28results about How to "Improve antifouling performance" patented technology

This invention discloses a method for preparing a fluorine-free superhydrophobic nano-silica cotton fabric, belonging to the field of superhydrophobic textile technology. The invention utilizes trichlorooctadecylsilane (OTS), γ-glycidyl etheroxypropyltrimethoxysilane (KH-560), and hexadecyltrimethoxysilane (HDTMS) to modify silica, obtaining a fluorine-free superhydrophobic coating. This coating, applied to the surface of the cotton fabric, results in a fabric with both low surface energy and a rough surface structure, exhibiting excellent superhydrophobic properties. Furthermore, it also imparts durability, self-cleaning, and stain-resistant capabilities to the hydrophobic coating.

The invention discloses a medical silica gel sealing ring material and a preparation method thereof, and relates to the field of silica gel materials. When the medical silica gel sealing ring material is prepared, mica powder, phytic acid, diglycidyl ether and allyl glycidyl ether are uniformly mixed and react to obtain modified mica powder; the preparation method comprises the following steps: reacting 4-(2-aminoethyl) phenylboronic acid with 3, 3 '-dihydroxy-[1, 1'-biphenyl]-4, 4 '-diformaldehyde to obtain a graft; the preparation method comprises the following steps: reacting vinyl silicone oil, thioglycerol and methacryloylethyl sulfobetaine to obtain modified silica gel; uniformly mixing the modified silica gel, the modified mica powder and the graft, and reacting to obtain the medical silica gel sealing ring material. The medical silica gel sealing ring material prepared by the invention has excellent flame-retardant, anti-aging, antifouling and mechanical properties.

The utility model discloses an anti-climbing ground plug type lawn lamp which structurally comprises a ground plug, a lamp body, a swing ring, a solar cover and an auxiliary plug, the ground plug and the auxiliary plug are fixed to the lower surface of the lamp body, the swing ring comprises a connecting layer, a pulling strip, a connector, a super-hydrophobic silica gel coating and a rubber block, and the connecting layer and the super-hydrophobic silica gel coating are of an integrated structure. The connecting layer is fixed to the upper surface of the lamp body, the rubber block, the pulling strip and the connector are of an integrated structure, the connector is connected with the inner side of the super-hydrophobic silica gel coating, the rubber block is connected with the solar cover, and the ground plug is in a small-to-large form to assist the whole to smoothly enter a lawn and the super-hydrophobic silica gel coating, and the characteristic of the ground plug can effectively prevent snails from adsorbing and climbing. When a small number of snails climb upwards continuously, the super-hydrophobic silica gel coating can bend and droop under the action of gravity, gravity center balance of the snails is damaged, the snails slide down, and therefore the situation that the luminous energy absorption efficiency of the solar panel is affected by mucus residues is avoided, and the maintenance-free lasting antifouling effect is achieved.

The application discloses a kind of multistage synergic covalent grafting type hydrolysis-resistant self-cleaning PET submarine cable monofilament and preparation method, the monofilament includes three parts of core layer, skin layer and surface layer, the core layer is the high viscosity polyethylene terephthalate resin containing carbodiimide anti-hydrolysis agent;Skin layer is the modified PET resin of functional polysiloxane covalent grafting, wherein the functional polysiloxane has epoxy end group or isocyanate end group, and main chain has Si-H group;Surface layer is the fluorine-free low surface energy layer formed by polyvinyl long side chain alkane polysiloxane and residual Si-H group in skin layer through hydrosilylation reaction.The application significantly improves the durability of monofilament in humid heat environment, so that it is suitable for long-term humid heat service environment such as marine cable and industrial fabric, and can maintain stable mechanical strength and self-cleaning performance for a long time.

