45results about How to "Hydrophobic has" patented technology

The invention discloses a transparent super-hydrophobicity wood coating which comprises the following components in parts by weight: 20-50 parts of water dispersive polyurethane resin or water dispersive alkyd resin, 4.5-25 parts of nano silica sol, 3-16 parts of nano cellulose gel, 0.1-1 part of octadecyl trichlorosilane or tetrahydroperfluorodecyltrichlorosilane or stearic acid and 0-45 parts of nano talc powder or nano calcium carbonate. A preparation method of the transparent super-hydrophobicity wood coating comprises the following steps: adding matrix resin and filler into a stirring kettle, and stirring uniformly to obtain slurry; grinding the slurry with a sand mill; adding a low-surface energy substance and supported nano silica sol; performing ultrasonic sufficient mixing for 30 minutes to obtain the transparent super-hydrophobicity coating. The transparent super-hydrophobicity wood coating disclosed by the invention has the advantages of low cost, controllable process, adjustable size and good applicability and is suitable for a preparation method of large-area preparation of transparent super-hydrophobicity surface; the prepared super-hydrophobicity film has good self-cleaning property, antifouling property, hydrophobic property, oleophobic property and the like.

The invention discloses a preparation method of hydrophobic coating on the surface of silicon rubber. The method comprises the following steps: tetraethyl orthosilicate is taken as a precursor, anhydrous alcohol is taken as a solvent so as to prepare silicon dioxide sol under the condition of alkaline catalysis, and the obtained silicon dioxide sol is added with a silane coupling agent for modification process; after the surface is cleaned, a silicone rubber insulator is dipped in the modified silicon dioxide sol to carry out film coating with a pulling method so as to form a one-time coating and obtain a micro-nanometer rough structure which is similar to the leaf of taro; and after dried, the nanometer rough structure is again dripped in self-made fluorosilane sol for a secondary film coating with the pulling method, and then placed in an oven for thermal processing under 100 DEG C to 120 DEG C. The one-time coated micro-nanometer rough structure can obtain the transparent hydrophobic coating with acid and alkali resistance, after being modified by the secondary coating with low-surface fluorosilane sol.

The invention relates to an anti-virus mask, and belongs to the technical field of filter protection equipment. The anti-virus mask comprises a mask body and fixing straps. The mask body comprises a first spun-bonded fiber layer, a melt-blown fiber layer, a nanofiber layer and a second spun-bonded fiber layer which are sequentially stacked. The diameter of each fiber in the first spun-bonded fiber layer and the second spun-bonded fiber layer ranges from 1 micrometer to 10 micrometers. The diameter of each fiber in the melt-blown fiber layer ranges from 100 nm to 500 nm. The diameter of each fiber in the nanofiber layer ranges from 50 nm to 150 nm. The aperture of the nanofiber layer ranges from 50 nm to 250 nm. The mask body of the mask is made of a filter material formed by stacking four layers of fibers, the spun-bonded fibers are adopted in the upper layer and the lower layer and achieve the functions of achieving primary filtering and protecting and supporting the middle filter layers in the filter material, and the nanofiber layer and the melt-blown fiber layer serve as the two middle layers and achieve the function of finely filtering out viruses and germs in the filter material; and particles with the diameter being 100 nm or above can be filtered out, and then the mask can achieve the function of filtering out the viruses.

The invention discloses high flowing and strong hydrophobic starch and a preparation method thereof. The method comprises the following steps: the dry modification processing is performed to the starch by adopting the high-speed stirring equipment commonly used in the industry; a layer of hydrophobic film is wrapped on the surface of a starch granule, thereby obtaining the hydrophobic starch; simultaneously, a layer of flowing improver is wrapped on the surface of the hydrophobic starch granule, to ensure that the hydrophobic starch has good fluidity, thereby obtaining high flowing and strong hydrophobic starch granules. The technological process is simple, feasible, stable and reliable, the cost is low, the method has versatility, and the production can be operated under the prior production process and equipment condition, and the industrial large scale production can be realized. The modified starch prepared by adopting the method flows like water, floats on the water surface and cannot sink, has good fluidity as well as good hydrophobicity.

