486results about How to "Clean surface" patented technology

An insulated attic access cover which is easily installed from below the attic access opening and includes a flat panel with a central insulation portion, flanges which carry a seal and attachment points to secure the cover to the ceiling.

The invention provides nanometer spray plating for a silver mirror, namely obtain a high glaze metal mirror face by adopting coating technique, which is similar to the brand new decorative effect of plating. The whole technique consists of a paint bottom layer, a metal reflecting layer (spray plating layer) and a paint surface layer. The coating has excellent adhesive attraction, shock resistance, corrosion resistance, weather resistance and marresistance, has rich colors and is bright like a mirror. The nanometer spray plating can be used to various materials such as metal, resin, ABS, PC, PP+PS carbon element resin, plastic, glass, pottery and porcelain, acrylic, wood, plastic wood and calcium plastic.

The invention discloses a laser and MIG (metal-inert gas) arc composited welding method for high-nitrogen steel. The laser and MIG arc composited welding method is characterized by comprising the following steps of: design of a welding joint; design of a welding mode; setting of a composite way and heat source spaces; selection of protective gas for the composite welding; setting of welding technology parameters according to the composite way; and synchronous implementation of the composite welding. Compared with the prior art, the laser and MIG arc composited welding method has the advantages of being capable of implementing the welding of the high-nitrogen steel with middle thickness and achieving weld joints which have clean and smooth surfaces and are good in forming and free from sunken parts; and meanwhile, the welding method has the characteristics of low loss and uniform distribution of nitrogen elements at connectors, high welding penetration, high welding speed, small deformation of workpieces, low assembly requirements and the like.

The invention relates to technology for preparing an anodized aluminum oxide film, in particular to a method for preparing a pore diameter controllable through hole anodized aluminum oxide film. The method comprises the following steps of: performing anode electrolysis treatment on an anodized aluminum oxide film with an aluminum substrate in mixed solution of perchloric acid and acetone to obtain a pore diameter controllable anodized aluminum oxide film with two open ends in short time (2-300 seconds), wherein the pore diameters at the top end and the bottom end fo the anodized aluminum oxide film are accurately controllable in ranges of between 10 and 100nm and between 5 and 25nm; and putting the aluminum oxide film with the aluminum substrate subjected to stage depressurization-method oxidation into acetone solution of perchloric acid, and applying voltage 5-15V higher than film forming voltage for anode electrolysis treatment to obtain the pore diameter controllable through hole anodized aluminum oxide film. In the method, the pore diameters at the top end and the bottom end of the anodized aluminum oxide film can be respectively controlled, holing and removal of the aluminum substrate are completed by one step, and a plurality of problems of complicated process, time consumption, difficult control of pore diameters and the like in the conventional process for preparing the through hole anodized aluminum oxide film.

The invention discloses an alloy ingot for an automotive hub and a production method thereof. The alloy ingot comprises the following components: 6.8-7.2% of Si, 0.28-033% of Mg, 0.10-0.15% of Ti, 0.015-0.030% of Sr, less than or equal to 0.10% of Fe, less than or equal to 0.05% of Mn, less than 0.01% of zinc, less than 0.01% of Cu, less than 0.003% of Ca, less than 0.002% of P, less than 0.02% of other single impurity content, less than 0.1% of total impurity content and the balance of aluminum. The production method of the alloy ingot for the automotive hub comprises the following steps of: adding 3303 industrial metallic silicon and electrolytic aluminum liquid for batching, heating at an appropriate temperature and melting, spreading a covering agent so as to reduce oxidation slagging, stirring so that the industrial metallic silicon rapidly melts, keeping uniform temperature, slagging off, keeping melt clean, spraying powder and refining by adopting high-purity N2 and a refined powder spraying agent, controlling the temperature of a smelting furnace to 740-750 DEG C, adding Al-Sr alloy to aluminium water, carrying out secondary degassing and slagging-off by adopting a powder spraying refinement method, filtering to remove slag, and casting the alloy ingot in line with requirements. The alloy ingot obtained by the method has the advantages of stable and uniform components, compact structure and clean surface; and the production method is the best production method for producing the A356.2 alloy ingot for the low-iron high-end automotive hub.

