment. The low heat conduction characteristic of the coating further inhibits heat exchange between the base material and water drops, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the invention also has the advantages of simple preparation method, large-area preparation and the like, and lays a solid foundation for the practical application of the photo-thermal super-hydrophobic anti-icing coating.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES +1

Low-temperature thermochromic super-hydrophobic anti-icing coating and preparation method thereof

The invention relates to the technical field of super-hydrophobic anti-icing coatings, in particular to a low-temperature thermochromic super-hydrophobic anti-icing coating and a preparation method thereof. According to the specific technical scheme, low-temperature thermochromic phase change microcapsules and nanoscale hydrophobic silicon dioxide particles are dispersed in an organic solvent, an adhesive and a curing agent are added, and the super-hydrophobic surface with the micro-nano hierarchical structure, the latent heat regulation function and the temperature visual feedback function is constructed through a spraying method. The obtained coating has excellent super-hydrophobicity, and water drop adhesion can be effectively reduced; the phase change microcapsules contained in the coating release latent heat during low-temperature solidification, and surface temperature reduction and icing are remarkably delayed; and meanwhile, the color of the coating is obviously and reversibly changed along with the reduction of the temperature, so that the visual early warning of the low-temperature icing risk is realized. The problems that a traditional super-hydrophobic coating is insufficient in low-temperature anti-icing long-term effect and lacks an early warning function are solved, the super-hydrophobic coating is suitable for low-temperature anti-icing occasions, and the sensing-regulation-protection integrated function is achieved.
Owner:SCNU QINGYUAN INSTITUTE OF SCIENCE & TECHNOLOGY INNOVATION CO LTD +1

Laminated iron core and method for manufacturing the same

Provided is a laminated iron core including: a laminate of electromagnetic steel sheets and a granular oxide that contains magnetite and covers a side surface of the laminate, in which a contact angle of a water droplet until 20 minutes elapses after dropping the water droplet on the side surface covered with the granular oxide is 80° or more. When heights of peaks detected in ranges of 2θ of 41° to 42° and 38° to 39° in XRD measurement of the side surface covered with the granular oxide are represented by H1 and H2, respectively, H1 / (H1+H2) is 0.8 or more.
Owner:MITSUI HIGH TEC INC

Method for preparing catalyst material based on hydrothermal method

The invention provides a method for preparing a catalyst material based on a hydrothermal method, and relates to the technical field of exhaust gas aftertreatment catalytic materials. The method comprises the following steps: dissolving cerium salt and transition metal salt in deionized water to form a precursor solution; taking hexadecyl trimethyl ammonium bromide as a template agent, and dissolving the template agent in the precursor solution; dropwise adding ammonia water into the precursor solution to adjust the pH value to alkalescence; putting the precursor solution into a reaction kettle for high-temperature hydrothermal treatment; filtering, drying and grinding the solution subjected to hydrothermal treatment, and then carrying out high-temperature roasting treatment; and performing segmented reduction on the roasted sample by using hydrogen to obtain the catalyst material. The preparation method has remarkable technical effects in the aspects of increase of active sites of the catalyst, increase of specific surface area, remarkable improvement of future application prospect and performance and the like.
Owner:UNIV OF SCI & TECH OF CHINA

Transparent super-hydrophobic cultural relic protection material and preparation method thereof

The invention discloses a transparent super-hydrophobic cultural relic protection material and a preparation method thereof.The method comprises the steps that firstly, a hydrolyzed silane coupling agent is grafted to the surface of silicon dioxide, then amino of the hydrolyzed silane coupling agent reacts with carboxyl of chain fatty acid, chain alkyl is grafted to the surfaces of silicon dioxide particles, and the transparent super-hydrophobic cultural relic protection material is obtained. The prepared material has excellent super-hydrophobicity, the contact angle of water drops on the surface of a coating is large, the rolling angle of the water drops on the surface of the coating is small, the water drops are difficult to stay on the surface of the coating, and therefore water permeation is effectively prevented. Meanwhile, due to the transparency of the silicon dioxide particles and the chain fatty acid, the coating can keep high transparency, and the original color and pattern of the cultural relic cannot be shielded or changed. The silane coupling agent serves as a bridge for connecting the silicon dioxide particles and the chain fatty acid, the chemical bonding effect in the coating can be enhanced, the coating is not prone to aging and cracking, the material has the advantages of being good in high temperature resistance and ultraviolet light resistance, and therefore the preservation life of the cultural relics is prolonged.
Owner:SHAANXI UNIV OF SCI & TECH