The invention relates to a preparation method of a manganese-doped fluoride luminescent material controllable in morphology and particle size, and belongs to the field of preparation of LED luminescent materials. The method is mainly characterized in that the manganese-doped fluoride luminescent material Ax(M1-zNw)Fy:Mn4+ uniform in morphology and controllable in particle size can be prepared through two-step synthesis. The two-step synthesis is characterized in that firstly, a liquid phase synthesis mode is adopted to prepare a manganese-doped fluoride luminescent material raw crystal with the particle size smaller than 10 micrometers; secondly, the raw crystal is put into the reaction solution in the first step, the saturability and the proportion are controlled to control the growth amount of a secondary crystal, and the sphere-like product controllable in particle size and uniform in morphology is obtained. By carrying out surface treatment on the manganese-doped fluoride luminescent material with organosilicone, the stability performance of the manganese-doped fluoride luminescent material in a high-temperature and high-humidity environment is improved.

The invention relates to konjac glucomannan / polyester composite material and the preparation method thereof, which belongs to the scientific field of the macromolecule material and also belongs to the natural macromolecule field. The konjac glucomannan / polyester composite material is characterized in that the konjac glucomannan / polyester composite material is formed by preparing the raw materials of konjac glucomannan and polyester, the raw materials occupy the weight percentage as follows: konjac glucomannan occupies 1 to 65 percent, and polyester occupies 35 to 99 percent. The polyester is polylactic acid, polycaprolactone or polyhydroxyalkanoate. In the invention, biodegradable polyester is utilized to be melted and blended together with the konjac glucomannan, to prepare hydrophobic, thermo-plastic and biodegradable composite material; the invention has the advantages of low cost, environmental protection and simple process.

The invention discloses a hydrophobic polymer cement waterproof coating and a preparation method thereof. The hydrophobic polymer cement waterproof coating is prepared from, by weight, 433 parts of polymer emulsion, 5 parts of plasticizer, 5 parts of defoaming agents, 1.6 parts of thickener PRM-300, 0.8 part of multifunctional additive, 4 parts of methyl sodium silicate, 266 parts of 42.5 Portland cement, 145 parts of 8# quartz sand and 145 parts of 10# quartz sand. After curing and film forming, the coating film has the waterproof and hydrophobic actual effects at the same time, and has the good capillary crystalline performance, the reverse capillary effect is achieved, the excellent hydrophobic layer is formed, and meanwhile the minimum inflation function and compactness increasing function are achieved; the methyl sodium silicate is added as a hydrophobic agent, and due to the fact that the methyl belongs to hydrophobic groups, the hydrophobicity of waterproof coating is increased after film formation, the compactness of the coating is increased, the waterproof, dampproof, anti-aging and anti-fouling performance and weather resistance of the waterproof coating film are improved, and the hydroscopicity of the coating film is lowered.

The invention provides a secondary drying method for preparing hydrophobic aluminum-silicon aerogel heat-insulation materials. The secondary drying method includes steps of S1, preparing aluminum solby means of hydrolysis by the aid of acid catalysis processes, and impregnating the aluminum sol in fiber reinforced material gel to obtain fiber reinforced aluminum gel; S2, sealing and aging the gel, carrying out ethanol supercritical drying and then carrying out heat treatment; S3, immersing fiber/aluminum aerogel composite materials in alkaline solution, carrying out surface alkaline treatment, carrying out centrifuging and then carrying out drying; S4, preparing silicon sol by means of hydrolysis by the aid of acid catalysis processes, uniformly impregnating the silicon sol in fiber/aluminum aerogel composite material gel to obtain composite materials; S5, immersing the composite materials in alcohol solvents, sealing and aging the composite materials in the alcohol solvents, carryingout solute replacement on the composite materials in the alcohol solvents, then immersing the composite materials in surface modifier solution, carrying out surface treatment on the composite materials in the surface modifier solution and then carrying out secondary ethanol supercritical drying to obtain the aluminum-silicon aerogel heat-insulation materials with the hydrophobic performance. Silicon gel is available on pores of the composite materials obtained at the step S4. The secondary drying method has the advantages that the mechanical properties of the hydrophobic aluminum-silicon aerogel heat-insulation materials can be obviously improved by the aid of the secondary drying method, the hydrophobic aluminum-silicon aerogel heat-insulation materials have the hydrophobic properties, and the excellent high-temperature heat-insulation performance can be kept.

