146results about How to "Avoid desorption" patented technology

Methods for controlled isotropic etching of layers of silicon oxide and germanium oxide with atomic scale fidelity are provided. The methods make use of NO activation of an oxide surface. Once activated, a fluorine-containing gas or vapor etches the activated surface. Etching is self-limiting as once the activated surface is removed, etching stops since the fluorine species does not spontaneously react with the un-activated oxide surface. These methods may be used in interconnect pre-clean applications, gate dielectric processing, manufacturing of memory devices, or any other applications where accurate removal of one or multiple atomic layers of material is desired.

The invention discloses a silicone modified acrylic ester emulsion and a preparation method thereof. The emulsion is prepared from the following raw materials in parts by weight: 6.5-9 parts of acrylic ester mixed monomers, 1-3.5 parts of an organosilicone monomer, 0.4-0.6 part of an emulsifier, 0.2-0.3 part of an initiating agent, 0.01-0.03 part of a pH conditioning agent, 28-32 parts of deionized water, wherein the acrylic ester mixed monomers are methyl methacrylate and butyl acrylate with the mass ratio of (5.5-6.5):(3.5-4.5); the organosilicone monomer is gamma- 3-[Tris(trimethylsiloxy)silyl]propyl methacrylate. According to the emulsion, the reactive emulsifier is adopted for polymerization reaction, the prepared emulsion is stable, and the latex film of the emulsion has lower surface energy and better water resistance, and can be used as the main film forming matter of a metal anti-corrosion coating.

The invention relates to a full ceramic type covering fuel particle, a preparation method of the full ceramic type covering fuel particle and a fuel element prepared from the full ceramic type covering fuel particle. The full ceramic type covering fuel particle comprises a nuclear fuel core, a loose silicon carbide layer, a silicon carbide transition layer and a compact silicon carbide layer, wherein the loose silicon carbide layer, the silicon carbide transition layer and the compact silicon carbide layer sequentially cover the outside of the nuclear core. The full ceramic type fuel element is prepared by dispersing and distributing covering fuel particles in a silicon carbide substrate. When the fuel element provided by the invention is used, the problems of oxidation and corrosion of the existing covering fuel particles and the fuel element during air and water injection under the condition of reactor accidents can be solved. The fuel element can be used for the reactor types such as high-temperature air-cooled reactors, gas-cooled fast reactors, molten salt reactors, space reactors and pressurized water reactors.

The invention provides a preparation method of an electromagnetic shielding textile. The preparation method comprises the following steps: textile pre-treatment: (1) putting the textile into a sodium hydroxide water solution and carrying out coarsening and oil removing treatment at 80-100 DEG C; (2) carrying out hydrogen plasma metal silver plating: padding the textile which is subjected to the coarsening and oil removing treatment in the step (1) into a silver nitrate complexing mixing solution and drying or airing; then utilizing a hydrogen plasma to replace silver nitrate padded on the textile with a silver monomer metal layer; (3) carrying out chemical copper plating: putting the textile obtained in the step (1) into a chemical copper plating solution to carry out the chemical copper plating; and (4) carrying out chemical nickel plating or electrical nickel plating: putting the textile treated in the step (3) into a nickel plating solution to carry out nickel plating. The method disclosed by the invention has the advantages of good process stability, small environmental pollution and cheap process; and the electromagnetic shielding rate of the prepared electromagnetic shielding textile is high and can reach more than 75 DB, the bonding force between a shielding layer and the metal layer is strong and the shielding layer and the metal layer are not easy to fall off.

The invention provides a high-accuracy liquid-phase dechlorinating agent. The dechlorinating agent is prepared from the following components in percentage by weight: 5-20 percent of CuO, 5-10 percent of CaO, 4-8 percent of KOH and the balance of modified activated carbon, wherein the modified activated carbon is activated carbon which is subjected to acidification and oxidation. According to the dechlorinating agent, the modified activated carbon is adopted as a carrier, the open-framework structure of the activated carbon can be optimized, the pore volume and specific surface area can be increased, the content of the oxygen-containing functional group on the surface of the activated carbon can be increased, the carrier polarity can be improved, the combination degree between the carrier and the active ingredient can be enhanced, loss of the active ingredient can be reduced, hydrogen chloride which is a polar molecule can be easily and stably adsorbed on the surface of the modified activated carbon having relatively large polarity, and the dechlorinating accuracy can be improved. Furthermore, the reaction activity of the dechlorinating agent and hydrogen chloride can be increased due to the synergistic effect of three active substances in the dechlorinating agent, and maximization of chlorine capacity of the dechlorinating agent can be effectively realized, so that the chlorine capacity of the liquid dechlorinating agent can be more than or equal to 16 percent, and the dechlorinating accuracy is lower than 0.5ppm.