Benzyl alcohol rectification method and device capable of reducing generation of high-boiling-point substances

The invention relates to the technical field of benzyl alcohol preparation, and provides a benzyl alcohol rectification method and device capable of reducing generation of high-boiling residues, the rectification method comprises the following steps: S1, benzyl chloride and an alkali solution are subjected to a hydrolysis reaction, and then reaction liquid is subjected to oil-water separation to obtain an oil-phase material and a water-phase material; s2, adding the oil-phase material obtained in the step S1 into a stirring kettle, adding recycled water generated after desalting the water-phase material, stirring, and adding alkali liquor into the stirring kettle at the same time; and S3, carrying out oil-water separation on the oil-water mixture in the step S2, and transferring an oil phase into a rectifying tower for rectification. After oil-water separation of the reaction liquid, stirring an oil phase with recycled water in a stirring kettle to elute brine water droplets entrained by the oil phase, and adding a trace amount of strong alkali into the stirring kettle at the same time, so that the rectified raw oil carries water and the trace amount of strong alkali to be alkaline; hCl generated by hydrolysis of benzyl chloride is prevented from forming an acidic environment in a gas phase and a liquid phase of the whole tower, so that benzaldehyde and benzyl alcohol are prevented from generating a condensation reaction under an acidic catalysis condition to generate a high-boiling residue.
Owner:QIANJIANG XINYIHONG ORGANIC CHEM

Cl-Bi carbon dioxide reduction electrocatalyst, preparation method thereof and application of Cl-Bi carbon dioxide reduction electrocatalyst in preparation of formic acid through catalytic reduction of carbon dioxide

The invention discloses a Cl-Bi carbon dioxide reduction electrocatalyst, a preparation method thereof and application of the Cl-Bi carbon dioxide reduction electrocatalyst in preparation of formic acid through catalytic reduction of carbon dioxide, and belongs to the technical field of electrocatalyst materials. The preparation method comprises the following steps: preparing a sodium chloride solution, adjusting the pH value with acid, adding Bi2O3, carrying out a stirring reaction, washing a reactant, and drying to obtain BiOCl; the preparation method comprises the following steps: dispersing BiOCl, carbon black and naphthol in ethanol, carrying out ultrasonic treatment to obtain ink, dripping the ink onto hydrophobic carbon paper, drying, and reducing under negative voltage to obtain the Cl-Bi carbon dioxide reduction electrocatalyst. The prepared Cl-Bi carbon dioxide reduction electrocatalyst is simple in preparation method, free of pollution, rich in raw material and low in price, and the Cl-Bi carbon dioxide reduction electrocatalyst has high formic acid production selectivity, high formic acid yield and excellent stability.
Owner:CHINA UNIV OF MINING & TECH

Steam-water separator for steam

A steam-water separator for steam relates to the field of steam-water separators and comprises a separator barrel and a partition plate, a spiral liquid separation assembly is mounted on the lower end face of the partition plate and comprises a connecting plate and a rotating bottom ring, the connecting plate is fixedly connected to the partition plate, and the rotating bottom ring is rotatably connected to the lower end face of the connecting plate. The lower end face of the rotating bottom ring is rotationally connected with a liquid separation barrel, and a spiral plate is fixedly arranged on the end face of the outer side of the liquid separation barrel. According to the steam-water separator for the steam, part of water drops generated on the central inner cavity are effectively prevented from being attached in the follow-up water vapor rising process, the water vapor separation effect is effectively prevented from being reduced, and the situation that scale appears on the side wall of the central inner cavity of the liquid separation barrel in the long-time use process can be avoided; the steam-water separation effect is good, energy is saved and consumption is reduced.
Owner:HANGZHOU GUOFENG SCI & TECH DEV CO LTD

