176results about How to "Extended path" patented technology

The invention relates to the technical field of epoxy resin coatings, and discloses an inorganic composite nano anticorrosive coating material and a preparation method thereof. The inorganic composite nano anticorrosive coating material comprises a component A, a component B and a component C, wherein the component C is obtained by mixing a functional modified inorganic composite nano material and aluminum sorbate; the component A is obtained by mixing modified epoxy resin, a defoaming agent and an anti-settling agent, and the component B comprises a polyamide curing agent. The inorganic composite nano anticorrosive coating material disclosed by the invention has excellent toughness, wear resistance, corrosion resistance, antibacterial and antifouling properties and ultraviolet resistance.

The invention discloses coconut juice processing equipment, and particularly relates to the technical field of coconut juice processing, and the coconut juice processing equipment comprises a processing equipment body and a material mixing assembly; the processing equipment body comprises a barrel body; the material mixing assembly is arranged on the barrel body; the mixing assembly comprises a U-shaped bracket, a fixed seat, a servo motor, a transmission shaft, a movable groove, a movable ball, a transmission rod, a connecting rod and a stirring rod; the plurality of U-shaped brackets are fixedly arranged on the outer surface of the barrel body in an annular array; the fixed seat is fixedly arranged among the plurality of U-shaped brackets; the servo motor is fixedly arranged on the fixed seat through a motor seat; the transmission shaft rotationally penetrates through the fixed seat; a movable groove is formed in the top face of the can body. The movable ball is movably arranged in the movable groove in a penetrating manner; the transmission rod penetrates through the movable ball; the connecting rod is fixedly arranged on the transmission shaft; the stirring rod is fixedly connected with one end of the transmission rod; the device is ingenious and reasonable in design, the position of the stirring rod can be changed while coconut juice is mixed and stirred, the use cost is reduced, and the processing and mixing efficiency of the coconut juice can be improved.

The invention relates to the technical field of grain drying equipment, in particular to a low-temperature recycling type efficient energy-saving grain drying machine which comprises an air inlet channel, an air outlet channel, a rotational flow filtering mechanism and an adsorption filtering mechanism. The air inlet channel is connected with an air inlet system; the air outlet channel is connected with an exhaust system; the rotational flow filtering mechanism is arranged in the air outlet channel; the adsorption filtering mechanism is connected with the rotational flow filtering mechanism; water and dust particles in high-temperature waste gas are separated and then directly introduced into the evaporator, the evaporator is heated and then introduced into the heat exchanger to be heated, the filtered and heated gas flows through the outer surface of a channel where the waste gas passes, and redundant heat of the filtered and heated gas is transferred to the waste gas; waste heat recovery is achieved, and the temperature of gas entering the drying tower is controlled to be appropriate; the problems that when dust exists in grains, dried damp and hot waste gas carries the dust to be discharged, and the heat exchange efficiency is gradually reduced when the waste gas carrying the dust is recycled are solved.

The invention provides an ocean engineering anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from the following raw materials: fluorocarbon resin, modified synthetic mica, modified basalt fibers, modified carbon nanotubes, nano silicon dioxide, nano zinc oxide, nano titanium dioxide, carbon fibers, zinc phosphate, hydroxyl-terminated polybutadiene, a plant extract, organic tin and the like. The modified synthetic mica and the modified carbon nanotubes are modified by adopting pentaerythritol stearate, cellulose nitrate and sodium hexametaphosphate; the modified basalt fiber is modified by adopting sodium stannate, polyvinyl alcohol and sodium hexametaphosphate; the plant extract is ethanol percolation extract of kandelia candel leaves and mangnolia officinalis leaves. All the components are used in a matched mode according to a certain proportion, and the advantages of being excellent in anti-corrosion performance, good in mechanical performance, excellent in anti-aging performance, environmentally friendly and the like are achieved.

