49results about How to "Increase contact angle" patented technology

The invention discloses a multifunctional composite hydrophobic membrane and a preparation method thereof, in the hydrophobic membrane, nano silicon dioxide, hydroxyl multi-walled carbon nanotubes and perfluorooctyl ethyl acrylate are polymerized to obtain a modified composite material, the modified composite material is added into a polyvinylidene fluoride-hexafluoropropylene copolymer, fibers are formed through an electrostatic spinning method, the fibers are deposited on a polyester net base lining, and the multifunctional composite hydrophobic membrane is prepared. Nano-silica and hydroxyl multi-walled carbon nanotubes are modified, agglomeration is effectively avoided, the hydrophobic membrane has good mechanical strength and toughness, and microcosmic multi-dimensional roughness of the surface of the membrane can be achieved by introducing an inorganic-organic nano hybrid material. Fluorine atoms in a perfluorooctyl ethyl acrylate structure have relatively low surface energy, so that the surface energy of the film can be remarkably reduced, the surface of the film has low surface energy and a rough structure, and the film is high in hydrophobicity and good in chemical stability.

The invention belongs to the technical field of anti-icing / deicing, and particularly relates to a photoelectric thermal super-hydrophobic composite film and a preparation method and application thereof. The composite film comprises a first polydimethylsiloxane substrate and an electric heating bottom layer attached to the first polydimethylsiloxane substrate, a photo-thermal super-hydrophobic coating is attached to the electric heating bottom layer, and the photo-thermal super-hydrophobic coating is a mixed coating formed by depositing silicon dioxide and cobalt on the surface of a second polydimethylsiloxane substrate. According to the combination of the photo-thermal characteristic and the super-hydrophobic characteristic of the composite film, the ice preventing and removing performance of the super-hydrophobic surface is further enhanced, and an aircraft ice control system is built based on the composite film. The photoelectric-thermal super-hydrophobic composite film is formed, the surface of the coating is of a micro-nano-scale coarse structure, the coating has super-hydrophobicity, passive anti-icing can be achieved, the photo-thermal characteristic and the super-hydrophobic characteristic are combined, icing detection and active and passive anti-icing are combined, anti-icing and anti-icing are more efficient, energy consumption is reduced, and anti-icing and anti-icing stability is improved.

The invention relates to a surface treatment method for stainless steel coated tableware, and belongs to the technical field of metal surface treatment. The corrosion resistance and light weight of the stainless steel tableware are achieved through base material pretreatment, chemical cleaning, activating treatment, heating in a vacuum environment, ion bombardment cleaning, preparation of a bottom Ti layer through a physical vapor deposition method, preparation of a middle TiC layer through a chemical vapor deposition method, preparation of a surface TiO2 layer through high-temperature oxidation and preparation of a hydrophobic and oleophobic layer through a chemical vapor deposition method. A Ti layer is formed on the contact stainless steel bottom layer through multi-layer titanium plating, a TiC layer is formed in the middle, a TiO2 layer is formed on the surface layer, better corrosion resistance and abrasion resistance are achieved through the complementary characteristic of materials of all the layers, and then the hydrophobic and oleophobic properties of the TiO2 surface layer are enhanced through chemical vapor deposition of fluoride.

The invention relates to a preparation method of a double-layer photo-thermal membrane distillation material, and belongs to the technical field of membrane distillation. According to the double-layer film, a polyvinylidene fluoride super-hydrophobic film serves as a hydrophobic base layer, a carbon nano tube / nano semiconductor material composite nano film serves as a photo-thermal layer, and the photo-thermal layer is attached to the hydrophobic base layer through polyurethane. The preparation method is characterized by comprising the following steps: (1) preparing an electrostatic spinning polyvinylidene fluoride super-hydrophobic membrane; and (2) preparing the electrostatic spinning carbon nano tube / nano semiconductor material composite nano film. Meanwhile, the invention provides a photo-thermal driving membrane distillation device. The double-layer photo-thermal membrane distillation material prepared by adopting the method has good photo-thermal conversion capacity, relatively high water vapor flux and long-term stability, and has a wide application prospect in the aspect of fresh water treatment.