The application discloses a weather-resistant hydrophobic antireflection and antifogging film and a preparation method thereof, relates to the technical field of films, and the weather-resistant hydrophobic antireflection and antifogging film comprises a bottom layer, an intermediate layer, a top layer and a modifier layer; the bottom layer, the intermediate layer and the top layer are prepared by coating bottom layer coating sol, intermediate layer coating sol and top layer coating sol on a glass substrate in sequence and solidifying; the bottom layer coating sol, the intermediate layer coating sol and the top layer coating sol all comprise tetraethyl orthosilicate, anhydrous ethanol, water, hydrochloric acid and a template agent; and the modifier is prepared by mixing a nano cerium oxide emulsion and a substrate material emulsion. The antireflection and antifogging film provided by the application not only has excellent transmittance, but also has excellent hydrophobicity and weather resistance.

This invention discloses a chromium-free passivation and fingerprint-resistant composite treatment method for high-aluminum-zinc-aluminum-magnesium steel plates, belonging to the field of metal sheet surface protection technology. The specific steps of the method are as follows: A fine-grained high-aluminum-zinc-aluminum-magnesium steel plate is selected as the substrate, and firstly, it undergoes multi-stage cleaning and hot air drying. Next, the dried substrate is immersed in a composite chromium-free passivation solution to form a passivation precursor film. Then, a porous inorganic passivation layer is prepared through low-temperature hot air curing. Subsequently, a modified fingerprint-resistant resin is roller-coated onto its surface to form an organic precursor film. Finally, a constant-temperature curing treatment is performed to produce a chromium-free passivation and fingerprint-resistant composite film. This invention uses multi-stage cleaning and chromium-free passivation processes on the high-aluminum-zinc-aluminum-magnesium steel plate to form a porous inorganic passivation layer, enhancing corrosion resistance. Then, a composite protective film layer is constructed by reverse roller coating of modified fingerprint-resistant resin, achieving functional integration. This process improves the environmental protection and protective properties of the plate, meets the needs of multiple fields, and expands the application scenarios and market scope.

This application relates to a water heater device and its anti-scaling method. The water heater device includes a water heater body, a water pump, a heat exchanger, an inlet pipe, an outlet pipe, and a main controller. The water pump and heat exchanger are located within the water heater body. The water pump is connected to the inlet pipe, and the heat exchanger is connected to the outlet pipe. The water pump is used to pump the water flowing in from the inlet pipe to the heat exchanger. The method includes: after detecting that the water heater body has stopped operating, controlling the water pump to run, so that the water flows through the heat exchanger to remove the residual heat from the heat exchanger; obtaining the outlet water temperature of the water heater body; determining whether the outlet water temperature of the water heater body is less than or equal to a preset temperature threshold; if the outlet water temperature of the water heater body is less than or equal to the preset temperature threshold, controlling the water pump to shut off. The anti-scaling method for water heaters provided by this application can reduce hardware and maintenance costs, improve anti-scaling effect, and enhance ease of use.

The present application relates to the technical field of pressure sensitive adhesive, in particular to a plastic film type low VOC environment-friendly pressure sensitive adhesive product.The plastic film type low VOC environment-friendly pressure sensitive adhesive product is composed of the following raw materials: methyl methacrylate, butyl acrylate, diacetone acrylamide, 2-ethylhexyl acrylate, vinyl trimethoxysilane, hydroxyethyl acrylate, reactive emulsifier, anionic emulsifier, non-ionic emulsifier, ammonium persulfate, sodium bisulfite, adipic acid dihydrazide, sodium bicarbonate, nano calcium carbonate, deionized water and pH regulator.The plastic film type low VOC environment-friendly pressure sensitive adhesive product has excellent holding power, peeling strength, durability and environmental protection.

The utility model discloses a novel breathable waterproof fabric, which relates to the related field of fabrics and comprises a fabric, a protective layer and a detection mechanism, the protective layer is adhered and connected to the top of the fabric, the detection mechanism is connected to the top of the protective layer in a sewing manner, and the protective layer is arranged. The comfort, the antibacterial property, the waterproof air permeability and the antifouling property of the fabric are improved through the multiple material layers, meanwhile, the reflective strips play a role in warning and marking at night, and meanwhile, the anti-static property, the warm keeping property and the wear resistance of the fabric are improved through the multiple protective layers.