The invention provides a degradable organic amines and organic aromatic ammonium salts latent epoxy resin curing agent. The curing agent can be polymerized with epoxy resin to generate a degradable cross-linked polymer, and the degradable cross-linked polymer can be degraded in a mixed system of acid and solvent under the condition of heating and stirring. The invention also provides a prepreg which is composed of the curing agent, the epoxy resin, an auxiliary material and a reinforcing material. The invention also provides a reinforced composite material which is prepared by the curing agent, the epoxy resin, the auxiliary material and the reinforcing material. The reinforced composite material can be prepared by virtue of a prepreg forming method. The reinforced composite material can be degraded in the mixed system of the acid and the solvent under the condition of heating and stirring and recycled after neutralization. The reinforced composite material has excellent mechanical property and is suitable for different composite material application field. The degraded recycling method of the reinforced composite material is simple, economical, temperate in condition and easy to control.

The invention provides a degradable hydrazide latent epoxy resin curing agent. The curing agent can be polymerized with epoxy resin to generate a degradable crosslinked polymer; and the degradable crosslinked polymer can be degraded in a mixed system of an acid and a solvent under the conditions of heating and stirring. The invention also provides a prepreg, consisting of the curing agent, the epoxy resin, an auxiliary material and a reinforcing material. The invention also provides a reinforcing composite material which is prepared from the curing agent, the epoxy resin, the auxiliary material and the reinforcing material. The reinforcing composite material can be prepared by a prepreg forming method. The reinforcing composite material can be degraded in the mixed system of the acid and the solvent under the conditions of heating and stirring, and can be recycled and reused after being neutralized. The reinforcing composite material has excellent mechanical property and is suitable for the field of application of different composite materials; and the degrading and recycling method of the reinforcing composite material is simple, economic, mild in condition and easy to control.

The invention discloses a method for processing composite fiber material spiral stirrup. The method comprises the following steps of: gumming, premolding, semi-solidifying and drying, molding spiral stirrup, sizing and drying, and cutting and packaging. In the multiturn continuous closed-type composite material spiral stirrup of the invention, the continuous spiral composite material stirrup replaces the single-ring composite material stirrup, so that the spiral stirrup can save materials and man-hours in the same member, resists corrosion, and can also improve the bearing capacity of a girder or a column under the condition of constant section and equal spacing; the tensile strength of the composite material stirrup is three times that of steel bar; the weight is only one-fourth that of the steel bar; and the composite material stirrup has the advantages of no magnetism, water resistance, freeze resistance, strong chemical corrosive resistance and the like; and due to the adoption of a process for molding the composite fiber material spiral stirrup, the disadvantage that a conventional composite material is difficult to bend into the stirrups with different shapes after solidification and sizing is overcome, and the shape of the composite material steel bar can be changed so as to manufacture the spiral stirrup according to the requirements of people.

The invention discloses a coating material and producing method of galvanized steel sheet, which comprises the following elements: Al 50%-60%, Zn 38%-47%, SiO 5%-3%, RE 0. 05%-0. 3%, wherein the producing method comprises the following steps: adding 50%-60%Al in founding furnace; heating-up to 795-805deg. c; adding in 0. 5-3 percent Si; mixing equably; heating-up to 845-855deg. c and joining 0. 05-0. 3% RE; stirring equably; heating-up to 860-880deg. c and adding in 38-47 percent Zn; mixing evenly and placing for 35min. The invention improves corrosion resistance and fire resistant property of coated rolled steel.