The invention belongs to the technical field of coatings, and particularly relates to a transparent heat-insulating coating as well as a preparation method and application thereof. The transparent heat-insulating coating is prepared from modified nano aerogel, organic silicon modified acrylic emulsion, an auxiliary agent and water, the modified nano aerogel is obtained by modifying silicon dioxide nano aerogel by using fluorine-containing siloxane; the auxiliaries comprise a defoaming agent, a light stabilizer and a dispersing agent; the defoaming agent comprises a polysiloxane defoaming agent; the dispersing agent comprises an anionic polyacrylic acid sodium salt dispersing agent. Fluorine-containing siloxane is adopted to conduct hydrophobic modification on the silicon dioxide nano aerogel, the light transmittance of the coating can be guaranteed, and under the combined action of the fluorine-containing siloxane, the organic silicon modified acrylic emulsion, the light stabilizer, the specific type of dispersing agent and the defoaming agent, the coating is endowed with a good heat insulation effect under the condition that the light transmittance is not affected, and the coating has the good heat insulation effect. The light transmittance, the heat insulation property, the weather resistance, the pollution resistance, the acid rain resistance and the stability of the coating can be effectively improved.

The invention provides a fluorine-containing polymer wetting reversal agent suitable for shale reservoir protection as well as a preparation method and application of the fluorine-containing polymer wetting reversal agent. The preparation method of the reverse wetting agent comprises the following steps: adding ethylamine, triethylamine and deionized water into a reaction flask, and adding perfluorooctanoyl chloride into the system for reaction; after the reaction is completed, potassium hydroxide and 2-chloroethanol are continuously added for reaction; and after the reaction is completed, obtaining the N-ethyl-N-hydroxyethyl perfluorooctanamide. Adding nanoparticles, a silane coupling agent and ammonia water into the dispersant solution, and carrying out a modification reaction to obtain a modified nanoparticle solution; and adjusting the pH value of the obtained modified nanoparticle solution to 5-9, adding N-ethyl-N-hydroxyethyl perfluorooctanamide, introducing nitrogen to remove oxygen, adding an initiator, and carrying out thermal initiation polymerization reaction to obtain the composite material. The wetting reversal agent disclosed by the invention has excellent wetting reversal performance and a certain filtration reduction effect, and provides innovative thinking for development of a high-performance water-based drilling fluid technology.

The invention discloses a preparation method of a super-hydrophobic nano coating, and relates to the technical field of nano coatings, and the preparation method specifically comprises the following preparation steps: step 1, under the temperature condition of 20-50 DEG C, ultrasonically dispersing 1.5-3 parts of modified nano silicon dioxide in 60-80 parts of deionized water, adding 1-4 parts of modified graphene oxide, stirring at the rotating speed of 800-1000 r / min for 15-30 min, and then adding 1-3 parts of a dispersing agent, and stirring at the rotating speed of 800-1000 r / min for 20-30 min; adding 0.8-1.5 parts of a tin dioxide core / shell structure, and continuously stirring for 24-72 hours to obtain a super-hydrophobic nano coating solution; and 2, coating the surface of the cleaned substrate with the super-hydrophobic nano coating solution by adopting a spraying, brush coating, dip coating or spin coating method, and naturally airing to obtain the super-hydrophobic nano coating. According to the invention, hydrophobic groups are introduced to the surface of nano silicon dioxide, long-chain organic groups are connected to the surface of silicon dioxide, and the organic groups can reduce the surface energy of the coating and increase the contact angle of water drops on the surface of the coating, so that the hydrophobicity of the coating is improved.

The present invention relates to the technical field of cigars, and in particular to a cigar wrapper and binder and a preparation method thereof. The method uses biological enzymes to catalyze lignin cross-linking to prepare the wrapper and binder, and can prepare wrappers and binders of different colors by hot pressing at 80°C. The prepared cigar wrapper and binder are green, environmentally friendly and non-toxic, have strong physical properties, and have moisture-proof function.

