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148results about How to "Guaranteed hydrophobicity" patented technology

Method of producing formed circuit component

An electroless plating layer with strong adhesion is optionally formed only on a portion to be a circuit, and other non-circuit portions are not roughened. A laser beam (2) with a wavelength of 405-1064nm is optionally irradiated onto the portion to be a circuit (11) of a synthetic resin substrate (1), and an ionic catalyst of palladium is caused to be adsorbed and then reduced to metallic palladium by a reducing agent. Subsequently, an electroless plating layer (3) is formed on the portion to be a circuit (11). Since the portion to be a circuit (11) is surface modified and roughened, the ionic catalyst firmly attaches, and the electroless plating layer (3) strongly adheres. The ionic catalyst does not adsorb onto the non-circuit portions (12) not irradiated by the laser beam (2), and thus the electroless plating layer (3) is not formed thereon.
Owner:SANKYO KASEI CO LTD

Hydrophobic silica aerogel heat-insulation composite material

The invention relates to a hydrophobic silica aerogel heat-insulation composite material. The composite material consists of silica aerogel and an inorganic fiber product, wherein the silica aerogel is doped with a flame retardant and an infrared blocking agent; the inorganic fiber product comprises one or more of glass fibers, quartz glass fibers, aluminium silicate fibers, ceramic fibers, alumina fibers, zirconia fibers, rock wool fibers and basalt fibers, and the porosity of the inorganic fiber product is higher than 50%. The composite material has the overall waterproof performance, the extremely low heat conductivity coefficient and the excellent high-temperature heat-insulation performance, can pass an incombustibility test under the condition that the material is ensured to be hydrophobic as a whole, and reaches level A1 according to the incombustibility test; the preparation process is simple, the production cycle is short, the cost is lower, the equipment requirement is low, and reaction conditions are controllable.
Owner:纳诺科技有限公司

Composite flexible surface enhanced Raman substrate based on silver nanoparticles and preparation method of substrate

The invention provides a composite flexible surface enhanced Raman substrate based on silver nanoparticles and a preparation method of the substrate. According to the method, first, a chemical reduction method is utilized to prepare a silver colloid containing a large quantity of silver nanoparticles (AgNPs); second, the silver colloid is mixed with polydimethylsiloxane (PDMS) diluted with methylbenzene to form a suspension, the suspension is dropwise added onto the surface of a hard baseboard, and a PDMS thin film containing a large quantity of silver nanoparticles is formed through heat curing and is peeled off; and last, an impregnation method is used to transfer a layer of silver nanoparticles on the prepared thin film, and the composite flexible surface enhanced Raman substrate basedon silver nanoparticles is prepared. An experiment indicates that by use of the surface enhanced Raman scattering substrate prepared through the method, high-sensitivity SERS detection can be realized, and Raman signals are uniform; and meanwhile, the substrate has good mechanical stability and flexibility, and SERS signals are not attenuated but even substantially enhanced under large-range tensile strain. The method is convenient and fast to use and low in cost, and large-area repetitive preparation can be realized.
Owner:SHANDONG NORMAL UNIV

Gas diffusion layer for fuel cell and its production

The invention relates to a fuel battery, in particular to a gas diffusing layer and the preparation for the fuel battery; the gas diffusing layer consists of basic bottom layer and a micro-hole layer, which is made by fabricating the micro-hole constructed by a water repellent agent / a composite powder body of electric conduction copper material at one side or two sides of a porous electric conduction basic bottom processed by a hydrophobic water; the water repellent agent / the composite powder body of electric conduction copper material is made by a microwave dielectric heating technology; because of the favorable water repellent performance and the grain diameter structure therefore, the gas diffusing layer to be fabricated has a strong and even water repellent performance and a suitable hole structure, so that the favorable mass transfer capability of the gas diffusing layer can be assured. The fuel battery assembled by the invention can show a better battery output performance, and is particularly suitable to be used in the fuel battery where the air is used as oxidizer with a strong practicality value.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Preparing method of waterproof electric-breakdown-resisting coating