The invention belongs to the technical field of membrane electrode preparation, and particularly relates to a hydrophilic/hydrophobic membrane electrode of ionic liquids. An anode catalyst layer is prepared from the hydrophilic proton type ionic liquid and a catalyst, and a cathode catalyst layer is prepared from a hydrophobic and oxytropic proton type ionic liquid and a catalyst. A self-humidifying membrane electrode is prepared by taking the ionic liquids with special physical and chemical properties as raw materials for preparing the catalyst layers, so that the problem that the charge transfer resistance is increased due to the fact that inorganic oxide is taken as an additive for preparing the self-humidifying membrane electrode is effectively solved; the selected ionic liquids have negligible volatility, so the ion transmission capacity and stability of the membrane electrode are greatly improved; and meanwhile, the hydrophobic ionic liquid can be adsorbed into the pore channelsof the catalyst under a high-vacuum condition through a continuous vacuumizing treatment process, so that the ionic liquid can be uniformly dispersed on each surface of the catalyst.

The invention discloses a self-cleaning photo-thermal photovoltaic integrated heat-insulation ventilation light-transmitting glass roof. The self-cleaning photo-thermal photovoltaic integrated heat-insulation ventilation light-transmitting glass roof comprises a photovoltaic layer, a photo-thermal layer, a heat-insulation layer and louver vents. The photovoltaic layer absorbs and weakens solar radiation heat entering a room by using a solar thin film battery, the photo-thermal layer further absorbs and weakens the solar radiation heat by using a plurality of groups of heat pipes, the heat-insulation layer uses a thin film made of heat-insulation and light-transmission materials to block the radiation heat entering the room outside an atrium, and the louver vents can adjust the ventilationdirection and area according to the outdoor wind speed and wind direction, so that air flow is accelerated and the heat is brought out of the room. According to the elf-cleaning photo-thermal photovoltaic integrated heat-insulation ventilation light-transmitting glass roof, the photo-thermal photovoltaic integrated glass roof is adopted, so that the solar radiation heat entering the room is reduced, and the energy consumption of an air conditioning system in a building is reduced; and a natural light source is used for lighting, the energy consumption of building lighting is reduced, and the self-cleaning photo-thermal photovoltaic integrated heat-insulation ventilation light-transmitting glass roof conforms to the concept of energy conservation and environmental protection of modern greenbuildings.

The invention discloses a method for preparing ultrafine high-purity SiO2 from volcanic ash. The method comprises the following steps of: A, taking 100 weight parts of the volcanic ash of which the SiO2 content by weight is more than or equal to 50 percent, crushing the volcanic ash to ensure that the particle size is less than or equal to 1 mm; B, adding and dispersing the volcanic ash into acid solution of which the temperature is between 40 and 95 DEG C, stirring for 10 to 180 minutes, and filtering and washing; and C, transferring the volcanic ash processed in the step B into 300 weight parts of water of which the temperature is between 35 and 100 DEG C, adding NaOH or KOH of which the equivalent weight of the SiO2 is equal to that of the SiO2 in the volcanic ash with stirring to form a uniform sol system, then adding 0.5 to 5 weight parts of hydrophobic substances into the uniform sol system, introducing 500 to 1,500 weight parts of organic solvent which is immiscible with water, stirring at a high speed to form a micro-emulsion system, dropping an acidic substance to generate a deposit, filtering to obtain the deposit, and washing and drying the deposit to obtain the ultrafine high-purity SiO2. The method has the advantages of low raw material cost, simple preparation process and easy industrialization; and the prepared ultrafine high-purity SiO2 has uniform particle size distribution and high purity, and can be used as a functional filling material directly.

The invention provides a solvent-free UV curing hardening liquid, a preparation method thereof and a hardening film. The solvent-free UV curing hardening liquid is prepared by mixing a polyurethane prepolymer or an acrylate prepolymer, a diluting monomer, a photoinitiator and special silicon modified resin, the preparation method of the special silicon modified resin comprises the following steps: S01, stirring and mixing an acrylic acid soft monomer, an acrylic acid hard monomer, an acrylic acid monomer containing a carboxyl group and a photoinitiator, and carrying out UV illumination reaction; and S02, dropwise adding a monomer containing a siloxane group, and carrying out a UV illumination reaction to obtain the special silicon modified resin with the molecular weight of 5000-15000. The special silicon modified resin is introduced into the hardening liquid, so that compared with other similar hardening liquids in the market, the hardness and scratch resistance of a hardened film can be remarkably enhanced; in addition, along with the introduction of silicon, the hardened film also has good hydrophobicity.