The invention discloses a weather-resistant self-cleaning coating as well as a preparation method and application thereof, and belongs to the technical field of coating preparation. The self-cleaning coating is prepared from 50-70 parts of deionized water, 20-28 parts of protective glue, 20-35 parts of hydroxyethyl cellulose, 18-25 parts of latex, 5-8 parts of a preservative, 3-7 parts of a dispersing agent, 4-7 parts of a wetting agent, 1-2 parts of a defoaming agent, 3-5 parts of pigment filler, 3-5 parts of a coalescing agent and 2-4 parts of a thickening agent. The latex is composed of silicone acrylic latex and pure acrylic latex. By adding the raw materials with nano structures, a concave-convex shape similar to a lotus leaf is formed in the drying and film-forming process of the coating, so that dust particles are attached to the surface of the coating and are in a suspended state, and meanwhile, the contact angle between water and the surface of the coating is increased, so that water drops can roll down on the surface of the coating. In addition, hydrophobic substances are introduced into the solution, so that the coating is automatically layered in the drying and film forming process, a hydrophobic layer is enriched on the surface of the coating, it is guaranteed that the adsorbed polluting particles are separated from the surface of the coating under the scouring of wind and rain, and the self-cleaning purpose is achieved.

The invention provides a water-based anticorrosive coating and a preparation method thereof, and belongs to the technical field of coating preparation, and the preparation method comprises the following steps: S1, preparing a modified kanaba wax microneedle: adding molten kanaba wax into a glass fiber dispersion liquid, and uniformly stirring to obtain a mixed solution; pouring the mixed solution into a mold, cooling and curing, and drying to obtain the modified kanaba wax microneedle; s2, taking water-based acrylic resin and water-based epoxy resin, adding a solvent, stirring at a low speed, adding a wetting agent and a defoaming agent, and stirring at a high speed; and adding the modified TiO2 nanoparticles, siloxane-based acrylate, the modified SiO2 nanoparticles and the modified canaba wax microneedles, mixing, and uniformly dispersing to obtain the water-based anticorrosive paint. According to the technical scheme provided by the invention, the purpose of simultaneously improving the matte performance and waterproof performance of the coating is achieved, and the effect of keeping corrosion resistance is achieved.

The present invention discloses a coating agent and a preparation method and application thereof. The coating agent is obtained by polymerization of a siloxane hydroxy perfluoropolyether monomer (HOCH2CF2-Rf-O-CF2CH2O-X-Si(OR)3(I)), a fluorine-free monomer, an epoxy group-containing monomer, an organic siloxane monomer, an isocyanate monomer and an auxiliary agent. The siloxane hydroxy perfluoropolyether monomer in the present invention can play the role of a fluorosilicone polymer interpenetrating network structure, and can improve the shortcomings of fluorosilicone materials such as poor adhesion, low hardness and general strength. The electronic protective coating agent prepared therefrom has better moisture resistance, water and oil repellency, salt spray resistance and acid and alkali resistance.

The invention discloses a polyester resin composition for a powder coating, a matte powder coating and application thereof, the polyester resin composition for the powder coating comprises a high-acid-value resin A and a low-acid-value resin B, and the low-acid-value resin B is prepared from the following raw materials: polyol, an organosilicon intermediate, polyacid, an acidolysis agent and a catalyst. The super-weather-resistant high-acid-value resin A and the super-weather-resistant low-acid-value resin B have appropriate difference in performance indexes such as acid value and viscosity, and meanwhile, an organic silicon intermediate is only introduced into the super-weather-resistant low-acid-value resin B, so that a relatively large structural composition and reaction activity difference is generated between the super-weather-resistant high-acid-value resin A and the super-weather-resistant low-acid-value resin B; the prepared super-weather-resistant matte powder coating is outstanding in matting performance, has relatively low matting gloss without adding a matting agent, and also has a comfortable and soft surface appearance.

The invention provides an environment-friendly bidirectional three-dimensional waterproof moisture-permeable film spreading material and a preparation method thereof. The environment-friendly bidirectional three-dimensional waterproof moisture-permeable film spreading material is prepared from the following raw materials: a modified 107 monomer, a nano composite material, an inorganic filler, a defoaming agent, a cross-linking agent, a coupling agent, an accelerant and a diluent. The environment-friendly two-way three-dimensional waterproof moisture-permeable film spreading material is good in overall film-forming property, a layer of continuous, uniform, complete and integrated rubber-like elastomer is formed, and the material has good ductility and good tensile strength; the formed waterproof layer has protruding waterproof capability, anti-pressure capability and high and low temperature resistance, can achieve the effects of moisture prevention, mildew prevention, moss prevention, heat insulation, heat preservation and rust prevention of a coating, can be mechanically sprayed, can also be brushed in a rolling manner and can be coated in a blade manner, and is convenient to construct.