The utility model discloses a joint and liquid drainage joint relates to medical instrument technical field, in order to solve the problem that the residual liquid drops at the joint of current separation operation cannot be avoided, the joint includes: the joint body, and the outer periphery of joint body is equipped with the limiting sliding slot extending along the length direction, and the inner water absorption structure of the adapter is equipped with the sliding part of sliding connection with the limiting sliding slot, and the end of joint body is extended under the adapter in the state of receiving, to receive the liquid that drops from the joint connecting place, and the end of joint body is not extended under the adapter in the state of not receiving, so setting, can effectively prevent the liquid drop on the ground of dialysis department, thereby avoiding the pollution and infection caused by liquid drop.

The present invention belongs to the technical field of ultra-high molecular weight polyethylene protective nets, and specifically relates to a material for ultra-high molecular weight polyethylene protective nets and its preparation process. The material for ultra-high molecular weight polyethylene protective nets consists of two parts: an inner layer base fiber and an outer attached coating; the inner layer base fiber is composed of ultra-high molecular weight polyethylene resin powder, vinyl-terminated hyperbranched polysiloxane, mercapto-functionalized graphene oxide nanosheets, photoinitiator, modified hindered amine light stabilizer and antioxidant; the outer attached coating is composed of vinyl-terminated fluorosilicone resin liquid, microcapsule antifouling agent with capsaicin as the core material, methylated nano-silica particles, hydrogen-containing silicone oil and platinum catalyst; the material for ultra-high molecular weight polyethylene protective nets prepared by the present invention has excellent weather resistance, antifouling property and mechanical properties.

The application provides an antifouling composite material and a preparation method and application thereof. The antifouling composite material is prepared from 100 parts by weight of a polymer matrix and 1-100 parts by weight of a slow-release filler, wherein the polymer matrix is a polyurethane with a main chain capable of being degraded into non-toxic small molecules, and the slow-release filler is halloysite nanotubes loaded with an antifouling agent. The polyurethane of the application can be continuously degraded into non-toxic small molecules, and the slow-release filler can release the antifouling agent for a long time, and the combination of the two guarantees the continuous dynamic updating of the surface of the composite material and excellent dynamic / static long-term antifouling performance. The antifouling composite material provided by the application can be coated on the surface of marine engineering equipment to form a long-term protection circle around the marine engineering equipment and prevent marine organisms from adhering or growing on the surface of the equipment.

The invention belongs to the field of nylon fibers, and particularly relates to a self-cleaning anti-fouling nylon slice and a preparation method thereof. The self-cleaning nylon slice provided by the invention comprises polyamide, modified polyamide, a functional filler and a nucleating agent, the modified polyamide is prepared by polymerizing diamine, long carbon chain dibasic acid, a functional monomer containing a silicon-oxygen bond and a functional monomer containing a fluorine ether bond. Fluoroether bonds and silicon-oxygen bonds are introduced into the molecular structure of nylon through the functional monomer containing fluoroether bonds and the functional monomer containing silicon-oxygen bonds, and the silane coupling agent is adopted to modify nano titanium dioxide and graphite carbon nitride, so that the anti-fouling effect and the self-cleaning effect of the nylon are effectively improved.

The invention relates to the technical field of pipes, in particular to a functional master batch for a high-weather-resistance and high-antifouling net cage pipe as well as a preparation method and application of the functional master batch. The invention relates to a functional master batch for a high-weather-resistance and high-antifouling net cage pipe. The functional master batch for the high-weather-resistance and high-antifouling net cage pipe is prepared from the following raw material components: a flexible solubilizer, a functional filler, a weather-resistant master batch and a functional antifouling agent, the functional filler is titanium dioxide coated hollow glass beads of which the surfaces are modified by a silane coupling agent; the weather-resistant master batch comprises the following raw materials: polyethylene, a light stabilizer, an antioxidant and carbon black. The functional master batch for the high-weather-resistance and high-antifouling net cage pipe has the characteristics of good antifouling property, good weather resistance, long-acting antifouling property and excellent mechanical property of the net cage pipe; the technical problems that an existing net cage pipe is insufficient in weather resistance, fast in heat absorption, high in temperature, prone to degradation in mechanical property and poor in antifouling durability, and the mechanical property and the antifouling property of the net cage pipe are contradictory are solved.

