55results about How to "Achieve recyclability" patented technology

This application relates to the field of polymer materials technology, providing a PET elastomer, composite material, dynamic covalent network polymer, and its preparation method and application. The elastomer is prepared by in-situ self-assembly of crown ether-primary amide dual-functionalized PET through melt blending. Its molecular network integrates a quasi-rotaxane supramolecular crosslinking network. This structure is formed by the host-guest interaction between the crown ether and the primary amide, and can act as a sliding crosslinking point to dissipate energy through the sliding of cyclic components. This application employs a two-step end-capping-in-situ self-assembly process to overcome the technical obstacles of low PET chain-end activity and poor compatibility between polyrotaxane and PET, achieving molecular-level dispersion of quasi-rotaxane in the PET matrix. This fully utilizes the molecular pulley effect to achieve breakthrough toughening of the elastomer. Simultaneously, it combines rigid nanofillers modified with aminosilane coupling agents to form a soft-hard synergistic network, enabling the PET composite material to maintain high toughness while simultaneously improving strength, modulus, and thermal properties.

The utility model discloses a recoverable material battery top cover plate structure, which belongs to the technical field of new energy batteries, and is characterized by comprising a top cover plate main body made of a single recoverable metal material, and a positive pole column and a negative pole column are respectively arranged on two sides in the top cover plate main body in a penetrating manner. A pressure relief channel is formed in the middle of the interior of the top cover plate body, an anti-explosion film is arranged in the pressure relief channel, a liquid injection hole is formed in the right side of the interior of the top cover plate body, and a sealing structure is arranged in the liquid injection hole. The sealing structure comprises a fixing screw, the fixing screw is in threaded connection to the top of the interior of the liquid injection hole, a connecting column integrated with the fixing screw is arranged at the bottom of the fixing screw, a rubber plug is rotationally connected to the bottom of the surface of the connecting column, and the surface of the rubber plug is in close contact with the inner wall of the liquid injection hole, so that the effect is achieved.

The invention relates to preparation of graphene-loaded nano zero-valent iron and application of the graphene-loaded nano zero-valent iron in chromium-containing wastewater treatment. The preparation method comprises the following steps: preparing 60mL of a KBH4 solution with the concentration of 0.5 mol / L as a solution A and 60mL of a FeSO4. 7H2O solution with the concentration of 0.1 mol / L as a solution B, adding 0.25 g of a single-layer graphene oxide dispersion liquid into the solution B, stirring for 30 minutes, recording as a solution C, slowly dripping the solution A into the solution C, performing suction filtration separation on powder C, and drying to obtain nZVI-coated GO. The graphene is loaded with nZVI to adsorb chromium in chromium-containing wastewater, and nZVI-GO-Cr formed after wastewater treatment can be used as an auxiliary tanning agent for leather tanning or retanning sections and has good recyclability.

The invention relates to a rotor. A rotor of an electric motor includes: a rotor core having a hole extending in an axial direction of the rotor; a permanent magnet disposed in the hole; a spacer member disposed in the hole and adjacent to the permanent magnet on an outer side of the permanent magnet in a radial direction of the rotor; a first adhesive layer configured to hold the permanent magnet in the hole and disposed between an inner surface of the hole and at least a portion of a side surface of the permanent magnet facing the inner surface; and a second adhesive layer configured to hold the spacer member in the hole and disposed between the inner surface and at least a portion of a side surface of the spacer member facing the inner surface. A cross-section of the hole perpendicular to the axial direction has a slot shape extending in a direction intersecting a circumferential direction of the rotor.