ActiveCN107058979AExtend power-on timeImprove electrical breakdown resistancePrinted circuit manufactureSpecial surfacesCross-linkHigh energy
The invention discloses a preparing method of a waterproof electric-breakdown-resisting coating, and belongs to the technical field of plasma chemical vapor phase deposition. According to the method, a base material is placed in a reaction cavity, continuous vacuum pumping is carried out, and inert gases or nitrogen is led in; monomer steam is led to start plasma discharge, the waterproof electric-breakdown-resisting coating is prepared on the surface of the base material; the monomer steam is a mixture of at least one kind of single-functional unsaturated fluorocarbon resin and at least one kind of polyfunctionality unsaturated hydrocarbon derivatives, wherein the mass percent of the polyfunctionality unsaturated hydrocarbon derivatives in the monomer steam ranges from 30% to 50%. Extra cross-linked points are led in by introducing of other monomer components with polyfunctional group cross-linked structures to form a cross-linked structure; plasma is broken by active base groups with high energy in the monomer components to form active points, the introduced extra active points are subject to cross-linking polymerization under the plasma environment to form a compact net-shaped structure, hydrophobicity of a thin film is ensured, and the property of corrosion resistance and underwater powering resistance of an electronic product is improved.
Owner:JIANGSU FAVORED NANOTECHNOLOGY CO LTD

Preparation method of organic/inorganic hybridization nano super-hydrophobic fiber film

The invention relates to a preparation method of an organic / inorganic hybridization nano super-hydrophobic fiber film. The method comprises the steps of dissolving a polymer carrier in water, and heating and stirring to obtain a polymer carrier solution; mixing tetraethoxysilane, water, zinc acetate and phosphoric acid, and stirring at the room temperature to obtain a mixing solution; uniformly mixing the mixed solution and the polymer carrier solution, then performing electrostatic spinning, drying in vacuum, forging, cooling and dipping in HCl solution, and drying to obtain a SiO2 porous nano fiber film; compositing and laminating the SiO2 porous nano fiber film, pouring a liquid, and drying in vacuum to obtain the organic / inorganic hybridization nano super-hydrophobic fiber film. The super-hydrophobic nano inorganic fibers have superhigh hydrophobic performance which can be maintained under the conditions of humidity, low temperature and the like without the FAS processing, is smooth and soft in hand feeling, gets rid of the limitation of the economic cost of an organic fluorocarbon and APEO and the environment-friendly limitation, and has the advantages of low price, no pollution, wide applicable range and the like.
Owner:DONGHUA UNIV +1

Method for preparing multifunctional nanometer protection coating through circulation small-power continuous discharge

The invention discloses a method for preparing multifunctional nanometer protection coating through circulation small-power continuous discharge, and belongs to the technical field of multifunctional nanometer protection coating through circulation small-power continuous discharge. The method comprises the steps that a reaction cavity is vacuumized, inert gas is introduced into the reaction cavity, a base material moves in the reaction cavity, monomer steam is introduced into the reaction cavity, chemical vapor deposition is carried out and comprises a pretreatment stage and a film coating stage, the plasma discharge mode is large-power continuous discharge in the pretreatment stage, the plasma discharge mode is small-power continuous discharge in the film coating stage, the pretreatment stage and the film coating stage are cycle and repeated at least one time, more active sites more introduced to the surface of the base material in a circulation mode in the film coating technological process, effective film coating is added, the film structure is more compact, the nanometer coating with of the multi-layer composite structure is obtained, multiple layers of protection are provided for the product, the more compact coating structure is shown microscopically, and excellent hydrophobicity, adhesive force, acid and base resistance, mechanical performance and moisture and heat resistance are shown macroscopically.
Owner:JIANGSU FAVORED NANOTECHNOLOGY CO LTD

Thermal insulation silicon dioxide aerogel/hydroxylation glass fiber felt composite and preparation method thereof

The invention discloses a thermal insulation silicon dioxide aerogel / hydroxylation glass fiber felt composite and a preparation method thereof. The thermal insulation silicon dioxide aerogel / hydroxylation glass fiber felt composite is characterized in that silicon dioxide aerogel accounts for 50-80 weight parts of a matrix, and hydroxylation glass fiber felt accounts for 70-120 weight parts of a reinforcing body. The thermal insulation silicon dioxide aerogel / hydroxylation glass fiber felt composite is prepared by preparing a silica sol system of an MQ structure (M represents (CH3)3SiO1 / 2, Q represents SiO4 / 2) through raw materials including absolute ethyl alcohol, deionized water, hexamethyldisiloxane and the like under the acid catalysis environment, then adding gel catalysts, submerging preprocessed glass fiber in the silica sol system to form a wet gel and fiber felt composite, conducting soaking through normal hexane after ageing is conducted for 12-24 h so that water in the system can be removed, and conducting drying to obtain the silicon dioxide aerogel / hydroxylation glass fiber felt composite at temperature of 50-120 DEG C and pressure of 0.01-5 Pa for 1-5 h.
Owner:四川中蓝基业新材料科技有限公司

