169results about How to "Porosity" patented technology

The invention discloses a quick-dry thin acrylic-acid protective coating, which mainly consists of water, cosolvent, acrylic-acid like emulsion, filler, quick dry agent, hole forming agent, dispersing agent, wetting agent, defoamer, flatting agent and thickener and the like. The invention further discloses an HDPE (high-density polyethylene) self-adhesive film waterproof protective coating layer, which is formed after the quick-dry thin acrylic-acid protective coating is sprayed on a HDPE self-adhesive layer uniformly by a reciprocating mechanical spraying method and drying the same. The quick-dry thin acrylic-acid protective coating is environment-friendly and non-toxic and can be dried quickly and has excellent flatting performance, and an HDPE self-adhesive film waterproof roll prepared by the HDPE self-adhesive film waterproof roll protecting layer has excellent pre-paving anti-adhesive effect with post-cast concrete, and the HDPE self-adhesive film waterproof roll protective layer and the post-cast concrete can be guaranteed to be adhered stably and firmly.

The invention provides a preparation method of fluorescent ceramic containing an aluminum oxide matrix. The preparation method sequentially comprises the following steps: mixing aluminum oxide, fluorescent powder and a sintering additive and removing impurities to obtain fluorescent ceramic precursor powder; then sintering the powder under an oxygen-free atmosphere to obtain the fluorescent ceramic. The grain diameter of each component is selected to be a pre-set size and the fluorescent ceramic precursor powder is subjected to high-pressure treatment in a sintering process; the sintering additive and corresponding nitrate are used as raw materials for introducing oxide. By adopting the preparation method provided by the invention, the aluminum oxide enters a liquid phase at relatively low temperature under the condition that the fluorescent powder has an unchanged crystal new look in a preparation process and the uniform and dense fluorescent ceramic with low porosity is obtained; the heat-conducting performance and luminous efficiency of the fluorescent ceramic are extremely improved.

The invention belongs to a wet material granulation principle and an equipment combination process, and particularly relates to a combined-type granulator. The combined-type granulator comprises a plurality of layers of combined box bodies, a temporary storage feed bin and a plurality of layers and groups of roller mills. Each group of roller mills is equipped with a rotary joint, a cleaning blade, an elastic stripping frame, a material baffle and a guide plate; a waste gas emptying interface is also arranged on each of the box bodies, and an air inlet at a lowest layer of the granulator is arranged on a bracket. The linear velocity of a tooth surface and the flow rate of volume of a rotary drum of each of the roller mills at a second layer are higher than those of a rotary drum of each of the roller mills at a first layer, and the linear velocity of a tooth surface and the flow rate of volume of a rotary drum with a reticular tooth socket or a single radial tooth socket of each of the roller mills at an adjacent lower layer are designed according to the volume properties of materials in the area. According to the granulator disclosed by the invention, hard foreign matters can be stripped, and simple granulation of soft materials in a cream state, a paste state, a slurry state and the like can be realized; meanwhile, caky and blocky materials can be pulled into monomer granules, soft and hard materials can simultaneously enter into the granulator, and granules at an outlet have a plurality of pores and are in an irregular shape.

The invention discloses an environmentally-friendly energy-saving polyurethane spraying composite material with ultralow density, which comprises the following components in part by weight: 20-60 parts of polyether polyol which takes glycerol as an initiator, 3-10 parts of amine catalyst, 0.5-3.0 parts of foam stabilizer, 22-30 parts of water, 30-45 parts of fire retardant and 95-120 parts of isocyanate. In the environmentally-friendly energy-saving polyurethane spraying composite material, pure water is used for replacing the traditional hydro chlorofluorocarbon (HCFC)-141b foaming agent, and the environmentally-friendly energy-saving polyurethane spraying composite material is an environmentally-friendly energy-saving polyurethane spraying foam with the ultralow density. The polyurethane spraying composite material has the ultralow density which can reach 5-10kg/m3. Because the polyurethane spraying composite material has tapping performance, the sound absorption performance can reach 70%. Meanwhile, the oxygen index of the environmentally-friendly energy-saving polyurethane spraying composite material reaches 23 and can pass the Society of Tool and Manufacturing Engineers (ASTME)-84 authentication.

A method for forming a porous dielectric material layer in an electronic structure and the structure formed are disclosed. In the method, a porous dielectric layer in a semiconductor device can be formed by first forming a non-porous dielectric layer, then partially curing, patterning by reactive ion etching, and final curing the non-porous dielectric layer at a higher temperature than the partial curing temperature to transform the non-porous dielectric material into a porous dielectric material, thus achieving a dielectric material that has significantly improved dielectric constant, i.e. smaller than 2.6. The non-porous dielectric material may be formed by embedding a thermally stable dielectric material such as methyl silsesquioxane, hydrogen silsesquioxane, benzocyclobutene or aromatic thermoset polymers with a second phase polymeric material therein such that, at the higher curing temperature, the second phase polymeric material substantially volatilizes to leave voids behind forming a void-filled dielectric material.