The invention provides an aluminum-based composite material manufacturing device and method based on wire and powder composite laser additive materials. The device comprises a laser system, a powder laying system, a wire feeding system, a movement mechanism and a control system. The powder spreading system spreads reinforced powder layer by layer, the wire feeding system feeds aluminum matrix wires, and the movement mechanism synchronously drives the laser system and the wire feeding system to move. The control system regulates and controls the powder laying thickness according to the descending amount, and layer-by-layer independent control over the supply amount of the reinforcing material is achieved; controlling the laser system to fuse at the first power to form an initial deposition layer on the surface of the powder layer; re-melting at second power to realize metallurgical bonding with the lower layer, and rolling the reinforcing material into a molten pool for mixing; and the descending amount and the powder falling amount of the next layer are calculated according to on-line monitoring data, and closed-loop circulation forming is formed. The problems that the volume fraction is not controlled, the reinforcing material is overheated, the material utilization rate is low and variable component forming is difficult are solved, and high-precision, high-efficiency and low-cost integrated forming is achieved.

The invention relates to the technical field of propane catalytic oxidation, in particular to a silicon-based heterojunction material and a preparation method and application thereof based on mechanical force, the preparation method comprises the following steps: mixing copper oxide, silicon powder, titanium dioxide and water, grinding, and freeze-drying to obtain ground powder; and calcining the ground powder in a protective atmosphere to obtain the silicon-based heterojunction material. According to the invention, the silicon-mediated CuO-TiO2 nano heterojunction is constructed through a mechanical force assembly strategy. And nanocrystallization, uniform mixing and interface engineering of CuO and TiO2 are synchronously realized under the action of liquid phase shearing. In the process, the silicon powder not only serves as a doping agent, but also serves as a solid reducing agent, and selectively reduces Cu < 2 + > on the surface into Cu < + > under the driving of shearing force, so that an active structure with a Cu < + > / Cu < 2 + > redox cycle is constructed in situ, lattice distortion is induced, a large number of oxygen vacancies are generated, and the migration and activation capacity of oxygen is improved.

The invention discloses a light-emitting probe based on a europium-based metal-organic framework and a preparation method and application thereof, and belongs to the technical field of fluorescent sensing materials and food safety detection.The light-emitting probe is a europium-based metal-organic framework material, the chemical formula of the light-emitting probe is Eu (phen) (5-hipa) NO3 <->, phen is 1, 10-phenanthroline ligand, 5-hipa is 5-hydroxyisophthalic acid ligand, and the molecular weight of the Eu (phen) (5-hipa) NO3 <-> is larger than that of Eu (phen) (5-hipa) NO3 <->. The light-emitting probe takes a binuclear Eu cluster as a metal center. According to the luminous probe based on the europium-based metal-organic framework, the synthesized europium-based metal-organic framework material can be used as a bifunctional fluorescent probe, and specific recognition and quantitative detection of carbaryl and enrofloxacin are realized in an aqueous solution; the method has the remarkable effects of high sensitivity, strong anti-interference capability, recyclability and simplicity, convenience and rapidness in operation.

Provided is a gas barrier laminate that is simple to produce and has excellent water vapor barrier properties and gas barrier properties. Also provided are a gas barrier laminate further excellent in recyclability and heat sealing properties, and a method for producing it. The gas barrier laminate has a water vapor barrier layer and a gas barrier layer in that order on at least one surface of a paper support, wherein the water vapor barrier layer contains a layered inorganic compound, a cationic resin and an anionic binder, the aspect ratio of the layered inorganic compound is 50 or more, the thickness of the layered inorganic compound is 200 nm or less, the content of the layered inorganic compound is 0.1 to 800 parts by mass relative to 100 parts by mass of the anionic binder, and the gas barrier layer contains a water-soluble polymer. The invention is also a method for producing the gas barrier material by coating.

The utility model discloses a wax liquid cleaning and recycling device which comprises a cleaning container mechanism, and a material distributing mechanism is installed in the cleaning container mechanism. The wax liquid is distributed into the cleaning container through the distribution mechanism to be cleaned, and the wax liquid with the density smaller than that of water floats above the water layer in the cleaning process; a wax liquid discharging pipe is installed on the cleaning container mechanism, the feeding end of the wax liquid discharging pipe is located at the upper end in the cleaning container mechanism, and the discharging end of the wax liquid discharging pipe is located on the outer side of the cleaning container mechanism. The material distributing mechanism comprises a feeding structure, the discharging end of the feeding structure communicates with a material distributing structure, and the material distributing structure comprises a material distributing bin; a plurality of material distribution through holes are formed in the material distribution bin; and the material distribution outlet pipe is communicated with the bottom of the material distribution bin. According to the device, the technical defect that waste wax generated during wax mold demolding cannot be conveniently recycled is effectively overcome, impurities in the wax are fully removed in a washing mode, wax liquid can be recycled, and the device is economical, environmentally friendly and convenient and easy to operate.