The invention provides silicone rubber for a composite insulator and a preparation method of the silicone rubber for the composite insulator. The silicone rubber composition is prepared from the following raw materials in parts by weight: 20 to 80 parts of first methyl vinyl silicone rubber raw rubber, 10 to 50 parts of second methyl vinyl silicone rubber raw rubber, 20 to 60 parts of white carbon black, 1 to 15 parts of hydroxyl silicone oil, 80 to 120 parts of aluminum hydroxide, 1 to 10 parts of P-N-Si tracking-resistant auxiliary agent, 0.1 to 2.2 parts of first silane coupling agent, 1 to 4 parts of dimethyl silicone oil and 0.01 to 1 part of release agent. The preparation raw materials of the P-N-Si tracking resistant auxiliary agent comprise a second silane coupling agent, phytic acid and melamine, the aluminum hydroxide is silane modified aluminum hydroxide, and the particle size D50 of the aluminum hydroxide is 1-5 [mu] m. Through cooperation of the P-N-Si anti-tracking auxiliary agent and the silane modified aluminum hydroxide, the filling amount of the aluminum hydroxide can be reduced while the anti-tracking performance of the composite insulator silicon rubber is improved, and the problems of processability and poor mechanical performance are effectively solved.

The invention discloses lyocell spinning equipment which comprises a coagulating bath tank used for containing coagulating bath liquid; at least partial section of the wire guide pipe horizontally extends, one end of the wire guide pipe is provided with a liquid inlet communicated with the coagulating bath tank, and the other end of the wire guide pipe is provided with a wire outlet; the spinning nozzle is arranged above the coagulating bath tank, a spinning opening of the spinning nozzle faces a tank opening of the coagulating bath tank, and tows sprayed out of the spinning opening enter the coagulating bath tank to be preliminarily coagulated, then enter the yarn guide pipe to be coagulated and then are pulled out of a yarn outlet of the yarn guide pipe. According to the invention, through the cooperation of the coagulating bath tank, the spinning nozzle and the wire guide pipe, the optimized design of the spinning equipment is realized, the spinning nozzle sprays the fibers into the coagulating bath tank for preliminary solidification, then the tows enter the wire guide pipe, and the horizontal extension section of the wire guide pipe prolongs the retention time of the fibers in coagulating bath liquid, so that the fibers are ensured to be fully solidified; and the mechanical property and the quality consistency are improved.

The invention discloses a preparation method of a PANI-ZIF-8 / PA composite coating on the surface of a metal bipolar plate, and the preparation method comprises the following steps: firstly, placing the pretreated metal bipolar plate in a mixed solution, obtaining a conductive polymer PANI bottom layer through a constant current deposition method, then dispersing ZIF-8 and PA in deionized water to obtain a ZIF-8 / PA coating, and finally, preparing the PANI-ZIF-8 / PA composite coating on the surface of the metal bipolar plate. Then, the PANI coating is coated with the ZIF-8 / PA coating in a spinning mode, and a PANI-ZIF-8 / PA composite coating is formed; the adhesive force of the PANI bottom layer on the metal bipolar plate is improved through the electro-deposition technology, the corrosion resistance of the PANI-ZIF-8 / PA composite coating is improved through the surface ZIF-8 / PA coating, and the PANI-ZIF-8 / PA composite coating has good application prospects in the fields of proton exchange membrane fuel cells and proton exchange membrane water electrolysis hydrogen production.

The invention discloses a micro-channel reactor and micro-channel reaction equipment, the micro-channel reactor comprises a reaction plate, a support transition plate and a heat exchange plate which are connected in a laminated manner, grooves are processed in the reaction plate to form micro-reaction channels, grooves are processed in the heat exchange plate to form heat exchange channels, and the support transition plate is separated between the reaction plate and the heat exchange plate; the micro-reaction channel comprises at least two micro-channel units and a middle flow channel connected with the adjacent micro-channel units, each micro-channel unit comprises a flow channel inlet, a flow channel outlet and a heart-shaped mixing cavity, an arc-shaped flow baffle and at least one turbulent flow column are arranged in the heart-shaped mixing cavity, the concave side of the arc-shaped flow baffle faces the flow channel inlet, and the convex side of the arc-shaped flow baffle faces the turbulent flow column. And the turbulent flow column is arranged between the arc-shaped flow baffle and the flow channel outlet. Through cooperation of the heart-shaped mixing cavity, the arc-shaped flow baffles and the turbulent flow columns, the particle suspension rate and the mass transfer capacity of the micro-reaction channel are effectively improved, then the reaction efficiency is improved, and the device can be used for achieving continuous preparation of nano-drugs.