A low dielectric constant film containing a silicon, a carbon, an oxygen, and a hydrogen is formed on a substrate as a semiconductor wafer, and a resist film is formed on the low dielectric constant film. Then, the low dielectric constant film is etched with the use of the resist film as a mask to form an exposed surface of the low dielectric constant film. Next, there is deposited a protective film that covers the exposed surface of the low dielectric constant film formed by etching. Thereafter, by ashing with the use of a plasma containing an oxygen, the protective film and the resist film are removed. During the ashing, desorption of the carbon from an insulation film is restrained by the protective film.

The invention provides a preparation method of a sulfhydryl activated carbon mercury removal agent.The preparation method comprises the steps that activated carbon is modified by initiatively adopting sulfhydryl modification liquid prepared from mercaptoacetic acid, acetic anhydride and concentrated sulfuric acid, so that hydroxyl on the surface of the activated carbon reacts with mercaptoacetic acid to immobilize sulfhydryl to the activated carbon, and then sulfhydryl activated carbon is prepared.When mercury removal treatment is performed on mercury-containing gas or liquid by adopting the sulfhydryl activated carbon prepared through the preparation method, the sulfhydryl activated carbon shows the relatively high mercury removal precision and mercury penetration capacity, and therefore the sulfhydryl activated carbon prepared through the preparation method can be used as the mercury removal agent.

Methods for controlled isotropic etching of layers of silicon oxide and germanium oxide with atomic scale fidelity are provided. The methods make use of NO activation of an oxide surface. Once activated, a fluorine-containing gas or vapor etches the activated surface. Etching is self-limiting as once the activated surface is removed, etching stops since the fluorine species does not spontaneously react with the un-activated oxide surface. These methods may be used in interconnect pre-clean applications, gate dielectric processing, manufacturing of memory devices, or any other applications where accurate removal of one or multiple atomic layers of material is desired.

The invention discloses a preparation method of a nano Ru / C supported catalyst. The method comprises steps as follows: treated activated carbon is added to a ruthenium slat aqueous solution, stirring and dipping are performed for 0.5-4 h, then an alkaline compound aqueous solution is used for adjusting the pH of mixed slurry of activated carbon and ruthenium salt to 7-12, the mixed slurry is stirred continuously for 1-6 h, left to stand for 2-4 h and filtered, a filter cake is washed with water to be neutral and free of chloride ions and dried at the temperature of 80-120 DEG C for 4-12 h, and a treated Ru / C precursor is obtained; the treated Ru / C precursor is subjected to sectioned calcination in the inert atmosphere; a product after calcination is reduced, and then the nano Ru / C supported catalyst with high dispersion is obtained. The particle size of ruthenium particles of the catalyst is 1-4 nm. The method is low in production cost, has mild preparation conditions and causes few three industrial wastes, and the catalyst has advantages of long service life and the like.

The invention discloses a composite water-soluble temporary plugging agent for oilfield steering fracturing construction, wherein the composite water-soluble temporary plugging agent comprises the following raw materials by weight: 32.1-53.6 parts of a coating material, 17.9-29.8 parts of temporary plugging particles and 16.7-50.0 parts of temporary plugging fibers, wherein the coating material isselected from sodium polyacrylate, sodium carboxymethyl cellulose, bone glue and gelatin, the temporary plugging particles are selected from sea salt particles, potassium chloride particles, calciumcarbonate particles and calcium chloride particles, and the temporary plugging fibers are selected from polyvinyl alcohol fibers, polyester fibers, asbestos fibers and cotton fibers. According to theinvention, the composite water-soluble temporary plugging agent is suitable for plugging cracks with millimeter-scale crack widths, can resist a temperature of 120-140 DEG C, has a plugging pressure gradient peak value of more than 30 MPa / m, and can be completely dissolved into a clear liquid with a viscosity close to the viscosity of water within 2 h at 140 DEG C; and the composite water-solubletemporary plugging agent has characteristics of large plugging pressure gradient, short plugging removal time, no damage to stratum and the like.