The application belongs to the technical field of reverse osmosis membrane manufacturing, and particularly relates to a high-efficiency antifouling and sterilization reverse osmosis composite membrane and a preparation method thereof. The high-efficiency antifouling and sterilization reverse osmosis composite membrane is formed by forming a polyamide desalination layer on a polysulfone base film, and then coating a copolymer of a zwitterion with double bonds and thioctic acid on the surface of the polyamide desalination layer. The zwitterion is any one of SBMA, VPPS and VPES. The product has the advantages of high flux, high desalination rate, excellent antifouling performance, stable operation and the like. The preparation method has the advantages of simple process, high industrial production efficiency, low cost, rapid copolymerization reaction and no need of additional catalyst, and is suitable for large-scale coating production.

This invention relates to the field of artistic coatings, specifically to a method for preparing and applying a high-hardness, polishable artistic coating. The invention uses heavy calcium carbonate powder and talc powder in the coating, and also adds glass powder, achieving filler gradation, improving density, and enhancing transparency during polishing. To achieve high hardness, the invention uses a compound of silicone-acrylic emulsion and potassium silicate solution. To achieve a more marble-like mirror effect, the invention uses a combination of nano-sized inorganic potassium silicate solution and micron-sized silicone-acrylic emulsion, combined with carnauba wax, resulting in a denser coating film. The invention hyperbranchs the glass powder, grafting multiple terminal hydroxyl groups onto its surface, and then further aminations it, grafting a large number of amino groups onto the glass powder. Finally, polydopamine is used to combine it with talc powder, improving the dispersibility of the talc powder and enhancing the hardness of the coating.

The present invention has an object to provide an antifouling coating film superior in surface smoothness, and an antifouling coating composition for forming the same, and also provide a substrate with an antifouling coating film having the antifouling coating film, and a method for producing the same. The antifouling coating composition of the present invention contains at least one curable silicone (A) selected from (1) and (2) below and a slipping agent (C): (1) a polyorganosiloxane having a methyl isobutyl ketoxime group at both ends; (2) a polyorganosiloxane having a hydroxy group at both ends, and organosilane represented by the following formula (I):         R1aSiX4-a     (I) wherein R1 represents a substituted or unsubstituted hydrocarbon group having 1 or more and 10 or less carbon atoms, X is a methyl isobutyl ketoxime group, and a is 0 or 1.

The application discloses a kind of nano ceramic superhard powder coating and preparation method thereof, belong to powder coating preparation technical field.The nano ceramic superhard powder coating described in the application is composed of the following components by weight: 10-20 parts of aluminum oxide, 4-12 parts of zirconium oxide, 5-14 parts of silicon carbide, 2-8 parts of titanium dioxide, 3-7 parts of composite organic auxiliary agent, 53-65 parts of composite resin, 0.5-1.3 parts of dispersing agent, 1-2 parts of anhydrous ethanol, 1-4 parts of leveling agent and 0.4-2.4 parts of coupling agent.The coating prepared by the above method has excellent hardness, chemical corrosion resistance, wear resistance and easy cleaning performance.

This invention discloses an antifouling microbubble for bioorthogonal capture, comprising: hollow glass microspheres; an antifouling coating disposed on the surface of the hollow glass microspheres, wherein the antifouling coating is a phase-change BSA; and a capture layer formed by depositing an N-hydroxysuccinimide derivative on the antifouling coating. This invention also discloses a method for preparing the antifouling microbubble for bioorthogonal capture and its applications. The antifouling microbubble for bioorthogonal capture of this invention, utilizing surface bioorthogonal groups, can be used for the specific capture of bioorthogonally modified target substances, exhibiting high speed and efficiency, and possessing broad application systems and prospects.