The invention provides a process and system for synthesizing a bismaleimide compound, and relates to the technical field of chemical synthesis, and the process comprises the following steps: (1) amidation reaction; (2) ring-closure dehydration reaction; (3) recovering the organic solvent; (4) a toluene thermal washing process; (5) a cooling crystallization process; (6) alkali washing process; (7) washing with hot water; and (8) drying. The process provided by the invention is high in production efficiency, the synthesized bismaleimide product is high in yield and purity, and compared with the prior art, the process is a clean production process in which the solvent can be recycled, no waste liquid is generated, the environment-friendly requirement is met, and the process has great environmental benefits, social benefits and economic benefits.

This utility model relates to the field of pipeline technology, specifically to a compressor venting and noise reduction pipeline and its noise reduction system. The compressor venting and noise reduction pipeline includes: an exhaust pipeline, a bend downstream of the exhaust pipeline, a branch pipeline downstream of the bend, an output pipeline downstream of the branch pipeline, and a silencer downstream of the output pipeline. The silencer includes a spiral flow guiding device. This utility model reduces the velocity of the medium flow by using the bend, branch pipeline, and silencer, consuming part of the kinetic energy of the medium flow, thereby reducing the noise generated by the medium colliding with the pipe wall during discharge and reducing the safety risks to on-site personnel.

The utility model belongs to the technical field of greenhouse film cleaning, and particularly relates to greenhouse film production cleaning equipment which comprises a greenhouse film cleaning sleeve shell, a water guiding and water scraping unit is detachably installed on the inner side surface of the greenhouse film cleaning sleeve shell, and the water guiding and water scraping unit comprises a water spraying flow guiding strip and a water scraping soft plate. A greenhouse film heightening unit is fixedly installed on the inner side surface of the bottom of the greenhouse film cleaning sleeve shell, the greenhouse film heightening unit comprises a heightening supporting plate and an arc-shaped sliding groove, and a water scraping and drying unit is fixedly installed on the right inner side wall face of the greenhouse film cleaning sleeve shell. According to the greenhouse film cleaning device, the supporting flow guide limiting rods are in lap joint on the outer side surface of the greenhouse cloth in a staggered mode in a matched mode to tension the greenhouse cloth, meanwhile, the heightening supporting plates are in lap joint on the surface of the greenhouse cloth to slightly heighten the greenhouse cloth, the sliding force is increased in a matched mode through the arc-shaped sliding grooves, and a water source in the greenhouse film cleaning sleeve shell covers the surface of the greenhouse cloth in a matched mode; when the greenhouse cloth slides, the flowing speed of a water source is utilized.

The invention discloses a waterborne polyurethane floor paint and a preparation process thereof, and relates to the technical field of floor paint. The waterborne polyurethane floor paint is prepared from the following components by weight: 60-75 parts of polyurethane resin, 15-20 parts of hydroxyethyl methacrylate, 3-15 parts of modified graphene oxide, 6-13 parts of hydroxyethyl cellulose, 15-25 parts of curing agent, 1-3 parts of dispersant, 0.5-2 parts of leveling agent, 0.5-1 parts of defoaming agent, 3-8 parts of pigment, and 10-25 parts of deionized water. The floor paint uses modified graphene oxide as a filler, which is mixed with polyurethane resin, hydroxyethyl methacrylate, and a curing agent in water, and is mutually penetrated and entangled to form a hydrogen-bonded or network-crosslinked blended polymer, which has better wear resistance and weather resistance, can protect the surface of a coated ground structure for a long time, and is more environmentally friendly than solvent-based floor paint.

This invention discloses a DLC diamond coating, its preparation, and its application method, relating to the field of diamond-like carbon coating technology. Specifically, it includes the following steps: Step S1, substrate graded cleaning and ion etching pretreatment; Step S2, in-situ synthesis of a Ti-TiC-SiC gradient transition layer; Step S3, construction of a silicon / boron co-doped nanocomposite functional layer. This invention alleviates interfacial stress by constructing a gradient transition layer, utilizes a periodic modulation process to form a soft-hard alternating nanolayered structure, and combines a silicon-boron co-doping strategy; effectively solving the problems of high internal stress, poor adhesion, and easy high-temperature failure in coatings, achieving a balance between high hardness, high toughness, and excellent high-temperature wear resistance.