Synthesis method and applications of magnetic nano high-molecular polymer

The invention discloses a synthesis method of a magnetic nano high-molecular polymer. The polymer is polystyrene coated ferriferrous oxide nanoparticle, which is prepared through a chemical co-precipitation method. In the synthesis of ferriferrous oxide nanoparticle, trisodium citrate is taken as the modifier to improve the dispersibility of ferriferrous oxide in a water solution; at the same time, polystyrene can better cover the surface of ferriferrous oxide nanoparticles, the specific surface of the nanoparticle is large, at the same time, the hydrophobicity of polystyrene is large, and the polystyrene that is covered on the surface of ferriferrous oxide nanoparticle has good affinity on oil. The synthesized nanoparticle is super-paramagnetic, has a large specific surface and strong hydrophobicity, and thus can be used to process oil-containing wastewater. The wastewater treatment has the characteristics of short separation time, simple operation, high oil elimination rate, and environment-friendliness.
Owner:云南健牛环境监测有限公司

Method for manufacturing fabric with moisture absorption and sweat discharge performance

The invention relates to a method for making fabric having moisture absorbing and sweating property, which includes: pre-activating on the surface of the hydrophobic fabric; then taking grafting reactions with polyalcohol, natural polysaccharide and copolymer formed by unsaturated carboxylic acid with double bond and a covalent bond is formed.
Owner:IND TECH RES INST

Core-double shell hydrophobic magnetic microsphere and preparation method thereof

The invention belongs to the technical field of nanometer magnetic materials, and discloses a core-double shell hydrophobic magnetic microsphere. The magnetic microsphere uses a magnetic material as an inner core, uses a corrosion-resistant layer as an inner shell layer and uses a hydrophobic carbon layer as an outer shell layer, wherein the magnetic material is ferroferric oxide, gamma-Fe2O3 or cobaltosic oxide; the corrosion-resistant layer is silicon dioxide, titanium dioxide or aluminum oxide. The invention further discloses a preparation method of the magnetic microsphere. The hydrophobicmagnetic nanometer microsphere has the advantages of strong acid resistance, hydrophobicity and magnetic recyclability, can effectively drive migration and collection of oil beads or organic pollutant molecules in a strong acid solution and in a complex water system environment, and can achieve oil-water separation; the magnetic microsphere is high in reuse rate, and the hydrophobic property thereof is maintained after high-pressure extrusion.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA

Preparation of side-chained sulfonated polyimide of which main chain contains quinoxaline perssad and application of side-chained sulfonated polyimide

The invention discloses side-chained sulfonated polyimide of which a main chain contains quinoxaline perssad, a preparing method of side-chained sulfonated polyimide, and a method for applying side-chained sulfonated polyimide to prepare a protocol exchange membrane. Side-chained sulfonated polyimide is structurally characterized in that the main chain contains the quinoxaline perssad, and ether bonds or thioether bonds on side-chained sulfonated polyimide serve as connection perssad of a side chain, the flexibility of the side chain and the hydrophobicity of the main chain are guaranteed, andmeanwhile, side-chained sulfonated polyimide has high molecular weight, excellent heat stability and high hydrolytic stability. The preparing technology is simple, the reaction condition is easy to operate and control, and side-chained sulfonated polyimide is applicable to industrialized production. The protocol exchange membrane which is prepared through side-chained sulfonated polyimide of which the main chain contains the quinoxaline perssad has high protonic electric conductivity and excellent mechanical performance, and has a good application prospect.
Owner:南京黑泰催化剂有限公司

Super-wear-resistant and super-amphiphobic coating as well as preparation method and application thereof