This invention discloses an integrated chip removal guide device based on a grinding worktable, including a machine bed. One side of the machine bed is a chip removal position, and a chip removal section is provided on one side of the chip removal position. The outer side of the chip removal section has a separation section, and a recovery section is provided on the side of the separation section away from the chips. The chip removal section includes: a body, located at the bottom of the machine bed to support the machine bed, and a chip removal groove formed on the inner side of the body for contacting the chip removal position; and a conveyor belt, located inside the body and extending through the body into the chip removal groove. A motor assembly for driving the conveyor belt is provided on the inner side of the conveyor belt. This application, by providing a chip removal section that facilitates chip recovery during use, allows chips to be collected from the edge of the machine bed during use, reducing human intervention and minimizing chip residue during recovery.

The application relates to the technical field of acrylic plate production, and discloses a material uniformizing device for acrylic plate production, which comprises a base plate, two collecting assemblies for collecting excess acrylic raw materials are arranged above the base plate, two extruding wheels for extruding and forming into acrylic sheets are arranged between the two collecting assemblies, a raw material heating box for heating the raw materials into plastic fluid is arranged above the two extruding wheels; one side of each of the two extruding wheels close to the fixed plate I is rotationally connected to the fixed plate I, and the other side of each of the two extruding wheels away from the fixed plate I is rotationally connected to the fixed frame, so that the positions of the two extruding wheels correspond to each other and remain unchanged, the extruding force is balanced, the acrylic plate is more uniformly formed, the thickness of the uniform acrylic plate can be reduced, the bending stiffness and hardness of the acrylic plate are increased, the strength and durability of the acrylic plate are improved, the structure weight and transportation cost of the uniform and light acrylic plate are reduced, and the service life of the acrylic plate is increased.

The present application relates to the technical field of super-hydrophilic / super-oleophilic materials, and particularly to a preparation method of a super-hydrophilic photo-thermal composite material with the ability to absorb heavy oil underwater, which comprises the following steps: first, natural oligomeric amino polysaccharide is used to synergistically aminate raw cotton with amino silane coupling agent; then, based on the synergistic amination system of the raw cotton, polymeric active units and nano-scale heat-conducting particles are introduced into the raw cotton; and finally, the mixed liquid phase is cured by the hyperbranched polymer forming method to complete the construction of the super-hydrophilic photo-thermal composite material with the ability to absorb heavy oil underwater by the one-pot method. The raw materials of the present application are green and environmentally friendly, and the experimental steps are simple, safe and convenient. The prepared product has excellent super-hydrophilicity and super-oleophilicity in an air atmosphere, with a contact angle of 0°. In an underwater atmosphere, the product has super-hydrophilicity and excellent oil absorption performance, and still has stable super-hydrophilicity and oil absorption capacity after cyclic utilization in different atmospheres. In addition, the product has good photo-thermal performance and good absorption and separation capacity for viscous oil phases, which lays a foundation for wider application.

This invention relates to the field of water treatment technology, and particularly to a system and method for removing small-molecule organic matter based on field energy granulation and agglomeration. The system includes an initial mixing section and an electrostatic field enhancement section and a post-mixing section connected sequentially to the initial mixing section. Through the effects of initial mixing and electrostatic field enhancement, medium-sized polymers are first formed, which combine with small-molecule organic matter to form complexes, encapsulating the small-molecule polymers. Then, during post-mixing, coagulants are continuously added and adhere to the initial complexes, forming a coral reef-like surface with a higher zeta potential and a larger specific surface area. Each newly formed surface layer combines with pollutants and covers the previous layer, thereby encapsulating more small-molecule organic matter into the flocs and improving the removal rate of small-molecule organic matter. This solves the problem of low removal rates of small-molecule organic matter in existing coagulation processes, which cannot meet the requirements for wastewater recycling.