The invention relates to a temperature-sensitive-type intelligent nano particles used in a drilling fluid and a preparation method thereof. In the invention, a silane coupling agent is used for performing ultrasound surface modification to nano SiO2 and a vinyl functional group is introduced. With the surface-modified nano SiO2, a temperature-sensitive-type monomer and a hydrophilic monomer are subjected to a polymerization reaction in a water medium with a co-solvent with addition of an initiator, wherein granularity distribution of the temperature-sensitive-type intelligent nano particles is D10 <= 100 nm, D 50 <= 165 nm and D90 <= 260 nm. When the temperature is higher than a sensitive value, the nano particles achieve double functions of both physical blocking and chemical inhibition, so that a continuous compact hydrophobic blocking layer is formed inside shale, thereby achieving effects of preventing and delaying pressure transmission and filtration invasion, and further enhancing stability of a shale well wall.

The invention relates to a preparation method of a shale micro/nano particle plugging agent for water-base drilling fluids. The method comprises the following step: adding an initiator to initiate polymerization reaction on acrylate or methacrylate monomer and vinyl monomer in a water medium in the presence of a cosolvent. The particle size distribution of the micro/nano particle plugging agent is D10<=100nm, D50<=165nm and D90<=260nm. The water-base shale micro/nano particle plugging agent provided by the invention is micro/nano deformable polymer latex particles, can form a continuous compact plugging layer inside the shale under the actions of adsorption, bridging and deformable filling, performs the function of preventing and relieving pressure transfer and filtrate invasion, and enhances the stability of the shale well wall.

The present invention relates to novel gold nanocrystals and nanocrystal shape distributions that have surfaces that are substantially free from organic impurities or films. Specifically, the surfaces are “clean” relative to the surfaces of gold nanoparticles made using chemical reduction processes that require organic reductants and/or surfactants to grow gold nanoparticles from gold ions in solution. The invention includes novel electrochemical manufacturing apparatuses and techniques for making the gold-based nanocrystals. The invention further includes pharmaceutical compositions thereof and the use of the gold nanocrystals or suspensions or colloids thereof for the treatment or prevention of diseases or conditions for which gold therapy is already known and more generally for conditions resulting from pathological cellular activation, such as inflammatory (including chronic inflammatory) conditions, autoimmune conditions, hypersensitivity reactions and/or cancerous diseases or conditions In one embodiment, the condition is mediated by MIF (macrophage migration inhibiting factor).

The invention relates to a method for manufacturing an anodic aluminum oxide template and a method for manufacturing a field emission cathode array material by using the aluminum oxide template. The anodic aluminum oxide template with a regular appearance and a clean surface is manufactured by adopting a series of surface protection measures; and a field emission vertical nanowire or nanotube array cathode material is manufactured by pouring organic substances, metal organic solution or sol into a nano hole of the aluminum oxide template by a water method, a heat method and the like through processes such as gelation, high temperature carbonization, aluminum oxide template removal and the like. The field emission cathode material manufactured by the method has regular appearance and low starting voltage during field emission performance test; furthermore, the method process is simpler; and manufacturing of large-area field emission materials can be realized easily.

The invention belongs to the field of metal materials, and relates to a method for preparing a silicon carbide particle reinforced aluminum matrix composite material. The method comprises the following steps of: carrying out ball milling on Al-Si alloy powder for 4-16 hours, mixing the Al-Si alloy powder with modified graphite powder or copper-coated graphite powder through adopting a physical mechanical method for 4-20 hours, putting the mixture into a mould to be subjected to cold press molding, and putting a cold press molding block body into a vacuum furnace or a sintering furnace under the inert atmosphere protection, wherein the heating temperature is 670-1200 DEG C, and the insulating time is 15-120 minutes; and then carrying out hot extrusion molding on the block, and cooling the furnace so as to obtain the in-situ formation silicon carbide particle reinforced aluminum matrix composite material. By utilizing the method, the silicon carbide particle reinforced aluminum matrix composite material with excellent comprehensive mechanical properties such as high strength and high abrasion resistance can be prepared, and the preparation method is simple, low in cost and suitable for large-scale industrial production.

