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45results about How to "Resize" patented technology

Hydrophobic silica gel composite resin-based VOC adsorbent

The invention discloses a hydrophobic silica gel composite resin-based VOC adsorbent. A synthetic method for the adsorbent comprises the following steps: (1) pretreatment of silica gel; (2) silanization of the surface of the silica gel; (3) preparation of a polymer precursor of a resin and the silica gel: a step of dissolving a divinylbenzen monomer and the initiator azobisisobutyronitrile in tetrahydrofuran in an ice water bath, carrying out mixing under stirring so as to obtain a resin polymer fluid, and adding a certain amount of the resin polymer fluid in the silane-modified silica gel drop by drop to form moist silica gel; and (4) preparation of the hydrophobic silica gel composite resin-based VOC adsorbent: a step of conveying the moist silica gel prepared in step (3) to a crystallization kettle, carrying out crystallization at a temperature of 100 to 150 DEG C for 10 to 50 h so as to obtain a sample and drying the sample at a temperature of 50 to 110 DEG C for 5 to 10 h so as to obtain the adsorbent. With the synthetic method in the invention, the surface of the silica gel presents hydrophobicity, the size of a silica gel channel can be reduced, a specific surface area of the silica gel is increased, and preferential adsorption capability of the silica gel in absorption of VOC gas is greatly improved, so the hydrophobic silica gel composite resin-based VOC adsorbent has wide application prospects.
Owner:ZHEJIANG UNIV OF TECH

Plastic detection sample cutting device

This patent discloses a plastic detection sample cutter, which relates to a sample cutter; the plastic detection sample cutter includes a base, a pillar and a knife holder; the pillar is fixedly connected to the base, and the pillar is perpendicular to the base, and the knife rest and the pillar Sliding connection, and a return spring is set on the pillar, and the return spring is located between the base and the knife holder; the base is provided with vertical and horizontal knife grooves, and the vertical and horizontal blades are installed on the knife holder, and the knife grooves separate the upper plane of the base Divided into a number of sub-grids, between the blades are provided with a number of pressing columns that are engaged on the tool holder, the pressing columns can slide relative to the tool holder in the vertical direction, and there is a top pressure column between the pressing column and the tool holder. Spring; the knife groove corresponds to the blade, and the distribution grid corresponds to the pressing column. When the blade of the plastic testing sample cutter applies pressure to the plastic film, the pressing column can first compress the plastic film, thereby avoiding plastic deformation, so that the cutting quality of the sample is higher and the size is more accurate.
Owner:重庆敏驰塑胶有限公司

Gear-ring-unwinding high-speed counter-current chromatograph

The invention discloses a gear-ring-unwinding high-speed counter-current chromatograph. The gear-ring-unwinding high-speed counter-current chromatograph comprises an upper plate, a middle plate and a lower plate, wherein an unwinding gear ring coaxial with the middle plate is fixed above the middle plate, the lower plate is driven to rotate through a drive shaft, the unwinding gear ring is fixed, the teeth of the unwinding gear ring are distributed on the inner ring of the unwinding gear, multiple groups of gears which mesh with the inner ring of the unwinding gear ring are arranged along the circumferential direction of the inner ring of the unwinding gear ring, gears of adjacent groups do not mesh with one another, each group of gears comprises two gears which mesh with each other, one gear of each group of gears drives one separation column, the other gear of each group of gears drives one unwinding shaft, each separation column is mounted on a separation shaft, the upper ends of each unwinding shaft and each separation shaft are connected with the upper plate, and the lower ends of each unwinding shaft and each separation shaft are connected with the middle plate; each unwinding shaft and each separation column rotate along with a rotation support; a liquid inlet pipe penetrates the central shafts of the upper plate and the middle plate and is serially connected with liquid conveying pipes of multiple groups of separation columns and unwinding shafts, and liquid finally is discharged from a liquid outlet pipe.
Owner:SHANDONG ANALYSIS & TEST CENT

Biomimetic synthesis method of size-controllable prismatic bismuth phosphate photo-catalyst