The invention relates to a super-wear-resistant and super-amphiphobic coating as well as a preparation method and application thereof, belonging to the technical field of coating preparation. The preparation process comprises the following steps: mixing resin powder, hydrophobic powder and an auxiliary agent, then putting the obtained mixture into a twin-screw mixer for melting and extruding, and then tabletting and crushing; grinding the crushed the sheets, and sieving to obtain a powder coating; dispersing aqueous silica sol into an aqueous solution, adding ammonia water for carrying out alkalization treatment, then adding the solution into an ethanol solution, mixing uniformly and then adding a hydrophobic modifier, stirring and standing to obtain a nano-super-amphiphobic coating; electrostatically spraying the powder coating to obtain a primer coating, and then spraying the nano-super-amphiphobic coating onto the surface of the primer coating to obtain the super-wear-resistant and super-amphiphobic coating. According to the preparation method provided by the invention, a large roughness surface structure is prepared by means of an electrostatic powder spraying process; due to the introduction of the functional finish coating, the super-amphiphobic coating with ultra-high wear resistance and anti-icing performance can be obtained; the super-wear-resistant and super-amphiphobic coating can be applied to preparation of kitchen utensils and equipment, inner walls of refrigeration equipment or outer walls of outdoor facilities in cold areas.
Owner:SOUTHEAST UNIV

Anti-ultraviolet unidirectional-moisture-permeable fiber composite and preparing method thereof

The invention belongs to the field of functional micro-nano fiber composites, and particularly relates to an anti-ultravoilet unidirectional-moisture-permeable fiber composite and a preparing method thereof. The fiber composite comprises a polypropylene layer and a hydrophilic polymer and ultraviolet absorber mixture layer which are integrally combined. Polydopamine deposits on and adheres to thesurfaces and the interiors of the polypropylene layer and the hydrophilic polymer and ultraviolet absorber mixture layer. The preparing method includes the steps of dissolving an ultraviolet absorberand a hydrophilic polymer in an organic solvent to form a spinning solution, conducting static spinning and then hot-pressing treatment with a melt static spinning polypropylene fiber material as thereceiving substrate, and placing the material in a Tris-HCl buffer solution with dissolved dopamine for impregnation modification to prepare the anti-ultravoilet unidirectional-moisture-permeable fiber composite. The material has good unidirectional moisture-permeable and anti-ultraviolet functions and is stable in integration structure, simple in composition and structure, simple in preparing process and wide in application prospect.
Owner:SHANGHAI UNIV OF ENG SCI

Acrylate emulsion for building interior wall paint and preparation method thereof, and paint

The invention provides an acrylate emulsion for building interior wall paint and a preparation method thereof, and paint, and belongs to the technical field of building paint. The emulsion is preparedfrom the following raw materials, by weight: 6-20 parts of butyl acrylate, 15.5-26 parts of styrene, 6-20 parts of 2-ethylhexyl acrylate, 0.11-0.55 part of a self-crosslinking monomer, 0.15-1.3 partsof acrylamide, 0.2-3 parts of a carboxyl monomer, 0.015-0.12 part of a silane coupling agent, 0.21-0.81 part of a reactive anionic emulsifier, 0.21-0.81 part of a reactive non-ionic emulsifier, 0.1-2parts of polyethyleneimine, 0.1-0.2 part of adipic dihydrazide, 0.12-0.45 part of persulfate, 0.2-2 parts of ammonia water, and 30-60 parts of water. The emulsion is mainly used for building interiorwall paint; the emulsion can have low MFFT without adding a film forming auxiliary; and the paint prepared by the emulsion can have excellent scrubbing resistance and freeze-thaw stability, and is low in VOC content and excellent in environmental protection.
Owner:成都巴德富科技有限公司

Flat heat pipe with gradient wetting structure

The invention discloses a flat heat pipe with a gradient wetting structure. The flat heat pipe comprises a bottom plate, a top plate and supporting plates located between the bottom plate and the topplate. The bottom plate, the top plate and the supporting plates on both sides are connected to form a sealed cavity. A micron-grade radial strip is machined on the inner surface of the bottom plate,and the wetting gradient which is evenly changed from the circle center to the circumference is presented. Super-hydrophilic super-hydrophobic radial structures arranged at intervals are machined on the inner surface of the top plate and used for transporting condensate to the surrounding pipe wall direction. Liquid absorbing cores are arranged on the inner sides of the supporting plates. Since micro-nano machining is carried out on the evaporation surface, the functions of transporting liquid directionally without pump and concentrating the reflux condensate are achieved. Patterning super-hydrophilic super-hydrophobic machining is carried out on the condensation surface, condensate is driven to migrate to the surrounding pipe wall direction, the condensate backflow speed is increased, liquid absorption core structures on the upper and lower surfaces are omitted, heat resistance is reduced, the evaporation and condensation speed is improved, heat exchange performance of an evaporationarea and a condensation area is improved, and therefore the heat exchange performance of a whole flat heat pipe is improved.
Owner:XI AN JIAOTONG UNIV