The invention relates to an integrated technology for capturing and mineralizing carbon dioxide, which is characterized in that renewable ammonium salt (NH4HSO4) is used for obtaining a calcium and magnesium ions-containing leachate from ores or solid wastes, the leached residual slag is a small-size particle with high content of silicon oxide, the leachate is subjected to separation, impurities removal and precious metal purification, partial solution is directly used for capturing renewable ammonia gas to obtain a calcium and magnesium containing ammonia-rich liquid, CO2 is captured by the ammonia-rich liquid under normal temperature to generate ammonium carbonate salt, then the ammonium carbonate salt is subjected to rapid reaction with another part of the leachate for depositing to obtain magnesium(calcium) salt product with high purity, and a reaction-finished solution is further heated to regenerate ammonium salt (NH4HSO4) and ammonia gas for pretreating ores and capturing CO2. According to the invention, the steps of the technology enable complete closed circulation, thereby the chemical agent amount and three wastes are reduced, two high energy consumption steps of CO2 capturing desorption and compression in a traditional method can be avoided, the efficiency for each step is more than 90%, the waste heat in a power plant can be simultaneously used for assisting the regeneration of ammonium salt, and total energy consumption of the technology can be reduced.

A distributed feedback semiconductor laser comprises a first cladding layer, a first optical guide layer, an active layer, a second optical guide layer, an InP semiconductor layer, an InGaAsP semiconductor layer, and a second cladding layer. The first optical guide layer is provided on the first cladding layer. The active layer is provided on the first optical guide layer. The second optical guide layer is provided on the active layer and made of AlGaInAs semiconductor. The InP semiconductor layer is provided on the second optical guide layer. The InGaAsP semiconductor layer is provided on the InP semiconductor layer. The second cladding layer is provided on the InGaAsP semiconductor layer and made of InP semiconductor. A diffraction grating for the distributed feedback semiconductor laser includes the InGaAsP semiconductor layer and the second cladding layer.

A fuel injection apparatus for an internal combustion engine including a fuel injector having a leading end portion that has an internal space in which fuel is stored and an injection nozzle for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The adsorbent has a characteristic such that an amount of alcohol adsorption is small when a fuel pressure is low and large when the fuel pressure is high. Adsorption of alcohol onto, and desorption of alcohol from, the adsorbent can be controlled by changing the fuel pressure in the internal space.

The invention relates to organic silicone modified acrylate emulsion and a preparation method thereof. The organic silicone modified acrylate emulsion is synthesized through a hard monomer, a soft monomer, a cross-linking monomer, an organic silicone monomer and a reactive emulsification monomer under the action of an initiator at one time; the preparation method comprises the following steps: dissolving the initiator into deionized water; uniformly mixing the hard monomer, the soft monomer, the cross-linking monomer and the organic silicone monomer in a premixing tank; adding an emulsifier and deionized water into a four-mouth flask to be heated to 70-90 DEG C, slowly dropwise adding the uniformly-mixed monomer mixed phase and 90% of an initiator solution for 1-3 h at the temperature of 70-90 DEG C and the rotating speed of 200-400 r / min, carrying out heat preservation for 1-3 h at the temperature of 70-90 DEG C after dropping, meanwhile, dropwise adding 10% of the residual initiator solution, and adding ammonia water for adjusting the PH to 6-8 after cooling to 50 DEG C or below. The migration of the emulsifier in a latex film is avoided through application of the reactive emulsifier and the defects of hot sticking and cold shortness of the pure acrylic resin are overcome through organic silicone modification.

The invention discloses a production method of high-adsorptivity melt-blow non-woven fabrics. The production method comprises the production steps that (1), formaldehyde removal particles and activated carbon particles are stirred and mixed evenly according to the mass percent of (25-75%):(75%-25%) to obtain annexing agent materials; (2), macromolecule granules and an assisting agent of non-woven fabrics with the weight percent being 25:(0.4-1.6) are mixed and stirred evenly, melt spinning is carried out through a melt-blow method, the mixture is evenly mixed with the annexing agent materials in the step (1) before net formation, and the high-adsorptivity melt-blow non-woven fabrics are obtained by the utilization of air currents or mechanical net formation. The formaldehyde removal particles comprise potassium permanganate, platinum powder, manganese acetate, sodium hydroxide, activated aluminum oxide and titanium dioxide all of which the mass percent is 1:(0.01-0.05):(0.5-1.0):(1-2):(0.3-0.8):(1-3). The formaldehyde removal particles in the non-woven fabrics can capture target molecules and make contact with active constituent in the non-woven fabrics to generate the chemical adsorption reaction, and the formaldehyde removal rate is extremely high.