Polymer with efficient and long-acting demulsification and coalescence functions for emulsified water as well as preparation method and application of polymer

The invention discloses a polymer with efficient and long-acting demulsification and coalescence functions of emulsified water as well as a preparation method and application of the polymer. The polymer is prepared from the following components in parts by mass: 100 parts of a monomer, 1-4 parts of an initiator, 2-6 parts of a surfactant and 300-600 parts of water, the monomer is composed of the following components in parts by mass: 15-30 parts of an acrylate zwitterionic monomer, 3-7 parts of a crosslinking monomer, 10-20 parts of a vinyl polyether monomer and 43-72 parts of other acrylate monomers, and the surfactant is a mixture of a zwitterionic surfactant and polyvinyl alcohol. The polymer provided by the invention can be applied to surface coating modification of various porous filter materials, can enable emulsified water drops to contact and collide with the surface in the process of flowing through the porous filter materials and then instantly generate efficient demulsification coalescence to form large water drops to realize separation, and has a wide application prospect in the field of coalescence separation of emulsified water in fuel oil.
Owner:SOUTH CHINA UNIV OF TECH +1

A method for preparing a photothermal superhydrophobic coating with excellent anti-icing / deicing performance in low temperature and high relative humidity environments

The present invention discloses a preparation method of a photothermal super-hydrophobic coating with excellent anti-icing / de-icing performance under a low temperature and high relative humidity environment, first by in situ growth of photothermal Cu-MOF nanoparticles on the surface of low thermal conductivity fibrous clay mineral nanoparticles, constructing a two-level nano- / nano-structured composite photothermal particle, which is then subjected to low surface energy modification and introduced into a low thermal conductivity binder, and a binder is induced to phase separate to form a micron-scale binder / low surface energy nanoparticle aggregate by a non-solvent, and finally a photothermal super-hydrophobic coating with a three-level micro- / nano- / nano-structure is constructed by spraying. The three-level micro- / nano- / nano-structure of the coating simultaneously gives the coating excellent photothermal performance and the Cassie-Baxter state stability of the droplet on the coating surface under a low temperature and high relative humidity environment, so that it has excellent passive anti-icing / frosting and active de-icing / defrosting performance in this environment. The low thermal conductivity of the coating further suppresses the heat exchange between the substrate-water droplets, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the present invention has the advantages of simple preparation method and large-area preparation, laying a solid foundation for the practical application of photothermal superhydrophobic anti-icing coatings.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES +1

Preparation method of nanofiltration membrane with high magnesium-lithium selectivity

The invention discloses a preparation method of a nanofiltration membrane with high magnesium and lithium selectivity. The method mainly comprises the following steps: (1) preparing an aqueous phase solution containing macrocyclic amine; (2) soaking a polyether sulfone base membrane into the water-phase solution in the step (1) for a certain time, taking out the base membrane, and removing redundant water drops; (3) preparing a normal hexane solution containing acyl chloride; (4) soaking the base membrane in the step (2) into the n-hexane solution in the step (3), and reacting for a certain time; (5) soaking the membrane in the step (4) into a secondary reaction aqueous solution containing an amine monomer, and reacting for a certain time; and (6) putting the obtained composite membrane into a drying oven, and heating for a period of time to obtain the high-magnesium-lithium selective nanofiltration membrane. The nanofiltration membrane prepared by the method has relatively high magnesium-lithium selectivity.
Owner:WANHUA CHEM GRP CO LTD

Deodorizing and dedusting tower and operation method thereof

The invention relates to a deodorization and dust removal tower and an operation method thereof, and belongs to the technical field of waste gas treatment.The deodorization and dust removal tower comprises a tower body and further comprises a baffling mechanism; a spraying mechanism; a cleaning mechanism; and a demisting mechanism. The baffling mechanism and the cleaning mechanism are used in cooperation, the flowing distance of water mist and gas is increased through the baffling mechanism, the water mist and the gas can be attached to the interior of a baffling ring of the baffling mechanism, particulate matter in the gas is absorbed by the water mist, and the particulate matter in the gas is absorbed by the water mist through work of the cleaning mechanism; the flow velocity of the water mist and the gas in the baffling mechanism is further slowed down, so that particulate matters in the gas are further absorbed by the water mist, and meanwhile, the cleaning mechanism can clean down water drops adhered to the inner wall of the baffling mechanism, so that on one hand, the amount of the water mist adsorbed in the baffling mechanism is increased; on the other hand, the flowing speed of the water mist and the gas is reduced, the absorption amount and the absorption efficiency of the particulate matter in the gas are improved, and therefore the treatment efficiency of the particulate matter in the gas is improved.
Owner:BAODING BOTIAN ENVIRONMENTAL PROTECTION TECH CO LTD