Preparation method of superhydrophobic surface material

The invention discloses a preparation method of a superhydrophobic surface material. The method comprises steps of: dispersing a superhydrophobic powder in a solvent, adding an initiator and mixing evenly; spraying the evenly mixed suspension onto a surface of a substrate; and polymerizing a polymer monomer to the sprayed substrate through chemical vapor deposition to obtain a transparent superhydrophobic surface. Compared with the prior art, the superhydrophobic surface material prepared by the preparation method provided by the invention is suitable for a variety of substrates, and can be widely applied to preparation of water fog resistant and self-cleaning materials. The process provided by the invention is simple, practical and suitable for large-scale industrial production.
Owner:HEFEI GENIUS NEW MATERIALS

Method for preparing multifunctional nanometer protective coating through high-duty-cycle pulse discharge

ActiveCN107217243ADense network cross-linked structureSolve uneven thicknessChemical vapor deposition coatingSolventPulse discharge
The invention discloses a method for preparing a multifunctional nanometer protective coating through high-duty-cycle pulse discharge, and belongs to the technical field of plasmas. In the method, the interior of a reaction chamber is vacuumized until a vacuum degree is 10-200 millitorrs, inert gas He or Ar is charged, a movement mechanism is started to enable a base material to move in the reaction chamber, monomer steam is charged into the reaction chamber, plasma discharge is carried out, chemical vapor deposition is carried out, a deposition process comprises a pretreatment phase and a film-coating phase, a plasma discharge manner in the pretreatment phase is high-power continuous discharge, and a plasma discharge manner in the film-coating phase is the high-duty-cycle pulse discharge. During a preparation process for the coating, the movement characteristic of the base material and the high-duty-cycle pulse discharge energy of plasmas form combined linkage. The base material moves during the plasma discharge, so that the deposition efficiency of the coating is increased, and the thickness uniformity and compactness of the coating are improved. The prepared coating has the characteristics of being waterproof and moistureproof, mouldproof, resistant to acidic and basic solvents, resistant to acidic and basic salt mist, and the like.
Owner:JIANGSU FAVORED NANOTECHNOLOGY CO LTD

Preparation method and application of super-hydrophobic coating and product with super-hydrophobic coating

The invention relates to the technical field of preparation of super-hydrophobic coatings, in particular to a preparation method and application of a super-hydrophobic coating and a product with the super-hydrophobic coating. The preparation method of the super-hydrophobic coating comprises the step that the surface of a substrate after being subjected to nano laser corrosion is sprayed with silicon oxide by adopting air spray. The preparation method is easy to operate, low in cost and high in preparation efficiency, and the prepared super-hydrophobic coating has good hydrophobic performance,corrosion resistance and anti-icing performance.
Owner:SOUTHWEST JIAOTONG UNIV

Modified starch coated inhibiting and anti-collapse agent for drilling fluid and preparation method thereof

Relating to the field of oil field additives, the invention discloses a modified starch coated inhibiting and anti-collapse agent for drilling fluid and a preparation method thereof. The modified starch coated inhibiting and anti-collapse agent for drilling fluid is a natural modification product prepared from partially degraded starch, a hydrophobic monomer, alkenyl amide, potassium alkenyl carboxylate and alkenyl silane as the main raw materials by means of enzyme-catalyzed reaction and free radical polymerization reaction. The modified starch provided by the invention is an inhibitor with hydrophobic stereo groups on a molecular side chain, can be adsorbed on the surface of an easily hydrated clay mineral to change the hydrophobicity, and has strong inhibiting and anti-collapse performance, the preparation method is simple, and is easy for industrial popularization.
Owner:CHINA PETROLEUM & CHEM CORP +1