The invention relates to an SOI-LIGBT (Silicon On Insulator-Lateral Insulated Gate Bipolar Translator) device introducing a deep groove and a self-biased PMOS (P-channel Metal Oxide Semiconductor), and belongs to The device comprises a cathode P + region, a cathode P-well region, a cathode N + region, a drift region, a P-buffer region, an anode N-buffer region, an anode P + region, a main gate oxide layer, a polycrystalline silicon main gate, a deep trench oxide layer, a deep trench oxide layer, a polycrystalline silicon auxiliary gate, a silicon dioxide buried oxide layer and a substrate. According to the device, a self-biased PMOS (P-channel Metal Oxide Semiconductor) is integrated at a cathode, an extraction channel of excess carriers is provided during turn-off, the working frequency of the device in the application process is improved, saturation current is reduced during forward conduction of the device, the short-circuit safe working time of the device is prolonged, and the reliability and the safety of the device are improved; and the PMOS integrated with the cathode does not need to be controlled by an additional circuit, so that the feasibility of the device in the actual application process is improved, and the design difficulty of the driving circuit is reduced.

The invention discloses a treatment system for synergistically removing odor substances and a new pollutant PFAS in water and a treatment method thereof. The treatment system comprises a pre-oxidation unit, an algae removal, adsorption and clarification unit, a membrane separation and concentration unit and a destruction unit which are connected in sequence. The pre-oxidation unit is provided with an oxidation pond with a transverse reciprocating dynamic aeration assembly, so that the ozone mass transfer efficiency is improved. The algae removal, adsorption and clarification unit enables a suspended carbon mud bed to periodically expand and contract through a pulse generator so as to strengthen adsorption. The membrane separation and concentration unit adopts a modified polyether sulfone conical-end filtering membrane and is matched with an online cleaning mechanism, so that PFAS is efficiently intercepted, and secondary pollution is avoided. The destroying unit is used for carrying out synergetic high-temperature incineration on the membrane separation concentrated water and the waste carbon mud, and PFAS is thoroughly decomposed at the temperature higher than or equal to 900 DEG C; by optimizing ozone aeration, pulse adsorption, fluorine-free membrane separation and collaborative incineration, efficient collaborative removal of odor substances and new pollutant PFAS and harmless treatment of waste are achieved, the system integration degree is high, the treatment effect is good, and the risk of secondary pollution is avoided.

This application relates to the field of slitting technology, providing a lower cutter shaft and a lower cutter shaft edge-cutting assembly for an aluminum foil slitting machine. The lower cutter shaft includes a shaft core, an isolation sleeve fitted on the shaft core, and lower blades fitted on the shaft core and located at both ends of the isolation sleeve. It also includes a cutter groove sleeve fitted on the shaft core and located outside the lower blades. The cutter groove sleeve includes an annular portion and a truncated cone portion. The larger diameter end of the truncated cone portion faces the lower blade, and the smaller diameter end of the truncated cone portion is connected to the annular portion. A cutter groove is formed between the lower blade and the annular portion. This invention overcomes the problem in existing aluminum foil slitting machines where waste edges easily get stuck in the cutter groove when the cutting edge is narrow, causing blockage. This invention increases the waste edge passage path, stabilizes the waste edge falling path, and greatly reduces product quality loss costs caused by waste edge entanglement.

The invention discloses a wet dust removal device which comprises a venturi tower, a demister located at the top of the venturi tower and a water tank communicated with the bottom of the venturi tower. A guide air inlet pipe is arranged on the outer side face, close to the top, of the Venturi tower, a spraying device and an exhaust pipe vertically extending downwards are arranged on the top of an inner cavity of the Venturi tower, and an upper pipe opening of the exhaust pipe is communicated with the demister. The dust-containing gas is conveyed in the direction tangent to the inner wall of the venturi tower through the guide gas inlet pipe, so that the dust-containing gas forms a spiral downward airflow in the venturi tower, the spiral flowing path of the dust-containing gas in the venturi tower is prolonged, the dust-containing gas is in full contact with water mist sprayed by the spraying device, and the dust removal efficiency is improved.