Wear-resistant super-hydrophobic heat-insulating coating and preparation method thereof

The invention discloses a wear-resistant super-hydrophobic heat-insulating coating material which is composed of a resin layer coated on the surface of a base material and HNTs / SiO2 composite aerogel covered on the surface of the resin layer, and the surface of the HNTs / SiO2 composite aerogel is hydrophobically modified by fluorosilane; the contact angle between the surface of the coating and water is 156-161 degrees, and the rolling angle of water drops on the surface of the coating is 3.2-6.4 degrees; the HNTs / SiO2 composite aerogel powder material has the functions of wear resistance, super-hydrophobicity and heat insulation at the same time and is firmly bonded with the resin layer, and the resin layer provides enough adhesive force; the halloysite nanotube (HNTs) / SiO2 composite aerogel is adopted, the defects that traditional SiO2 aerogel is low in strength and large in brittleness are overcome, the heat insulation effect of the coating can be further improved, and meanwhile the obtained super-hydrophobic coating further has super-high abrasion resistance and adhesive force.
Owner:HUAXIN CEMENT CO LTD

Anti-icing wire, manufacturing production line and manufacturing method thereof

The invention discloses an anti-icing wire, a manufacturing production line and a manufacturing method of the anti-icing wire. The anti-icing wire comprises a wire core; the inner-layer aluminum wire is arranged on the outer side of the wire core; the outer-layer aluminum wire is arranged on the outer side of the inner-layer aluminum wire; and the outer surface hydrophobic layer is made of a hydrophobic material and is arranged on the outer side of the outer-layer aluminum wire. The invention discloses a production line for manufacturing an anti-icing wire. The production line is provided with a first cleaning device, a wire sand blasting machine, a second cleaning device, a wire coiling device, a first spraying chamber, a first drying chamber, a second spraying chamber and a second drying chamber which are used for producing the anti-icing wire. The surface of the wire is coated with a large amount of hydrophobic materials, the capture rate of a power transmission line on supercooled water drops can be reduced, the adhesive force between ice and the coating can be reduced, the super-hydrophobic coating can delay freezing of the water drops on the surface of the coating, and therefore deicing or icing prevention is achieved. The anti-icing cable is especially suitable for being used in icing areas, and has a good anti-icing effect.
Owner:JIANGSU TONGGUANG TRANSMISSION LINES TECHNOLOGY CO LTD

Methods for preventing inter-droplet transfer of a fluorescent product in aqueous droplets by forming a soluble complex with cyclodextrin

A method for retaining fluorescent molecules within aqueous droplets suspended in an emulsion includes combining a plurality of living cells, a plurality of fluorescent molecules, and a plurality of cyclodextrin molecules in an aqueous solution. The method also includes emulsifying the aqueous solution with a hydrophobic fluid to form the aqueous droplets. At least one of the aqueous droplets includes (i) a single living cell or a single cell species in a homogenous aggregate of the plurality of living cells, (ii) at least one fluorescent molecule of the plurality of fluorescent molecules, and (iii) at least one cyclodextrin molecule of the plurality of cyclodextrin molecules.
Owner:PATTERN BIOSCIENCE INC

Integrated modular system for automated generation of droplets in microfluidic applications and method thereto

an integrated, modular system for automated aqueous droplet generation with high monodispersity. The system includes dynamic feedback control of droplet size and input pressure. Input pressure is generated by two piezoelectric micropumps. Droplet sizes are determined via light intensity measurement in an LED-photodiode setup. The system includes a wireless communication and has a low enough power consumption for battery-powered operation.
Owner:TALLINN UNIVERSITY OF TECHNOLOGY