The invention discloses a pure physical cross-linked dual-temperature-sensitive hydrogel and a preparation method of the pure physical cross-linked dual-temperature-sensitive hydrogel. The hydrogel is composed of N-isopropylacrylamide, hydroxyl-containing cellulose, sodium pyrophosphate (Na4P2O7) and an initiator, a chemical cross-linking agent is not needed, and a dual physical cross-linked network is formed through combination of photo-initiation or thermal-initiation polymerization and heating induced phase transformation. The obtained hydrogel shows two obvious temperature response transitions: poly (N-isopropylacrylamide) phase transition in a low-temperature region (about 15-35 DEG C) and thermal association of hydroxyl-containing cellulose in a high-temperature region (about 45-65 DEG C). The pyrophosphate ions enhance the network stability and mechanical strength of the gel through ion-dipole interaction. The hydrogel has excellent mechanical properties and sensitive dual-threshold thermal response characteristics, and can be used in the fields of flexible temperature sensors, bionic skins, temperature control switches, multi-temperature-zone environment monitoring and the like.

The invention relates to a cosmetic packaging device (10) comprising a body (12) having a neck (20) and a dispensing tip (14). The dispensing tip (14) is inserted into the neck (20) so that the packaging device (10) has a clamping region in which the dispensing tip (14) exerts a radial force on the neck (20). The distance between the clamping region and the distal end (24) of the neck (20) is greater than or equal to a quarter of the internal diameter (D) of the neck (20) in the clamping region, the dispensing tip (14) not exerting a radial force on the neck (20) between the clamping region and the distal end (24) or on the distal end (24). The invention also relates to an associated assembly method.

The application belongs to the technical field of photothermal interface evaporation, and particularly relates to a core-shell structure solar evaporator and a preparation method and application thereof. The core-shell structure solar evaporator comprises a hydrophilic inner core and a hydrophobic shell; the hydrophilic inner core and the hydrophobic shell both use Co-doped MoS2 as a photothermal conversion material. The unique three-dimensional macrostructure of the core-shell structure solar evaporator not only enlarges the evaporation area, but also enhances the light absorption capacity through multiple reflections of incident light. In addition, because the hydrophobic layer is the shell, the problem of surface salt deposition of the existing solar evaporator during seawater desalination can be solved, the core-shell structure solar evaporator has excellent salt resistance, and can stably perform seawater desalination for a long time.

The present application relates to the technical field of new material preparation, in particular to a recyclable aerogel phase change cold storage material with real-time temperature monitoring function and a preparation method and application thereof.The recyclable cold storage phase change composite material comprises a polymer aerogel and a phase change material loaded in the polymer aerogel; the polymer in the polymer aerogel contains a structural unit of a maleic anhydride group and a structural unit of a maleimide group, the recyclable cold storage phase change composite material can be recycled, has a smaller leakage amount, and can maintain a low temperature for a long time; the recyclable cold storage phase change material with real-time temperature monitoring function has a layer structure, comprising an inner layer formed by the recyclable cold storage phase change composite material and an outer layer formed by a second polymer aerogel, and can simultaneously realize mass temperature monitoring and recyclable performance.

The invention discloses a preparation method of a recyclable phenolphthalein polyaryletherketone composite material, which comprises the following steps: selecting 65% of phenolphthalein polyaryletherketone resin (PEK-C) as a base material; 15% of carbon fibers, 10% of glass fibers, 8% of ceramic particles and 2% of metal powder are selected as reinforcing materials; a matrix material and a reinforcing material are uniformly mixed, it is ensured that the matrix material can completely permeate into the reinforcing material to form a stable composite material, and when the matrix material and the reinforcing material are uniformly mixed, a recycling agent is selected and added into the mixed composite material, so that the viscosity of resin can be effectively reduced in the recycling process of the composite material; the resin is promoted to be degraded into small molecular units so as to promote the degradation of the resin. The invention relates to the technical field of polymer composite material processing, and the composite material can be conveniently recycled while ensuring excellent physical and chemical properties, so that environmental pollution is reduced, and a new way is provided for realizing sustainable utilization of resources.

