23results about How to "Liquid" patented technology

This invention belongs to the field of membrane separation technology, specifically relating to a method for preparing a polytetrafluoroethylene (PTFE) composite membrane. The preparation method includes: (1) dissolving a spinning aid, a barium source, a titanium source, and a manganese source in a composite solvent, and then electrospinning to obtain precursor fibers; subsequently, blending the precursor fibers with a grain refiner, and heat-treating to obtain doped ferroelectric fiber bundles; (2) further polymerizing organic acids, inorganic acids, conductive fillers, and conductive polymers with monomers and oxidants to finally obtain a conductive polyaniline composite; (3) incorporating Mxene and the conductive polyaniline composite into an aqueous PTFE emulsion, and then further incorporating the doped ferroelectric fiber bundles and stirring to obtain a suspension; the suspension is then coated, post-treated, and kept warm to obtain a PTFE composite membrane. This invention improves the long-term fouling resistance of the PTFE membrane by doping the doped ferroelectric fiber bundles, the conductive polyaniline composite, Mxene, and PTFE.

The invention relates to the technical field of biomass energy production, in particular to equipment and a process for preparing biomass natural gas through dry-type high-temperature anaerobic ferment.The equipment comprises a fermentation box body, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe and a gas outlet pipe, a first frame, a second frame and a third frame are sequentially arranged on the inner wall of the fermentation cavity in a staggered mode in the vertical direction, the material crushing and liquid supplying assembly comprises a material crushing mechanism and a pre-inoculation mixed liquid supplying mechanism, and the material uniformizing and stirring mechanism comprises a material uniformizing mechanism and a stirring frame mechanism. Therefore, the process of preparing the biomass natural gas through dry-type high-temperature anaerobic fermentation is realized, the problems of long retention time and low treatment efficiency are solved, the gas production rate and the production efficiency of the biomass natural gas are improved, and powerful support is provided for popularization and use of clean energy.

The utility model provides a combined resin coated abrasive tool, which relates to the technical field of resin coated abrasive tool processing and comprises a processing table, two fixing frames are fixedly mounted at the top of the processing table, positive and negative motors are fixedly mounted at the tops of the two fixing frames, and driving rods are fixedly mounted on one sides of the outer walls of the two positive and negative motors. And the outer surface walls of the two driving rods are fixedly sleeved with gears. According to the stirring device disclosed by the utility model, the two forward and reverse motors are simultaneously started through the controller to drive the two driving rods and the two gears to rotate, so that the two tooth rows and the strip-shaped plate can be driven to move up and down, and the driving motors, the stirring rods and the plurality of stirring blades are further driven to move up and down, so that the stirring track of the plurality of stirring blades to a mixture is changed; the combined resin coated abrasive tool raw materials can be stirred more sufficiently, the stirring effect is improved, it is guaranteed that slurry with certain viscosity and fluidity is prepared, and the production quality of the combined resin coated abrasive tool is improved.

The invention relates to gadolinium oxysulfide powder based on a molten salt method and a preparation method of the gadolinium oxysulfide powder. The preparation method specifically comprises the following steps: preparing a precursor solution, and cleaning and drying an obtained precipitation product to obtain precursor powder; the precursor powder is one of Gd2O2CO3, Gd2 (SO4) 3.8 H2O, Gd2 (OH) 4SO4. XH2O and Gd2 (OH) 5NO3. XH2O, and the precursor powder is one of Gd2O2CO3, Gd2 (SO4) 3.8 H2O, Gd2 (OH) 4SO4. XH2O and Gd2 (OH) 5NO3. XH2O; uniformly mixing the prepared precursor powder, a sulfur source and fused salt, putting the mixture into a crucible, sintering at high temperature in a protective atmosphere to enable the mixed powder to form a molten state, and cleaning and drying after sintering and cooling to obtain gadolinium oxysulfide powder; and the molten salt is one of Li2CO3 and Na2CO3, Li2CO3 and K2CO3, Li2CO3 and K2CO3, and Na2CO3. The invention also discloses a preparation method of the lithium ion battery. Compared with the prior art, the method has the advantages that the Gd2O2S powder is synthesized in the air or the reducing atmosphere or the inert atmosphere, compared with a traditional high-temperature solid-phase synthesis method, the synthesis temperature is greatly reduced, and the generated Gd2O2S is good in crystallinity, high in purity, free of impurity phases and high in dispersity.