A visual formaldehyde scavenger and a preparation method thereof belong to the technical field of formaldehyde clearance. The visual formaldehyde scavenger is prepared from the raw materials including, by weight part, 8-120 parts of water, 1-120 parts of formaldehyde treatment agent, 0.00005-1 part of indicator, 0-1 parts of pH regulator and 0-2 parts of additives, wherein the formaldehyde treatment agent is used for reacting with formaldehyde and reducing the pH of the visual formaldehyde scavenger; the indicator is used for displaying color change when the pH of the visual formaldehyde scavenger is reduced to be lower than a target pH. The formaldehyde clearing effects of the visual formaldehyde scavenger can be visualized by the color change displayed along with the decreasing system pH. The preparation method of the visual formaldehyde scavenger comprises by weight part mixing the raw materials of the visual formaldehyde scavenger. The preparation method of the visual formaldehydescavenger is simple and easy to operate and applicable to large-scale industrial production. When the raw materials comprise a raw gel liquid, the preparation method of the visual formaldehyde scavenger also comprises the step of gelatinizing an obtained gel liquid mixed solution. The prepared visual formaldehyde scavenger is in a gel state and is convenient to use and store.

The invention has a support, a recording layer provided on the support, and a protective layer containing a hydrophilic polymer and silica-coated organic resin fine particles provided as the uppermost layer. The organic resin fine particles are preferably composed of at least one resin selected from the group consisting of polyacrylic acid resins, polyurethane resins, polystyrene resins, polyester resins, epoxy resins, phenolic resins, and melamine resins, and the protective layer preferably contains a mica compound.

The prodn. steps are: 1) to do low-temp. oxygen plasma preprocessing to LSAT(111) substrate surface, 2) to deposit magnesium ultrathin layer in ultrahigh vacuum and low temp., 3) to do annealing process to magnesium ultrathin layer by increasing substrate temp. to make magnesium atoms moving and deabsorbing on LSAT (111) substrate, 4) to obtain ultrathin magnesium adsorption layer, thus to realize that ZnO film grows according to crystal lattice small mismatch and epitaxial orientation to produce atom grade smooth high-quality ZnOfilm with single O polarity and domain. The smooth ZnO film produced by the invention has high crystal quality and photoelectric performance.

The invention relates to a fluorine-silicon modified acrylate emulsion and a preparation method thereof. A hard monomer, a soft monomer, a cross-linking monomer, an organosilicon monomer, a fluorine-containing monomer and a responsive emulsification monomer are selected to realize one-time synthesis of the emulsion under the action of an initiator. The method comprises the following steps: dissolving the initiator in water, uniformly mixing the hard monomer, the soft monomer, the cross-linking monomer, the organosilicon monomer and the fluorine-containing monomer, heating an emulsifier and water in a four-neck flask to 70-90DEG C, slowly adding the above obtained uniformly-mixed monomer mixture phase and 90% of the above obtained initiator solution in a dropwise manner in 1-3h at 70-90DEG C under a rotating speed of 200-400r / min, maintaining the temperature unchanged in a range of 70-90DEG C for 1-3h after the dropwise addition ends, adding the remaining 10% of the initiator solution in a dropwise manner in the temperature maintaining process, cooling to 50DEG C or below, and adding ammonia water to adjust the pH value to 6.5-8. The fluorine-silicon modified acrylate emulsion integrates respective advantages of silicon and fluorine polymerse, and is suitable for dye migration resistance, water resistance, oil resistance, fouling resistance, fog resistance and self-cleaning function.

A manufacturing method of a liquid crystal display device including a liquid crystal layer sandwiched between a pair of opposed substrates and orientation films includes forming a first orientation film having straight-chain alkyl chains at the liquid crystal layer side of one substrate, and forming a second orientation film at the liquid crystal layer side of the other substrate by forming an inorganic orientation layer and surface-treating the inorganic orientation layer using a silane coupling agent, and forming the second orientation film includes surface-treating the inorganic orientation layer using a first silane coupling agent having straight-chain alkyl chains and surface-treating the layer using a second silane coupling agent having straight-chain alkyl chains and having only one hydrolytic group.

The invention discloses blue stone underlay handling method, using the P-MBE device to treat blue stone underlay by three steps. The method comprises the following steps: plasma treating the underlay at the low temperature, then depositing the lithium or magnesium at low temperature and ultra high vacuum, finally carrying out annealing treatment to get blue stone surface modified by lithium oxide or magnesium oxide. The method improves the crystallization quality of zinc oxide epitaxial film. The zinc oxide film made on the modification surface of blue stone possesses the good optical property and suits for high-performance opto-electronic device.