The invention discloses a hydrophobic easy-to-clean powder coating which is prepared from the following components in percentage by mass: 48-58% of organic silicon modified saturated end hydroxyl polyester resin, 14-17% of an isocyanate curing agent, 1-1.5% of a smooth degasifier, 1-1.5% of a leveling agent and 22-36% of a pigment filler. The organic silicon modified saturated end hydroxyl polyester resin is adopted as basic resin of the self-cleaned powder coating, and meanwhile a coating formula is optimized, so that the powder coating disclosed by the invention has properties of hydrophobicity, easy cleaning, scrubbing resistance, detergent resistance and the like after being sprayed and cured, and can be widely applied to coating of fields such as outdoor furniture, building materialsand the like.

The invention belongs to the field of production of textiles for safety protection, and relates to a super-hydrophobic flame-retardant cut-resistant stab-resistant fabric and a production method thereof. The super-hydrophobic flame-retardant cut-resistant stab-resistant fabric comprises an antibacterial warm-keeping fabric layer and a hydrophobic flame-retardant fabric layer arranged on the outer side of the antibacterial warm-keeping fabric layer; the antibacterial warm-keeping fabric layer is formed by mixing and weaving ultra-high molecular weight polyethylene curled short fibers, cotton fibers and antibacterial polyester fibers according to the mass fraction ratio of 6: 3: 1, and the hydrophobic flame-retardant fabric layer is formed by mixing and weaving ultra-high molecular weight polyethylene curled short fibers, cotton fibers and glass fibers according to the mass fraction ratio of 5: 3: 1. the ultra-high molecular weight polyethylene curled short fibers and the glass fibers are soaked in a hydrophobic solution and dried before being woven, and the problem that the use range of an existing cut-resistant and stab-resistant fabric is affected due to poor water resistance and air permeability is solved.

The invention discloses a garbage can with a super-hydrophobic garbage bag. The garbage can comprises a can body; a fastening connection part is arranged on the upper end opening of the can body; thegarbage bag is arranged in the can body; the surface of the garbage bag is coated with a super-hydrophobic layer; a reinforcing edge strip is further arranged on the upper end opening of the garbage bag; the reinforcing edge strip is used for being matched with the fastening connection part; and a saddle weight block is arranged on the bottom of the garbage bag.

The invention relates to the field of skin care products, and specifically relates to a preparation method of antipersprant deodorant. The method is characterized in that an octylene hydrophobic groupis introduced into the particle surfaces of corn starch, so that hydroxyl on the starch molecules can be screened out to the maximum; the hydrophilia can be quickly reduced; the intermolecular actionforce of hydrogen bond, van der waals, etc. among the starch particles can be greatly reduced; and as a result, high flowability is realized at the macro level; the starch molecules with octylene arehydrophobic and can freely flow in a dry state, and the flowing form is extremely similar with the liquid form; the starch molecules in water float on the water and are hard to form suspension and are kept in a dry state; when the antipersprant deodorant is coated to oxter, the oxter can be locally kept dry, and sticky feeling is avoided in case of sweating, and the skin is soft, dry and clean; in addition, natural amino acid substrates are added and have the characteristics of naturally moisturizing, being resistant to oxidation, resistant to bacteria, resistant to static resisting, safe, and free from side effect, so that the functions of the antipersprant deodorant applied to a sensitive area in the oxter can be improved.

Provided is a method for efficiently producing anti-shrinkage animal hair fibers having sufficiently high water-resistant launderability in a sliver form while maintaining inherent water repellency as one of features of animal hair fibers without deteriorating the texture and other features. The method for producing anti-shrinkage animal hair fibers is characterized in that a sliver, which is a continuous body of animal hair fibers, is immersed in a diamine aqueous solution containing an alkaline agent at 30-45 DEG C, and immersed in a silicon solvent with a dibasic acid chloride dissolved therein in a state in which the diamine is attached to the sliver, thereby coating the animal hair fibers with a polyamide.