This disclosure relates to a composition for preparing phase change composite materials, the phase change composite material itself, a preparation method thereon, and its applications. Based on the total weight of the composition, it comprises: 80-90% by weight of a phase change material, 5-17% by weight of a thermally conductive filler, and 3-15% by weight of a thickener. The phase change composite material has a phase change enthalpy of 80-250 J / g, a phase change enthalpy yield of 80-90%, a thermal conductivity of 1-10 W / m·K, and a melt index of 15-150 g / min. Using the composition of this disclosure to prepare the phase change composite material can improve the phase change enthalpy yield, while also exhibiting high thermal conductivity and a certain degree of plasticity in the molten state. Furthermore, the mixing and molding processes are simplified by using only a heated stirring pan or kneading pan, reducing production costs.

This invention discloses an explosion-proof enclosure, a molding die, and a molding method thereof, belonging to the field of composite material molding technology. The explosion-proof enclosure includes an inner surface and an outer surface, which together form the enclosure. It also includes a structural layer, a matrix layer, and embedded parts. The structural layer, matrix layer, and embedded parts are integrally hot-pressed. The structural layer is molded as the inner surface, and its interior is filled to form a reinforced structure. The matrix layer covers the structural layer and is molded as the outer surface. A molding die and a molding method are also disclosed. This invention, through synergistic innovation in materials, processes, and molds, systematically achieves high-performance, high-efficiency, and low-cost manufacturing of composite material explosion-proof enclosures. It simplifies the traditional multi-step, lengthy process into a pre-layout-assembly-hot-pressing integrated molding process, significantly improving production cycle time, product consistency, and mass production economy. It comprehensively resolves the contradiction between lightweight design, complex structural molding, and large-scale production.

The invention belongs to the field of catalysts, and relates to a catalyst for preparing aromatic hydrocarbon through alkane reforming, in particular to an indium modified molecular sieve based reforming catalyst and a preparation method and application thereof. The preparation method comprises a step-by-step impregnation method or a co-impregnation method. The step-by-step impregnation method comprises the following steps: adding a molecular sieve into a solution containing an indium compound for impregnation, then roasting to obtain an indium modified molecular sieve, then adding the indium modified molecular sieve into a solution containing a noble metal compound for impregnation, and finally roasting; the co-impregnation method comprises the following steps: adding the molecular sieve into a solution containing an indium-containing compound and a noble metal-containing compound for co-impregnation, and then co-roasting. The research accidentally finds that the alkane conversion rate, the aromatic hydrocarbon selectivity and the catalyst stability can be remarkably improved in the alkane aromatization reaction by performing indium modification on the basis of a catalyst for depositing noble metal on a molecular sieve by adopting an impregnation method.

The invention provides a crosslinking polyfunctional polymer, the prepolymer system of which is high in reaction activity and low in viscosity, has certain flowability at room temperature, and is adaptive to digital light processing 3D printing (DLP). The preparation method of the cross-linking polymer comprises the following steps: carrying out ring-opening polymerization on caprolactone by using polyol as an initiator to prepare a polyfunctional polycaprolactone precursor with the molecular weight of 300Da-800Da, and introducing a propenyl compound to the molecular terminal of the polycaprolactone precursor to obtain a double-bond modified low-molecular-weight polycaprolactone reaction product. And carrying out primary centrifugation, filtration and ethyl acetate elution on the reaction product to obtain a transparent colorless solution, carrying out rotary evaporation to remove the solvent, fully washing with water, carrying out secondary centrifugation, and drying to obtain the polycaprolactone prepolymer. Through verification, the polycaprolactone prepolymer disclosed by the invention has the characteristics of biosafety, biodegradability, low viscosity flowability, high-strength mechanical elastic modulus and the like, and can adapt to DLP 3D printing to prepare medical instruments.

The application relates to a novel body position pad, and belongs to the technical field of medical devices. The novel body position pad comprises an external wrapping piece and an internal fluid layer. The external wrapping piece comprises a first wrapping layer, a second wrapping layer and a third wrapping layer. The first wrapping layer is flexible. The second wrapping layer is arranged between the first wrapping layer and the third wrapping layer. The second wrapping layer supports the first wrapping layer and the third wrapping layer. The first wrapping layer and the third wrapping layer are both waterproof. The first wrapping layer and the third wrapping layer can isolate air. The external wrapping piece is arranged to form a containing cavity. The internal fluid layer is filled in the containing cavity. The internal fluid layer is flowable. The application can improve the problem that the shaping effect of the body position pad is not easy to maintain.