The invention discloses a highly waterproof membrane and a preparation method thereof, and the preparation method of the waterproof membrane comprises the following steps: S1, dispersing perfluorododecyl ethyl methacrylate, hexafluorobutyl methacrylate, itaconic acid glycidyl methacrylate and monopotassium phosphate in deionized water, then adding an initiator to carry out polymerization reaction, and carrying out centrifugal treatment on a product; s2, a product obtained after centrifugal treatment in the step S1 is evenly mixed with polyurethane resin, methacryloyloxypropyl cage type polysilsesquioxane and a coupling agent, then film forming is carried out, and the high-waterproofness waterproof film is prepared; the preparation method of the itaconic acid glycidyl methacrylate comprises the following steps: heating itaconic acid, triphenylphosphine, p-hydroxyanisole and glycidyl methacrylate in a reactor for reaction to prepare the itaconic acid glycidyl methacrylate. The waterproof film prepared by the invention has excellent waterproof performance.

The invention relates to a waterproof locking agent as well as a preparation method and application thereof. The preparation method of the waterproof locking agent comprises the following steps: (1) reacting alginic acid with amino alcohol to obtain an intermediate product; and (2) reacting the intermediate product obtained in the step (1) with organic ammonium chloride to obtain the waterproof locking agent. The preparation method of the waterproof locking agent provided by the invention is simple in preparation process, economical and efficient, and the prepared waterproof locking agent not only has good waterproof locking performance, but also is low in biotoxicity and good in biodegradability, so that the waterproof locking agent has green and environment-friendly performance; meanwhile, the surfactant has good foam inhibition performance, and the technical defect that in the prior art, due to the fact that strong and lasting foam is generated in the using process of the surfactant, the density of the drilling fluid fluctuates greatly, and the fluidity of the drilling fluid is reduced is well overcome.

The invention provides a glass sand filtering material and a preparation method thereof, and belongs to the technical field of water treatment. The particle surface of the material is rough, and the material has a micro-nano binary structure; the micron-sized structure is a non-uniformly distributed multi-layer structure, and the pore size is about 2-5 [mu] m; and the nano-scale pore diameter is 5-70 nm. The preparation method comprises the following steps: carrying out ultrasonic cleaning, drying, high-temperature annealing treatment and soaking in a buffer solution on the glass sand, then adding a villiaumite-containing aqueous solution for continuous soaking, taking out for cleaning, carrying out vacuum drying, carrying out heat treatment, then placing in an activating solution for reaction, and finally soaking, cleaning and drying in deionized water to obtain the glass sand. By preparing the novel glass sand filter material with the micro-nano binary structure, the glass sand filter material has the characteristics of high filtering precision, large specific surface area, self-cleaning property, high assimilative capacity, high antibacterial capacity and the like, the filtering performance of the filter material can be greatly improved, and the service life of the filter material is prolonged.

The application discloses a method for preparing a conjugated Schiff base in situ on cotton fabric and application thereof, and utilizes sodium periodate to oxidize cotton fabric to obtain aldehyde fiber, and then forms a loaded conjugated Schiff base cotton fabric in situ on the aldehyde fiber through a p-phenylenediamine and glyoxal polycondensation reaction, tests the UPF, tensile breaking strength, crease recovery angle and contact angle of the cotton fabric before and after finishing to represent changes in ultraviolet resistance, tensile property, crease recovery and hydrophilicity of the cotton fabric. + The in-situ grafting process of the cotton fabric has a smaller influence on the strength of the cotton fabric, and the crease recovery angle and the contact angle of the finished cotton fabric are obviously increased.

The application discloses a spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition and belongs to the technical field of thermal-conductivity interface materials.The spherical aluminum nitride silicon grease high-thermal-conductivity interface material composition comprises, in terms of weight parts, 50-80 parts of spherical aluminum nitride and 50-100 parts of modified silicon oil, the modified silicon oil is silicon oil grafted with adamantane molecules and fluorine-containing alkyl groups on the side chain, and the spherical aluminum nitride is prepared by using aluminum powder with low, medium and high particle sizes, wherein the spherical structure guarantees the fluidity of the silicon grease, the introduction of the adamantane molecules and the perfluoroalkyl molecules improves the heat resistance of the silicon oil and reduces the migration rate of the silicon oil, different particle sizes of the spherical aluminum nitride are used in combination for compounding, the filler with a smaller particle size can fill the gaps between the fillers with a larger particle size, a more perfect thermal-conductivity channel is constructed, the gap rate between the filler particles is greatly reduced, and the thermal-conductivity performance of the material is improved.