The invention relates to application of polyaninophenol as a precious metal adsorbent. Precious metal ions with a concentration of several mg / L to thousands of mg / L can be reduced to 0.1 ppm or below,the adsorption rate is 99.9% or above, and most of the adsorbed precious metal is at an elemental state rather than an ionic state, so that the recycling process path is shortened. The maximum adsorption capacity of the precious metal by polyaninophenol can reach 2000 mg / g which is twice or above the weight of the polyaninophenol. The polyaninophenol can be applied to recovery of gold in waste circuit boards, the adsorption rate of leached gold exceeds 99.96%, the concentration of residual gold after adsorption is performed is less than 0.1 mg / L, and almost all the gold in the solution is adsorbed. When the polyaninophenol is applied to recovery of gold in an electroplating waste liquid, 12 rounds of adsorption are performed, the concentration of the residual gold in each waste liquid obtained after each round of adsorption is performed is less than 0.1 mg / L, the adsorption rate is more than 99.82%, and almost all the gold in the solution is recycled completely; and compared with existing precious metal adsorbents, the adsorbent has obvious advantages in terms of minimum residual precious metal ion concentration, maximum adsorption capacity, a pH application range, a recovery process path and the like.

An ink-jet recording material having a support and at least one ink-receiving layer, the ink-receiving layer comprising at least one binder and a cationized fumed silica prepared by copolymerizing at least one cationic monomer and at least one non-cationic monomer monomer in the presence of a fumed silica. A cationized fumed silica prepared by polymerizing the monomers in the presence of a fumed silica and a method of preparing an ink-jet recording material are also disclosed.

The invention discloses a growth crucible and method capable of adjusting the atmosphere of a silicon carbide single crystal growth system. The growth crucible capable of adjusting the atmosphere of the silicon carbide single crystal growth system comprises a crucible main body; a raw material cavity positioned in the crucible main body and used for filling a growth raw material of a silicon carbide single crystal; a growth cavity positioned in the crucible main body, positioned above the raw material cavity and used for growing seed crystals to obtain silicon carbide single crystal; a gas dredging cavity located in the crucible body and located below the raw material cavity, wherein a gas dredging assembly is arranged in the gas dredging cavity and used for releasing halogen gas into theraw material cavity so as to adjust the atmosphere of a growth system of the silicon carbide single crystal. The halogen gas can be released into the growth atmosphere at the initial growth stage of the crystal, the purpose of consuming excessive silicon at the initial growth stage of the crystal is achieved, the chemical composition of the growth atmosphere of the silicon carbide single crystal is further adjusted, the quality of the silicon carbide single crystal is improved, and corrosion to a graphite crucible is reduced.

The invention discloses emulsion which is prepared for a water-based two-component wood splice adhesive by taking carboxylated styrene-butadiene emulsion as a seed. The emulsion is prepared from the styrene-butadiene emulsion, a defoaming agent, a buffering agent, polyvinyl alcohol, a reactive emulsifier, an initiator, methacrylic acid, vinyl acetate, vinyl versatate, a functional monomer, a self-cross linking monomer, a preservative and the like. According to the emulsion for the wood splice adhesive, carboxylated styrene-butadiene is taken as the seed emulsion, flexible chains are introduced into emulsion particles, and therefore the anti-cracking property of the emulsion for the wood splice adhesive is improved; water is taken as a dispersion medium, use is convenient, no pollution is generated to the environment, after compounding is conducted, a polyisocyanate curing agent is added to prepare the two-component wood splice adhesive, and the functional monomer-primary hydroxyl group and the polyisocyanate curing agent in the emulsion achieve bridging, so that the strength and the water resistance are improved.

The invention relates to a preparation method for a polyhydroxyalkanoate grafted organic polyamine dispersant and application thereof. The dispersant is applied in a pesticide oil suspension. The dispersant has a chemical formula as described in the specification. In the chemical formula, P is an organic polyamine main chain; T is a residue O-R-CO or lactone of hydroxyl fatty acid; X is a modifier or an end capping agent which is a straight-chain or branched-chain and saturated or unsaturated residue with a fatty acid of C1 to C22; T and P are connected by an amido bond; X and T are connected by an ester group; m is an integer of 1 to 100; and n may be 0 or an integer of 1 to 100. The objective of the invention is to provide the preparation method for agricultural polyhydroxyalkanoate grafted organic amine dispersants; the dispersants have amino anchoring groups and solvated polyester chains; and with a special chemical structure, the dispersants have good dispersing and stabilizing effects in an environment-friendly oil suspension.