The present invention relates to the field of air compressors, and in particular to a portable air compressor, comprising a motor and a chassis arranged at the output end of the motor, a head assembly for compressing air arranged on the chassis, a pressure stabilizing tank arranged on the chassis, the pressure stabilizing tank and the motor arranged on opposite sides of the chassis, and the outer dimensions of the pressure stabilizing tank do not exceed the chassis; the pressure stabilizing tank comprises a side wall and an end cover arranged at the end of the side wall, a cavity is formed between the side wall and the end cover, and the other end of the side wall is sealed and connected to the chassis, so that the cavity becomes an air storage chamber; a mounting portion is arranged on the side wall, and a gas transmission channel connected to the air storage chamber is arranged in the mounting portion, and the input end of the gas transmission channel is connected to the high-pressure end in the head assembly. The present invention is provided with a pressure stabilizing tank at one end of the air compressor, and the outer dimensions of the pressure stabilizing tank do not exceed the chassis, so that it is easy to carry.

The utility model discloses an automatic smoke purifying and collecting device for metal processing and welding, which comprises a machine body, and a decomposition bin, an adsorption bin and a filtering bin which are uniformly arranged in the machine body through partition plates, and further comprises a smoke collecting component, the smoke collecting assembly comprises an L-shaped pipeline installed on the top of the machine body through a connecting base and a smoke sucking cover arranged at the bottom of one end of the L-shaped pipeline through a telescopic corrugated pipe. The filter box is arranged in the filter bin and below the exhaust hood; the adsorption box is arranged in the adsorption bin below the filtering bin; and the catalysis box is arranged in the decomposition bin below the adsorption bin. Through the arrangement of the L-shaped pipeline and the smoke sucking cover in the smoke collecting assembly, smoke generated in the welding process can be effectively sucked in, and diffusion of the smoke in the working environment is avoided. The servo motor drives the L-shaped pipeline to rotate, and flexible adjustment of the smoke suction hood is achieved through meshing of the driving gear and the gear ring.

The utility model discloses an oiling agent layering device, which belongs to oiling agent layering and comprises a box body and a cover plate, the cover plate is in threaded connection with the box body, a water inlet and an overflow port are respectively arranged on the side walls of the opposite sides of the box body, mounting blocks are uniformly embedded on the inner wall of the box body, clamping grooves are arranged on the side walls of the mounting blocks, spoilers are detachably arranged in the clamping grooves, and the spoilers are arranged in the clamping grooves. And a sealing mechanism matched with the clamping groove is arranged on the spoiler, a cavity is formed in the spoiler, fan blades are rotationally installed in the cavity, and suction pipes communicated with the outside are evenly inserted into the side wall of the cavity. The mounting block and the spoiler are arranged; the spoilers are detachably arranged, so that the number of the spoilers in the box body can be adjusted according to the oil content in the separation liquid, the working efficiency can be improved by reducing the number of the spoilers for the separation liquid with less oil content, and the working efficiency can be improved by reducing the number of the spoilers for the separation liquid with more oil content. The layering effect can be ensured by increasing the number of the spoilers and prolonging the flowing path and time of the separation liquid in the box body.

The application discloses a modified layered nanoclay sheet / polyurethane composite coating and a preparation method thereof, and belongs to the technical field of coatings; namely, the modified layered nanoclay sheet and polyurethane are used to prepare the modified layered nanoclay sheet / polyurethane composite coating by adopting a physical crosslinking method; wherein the modified layered nanoclay sheet is prepared by sequentially performing acid activation and surface modification treatment on nanoclay. The application solves the problems of insufficient weather resistance and adhesion and poor storage stability of the existing polyurethane coating, and also reduces the cost. In addition, the modified layered nanoclay sheet / polyurethane composite coating prepared by the application has excellent corrosion resistance and mechanical properties.