The invention discloses a low-pressure and low-humidity gas diffusion layer, a fuel cell and a preparation method. The gas diffusion layer comprises a conductive porous substrate layer, a hydrophobiclow-humidity adaptation layer and a micro-porous low-pressure adaptation layer. The conductive porous substrate layer includes a carbon fiber substrate sub-layer, a compressive sub-layer and uniformlydistributed conductive particles. The hydrophobic low-humidity adaptation layer is at least formed on the surface of the conductive porous substrate layer, and can lock a part of water to keep a proton exchange membrane wet in a low-humidity (0-70%) operation environment. The micro-porous low-pressure adaptation layer includes a porous material which is formed on one side of the hydrophobic low-humidity adaptation layer and uniformly distributed. The micro-porous low-pressure adaptation layer is hydrophobic, and the pores can ensure that the fuel permeates the gas diffusion layer and reachesthe proton exchange membrane to participate in the reaction in a low-pressure (0-75kPa) operation environment. Through the technical scheme, the mechanical strength of the gas diffusion layer can be improved, the gas diffusion layer has excellent gas diffusion performance and drainage performance, the fuel cell is enabled to operate stably in low-pressure and low-humidity environments, and technical support is provided for the adjustment of the bulk resistance.

The present invention discloses a deep circulation storage battery container formation diachylon, and is to solve the technical problem of short circulation life of conventional storage batteries. The diachylon of the present invention includes a positive diachylon and a negative diachylon. The positive diachylon includes the components by weight: 0.15-0.42% of carboxymethyl cellulose, 0.25-0.42% of anisotropy graphite, 0.15-0.25% of potassium sulfate, 0.30-0.42% of stannous sulfate, 0.07-0.10% of polyester staple fibers, 6.5-7.5% of dilute sulfuric acid, 9-10% of water, and 80.89-83.58% of a lead powder; and the negative diachylon includes the components by weight: 0.50-0.70% of barium sulfate, 0.20-0.45% of acetylene black, 0.15-0.25% of lignin, 6.00-6.50% of dilute sulfuric acid, 9-10% of water, and 82.10-84.15% of a lead powder.

The invention provides a water glass curing agent and a preparation method and application thereof. The water glass curing agent comprises aluminum phosphate, zinc oxide modified shell powder, powderysilicic acid/silica fume and barium sulfate according to a mass ratio of aluminum phosphate to zinc oxide modified shell powder of (4-7): (1-2), a mass ratio of aluminum phosphate to powdery silicicacid/silica fume of 7: (1-2) and a mass ratio of aluminum phosphate to barium sulfate of (4-7): (0.5-1). Through loading and sintering, the novel water glass curing agent is prepared. The preparationmethod realizes initial control of a curing speed of water glass and improves the water resistance and toughness after curing.

The invention relates to a calcium sulfate spherical particle alveolar bone repair material and a preparation method thereof. The calcium sulfate spherical particle alveolar bone repair material is mainly used for alveolar bone defect repair and also can be used for other bone defect repair, and belongs to the field of biomedical material. The calcium sulfate spherical particle alveolar bone repair material is characterized in that active ingredients are prepared from the following raw materials: (a) calcium sulfate, (b) molding liquid, and (c) surface modification liquid; and the size of the spherical particle is 0.5-2.0mm. The calcium sulfate is alpha type hemihydrate calcium sulfate powder. The surface modification liquid is soluble silicate aqueous solution. The calcium sulfate spherical particle alveolar bone repair material and the preparation method thereof have the following advantages: the provided calcium sulfate spherical particle alveolar bone repair material has the advantages of being excellent in biological activity, being capable of completely being degraded for a controllable period, and the like; good space can be provided for the growth of bone cells through big holes with the diameters of 183-732 microns produced by piling of spherical calcium sulfate particles in specific sizes; and the material is simple in preparation technology, short in preparation period and low in cost.

A preparation method of a novel graphene-molecular sieve composite gas purifying material comprises the following steps: 1) activating a 3A molecular sieve; 2) activating a graphene oxide, and obtaining a graphene suspension through ultrasonic dispersion; 3) adding the activated 3A molecular sieve and the graphene suspension into a hydrothermal reaction kettle according to a mass ratio ranging from (1:5) to (1:20), performing a hydrothermal reaction for 8-12h at 180-220 DEG C, filtering and drying a reaction product, and vacuumizing in a vacuum drying box to obtain the graphene-molecular sieve composite gas purifying material. The graphene-molecular sieve composite gas purifying material prepared according to the preparation method solves the problems in aspects of the specific surface area and the selectivity of the conventional adsorbent material, and has permanent porosity and pore diversity. The invention further provides the novel graphene-molecular sieve composite gas purifying material prepared according to the preparation method.