This invention discloses a desalination and concentration system and process for waste acid in the sulfuric acid process for titanium dioxide production. The waste acid solution containing ferrous sulfite is evaporated and concentrated to a sulfuric acid concentration of 75-85%, then mixed with the waste acid from the titanium dioxide production process to a sulfuric acid concentration of 35-45%. After filtration, the ferrous sulfite solid is recovered. The waste acid after sedimentation enters a multi-effect evaporation system, where it is evaporated and concentrated to a sulfuric acid concentration of 50-65%, with most of it recycled for production. A portion of the 50-65% sulfuric acid is further concentrated to a concentration of 75-85% and mixed with the ferrous sulfite waste acid solution. Due to the common ion effect, a large amount of inorganic salts, especially sulfates, precipitate and crystallize. After crystallization and precipitation, the inorganic salts are recovered by filtration, and the supernatant enters the multi-effect evaporation system. This avoids the problem of large amounts of crystalline salt generated during the evaporation and concentration process causing blockages in system pipelines or equipment, ensuring long-term stable operation of the system.

The present application relates to a kind of PHEMA hydrogel and its preparation method, belong to hydrogel technical field, including the following mass parts raw materials: 2-hydroxyethyl methacrylate, reinforcing agent, solvent, crosslinking agent, initiator and slow-release agent;Preparation method includes the following steps: crosslinking agent is dispersed in 2-hydroxyethyl methacrylate, then reinforcing agent and slow-release agent are dispersed in solvent, and ultrasonic treatment is carried out, subsequently initiator is added dropwise to system, and make the reaction reflux 3 hours at 80 DEG C, after reaction, wash with deionized water, and dry, obtain PHEMA hydrogel.The technical scheme in the present application, by incorporating [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, can enhance biocompatibility and antifouling performance, also can adjust the water content and pore of hydrogel, play the role of balancing optical transparency and oxygen permeability.

The utility model relates to oxidation equipment technical field, the utility model provides a double -effect catalytic oxidation device, it includes the material pipeline, injects the pipe for injecting the reagent to the material pipeline, mixes the axle one end rotation setting on the lateral wall of material pipeline, can mix reagent and water through rotation, the box has the processing cavity with the material pipeline intercommunication, the board piece sets up on the lateral wall of box, and the board piece surface has titanium dioxide coating, the sleeve sets up on the lateral wall of box, the ultraviolet lamp tube sets up in the pipe cavity, is used for the illumination titanium dioxide coating on the board piece surface and mixed reagent and water. The titanium dioxide coating on the board piece surface is excited to produce electron -hole pair under the ultraviolet lamp tube illumination, and electron is captured to generate super oxygen free radical by O2, and the hole can directly oxidize organic matter or react with water to generate hydroxyl radical, simultaneously, titanium dioxide can also be used as catalyst to realize the efficient activation of H2O2, and continuously generate free radical. The problem that traditional catalyst is easy to pollute, deactivation has been solved.

The present application relates to the technical field of ceramic tiles, and particularly relates to a soft-light marble ceramic tile and a preparation process thereof. The preparation process comprises the following steps: S1. polishing the surface of the marble ceramic tile by using an elastic grinding block, a diamond grinding brush and a fiber brush in sequence; wherein the number of meshes of the elastic grinding block > the number of meshes of the fiber brush >= the number of meshes of the diamond grinding brush; S2. continuously coating soft-light wax on the surface of the marble ceramic tile; S3. continuously coating anti-fouling wax on the surface of the marble ceramic tile to obtain the soft-light marble ceramic tile. By using the elastic grinding block with high number of meshes, the diamond rubber brush with low number of meshes and the fiber brush in sequence to process the surface of the tile, the cutting amount of the tile surface in the polishing process is reduced, the concave-convex structure of the tile itself will not be excessively polished, the exposure of pores in the glaze layer is reduced, and the slip resistance and the stain resistance of the ceramic tile are effectively enhanced; then the soft-light wax and the anti-fouling wax are coated on the surface of the tile in sequence, the slip resistance and the stain resistance of the surface of the tile are improved, and meanwhile the ceramic tile has the characteristic of soft light.