Inflaming-retarding tear-resisting fireproof cable material

The invention discloses an inflaming-retarding tear-resisting fireproof cable material.The inflaming-retarding tear-resisting fireproof cable material is prepared from, by weight, 30-50 parts of neoprene, 20-35 parts of polyvinyl chloride, 5-15 parts of ethylene propylene diene monomer, 0.5-1.5 parts of peroxysuccinic acid, 0.5-1 part of tert-butyl hydrogen phthalate, 0.2-0.8 part of tetramethylthiuram disulfide, 0.4-1.2 parts of 1,3(1,4)-bis(tert-butyldioxyisopropyl)benzene, 40-60 parts of fast extruding furnace black, 20-30 parts of ceramic fiber, 5-15 parts of hard pottery clay, 5-15 parts of modified activated carbon, 1-3 parts of antiager, 0.4-0.8 part of polyvinyl butyral, 1-2 parts of stearic acid, 1-2 parts of polyethylene wax and 0.5-1.5 parts of epoxidized soybean oil.The inflaming-retarding tear-resisting fireproof cable material has good inflaming-retarding property and excellent waterproof performance and tear-resisting performance.
Owner:ANHUI RUIKAN SCI CABLE

Method for preparing high strength waterproof nano micropore insulation board

The invention relates to a method for preparing a high strength waterproof nano microporous insulation board, and a phosphate coating cured at room temperature coats the surface of a hydrophilic or hydrophobic microporous insulation molding material by dipping or spraying, and is cured at the room temperature to obtain the high performance nano microporous insulation board. Compared with the prior art, by coating the surface of the microporous insulation molding material by dipping or spraying with the phosphate coating cured at room temperature, the strength and the stability of hydrophobic properties of the insulation board can be improved significantly, the preparation process is simplified, and the production cost is reduced.
Owner:SHANGHAI CIYE NEW ENERGY MATERIAL SCI & TECH

Method for rapidly preparing hydrophobic silica aerogel through subcritical drying of methanol

ActiveCN104876226ASave the replacement linkSave time and costSilicaPolymer scienceHydrophobic silica
The invention relates to a method for rapidly preparing hydrophobic silica aerogel through subcritical drying of methanol. The method comprises the steps of (1) sufficiently hydrolyzing silicate ester and ethoxysilane proportioning solution in a methanol environment under the action of an acid catalyst; (2) adding an alkali catalyst, and then, enabling near-neutral or alkali gel to form wet gel; or after obtaining the near-neutral or alkali gel, compounding the near-neutral or alkali gel and inorganic fibers to prepare a gel-fiber composite, and aging; and after aging, placing the gel-fiber composite into a methanol extracting device, and drying; and (3) heating and increasing the pressure until being up to the subcritical state of methanol, separating and extracting methanol in pores of dried hydrophobic silica aerogel, cooling, releasing the pressure and standing to obtain the hydrophobic silica aerogel. A solvent replacement link is omitted in the method, so that the time is saved, and the energy cost is reduced; the drying temperature is 180-200 DEG C, the pressure is 5-6MPa, and the energy consumption is greatly reduced; and methanol provides parts of hydrophobic groups for a body, and a proper amount of methylethoxysilane is introduced to a silicon source, so that the hydrophobicity of the hydrophobic silica aerogel is ensured.
Owner:IBIH ADVANCED MATERIALS CO LTD

Water-in-water colorful coating and preparation method thereof

The invention provides a water-in-water colorful coating and a preparation method thereof. The coating comprises a colloidal solution, a disperse phase and a continuous phase, the colloidal solution is formed by dissolving sodium pyrophosphate and magnesium lithium silicate in water, the disperse phase is mainly composed of a hydrophobic regulator, a wetting dispersant, cellulose, a pigment, the colloidal solution, an emulsion and water, and the continuous phase is mainly composed of the hydrophobic regulator, a film forming agent, an antifoaming agent, propylene glycol, a thickener, the emulsion and water, wherein the hydrophobic regulator is a divinyl benzene and 1-vinyl imidazole copolymer and / or a divinyl benzene and vinyl ionic liquid copolymer. The coating needs no organic solvents, and the waterproof property of the coating is increased through the hydrophobic regulator, so the colorful coating has the advantages of good waterproof property, bleeding resistance, stability, automatic cleaning and pollution prevention.
Owner:江苏恒兆新材料科技有限公司

Nano fiber coating layer super-hydrophobic self-cleaning air filter core and manufacturing method thereof