The invention relates to a high-strength and high-corrosion-resistance brazing aluminum alloy composite material for a radiator and a preparation method thereof.The high-strength and high-corrosion-resistance brazing aluminum alloy composite material comprises a brazing layer, a core layer and an anti-corrosion layer which are sequentially arranged, and the core layer comprises, by weight, 0.3%-0.7% of iron, 0.5%-0.8% of copper, 1.4%-1.8% of manganese, 0.1%-0.15% of zirconium, smaller than or equal to 0.05% of magnesium, smaller than or equal to 0.05% of zinc, smaller than or equal to 0.05% of titanium and the balance aluminum and inevitable impurities; and the anti-corrosion layer comprises the following element components in percentage by weight: 0.5-1.0% of silicon, 0.2-0.3% of iron, 0-0.1% of copper, 1.4-1.8% of manganese, 4.0-5.0% of zinc, 0.01-0.03% of titanium, 0.07-0.12% of zirconium and the balance of aluminum and inevitable impurities. The brazing aluminum alloy has the effect of improving the strength and corrosion resistance of the brazing aluminum alloy.

The invention relates to the technical field of high polymer materials, and discloses a polyester release master batch as well as a preparation method and application thereof. According to the release master batch, polyester resin is used as a matrix, specific modified organic silicon resin is introduced, and the organic silicon resin is prepared from polydimethylsiloxane containing silicon-hydrogen bonds, multiple hydrogen bond unit monomers containing unsaturated double bonds and fluorine-containing chain segment monomers through a hydrogen-silicon addition reaction. Multiple hydrogen bond groups and fluorine-containing alkyl chain segments are introduced to the same molecular chain at the same time, so that the resin is endowed with temperature responsiveness, excellent dispersity in a polyester matrix and ultralow surface energy after film formation. The polyester release master batch is prepared by adopting a melt blending extrusion process, and then the polyester release master batch and the polyester resin are blended and stretched to prepare the release film, so that the release film has stable and adjustable release force and excellent fingerprint resistance and pollution resistance, keeps good transparency and dimensional stability, and is suitable for the fields of electronic packaging, optical protection films, die cutting materials and the like.

This invention belongs to the field of functional textile materials and interface wettability control technology, and discloses a method for preparing cotton fabric with underwater superoleophobic and oil-water superhydrophobic properties and its application in oil-water separation. The method first dissolves nano-titanium dioxide and n-octanol in ethanol to obtain an alcohol phase mixture; then dissolves dopamine hydrochloride and Tris-HCl in deionized water to obtain an aqueous phase mixture; the two phases are mixed and the pH is adjusted to 8.0–8.5, allowing dopamine to oxidize and self-polymerize, forming a composite coating system synergistically with n-octanol, nano-titanium dioxide, and polydopamine; the cotton fabric is then impregnated and dried at 75–85°C for 2–4 h to obtain a cotton fabric with a surface polydopamine / n-octanol / nano-titanium dioxide composite coating. This fabric exhibits superhydrophilicity and oleophilicity in air, with underwater oil contact angles and oil-water contact angles both greater than 155°. Washing with ethanol, drying, and re-pre-wetting allow for reversible switching between the two superwetting properties. It can be used for the efficient separation of oil-water mixtures and oil-in-water and water-in-oil emulsions under gravity.