The invention discloses a biomimetic synthesis method of a size-controllable prismatic bismuth phosphate photo-catalyst. The biomimetic synthesis method comprises the following steps: (1) dissolving bismuth nitrate pentahydrate into a nitric acid solution of which the molar concentration is 1mol/L, uniformly stirring, adding gelatin, and continuously stirring for 2 hours to obtain a mixed solution; (2) adding sodium dihydrogen phosphate of which the molar quantity is equal to that of bismuth nitrate pentahydrate into the mixed solution obtained in the step (1), stirring for 0.5 hour, regulating the pH value of the system to be 1-7 by using ammonia water, continuously stirring for 0.5 hour, transferring to a hydrothermal reaction kettle, performing hydrothermal reaction for 6-24 hours at 140-210 DEG C, performing centrifugal separation, washing, and performing vacuum drying for 12 hours at 60 DEG C to prepare the prismatic bismuth phosphate photo-catalyst. The biomimetic synthesis method disclosed by the invention can avoid the synthesis in an organic solvent or a mixed solvent of an organic reagent and water, and also can avoid regulating the sizes of particles by using the organic solvent which is harmful to the environment, so that the biomimetic synthesis method is a synthetic method which is low in cost and is environment-friendly.
Owner:HENAN NORMAL UNIV

In-mold blank tamping device for landscape walkway brick mold

InactiveCN114311259ATo achieve the purpose of uniform weightFacilitate automatic quantitative feedingMouldsFeeding arrangmentsGear driveBrick
A quantitative feeding mechanism comprises a power gear, a cover plate and a roller column, the lower end face of the power gear is fixedly connected with a first belt wheel, the first belt wheel is in transmission connection with a second belt wheel through a belt, and the upper end face of the second belt wheel is fixedly connected with a first shaft rod; the upper end of the first shaft rod is fixedly connected with a feeding cylinder turntable, the outer surface of the lower end of the feeding cylinder turntable is slidably connected with a discharging cylinder turntable, one end of the discharging cylinder turntable is rotatably connected with a cover plate, and one end of the cover plate is fixedly connected with a roller column. The adjusted raw materials are put into a filling hopper, a main semicircular gear drives a power gear to rotate intermittently, the power gear drives a first belt wheel to rotate, the first belt wheel drives a second belt wheel to rotate through a belt, the second belt wheel drives a first shaft rod to rotate, and the first shaft rod drives a feeding barrel rotating disc and a discharging barrel rotating disc to rotate to the lower end of the filling hopper; and raw materials filled in the filling funnel are leaked into the upper material barrel rotating disc and the lower material barrel rotating disc.
Owner:滁州市和美古建材料有限公司

Drawers and Refrigerators

The invention provides a drawer and a refrigerator. The drawer comprises a box and a partition. The upper end of the outer wall of the box is provided with an assembling portion. The assembling portion is provided with a sliding groove which is open on one end. The inner wall of the sliding groove is provided with electrode strips. The partition comprises a main board and an edge-wrapping structure. The main board is provided with a humidifying assembly. The main board is in a holding cavity of the box. The edge-wrapping structure is arranged on the outer side of the assembling portion. The edge-wrapping structure can slide on the assembling portion. The edge-wrapping structure comprises a baffle, the side of the baffle, facing the sliding groove, is provided with electrode columns. The top ends of the electrode columns contact with the electrode strips. The electrode columns are electrically connected with the humidifying assembly. In the technical scheme, the main board is provided with the humidifying assembly, and the main board can move in the box, so that multi-wet-area storage space of the drawer is realized, and the size of the storage space can be adjusted at will. Through cooperation of the sliding groove and the baffle, the electrode strips and the electrode columns are isolated from the external, thereby improving security of the humidifying assembly when the humidifying assembly humidifies.
Owner:HEFEI HUALING CO LTD +1

Hydrophobic silica gel composite resin-based VOC adsorbent

The invention discloses a hydrophobic silica gel composite resin-based VOC adsorbent. A synthetic method for the adsorbent comprises the following steps: (1) pretreatment of silica gel; (2) silanization of the surface of the silica gel; (3) preparation of a polymer precursor of a resin and the silica gel: a step of dissolving a divinylbenzen monomer and the initiator azobisisobutyronitrile in tetrahydrofuran in an ice water bath, carrying out mixing under stirring so as to obtain a resin polymer fluid, and adding a certain amount of the resin polymer fluid in the silane-modified silica gel drop by drop to form moist silica gel; and (4) preparation of the hydrophobic silica gel composite resin-based VOC adsorbent: a step of conveying the moist silica gel prepared in step (3) to a crystallization kettle, carrying out crystallization at a temperature of 100 to 150 DEG C for 10 to 50 h so as to obtain a sample and drying the sample at a temperature of 50 to 110 DEG C for 5 to 10 h so as to obtain the adsorbent. With the synthetic method in the invention, the surface of the silica gel presents hydrophobicity, the size of a silica gel channel can be reduced, a specific surface area of the silica gel is increased, and preferential adsorption capability of the silica gel in absorption of VOC gas is greatly improved, so the hydrophobic silica gel composite resin-based VOC adsorbent has wide application prospects.
Owner:ZHEJIANG UNIV OF TECH