The application discloses a glass frit for a single-crystal silicon solar cell front paste, a paste, and a single-crystal silicon solar cell. The glass frit comprises 1-30 mol% of lithium oxide, 5-40 mol% of bismuth oxide, 5-40 mol% of lead oxide, 1-40 mol% of silicon oxide, and X, wherein X is any one or a mixture of several of copper oxide, cesium oxide, rubidium oxide, sodium oxide, potassium oxide, aluminum oxide, magnesium oxide, strontium oxide, tin oxide, zinc oxide, or tungsten oxide, and the molar content of any one of the oxides in X is 1-10 mol%, and the content of X is not more than 50 mol%. The conductive paste prepared by using the glass frit contains a lead-bismuth-silicon oxide glass system, the system has enhanced resistance to acetic acid attenuation, ensures a sintering window at a high-temperature fast-firing sintering temperature, and X has strong corrosiveness, so that a lower contact area can be obtained. The conductive paste has high resistance to acetic acid in a wide sintering window.

The present application relates to a kind of forging method of three-cylinder crankshaft, belong to engine parts manufacturing field.It includes: S1: heating to work temperature to bar stock;S2: using press bending die to press bend second connecting rod neck;S3: using connecting rod neck pre-pressing die to first connecting rod neck and third connecting rod neck are pre-pressed;S4: using balance block pre-pressing die to first connecting rod neck balance block and third connecting rod neck balance block are pre-pressed;S5: using final forging die to the product obtained in step S4 is final forged;S6: to the product obtained in step S5 is trimmed.The present application is favorable to reduce the amount of material flow to connecting rod neck surface in the process of crankshaft forging bar stock core portion, to improve the overall quality and use strength of crankshaft.

The utility model relates to an artificial reef of preventing being blocked relates to the aquaculture technology field for solving the problem that the artificial reef of prior art is easy to be blocked by silt, an artificial reef of preventing being blocked, including base, fish guard and connecting system, the fish guard includes fish guard frame, frame support, flow guide disc, disc support group, bottom sleeve and a plurality of baffle, the fish guard frame is the cuboid frame structure, each baffle is arranged in the fish guard frame respectively, the upper side portion of each baffle is rotatably connected in the upper portion of fish guard frame respectively, the lower portion of fish guard frame is equipped with a plurality of limiting protrusions, and the limiting protrusion is used for limiting the amplitude of baffle rotation, the flow guide disc is arranged below the fish guard frame, and the upper surface of flow guide disc is in the shape of high in the middle and low on the four sides. Advantageous effects are, can solve the problem that the artificial reef of prior art is easy to be blocked by silt.

The application relates to a wet preparation device, a wet preparation system and a solar cell manufacturing production line. The wet preparation device comprises a wet machine table having a preparation tank, an inlet and outlet opening communicated with the preparation tank and used for feeding and discharging the cell piece on the top surface of the wet machine table, and two cover plates arranged along the width direction of the wet machine table and connected with the wet machine table, the two cover plates are matched and used for jointly opening or closing the inlet and outlet opening, the top surface of the cover plate is configured to gradually descend along the width direction of the wet machine table and from the center of the wet machine table to the edge direction of the wet machine table when the cover plate closes the inlet and outlet opening, and a flow channel for circulating hot water is formed in the cover plate. The wet preparation device, the wet preparation system and the solar cell manufacturing production line provided by the application can reduce the formation of crystals.

This invention relates to a containerized asphalt tank, comprising a container and a tank body. A sturdy door is provided at one end of the container. The tank body is installed inside the container, with a gap between the container and the tank body. The tank body is equipped with an inlet pipe, an outlet pipe, and a flue pipe. A temperature control component is provided on the tank body, comprising electric heaters and heating tubes. Two electric heaters are located at one end of the tank body, and the heating tubes are located inside the tank body and connected between the two electric heaters. The heating tubes are filled with a heat-conducting medium. Several stirring components are provided on the container to maintain the fluidity of the asphalt. This invention effectively ensures the performance of the asphalt inside the tank.