The invention discloses a nano fiber coating layer super-hydrophobic self-cleaning air filter core and a manufacturing method thereof. The nano fiber coating layer super-hydrophobic self-cleaning air filter core comprises a micron filter core material substrate and a nano hydrophobic fiber non-woven thin film; the nano hydrophobic fiber non-woven thin film is formed by electrospinning a hydrophobic material; the micron filter core material substrate is formed through small molecule atmosphere fumigation of a chemically grafted hydrophobic material. The filter core with a double-layer material structure provides a super-hydrophobic and low-adhesion surface of a micro-nano structure, also ensures hydrophobicity of a lower-layer substrate paper fiber material, thereby achieving the super-hydrophobic surface properties with practical strength and durability on the paper fiber material substrate, ensuring good air permeability, and achieving high-efficiency self-cleaning and reuse of the filter core of air purification equipment.
Owner:康俊平

Shielding motor for pump capable of transporting liquid containing particles

The invention discloses a shielding motor for a pump capable of transporting liquid containing particles. The shielding motor for the pump comprises a motor cavity, a pump cavity and negative pressuresuction devices, wherein the output end of the motor cavity is connected with the pump cavity, the negative pressure suction devices comprise the first negative pressure suction device and the secondnegative pressure suction device, and the first negative pressure suction device and the second negative pressure suction device are arranged at the top end and the bottom end of the pump cavity respectively; and the shielding motor further comprises a cooling device, and one end of the cooling device is connected with the motor cavity. According to the shielding motor for the pump capable of transporting the liquid containing the particles, extraction and discharge operations of liquid can be effectively realized, meanwhile, the motor can be applied to the liquid medium containing the particles which cannot be conveyed by a common shielding pump, and the practicability is better; and the structure is reasonable in design, the influence of the particles on the whole assembly can be reduced in the transportation process, the sealing performance of the motor cavity and the pump cavity is ensured, the cooling effect of the motor cavity can be achieved, and higher practicability is achieved.
Owner:常州市江南三翔电机有限公司

Silica aerogel and normal pressure drying preparation method and application thereof

ActiveCN108928823AOmit the replacement stepOmit the hydrophobic modification stepSilicon compoundsEmulsionWater insoluble
The invention discloses a silica aerogel and a normal pressure drying preparation method and application thereof. The method comprises the following steps: 1) mixing a silicon source, water and an acid catalyst for a reaction, so as to obtain a sol; 2) dissolving an organic amine in a water-insoluble low-surface-tension solvent to obtain an alkaline organic solution; 3) mixing the sol with the alkaline organic solution under stirring, adding a phase transfer catalyst simultaneously during the mixing under stirring, so as to obtain an unstable emulsion; 4) allowing the unstable emulsion to stand for gelation and aging, so as to obtain a wet gel; and 5) performing atmospheric drying on the wet gel, so as to obtain a silica aerogel having a light weight, a large specific surface area and a low thermal conductivity. The method has the advantages of short process flow, high production efficiency and low cost, and the obtained silica aerogel has excellent comprehensive performance and can bewidely used as a thermal-insulating material, a sound absorbing material, an adsorbing material or an explosion-proof material.
Owner:CENT SOUTH UNIV

Erosion-resisting hydrophobic material and preparation method thereof

The invention discloses an erosion-resisting hydrophobic material and a preparation method of the material. According to the preparation method of the erosion-resisting hydrophobic material, a magnetic filtering negative electrode vacuum arc discharging method is adopted to enable a plurality of film layers to be deposited on the surface of a workpiece; and a laser device laser etching method is adopted to etch texture on the surface of the workpiece after film layer deposition, wherein the film layer deposition step is carried out before the texture etching step. The prepared multi-layer film of specific structure has the excellent wear-resisting impact-resisting performance, and the service life of engineering structural parts under the contact abrasion and impact environment can be obviously prolonged; due to instruction of a film layer system, the hardness of a base body is improved, the shaping and deformation resistance capacity of the base body is improved, and erosion-resisting and abrasion-resisting performance of the base body is further improved; and due to instruction of a microstructure, the capacity of oil / grease storage and wear particle containing can be effectively improved, and on the premise that the hydrophobic property is ensured, the service life of the film layer is further improved.
Owner:BEIJING RES INST OF AUTOMATION FOR MACHINERY IND
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