Drawer and refrigerator

The invention provides a drawer and a refrigerator. The drawer comprises a box and a partition. The upper end of the outer wall of the box is provided with an assembling portion. The assembling portion is provided with a sliding groove which is open on one end. The inner wall of the sliding groove is provided with electrode strips. The partition comprises a main board and an edge-wrapping structure. The main board is provided with a humidifying assembly. The main board is in a holding cavity of the box. The edge-wrapping structure is arranged on the outer side of the assembling portion. The edge-wrapping structure can slide on the assembling portion. The edge-wrapping structure comprises a baffle, the side of the baffle, facing the sliding groove, is provided with electrode columns. The top ends of the electrode columns contact with the electrode strips. The electrode columns are electrically connected with the humidifying assembly. In the technical scheme, the main board is provided with the humidifying assembly, and the main board can move in the box, so that multi-wet-area storage space of the drawer is realized, and the size of the storage space can be adjusted at will. Through cooperation of the sliding groove and the baffle, the electrode strips and the electrode columns are isolated from the external, thereby improving security of the humidifying assembly when the humidifying assembly humidifies.
Owner:HEFEI HUALING CO LTD +1

Biomimetic Synthesis of Size-Controllable Prismatic Bismuth Phosphate Photocatalyst

The invention discloses a biomimetic synthesis method of a size-controllable prismatic bismuth phosphate photo-catalyst. The biomimetic synthesis method comprises the following steps: (1) dissolving bismuth nitrate pentahydrate into a nitric acid solution of which the molar concentration is 1mol / L, uniformly stirring, adding gelatin, and continuously stirring for 2 hours to obtain a mixed solution; (2) adding sodium dihydrogen phosphate of which the molar quantity is equal to that of bismuth nitrate pentahydrate into the mixed solution obtained in the step (1), stirring for 0.5 hour, regulating the pH value of the system to be 1-7 by using ammonia water, continuously stirring for 0.5 hour, transferring to a hydrothermal reaction kettle, performing hydrothermal reaction for 6-24 hours at 140-210 DEG C, performing centrifugal separation, washing, and performing vacuum drying for 12 hours at 60 DEG C to prepare the prismatic bismuth phosphate photo-catalyst. The biomimetic synthesis method disclosed by the invention can avoid the synthesis in an organic solvent or a mixed solvent of an organic reagent and water, and also can avoid regulating the sizes of particles by using the organic solvent which is harmful to the environment, so that the biomimetic synthesis method is a synthetic method which is low in cost and is environment-friendly.
Owner:HENAN NORMAL UNIV

A high-speed countercurrent chromatograph with ring unwinding

The invention discloses a high-speed countercurrent chromatograph with an unwound gear ring, which comprises an upper plate, a middle plate and a lower plate, and an unwound gear ring coaxial with the middle plate is fixed above the middle plate. The lower disc drives its rotation through a drive shaft, the unwinding gear ring is fixed, and the teeth of the unwinding gear ring are distributed on its inner ring, and there are multiple sets of meshing gears along the circumferential direction of the unwinding gear ring inner ring Gears, the gears between adjacent groups are not meshed, and each group of gears consists of two intermeshing gears, one of which drives a separation column, and the other gear drives an unwinding shaft, said separation column is mounted on a separation shaft On the top, the upper end of the unwinding shaft and the separation shaft are connected to the upper plate, and the lower end is connected to the middle plate; at the same time, the unwinding shaft and the separation column rotate with the rotating bracket; after the liquid inlet pipe passes through the central axis of the upper plate and the middle plate, it is sequentially After connecting multiple groups of separation columns and infusion tubes of uncoiled shafts in series, it is finally discharged from the liquid outlet tube.
Owner:SHANDONG ANALYSIS & TEST CENT
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