This invention provides a multi-component transparent coating composition that yields a transparent coating film with excellent car wash resistance, polishability, and stain resistance. The multi-component transparent coating composition comprises a first liquid containing a hydroxyl-containing acrylic resin (A), a polycarbonate polyol (B), and a melamine resin (C), and a second liquid containing a polyisocyanate compound (D). The hydroxyl-containing acrylic resin (A) has a glass transition temperature exceeding 10°C, and the melamine resin (C) has a weight-average molecular weight of 400 or more and less than 4000. Relative to 100 parts by weight of the total solids of the hydroxyl-containing acrylic resin (A), the polycarbonate polyol (B), and the melamine resin (C), the content of the polycarbonate polyol (B) is 6 to 17 parts by weight, and the content of the melamine resin (C) is 1 part by weight or more and less than 10 parts by weight.

The invention relates to the field of anti-fingerprint agents, and particularly discloses perfluoropolyether phosphoric acid, a preparation method thereof and an anti-fingerprint agent. The preparation method of the perfluoropolyether phosphoric acid comprises the following steps: S1, carrying out ammonolysis reaction on perfluoropolyether monomethyl ester and trihydroxymethyl aminomethane to obtain an intermediate I; s2, carrying out phosphorylation reaction on the intermediate I and phosphorus oxychloride to obtain an intermediate II; and S3, hydrolyzing the intermediate II to obtain the perfluoropolyether phosphoric acid. The perfluoropolyether phosphoric acid prepared by the invention can form a P-O-M bond with a metal oxide, so that the adhesive force of an anti-fingerprint agent on metal and a metal oxide substrate is remarkably improved, and the antifouling property can be maintained for a long time; the perfluoropolyether phosphoric acid contains three phosphoric acid groups, so that the hydrophobic antifouling effect and the friction resistance of a coating after the anti-fingerprint agent is cured into a film can be further enhanced, the durability of the coating is improved, and the perfluoropolyether phosphoric acid is particularly suitable for the surfaces of metal and metal oxide substrates.

The application provides a hydrophilic anti-pollution MXene / PVDF composite membrane and a preparation method and application thereof, and relates to the technical field of separation membrane manufacturing.The preparation method of the hydrophilic anti-pollution MXene / PVDF composite membrane provided by the application comprises the following steps: mixing PVDF powder, a pore former and an organic solvent to obtain a PVDF casting solution; mixing the PVDF casting solution and a few-layer MXene nanosheet dispersion solution to obtain a MXene / PVDF casting solution; coating the MXene / PVDF casting solution onto a non-woven fabric, and sequentially performing coagulation bath and drying to obtain the hydrophilic anti-pollution MXene / PVDF composite membrane.The hydrophilic anti-pollution MXene / PVDF composite membrane provided by the application enhances hydrophilicity and improves BSA rejection rate, exhibits high anti-pollution property, excellent reusability and chemical stability, and has a simple process and is suitable for large-scale industrial production.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.

The application discloses N-octyl-2-hydroxybenzamide grafted polyaspartic ester polyurea resin and a preparation method and application thereof, and the preparation method comprises the following steps: S10, uniformly mixing N-octyl-2-hydroxybenzamide grafted isocyanate prepolymer 15-35 parts, a solvent 2-10 parts and a catalyst 0.1-0.5 parts by weight to obtain an A component; S20, uniformly mixing polyaspartic ester 8-20 parts, a leveling agent 0.1-0.5 parts and a defoaming agent 0.1-0.5 parts by weight to obtain a B component; and S30, mixing the A component and the B component. The N-octyl-2-hydroxybenzamide grafted polyaspartic ester polyurea resin has better antifouling performance and mechanical properties than those of the prior art.