Super-amphiphobic high-reflection coating and preparation method thereof

The invention provides a preparation method of a super-amphiphobic high-reflection coating, and relates to the technical field of self-cleaning materials. A one-step method is adopted, and the core is to prepare functional super-amphiphobic particles with micro-nano structures. A micro-nano composite structure is constructed by a method of regrowing silicon dioxide on the surfaces of micron-scale barium sulfate, titanium dioxide or calcium carbonate particles, and then surface modification is performed to prepare the super-amphiphobic particles. And mixing the prepared particles with a water-based emulsion, alcohol-soluble or ester-soluble resin, a coalescing agent, a defoaming agent, a wetting leveling agent and an adhesive according to a certain ratio to prepare the coating. And finally, a coating with high reflectivity and super-amphiphobic performance is formed on the surface of the substrate, so that the contact angle of water drops and oil drops on the surface of the material is greater than 150 degrees.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Gas exchange during electrowetting operations

Provided herein are methods for replenishing dissolved gas to aqueous droplets on a digital microfluidic device. Provided herein are methods of cell-free protein synthesis, optimized cell-free protein synthesis (CFPS) reagents, and methods for optimizing CFPS reagents to increase protein expression yield. The method is suitable for protein expression on microfluidic devices having hydrophobic surfaces by circulating a fill fluid to introduce additional oxygen.
Owner:NUCLERA LTD

Tray for preventing condensate water of humidifying bottle from dripping

The utility model provides a humidifying bottle condensate water anti-dripping tray, relates to the field of medical products, and is applied to a humidifying bottle, the top end of the humidifying bottle is sleeved with a lantern ring, the lantern ring comprises two supporting shells which are connected through a hinge, the outer side of the end of one supporting shell is fixedly connected with a connecting plate connected with the other supporting shell, and the other end of the supporting shell is fixedly connected with the connecting plate. A humidifying bottle is arranged at the top end of the hinge, a supporting plate extending downwards is arranged in the middle of the side face of one supporting shell, a tray is arranged at the top end of one side of the supporting plate and located below the humidifying bottle, and a splash-proof pad is arranged on the inner side of the tray. Meanwhile, the clamping blocks of the connecting plate move to the inner sides of the grooves of the supporting shells, the two supporting shells fixedly wrap the top end of the humidification bottle, meanwhile, the tray is installed at the top end of one side of the supporting plate through the installation blocks, the tray is convenient to disassemble and assemble, and water drops are prevented from falling off.
Owner:舒城县人民医院

Low salinity water production in crude oil processing

A side-stream is separated from an oil phase stream that is discharged from a crude oil separator in a gas-oil separation plant. The side-stream contains water and oil. At least a portion of the oil phase stream that is discharged from the crude oil separator in the gas-oil separation plant is flowed to a desalter in the gas-oil separation plant. An electric field is applied across the side-stream to coalesce aqueous droplets present in the side-stream to form an aqueous phase. The aqueous phase is separated from the oil of the side-stream. At least a portion of the aqueous phase is evaporated to form a wastewater phase and a vapor phase. At least a portion of the vapor phase is condensed to produce a wash water. The wash water is flowed to the desalter. The wash water can be referred to washing water or dilution water.
Owner:SAUDI ARABIAN OIL CO

Super-hydrophobic modal fabric and preparation method thereof

The invention relates to a super-hydrophobic modal fabric and a preparation method thereof. The fabric can be prepared by the following method: firstly, preparing a reaction solution containing double-bond graphene oxide; secondly, preparing a graphene oxide modified polyacrylic acid coating agent from the reaction liquid containing the double-bond graphene oxide, acrylic acid, styrene, butyl acrylate and the like; then, uniformly mixing the graphene oxide modified polyacrylic acid coating agent with a pore-forming agent solution to prepare a composite coating agent; thirdly, the modal fabric is subjected to coating finishing; finally, ultrasonic washing and drying are conducted, and the super-hydrophobic modal fabric is prepared. The surface of the prepared super-hydrophobic modal fabric contains graphene, the apparent contact angle range of water drops on the modal fabric ranges from 153 degrees to 156 degrees, and the super-hydrophobic modal fabric shows good super-hydrophobicity; after 10 times of water washing, the hydrophobic performance of the modal fabric is still not obviously weakened.
Owner:WUHAN TEXTILE UNIV