The invention provides a general polymer modified sponge hydrophobic material and a preparation method thereof, the general polymer modified sponge hydrophobic material comprises a sponge and a general polymer anchored on the sponge, based on the total weight of the hydrophobic material, the loading capacity of the general polymer is 1-15 wt%, and the water contact angle of the hydrophobic material is 120-150 degrees. According to the present invention, by using the strong hydrophobic and oleophylic properties of the general polymer material, the general polymer material is anchored on the skeleton of the melamine sponge or the polyurethane sponge through repeated impregnation, such that the obtained hydrophobic material can achieve rapid and efficient oil-water separation, and has the oil substance adsorption capacity of 80-180 g / g, which is up to 167 times of the self weight;

The application discloses a nickel-rhenium bimetallic catalyst and a preparation method and application thereof, the catalyst takes a rod-shaped cerium dioxide as a carrier, and uniformly loads metal nickel and metal rhenium on the carrier, the metal nickel and the metal rhenium at least exist in the form of a nickel-rhenium alloy, during preparation, a cerium source and an alkali metal hydroxide are dispersed in water to obtain a mixed solution, and the mixed solution is reacted under a heating condition; after the reaction is finished, separation is carried out, and the product is calcined to obtain the rod-shaped cerium dioxide; a nickel source and a rhenium source are respectively dissolved in water, the rod-shaped cerium dioxide is added, a reducing agent is added for reduction, the reaction is finished, and a catalyst precursor is obtained through separation; the catalyst precursor is subjected to first calcination in an oxygen-containing environment, and then subjected to second calcination in a hydrogen atmosphere; the nickel-rhenium bimetallic catalyst has low cost and high catalytic activity, can catalyze four-hydrofurfuryl alcohol to prepare 1,5-pentanediol through one-step hydrogenation ring-opening, and has long service life and stability, and can be recycled and reused.

The utility model discloses an adjustable stiff steel column head protection device, including protection fixed part, web protection sliding part and flange protection sliding part, protection fixed part is divided into flange portion, web portion, and the flange portion is used for being sleeved on stiff steel column head, and the web portion covers on stiff steel column head web, web protection sliding part is identical with stiff steel column web cross section shape, is used for being sleeved on the web portion of protection fixed part, and the flange protection sliding part is sleeved in the flange portion both ends of protection fixed part, the utility model discloses can avoid column head pollution, guarantees the installation welding quality, and can satisfy the need of different size steel column.

An aerosol dispensing device is arranged on an aerosol container (100) having a valve stem (101). The device comprises an actuator (3) adapted to manipulate the valve stem (101). A spray nozzle insert (10) is positioned in the actuator (3). The spray nozzle insert comprises an end wall (11) having a spray orifice (12) therethrough. A cylindrical wall (13) is connected to an inner side (11B) of the end wall (11), the cylindrical wall being arranged concentrically with the spray orifice (12). The spray nozzle insert (10) has at least two snap fingers (14) located at a radial distance from an outer side of the cylindrical wall (13). The actuator (3) has at least two guide ribs (30) configured to guide each snap finger (14) when the spray nozzle insert (10) is positioned in the actuator (3). The snap fingers (14) have snap members (15) that snap behind inward ends (31) of the guide ribs (30).

This invention relates to a food packaging material and a method for manufacturing the food packaging material. The food packaging material of this invention comprises a paper substrate having a first side and a second side, the second side being opposite to the first side, wherein the paper substrate is coated with a coating on at least the first side or the second side, the coating comprising wax and a copolymer selected from styrene-butadiene copolymers and / or styrene-acrylic copolymers.