The utility model relates to the technical field of pneumatic logistics, and discloses a pneumatic logistics conveying pipeline commutator which comprises a box body, sealing plates are installed at the two ends of the box body, four first conveying pipes are installed on the outer wall of one sealing plate in a penetrating mode, four second conveying pipes are installed on the outer wall of the other sealing plate in a penetrating mode, and a driving unit is installed in the box body. A first bent pipe and a second bent pipe are mounted on the driving unit, the driving unit drives the first bent pipe and the second bent pipe to rotate, and one end of the first bent pipe and one end of the second bent pipe movably communicate with the two adjacent first conveying pipes; the first bent pipe and the second bent pipe which are driven by the driving unit to rotate are installed in the box body, any one of the first conveying pipes can be communicated with any one of the second conveying pipes through cooperation of the first bent pipe and the second bent pipe, and therefore the conveying path of objects is increased, and the conveying efficiency of the objects is improved. And the comprehensiveness, adaptability and flexibility of article conveying are improved.

The utility model relates to the technical field of lead-acid storage battery manufacturing, in particular to a lead pan assembly with a heating function, which comprises a boiler barrel and a heater, the outer wall of the boiler barrel is provided with an interlayer, the heater is fixedly inserted into the interlayer of the outer wall of the boiler barrel, the inner side of the boiler barrel is provided with a plurality of inner pipes, the upper ends of the inner pipes are fixedly inserted into the inner wall of the boiler barrel, and the lower ends of the inner pipes are fixedly inserted into the inner wall of the boiler barrel. A discharging pipe is fixedly installed at the end, located in the interlayer of the boiler barrel, of the inner pipe, the discharging pipe is fixedly inserted into the inner wall of the boiler barrel, a liquid gathering ring is arranged below the boiler barrel, and by arranging the inner pipe, a liquid passing hole, a one-way cover plate and the discharging pipe, when the inner disc moves downwards, lead liquid passes through the liquid passing hole and then ejects the one-way cover plate to move to the position above the inner disc; and then the lead liquid is pushed into the discharging pipes when the inner disc moves upwards, the spirally-distributed discharging pipes make multi-layer annular contact with the heater, the path and time for heating the lead liquid in the discharging pipes by the heater are prolonged, and the temperature difference change is small when the lead liquid is discharged from the lower end of the liquid collecting ring.

This utility model relates to a compressor mounting structure and a vehicle. The compressor mounting structure includes a compressor bracket, a compressor, and a vehicle housing frame. The compressor bracket includes a bracket body, a vibration damping bushing, and a flexible component. The bracket body includes a first sub-section and a second sub-section. The vibration damping bushing is disposed on the first sub-section and is used to connect to the compressor. The second sub-section has a mounting portion and is connected to a vehicle housing crossbar in the vehicle housing frame via a first fastener that mates with the mounting portion. The flexible component is disposed on the second sub-section, protruding from the second sub-section toward the compressor, and a gap is formed between the flexible component and the compressor. Using this compressor mounting structure can optimize the vibration and noise performance of the entire vehicle.

The present invention relates to the technical field of sewing equipment, in particular to a sewing equipment and sewing process for making life jackets, comprising a sewing machine bed and a mobile sewing module arranged inside the sewing machine bed for sewing life jackets, wherein the sewing machine bed is fixedly provided with a T-shaped frame plate, the T-shaped frame plate is fixedly provided with a dye liquid bin box, the number of the dye liquid bin boxes is several groups, and each dye liquid bin box contains dye liquid of different colors, a vibrating pressure rod is arranged above the dye liquid bin box, and a V-shaped fork head is fixedly arranged at the lower end of the vibrating pressure rod; during the process of sewing life jackets, the sewing equipment of the present invention can realize free switching of the colors of sewing wires without stopping the machine or disconnecting the line, thereby adapting to the design of life jackets with more complex styles.

The invention relates to a spraying and filtering treatment device for artificial leather foaming waste gas. The spraying and filtering treatment device comprises a box body, a circulating water tank, a water pump located in the circulating water tank, a spraying device and a water-oil separation partition plate, wherein the spraying device and the water-oil separation partition plate are arranged in the box body; the spraying device is connected with the water pump, washing liquid is added into the circulating water tank, and the spraying device and the water-oil separation partition plate are arranged front and back in parallel in the gas conveying direction. The spraying and filtering treatment device disclosed by the invention can effectively adsorb harmful gas, grease and the like in artificial leather foaming waste gas through optimization design and extension of a gas path, and can effectively purify the waste gas, adsorb polluted gas and realize water-oil separation. By matching with proper detergent components, oil stains can be effectively removed, the oil stains are prevented from gathering and blocking spray holes, the cost is low, most of the reagents are inorganic reagents, the post-treatment is easy, and the maintenance and operation cost is low.