The invention discloses a system and a method for preparing oxygen based on lunar soil water ice purification and water electrolysis, and relates to the technical field of in-situ utilization of lunar water ice resources. The device comprises an electrolytic tank, an electrolytic anode and an electrolytic cathode are installed on the two sides of the interior of the electrolytic tank respectively, the position, located at the electrolytic cathode, of the top of the electrolytic tank is connected with a first circulating pump through a pipeline, the water inlet end of the first circulating pump is connected with a water ice purification mechanism through a pipeline, and the water ice purification mechanism is used for supplying water into the electrolytic tank. The water electrolysis device is designed in a cathode water inlet mode, the situation that a large amount of unreacted water is contained in prepared oxygen can be avoided, and therefore the oxygen with the single component is obtained. A new thought is provided for potential water resource purification on the lunar surface and oxygen preparation through electrolysis of water, on one hand, purification of water ice resources on the lunar surface can be achieved, on the other hand, high-purity oxygen is further prepared through electrolysis of the purified water in a cathode water inlet mode, and a technical support is provided for preparation of life conservation materials and lunar surface propellants on the lunar surface.

The invention discloses a red sandstone cultural relic anti-weathering coating and a preparation method thereof, and relates to the field of red sandstone cultural relic anti-weathering coatings, the coating comprises the following components by weight: 85-110 parts of absolute ethyl alcohol, 10-15 parts of a film forming component, 0.5-1.5 parts of a salt crystallization inhibitor, 0.5-2 parts of a pore forming agent, and 0.01-0.06 part of a composite nano modifier; and the film forming component comprises dodecyl trimethoxy silane. After the coating is used for the red sandstone cultural relics, the original color and appearance of the red sandstone cultural relics cannot be covered, and the reinforced and repaired red sandstone cultural relics also have the properties of high surface hardness, high hydrophobicity, high air permeability, excellent acid resistance, excellent salt resistance and the like.

The utility model relates to the technical field of trademark printing equipment, in particular to a scraper pressing mechanism and trademark printing equipment, which comprise a scraper, a first pressing cylinder, a cross beam and swing arms, two ends of the scraper are movably connected with two ends of the cross beam through the swing arms, and the cross beam is movably connected with the first pressing cylinder through a connecting top plate and a flexible connecting column. The two ends of the swing arm are movably connected with the cross beam and the scraping plate correspondingly, when the scraping plate is just in contact with the printing supporting plate, the scraping plate can be swung through the swing arm, the contact angle of the scraping plate is increased, the defect of non-uniform ink coverage is overcome, meanwhile, the flexible connecting column can adjust the contact pressure between the scraping plate and the printing supporting plate, and the printing efficiency is improved. The scraping plate pressing mechanism can adapt to materials without hard surfaces, and trademarks can be clearly printed on the materials.

The invention relates to a lithium slag-based anti-crack waterproof agent and a preparation method thereof, and belongs to the technical field of building materials such as cement and concrete. The lithium slag-based anti-crack waterproof agent comprises the following components in percentage by mass: 40%-55% of modified lithium slag, 18%-30% of a calcium ion compensating agent, 9%-19% of a complexing agent, 10%-23% of a precipitation component, 1%-5% of silicone zirconium and 0.1%-0.3% of expansible graphite, wherein the total mass of the raw materials of the lithium slag-based anti-crack waterproof agent is 100%; and spraying a water repellent on the surface of the lithium slag, uniformly mixing, and drying to obtain the modified lithium slag. The preparation method comprises the following steps: weighing the raw material components according to the mass fraction, uniformly mixing, and carrying out dry ball milling treatment to obtain powder, namely the lithium slag-based anti-crack waterproof agent. The lithium slag-based anti-crack waterproof agent can reduce concrete shrinkage cracks in a multi-stage targeted manner, and meanwhile, can enable the surface of concrete to have a relatively large contact angle, so that the concrete has excellent anti-seepage performance and waterproof effect.

The invention relates to a preparation method of high-refractive-index hydrophobic TPU (thermoplastic polyurethane). The preparation method comprises the following steps: selecting bisphenol A and 4, 4 '-diphenylmethane diisocyanate as raw materials, and controlling the mass ratio between 1 part of bisphenol A and 2-3 parts of 4, 4'-diphenylmethane diisocyanate; the preparation method comprises the following steps: adding a mixture of bisphenol A and 4, 4 '-diphenylmethane diisocyanate into a four-necked bottle reactor, selecting anhydrous dimethylformamide as a solvent, and controlling the ratio of the solvent to the total raw materials to be 2-3 parts; the preparation method comprises the following steps: slowly raising the temperature to 80-90 DEG C under the protection of nitrogen, and keeping the stirring speed at 400-600r / min and the reaction time at 1-2 hours, so that bisphenol A and 4, 4 '-diphenylmethane diisocyanate are subjected to primary polymerization reaction; the preparation method comprises the following steps: dropwise adding 15-25 weight percent of zinc sulfide nanoparticles into a prepolymer solution cooled to 40-50 DEG C, and controlling the particle diameter to be 15-20 nanometers; in a clean reactor, 3-6% by weight of potassium perfluorooctyl phosphate and 1-3% by weight of bisphenol S are added as hydrophobic modifiers.