The utility model discloses a support adhesive tape for a photovoltaic frame, the photovoltaic frame comprises a mounting cavity for mounting a photovoltaic laminated piece, the mounting cavity comprises a first wall, a second wall and a third wall which are sequentially bent and connected to form a C-shaped notch, and the inner wall of the first wall faces the surface of the photovoltaic laminated piece; the photovoltaic laminating piece is characterized in that the supporting adhesive tape is fixed on the inner wall of the first wall, and the supporting adhesive tape is used for supporting the surface of the photovoltaic laminating piece during gluing and limiting glue liquid from flowing to the surface of the photovoltaic laminating piece. According to the utility model, glue overflow on the surface of the photovoltaic laminated piece can be avoided.

The invention relates to the technical field of building waterproof materials, and particularly discloses a non-cured rubber asphalt waterproof coiled material and a preparation method thereof.The non-cured rubber asphalt waterproof coiled material comprises a tire base layer, non-cured rubber asphalt layers coating the two faces of the tire base layer, and isolating membrane layers compounded on the surfaces of the non-cured rubber asphalt layers; the non-cured rubber asphalt layer is prepared from the following raw materials: matrix asphalt, a rubber modifier, liquid tackifying resin, a functional aid, sodium bentonite and a plasticizer; the preparation method comprises the following steps: coating two surfaces of a tire base layer with a non-cured rubber asphalt material to obtain a non-cured rubber asphalt layer, and then coating the surface of the non-cured rubber asphalt layer with an isolating membrane layer to obtain the required non-cured rubber asphalt waterproof coiled material, the preparation method disclosed by the invention is simple, and the obtained non-cured rubber asphalt waterproof coiled material has excellent adhesive property, creep property, self-healing property, construction property and durability, and meets the high-performance requirements of modern buildings on waterproof materials.

The invention belongs to the technical field of water conservancy and transportation engineering maintenance, and particularly relates to a ship lock concrete surface repairing coating in a seawater soaking environment and a construction method of the ship lock concrete surface repairing coating. Comprising a permeation anchoring bottom coating, a stress buffering middle coating and a super-weather-resistant protective surface coating which are sequentially arranged from inside to outside, and the permeation anchoring bottom coating is a bi-component epoxy-biomineralization composite system. The construction method of the ship lock concrete surface repairing coating comprises the steps that a base plane is diagnosed and cleaned; constructing a negative pressure microenvironment; carrying out in-situ vacuum dehydration and exclusion; negative-pressure prime coat leading-in is carried out; performing controlled ventilation and re-pressing permeation; and constructing a multi-layer system. According to the method, capillary water wedge resistance can be overcome under the condition that a dry base plane does not need to be stopped for a long time, deep penetration and high-strength anchoring of a repairing material to concrete microcracks are achieved, and the chloride ion penetration resistance and durability of a ship lock structure are greatly improved.

This application discloses a barrel, a material storage container, and a material storage device. The barrel has a connecting portion, a barrel wall, and a barrel bottom sequentially arranged along its extending direction; the connecting portion has an opening; the barrel wall, at least near the barrel bottom, forms a taper along the extending direction of the barrel to allow the barrels to be nested and stacked. The material storage container includes a lid, a tube, and the aforementioned barrel. The lid covers the opening and connects to the connecting portion; the lid has a first opening; one end of the tube is connected to the first opening, and the other end extends into the bottom of the barrel. The material storage device includes a housing and at least one material storage container as described above; the housing has a receiving cavity corresponding to the material storage container, and the material storage container is inserted into the receiving cavity. Using the above technical solution helps to reduce manufacturing costs and complexity, and reduces the stacking volume of the various components of the material storage container during transportation and storage.

The investment precision casting process comprises the following steps that firstly, a hollow workpiece wax mold is prepared, a water-soluble core is prefabricated, the two ends of the water-soluble core are clamped through a blade body mold, a plurality of supporting points used for supporting the water-soluble core are arranged on the portion, located on the inner side of a cavity, of the blade body mold, and the water-soluble core is supported by the supporting points; wax is injected into the cavity, and a wax mold with a water-soluble core is obtained; 2, a hollow workpiece wax mold is extracted, the water-soluble core is hydrolyzed, and the hollow workpiece wax mold is obtained; 3, wax mold inner cavity mold core preparation and shell manufacturing are conducted, specifically, the surface of the wax mold in the step 2 is dip-coated with multiple layers of slurry and powder, blowing drying is conducted to form the shell, semi-self-hardening refractory slurry is poured into the shell, and a hard mold core is formed to resist erosion and acting force of molten steel during pouring; 4, dewaxing, smelting and casting; and 5, cleaning and shaping a casting and carrying out a subsequent heat treatment process, so that a formed workpiece is obtained. And sixthly, the performance quality inspection procedure is conducted on the formed workpiece in the fifth step.