The invention discloses a preparation method for a metal sulfide and a composite metal sulfide nano crystal material, which is suitable for the preparation of the nano crystal materials of cadmium sulfide, cuprous sulfide, zinc sulfide, lead sulfide, bismuth sulfide, and zinc-cadmium sulfide. The method is characterized in that water or organic solvent used in the existing hydrothermal or solvent thermal synthetic methods is replaced with melt composite alkali metal hydroxide which is synthesized through a chemical reaction under the normal atmosphere and a temperature between 100 and 300 DEG C. The raw materials used are soluble inorganic metal salts and sulfide or sulfide compounds, thereby having less controllable parameters and simple art, and being able to amplify manufacturing during the process of synthesis. Metal sulfide crystal produced has the advantages of good crystal, clean surface and even size, and is suitable for the research on the intrinsic properties and the maximum play of the functions of the nano crystal materials. The metal sulfide and the composite metal nano crystal materials have properties of a semiconductor, LED and optoelectronic, thereby being suitable for biomarker and preparation of a nano electronic apparatus, an LED apparatus and an optoelectronic apparatus.

The present invention generally relates to containers for powder products. The present invention described herein relates to a container capable of generating powder in loose form. The invention further relates to cosmetic containers for powder products that present pressed and loose powder products for usage as per the convenience of user. Further the invention also relates to a scraper for such a container.

The invention relates to a preparation method of a TiB nano-reinforced titanium-based composite material, and belongs to the field of metal-based composite materials. According to the method, the composite material is prepared through ball milling, spark plasma sintering and hot rolling. The original powder is prepared through ball milling, the advantages that the sintering efficiency of the discharge plasma is high, and the external pressure and the sintering atmosphere can be controlled are utilized, so that under the low sintering temperature and the high pressure, and on the premise that the TiB2 particles and the surrounding titanium or titanium alloy matrix do not generate in-situ reaction, a sintering block body with high compactness is prepared; and finally, the TiB2 particles in the sintered block body are subjected to in-situ reaction with the surrounding titanium or titanium alloy matrix through hot rolling to form whiskers, and meanwhile, the crystal grains of the matrix are deformed, the porosity in the structure is reduced, and the strength and the plasticity of the composite material are improved. The TiB nano crystal whisker generated in situ in the method is cleanin surface and is uniformly distributed in a matrix and free of agglomeration, has good interface bonding and lattice relationship with the titanium matrix, and can effectively refine matrix crystal grains.

A steam mop having a main body including a water pump and a boiler. Generation of steam is provided when the water pump is actuated by angular movement of the mop handle which changes the angle between the handle and mop head for operating a two way piston pump to pump water to the boiler. Steam is fed to a steam pad that may have a replaceable fabric pad fit snugly on the frame to distribute cleaning steam to the surface to be cleaned.

A weighing conveyor having an increased weighing accuracy. This conveyor includes a conveyor apparatus 3 for transporting an article X to be weighed, a load detector 5 for detecting the weight of the article X to be weighed, and a housing 7 for accommodating the load detector 5, in which a fixed end 5b of the load detector is connected with the housing 7 and a free end 5c thereof is connected with a support member 120 for supporting the conveyor apparatus 3, and the support member 120 protrudes outwardly of the housing 7 from a bottom surface thereof.

The invention provides a preparation method of an Sb2S3 nanowire. 10 mmol of Sb2Cl3 is dissolved into 2 ml of glycol; after the Sb2Cl3 is totally dissolved, 10 ml of deionized water is added while stirring to form white emulsion A; 15 mmol of Na2S.9H2O is dissolved into 10 ml of deionized water to form solution B; the solution B is added into the solution A at the rate of 2 drips/ second to form a precursor; mineralizer is added into the precursor to prepare 30 ml of solution C, and the solution C is put in an agitated reactor; the agitated reactor is put into an incubator; when temperature rises to 240 DEG C, temperature is kept for 8-16 hours; and after reaction ends, the product is washed by deionized water to be neutral and is dried for 4h in vacuum in the incubator of 80 DEG C. The invention has simple preparation method, short reaction period and low cost.

A device to assuage distressed infants via an adjustable vertical motion combined with an adjustable orientation. The device has a frame, an infant resting member coupled to the frame that is capable of retaining an infant in an adjustable position and a mechanism that is capable of moving the infant resting member in a vertical motion to soothe the infant.