The invention discloses a template induced MOFs synthesis modified polyaniline-based composite filler doped pervaporation membrane as well as a preparation method and application thereof. Polyethylene glycol modified polyaniline is used as an active site for MOF in-situ growth, a hydrophobic organic matter is used for grafting modification, and an MOFs modified polyaniline material is obtained; dispersing PDMS in n-heptane, adding the MOFs modified polyaniline material, a cross-linking agent and a catalyst, stirring, standing, preparing a membrane by using a spin-coating method, and drying to obtain the composite pervaporation membrane. On one hand, the hydrophobicity and the organic compatibility of the filler are effectively improved through the multi-layer flaky polyaniline and final hydrophobic modification, the selectivity of the composite membrane is enhanced, and large-area generation of interface defects is avoided; on the other hand, due to in-situ growth of the MOFs, the problem that the MOFs are easy to agglomerate is effectively solved, and the characteristic that the porous material preferentially permeates alcohol can be exerted.

This utility model discloses an optimized structure for an aluminum alloy heat exchanger, relating to the field of heat exchanger technology. It includes a top plate, a partition plate attached to the bottom side of the top plate, and several sequentially stacked flow channel layers attached to the bottom side of the partition plate. A bottom plate is attached to one side of each flow channel layer. Several flow distribution ports are symmetrically arranged on the flow channel layers. Mutually perpendicular heat exchange mechanisms are provided on both sides of the flow channel layers. Each heat exchange mechanism includes a flow distribution groove connected to the corresponding flow distribution port, one end of which is connected to a mixing groove. Several corrugated heat exchange plates are installed between the two sets of mixing grooves of the heat exchange mechanism. Several flow distribution plates are installed within the heat exchange mechanism. This utility model solves the problems of low utilization rate and low heat exchange efficiency of the flow channel layers caused by the gaps in the diffusion grooves in the prior art. This utility model increases the path of the medium flow by using corrugated heat exchange plates, and the heat exchange plates of adjacent flow channel layers are arranged at intervals, increasing the heat exchange area between the flow channel layers and the medium, thereby improving the heat exchange efficiency.

The utility model belongs to the technical field of valves, and particularly relates to a chemical pipe valve which comprises a valve body, two ends of the valve body are fixedly connected with pipeline connecting seats, the inner walls of the pipeline connecting seats are fixedly connected with annular isolation plates, one ends of the annular isolation plates extend to the outside of the pipeline connecting seats, and the other ends of the annular isolation plates extend to the outside of the pipeline connecting seats. An annular elastic plate is fixedly connected to the outer end of the annular isolation plate, outer mounting bases are symmetrically arranged on the outer side of the pipeline connecting base, and a transparent protection wall is fixedly connected between the two outer mounting bases. The inner side of the connecting position of the pipeline connecting base and the pipeline flange plate can be isolated from chemical liquid, corrosion of the chemical liquid to the connecting position of the pipeline connecting base and the pipeline flange plate is reduced, in addition, the path of the chemical liquid flowing from the interior of the conveying pipeline to the connecting position of the pipeline connecting base and the pipeline flange plate can be increased, and the conveying efficiency is improved. And the difficulty that chemical liquid in the pipeline permeates to the outside through the connecting position of the pipeline connecting base can be improved.

The invention relates to the field of packaging materials, in particular to a plastic packaging material and a preparation method and application thereof. The plastic packaging material comprises the following raw materials in parts by mass: 80-120 parts of polyethylene, 10-20 parts of a modified filler, 15-25 parts of a fiber material, 2-8 parts of a plasticizer, 4-10 parts of a flexibilizer, 1-5 parts of a stabilizer and 1-10 parts of an auxiliary agent. The prepared plastic packaging material not only has excellent temperature resistance and processability, but also can comprehensively improve the water resistance, corrosion resistance, aging resistance, mechanical properties and other properties of the packaging material, can be effectively used as a raw material for preparing woven bags used in high-humidity, high-corrosion, high-temperature and other environments, has very excellent market use prospects, and is worthy of popularization and application. And a new solution thought is provided for the technical problem.