The utility model provides a reinforced exhaust charging barrel for an injection molding machine, which relates to the technical field of injection molding machines, and comprises a screw discharging mechanism for extruding and conveying raw materials, the screw discharging mechanism comprises a charging barrel and a discharging screw inside the charging barrel, a dehumidification mechanism is arranged in the middle of the charging barrel, the dehumidification mechanism comprises a dehumidification charging barrel, and the dehumidification charging barrel is provided with an exhaust port. The dehumidification charging barrel is a component internally provided with a cylindrical through hole, one end of the dehumidification charging barrel is communicated with the middle of the charging barrel, a pressure relief hole is further formed between the dehumidification charging barrel and the charging barrel, an exhaust hole is formed in the position, close to the top, of the dehumidification charging barrel, and the separation screw rotates in the dehumidification charging barrel and is coaxially arranged in the dehumidification charging barrel. The separation screw is used for separating raw materials and water vapor and extruding and conveying the raw materials to return to the charging barrel. The device has the advantages that raw materials and water vapor in injection molding raw materials can be effectively separated, the separation and removal effect of the water vapor is improved, meanwhile, waste of the raw materials is reduced, and the influence on the production cycle and the production quality of injection molding products is reduced.

The hot air circulation device comprises a supporting frame, supporting rods are arranged at the four corners of the supporting frame respectively, a plurality of supporting strips used for supporting a dustbin are arranged in the top of the supporting frame at intervals, and second air blowing pipes are arranged on the two sides of the top of the supporting frame respectively. At least one first blowing pipe is arranged at the bottom of the supporting frame, a plurality of nozzles are arranged at the tops of the first blowing pipe and the second blowing pipe, the first blowing pipe blows air towards the bottom of the dustbin, the second blowing pipe blows air towards the two sides of the dustbin, and one end of the first blowing pipe and one end of the second blowing pipe are connected to the second connecting pipe. When the garbage can is used and the high-pressure fan works, hot air in the baking finish house is guided into the third connecting pipe through the air guide pipe, and then hot air flow is blown around the garbage can from the nozzles, so that air around the garbage can has fluidity, heat in the baking finish house can move around the garbage can, and the garbage can is prevented from being heated unevenly.

The utility model relates to the technical field of agricultural instruments, in particular to a precision seed-metering device of a seeder, which comprises a connecting shell, a stockpiling bin is arranged in the connecting shell, a stirring seed-metering structure is connected in an inner cavity of the connecting shell, an adjustable quantitative structure is connected onto the stirring seed-metering structure, and the adjustable quantitative structure is connected onto the connecting shell. The side wall of the connecting shell is connected with a controller, the stirring seed-metering structure comprises a driving motor, the driving motor is connected into an inner cavity of the connecting shell through a connecting seat, the driving end of the driving motor is connected with a driving rod through a coupler, and the driving rod is connected with a stirring device. According to the precise seed-metering device of the seeding machine, the adjustable quantitative structure is arranged in the precise seed-metering device of the seeding machine, so that the adjusting rod in the adjustable quantitative structure is rotated to pass through the transmission structure, and the distance between the multiple groups of movable partition plates can be adjusted; therefore, the quantity of the seed-metering device during seed metering can be accurately controlled according to the requirement of seed metering.

This invention discloses an anti-clogging road drainage filtration structure in the field of road drainage filtration technology. It includes a road surface, a drainage channel, a movable fence, a reset component for resetting the movable fence, and a collection component for collecting leaves. A rotating groove is connected to the right end of a limiting groove, the diameter of which is equal to the diagonal length of the limiting block. The collection component includes a collection groove, a mounting frame, a lower support plate, and a rotating component for rotating the lower support plate. A collection groove is provided on the right end face of the drainage channel. The mounting frame is fixedly installed on the upper end face of the drainage channel, and the lower support plate is rotatably installed within the mounting frame. Water-permeable grooves are provided on both the front and rear ends of the fixed frame. This device can clear accumulated materials such as leaves when the movable fence is blocked, preventing large amounts of water accumulation on the road surface and ensuring normal pedestrian passage. Furthermore, all the cleared accumulated materials, such as leaves, are collected in the collection groove for convenient subsequent centralized processing by sanitation workers.