The invention relates to a durable pressing silk cotton yarn-dyed fabric preparation process which comprises the following steps: soaking silk fibers into an anti-wrinkle reagent, standing to enable the anti-wrinkle reagent to be in full contact with the silk fibers, then taking out and drying the silk fibers to obtain treated silk fibers, spinning the treated silk to obtain a silk fabric, and drying the silk fabric to obtain the durable pressing silk cotton yarn-dyed fabric. The method comprises the following steps: dyeing silk cloth, and drying to obtain silk floss yarn-dyed fabric; the anti-wrinkle reagent is prepared from 180 to 200 parts of waterborne polyurethane emulsion, 21 to 31 parts of polyether amine composite anti-wrinkle agent, 14 to 20 parts of anti-ultraviolet agent, 3 to 5 parts of dispersing agent and 2 to 4 parts of flatting agent, and the polyether amine composite anti-wrinkle agent is prepared from a polyether amine compound A, a polyether amine compound B and an emulsifying agent. The method has the effect of improving the anti-wrinkle performance of the silk floss.

The invention provides a preparation method of a calcination-free low-temperature denitration catalyst and the catalyst, and belongs to the technical field of preparation of denitration catalysts.The method comprises the steps that a strong oxidant is added into a mixed salt solution for a hydrothermal reaction, and an active component oxide is obtained; the preparation method comprises the following steps: adding montmorillonite into deionized water, adding an organic modifier in a stirring state, and carrying out a hydrothermal reaction to obtain organic montmorillonite; the active component oxide and the organic montmorillonite are subjected to ball milling, tabletting and screening, and the calcination-free low-temperature denitration catalyst is obtained. According to the preparation method, montmorillonite modified by an organic modifier is taken as a carrier, an active component oxide is prepared by using an oxidation-reduction method, and the active component oxide is loaded on the carrier by using a ball milling method, so that the obtained MMnTiOx / OMt catalyst can be used for NH3-SCR (Selective Catalytic Reduction) denitration treatment of low-temperature flue gas after dust removal-desulfurization, and the conversion rate of NOx is greater than 95% and the selectivity of N2 is greater than 90% within 100-180 DEG C.

The present invention discloses a method for converging and removing the immersion boundary flow field of an IC lithography device based on an organic medium. A super oleophobic coating is uniformly sprayed on the part where the immersion liquid on the substrate of the IC lithography device is not sufficiently recovered, and then a heat treatment is performed; the immersion boundary flow field is filled with the immersion liquid through an immersion supply system to complete the converging; at the same time, the immersion liquid flows out for recovery; the immersion liquid is recovered through the immersion supply system until it completely flows out, and the removal is completed. The present invention sprays a super oleophobic coating on the part where the immersion liquid is not sufficiently recovered, which can increase the contact angle of the fluid on the surface of the substrate without affecting the exposure conditions and the fluid properties, improve the flow characteristics of the fluid on the substrate, eliminate fluid residues, and achieve the effects of uniform and complete filling and complete recovery of the organic medium; the present invention does not need to change the structure of the substrate itself, improves the use efficiency of the organic medium, reduces costs while improving production efficiency, and ultimately improves the exposure quality.

The present application relates to the technical field of optical thin films, and specifically discloses a method for preparing a super-hydrophobic optical film that can be applied to different wavelengths, comprising the following steps: S1, cleaning the surface of a glass substrate, polishing the surface, and then sputtering and depositing a silicon oxide film to obtain a deposited glass; S2, performing melt deposition of metallic copper on the surface of the deposited glass, followed by annealing and purging with a nickel gun to obtain a semi-finished product; and finally performing nano-dry etching to obtain a finished product having a hydrophobic effect, low reflectivity, and high transmittance.