The invention belongs to the field of lithium battery preparation, and specifically relates to a manganese dioxide sulfur-carbon positive electrode and a preparation method. The preparation method comprises the following steps: 1) adopting a vapor deposition method, and uniformly mixing sublimed sulfur powder and conductive agent powder to obtain a sulfur-carbon composite material; 2) mixing the sulfur-carbon composite material obtained in the step 1), powdered sulfur, manganese dioxide, a dispersing agent and a binder, using 1-methyl-2-pyrrolidinone (NMP) as a solvent, sufficiently and uniformly stirring to obtain a mixed sizing agent; 3) uniformly coating the mixed sizing agent on the surface of a positive electrode current collector to form a positive electrode coating layer, then heating and drying at the temperature of 60 to 130 DEG C so as to obtain a primary manganese dioxide sulfur-carbon core-shell structure positive electrode; and 4) heating the pole piece of the primary manganese dioxide sulfur-carbon core-shell structure positive electrode obtained in the step 3) in a nitrogen environment, and carrying out in situ sublimation so that sulfur grows on a sulfur-carbon shell of the primary manganese dioxide sulfur-carbon core-shell structure to complete sulfur fixation, and thus forming a secondary manganese dioxide sulfur-carbon core-shell structure.

The invention discloses a cordierite compound ceramic filter element. The cordierite compound ceramic filter element is characterized by being prepared from the following raw materials in parts by weight: 13-15 parts of cordierite, 9-11 parts of mullite, 6-8 parts of silochrom, 4-7 parts of smectite, 8-10 parts of activated alumina, 3-5 parts of calcium sulfate, 2-3 parts of dimethyl silicon oil, 3-4 parts of sodium alginate, 3-5 parts of palm fibers, 2-3 parts of urea, 5-7 parts of modifying coconut active charcoal, and the defined amount of water. The cordierite compound ceramic filter element provided by the invention has the advantages that the silochrom is added, so that the adsorptive property and heat stability are good, the chemical property is stable, and the mechanical strength is high; the palm fibers are added, so that the tenacity of the filter element is added, meanwhile, the cordierite compound ceramic filter element has a porous property, and the filtering adsorptive property is improved; the modifying coconut active charcoal is added, so that the gap structure is developed, the adsorptive property is good, the intensity is high, the regeneration is easy, and the cordierite compound ceramic filter element is economical and durable, is long in service life, is corrosion-proof and can be used for air adsorption filtration.

The invention relates to uniform ultra-microporous activated carbon for gas separation and a preparation method of the uniform ultra-microporous activated carbon. According to the technical scheme of the preparation method, mixing semi-coke with KOH in a mass ratio being 1: (0.01-0.2), adding water and an activating aid to impregnate the mixture for 1-36 h; increasing the temperature to 800-950 DEG C in a programmed manner under N2 protection, controlling thermal decomposition, and introducing water for activation of part of steam for 0.5h-1.5h; finally, washing the mixture with acid and water until the mixture is neutral to obtain the uniform ultra-microporous activated carbon. The pore size is distributed centrally between 0.45 and 0.55 nm, the pores belong to ultra-micropores and have microporosity of 70% or more, and the adsorption capacity of hydrogen is 77cm<3>/g or higher. The semi-coke is taken as a raw material, low in price and low in energy consumption and needs not to be carbonized; an activation method integrates KOH impregnation pretreatment and activation of part of steam, little KOH is consumed, and the activation method has the characteristics of being low in cost and pollution, helpful for reducing corrosion of equipment and the like. The activated carbon prepared with the method has the characteristics of uniform pore size distribution, extremely rich ultra-microporous structure and the like, and can be used in gas separation fields such as pressure swing adsorption hydrogen making or hydrogen storage and the like.

The invention discloses a sludge dewatering and drying device and method, and belongs to the technical field of sludge treatment, wherein the device comprises a heating pre-dewatering chamber, upper-layer filter cloth, lower-layer filter cloth and a high-pressure dewatering assembly, the upper-layer filter cloth and the lower-layer filter cloth penetrate through a sludge conveying channel formed by the heating pre-dewatering chamber; the upper-layer filter cloth and the lower-layer filter cloth are fed and collected along the channel; the heating pre-dewatering chamber is provided with a feeding hole for inputting sludge; sliding rollers are arranged on the outer sides of the upper-layer filter cloth and the lower-layer filter cloth; the heating pre-dewatering chamber is provided with a flue gas inlet for heating and conditioning sludge in a filter cloth interlayer on line to realize heating and pre-dewatering; a high-pressure dewatering assembly is arranged at one end of the heating pre-dewatering chamber and comprises a high-pressure dewatering tank and a matched hydraulic cylinder, a circulating material distribution mechanism is arranged on the high-pressure dewatering tank tofold the interlayer filter cloth in the high-pressure dewatering tank in a reciprocating mode, and the hydraulic cylinder presses the multiple layers of filter cloth for high-pressure dewatering. Deepdrying dewatering is achieved, the moisture content of the finally obtained sludge is less than 10%, and the device has the advantages of being high in dewatering efficiency, low in operation cost, high in practicability and the like.