A transparent super-hydrophobic cultural relics protection material and preparation method thereof

The present invention discloses a transparent super-hydrophobic cultural relic protection material and a preparation method thereof. The method first grafts a hydrolyzed silane coupling agent onto the surface of silica, and then utilizes the amino group of the hydrolyzed silane coupling agent to react with the carboxyl group of a chain fatty acid to graft a chain alkyl group onto the surface of silica particles. The prepared material has excellent super-hydrophobicity, a large contact angle of water droplets on the coating surface, and a small rolling angle, making it difficult for water droplets to stay on the coating surface, thereby effectively preventing moisture penetration. At the same time, due to the transparency of the silica particles and the chain fatty acid, the coating can maintain a high transparency and will not block or change the original color and pattern of the cultural relic. The silane coupling agent acts as a bridge connecting the silica particles and the chain fatty acid, which can enhance the chemical bonding inside the coating, making the coating less prone to aging and cracking, and giving the material good high-temperature resistance and the advantage of resisting ultraviolet light, thereby extending the preservation life of the cultural relic.
Owner:SHAANXI UNIV OF SCI & TECH

Coating with both anti-icing and photothermal conversion properties and preparation method thereof

The present application discloses a method for preparing a coating having both anti-icing and photothermal conversion, the steps of which are: uniformly dispersing phase-change microcapsules coated with phase-change materials in a Tris-HCl buffer solution to form a capsule buffer; adding dopamine, carboxybetaine acrylamide, copper sulfate and hydrogen peroxide to the capsule buffer, stirring, reacting, filtering, washing and drying after the reaction is completed to obtain double-shell microcapsules; placing the double-shell microcapsules in a polyvinylpyrrolidone aqueous solution containing an anti-settling agent and a defoaming agent to form a coating. The present application also provides a coating prepared by the preparation method. The present application utilizes the synergistic effect of the excellent binding ability of PCBAA with non-freezing water, the thermal energy storage of phase-change materials and the photothermal conversion effect of PDA to maximize the anti-icing effect on the coating surface and effectively slow down the occurrence of surface ice accumulation behavior. The water drop contact angle of the coating formed by the coating can reach 7.8°, and the freezing delay time at -18°C is 190.3s.
Owner:NANJING TECH UNIV

Water droplet humidifying aromatherapy machine (KJR-321)

ActiveCN309813436SAromatherapyAqueous droplet
1. The name of the design product: water droplet humidifying aromatherapy machine (KJR-321). 2. The use of the design product: for increasing air humidity and air fragrance by atomizing and volatilizing water and spices. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.
Owner:WEIZHOU KEJINRUN ELECTRONIC TECH CO LTD +1

Oil-water separation device for oil exploitation

The utility model provides an oil exploitation oil-water separation device which comprises a separation shell, an oil-water separation box and a separation assembly, a feeding pipe and an oil outlet pipe are inserted into the separation shell, the oil-water separation box is arranged in the separation shell, and the feeding pipe and the oil outlet pipe penetrate through the outer wall of the oil-water separation box and extend into the oil-water separation box. Flexible waterproof pieces are arranged at the joints of the feeding pipe and the wall of the oil-water separation box and the joints of the discharging pipe and the wall of the oil-water separation box, and the separation assembly comprises a partition plate and an oil separation plate which are arranged in the oil-water separation box, a layered feeding pipe arranged on the partition plate and an ultrasonic vibrator arranged on the bottom wall of a layered groove; the ultrasonic vibrator is used for driving oil-water mixed liquid in the layering tank to slightly vibrate at high frequency quickly, so that oil and water in the layering tank are separated quickly, oil drops with lower density move upwards quickly, water drops with higher density move downwards quickly, the oil-water mixed liquid is layered in the layering tank, and the oil-water separation speed is increased.
Owner:邢宽宏