The utility model provides a kind of gravity type sustainable ecological retaining wall design structure belongs to geotechnical engineering technical field, comprising: waterproof unit, wall, support unit, spray layer and irrigation unit;The waterproof unit, support unit, irrigation unit and spray layer are all set on the wall;The waterproof unit is used to prevent the wall from seepage;The support unit is used to ensure the stability of the wall;The spray layer is used to enhance soil stability;The irrigation unit is used to ensure the moisture required for spray layer vegetation growth.The utility model adopts above-mentioned a kind of gravity type sustainable ecological retaining wall design structure, the structure not only has retaining function, but also can realize automatic collection of rainwater, irrigation, while increasing greening in wall body, enhance ecological benefits.

The present invention relates to a current collector for a bipolar electrode and a recycling method of a current collector for a bipolar electrode. The current collector for a bipolar electrode includes a first metal foil disposed on one face, a second metal foil different in kind from the first metal foil and disposed on the other face, and a conductive adhesive layer interposed between the first metal foil and the second metal foil so as to bind both the first metal foil and the second metal foil together, wherein an outer edge of the conductive adhesive layer is a dehydration adhesive layer that undergoes a dehydration reaction when heated to 100°C or higher.

The invention discloses a preparation method of polyalkylene glycol mono (methyl) acrylate, which comprises the following steps: with trifluoromethanesulfonate or supported trifluoromethanesulfonate as a catalyst, reacting hydroxyalkyl (methyl) acrylate with alkylene oxide in the presence of the catalyst and a polymerization inhibitor to obtain a polyalkylene glycol mono (methyl) acrylate crude product; and carrying out reduced pressure distillation on the polyalkylene glycol mono (methyl) acrylate crude product to separate out unreacted alkylene oxide so as to obtain a polyalkylene glycol mono (methyl) acrylate finished product. According to the invention, a solvent-free one-pot method (methyl) hydroxyalkyl acrylate and alkylene oxide ring-opening addition is constructed to prepare a polyalkylene glycol mono (methyl) acrylate system, and a solvent removal process after reaction is reduced. The trifluoromethanesulfonate has strong Lewis acidity and mild acidity, can catalyze rapid reaction, can ensure stable existence of carbon-carbon double bonds, and reduces generation of side reaction of carbon-carbon double bond polymerization.

This invention discloses a nanocatalyst for the synthesis of dimethyl carbonate, its preparation method, and its application, belonging to the field of catalyst technology. The invention involves a Friedel-Crafts reaction of biphenyl dichlorobenzyl with an alkylating agent to obtain a highly cross-linked nanoparticle support; a nucleophilic substitution reaction of this support with imidazole chloride to obtain an imidazole-modified highly cross-linked nanoparticle support; and an ion exchange reaction in an alkaline solution to obtain a highly cross-linked nanoparticle catalyst. The preparation method of this invention uses mild reaction conditions, requiring no high pressure or high temperature, making it suitable for industrial production. The obtained nanocatalyst does not contain toxic components; it can catalyze the synthesis of dimethyl carbonate under mild conditions, achieving a dimethyl carbonate yield of 96% and a selectivity of 99%; it exhibits excellent cycling performance, achieving a yield of 93% and a selectivity of 99% after 10 cycles, thus solving the problems of existing catalysts containing toxic components, poor catalyst cycling performance, and the need for high temperature and high pressure reactions.

This invention relates to a method for preparing and applying a superhydrophobic expanded graphite coating. The invention addresses the problems of complex preparation processes, high costs, or insufficient mechanical stability in existing technologies. The method uses expanded graphite as the main raw material and adds epoxy resin to prepare a superhydrophobic expanded graphite coating with photothermal properties. The coating is uniformly sprayed onto the surface of circular nickel foam using a spraying technique, resulting in a multifunctional superhydrophobic expanded graphite photothermal evaporator with sustainability, corrosion resistance, recyclability, self-cleaning capabilities, and water purification abilities. This invention belongs to the field of superhydrophobic coating preparation technology.