17results 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 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.

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 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 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.

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.

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.

The application belongs to the technical field of functional materials and food safety, and particularly relates to a nano iron / titanium dioxide / cyclodextrin metal organic framework composite as well as a preparation method and application thereof. The gamma-cyclodextrin and alkali liquor are mixed in water to obtain a crystallization mother liquor of the cyclodextrin metal organic framework; then the nano ferroferric oxide and nano titanium dioxide are added into the crystallization mother liquor of the cyclodextrin metal organic framework, and ultrasonic mixing is performed to obtain a nano iron / titanium dioxide / cyclodextrin / potassium hydroxide composite solution; and then filtering and growth culturing are sequentially performed to obtain the nano iron / titanium dioxide / cyclodextrin metal organic framework composite. The nano iron / titanium dioxide / cyclodextrin metal organic framework composite exhibits significantly enhanced crystal growth kinetics characteristics, exhibits excellent renewable performance, and can be recycled through simple centrifugal separation, thereby overcoming the technical defects of the cyclodextrin metal organic framework material in the prior art.

The invention discloses a circulating fixed bed. The circulating fixed bed is used for circularly producing a carbon material and comprises a temperature control body, at least one temperature control section reactor and a controller, the reactor is at least partially located in the temperature control body, and the temperature control body controls the temperature of each temperature control section reactor; the reactor comprises a rotating body and pipes AB, the pipes AB comprise a pipe A and a pipe B, and the pipe A and the pipe B are arranged in a sleeving mode and move relatively; and the controller controls materials to enter the A pipe and the B pipe to react to generate a carbon material, the controller controls the rotating body to rotate to drive the A pipe to rotate relative to the B pipe so as to feed and discharge the material, and the A pipe forms different angles relative to the B pipe in cycles so as to achieve cyclic production of the carbon material. The problems of energy conservation, environmental protection, high yield and homogenization in the prior art can be solved.

This invention discloses a method for recovering low-grade tin polymetallic ore tailings resources based on the synergistic effect of combined reagents, comprising the following steps: (1) grinding the tailings and adjusting the slurry concentration and pH value, then adding lead-antimony flotation reagents to the slurry for flotation to obtain lead-antimony concentrate and first flotation tailings slurry; (2) adding zinc flotation reagents to the first flotation tailings slurry for flotation to obtain zinc concentrate and second flotation tailings slurry; (3) performing roughing shaking table operation on the second flotation tailings slurry to obtain roughing tailings slurry and tailings; (4) adding desulfurization flotation reagents to the roughing tailings slurry for flotation to obtain sulfur concentrate and third flotation tailings slurry; (5) performing cleaning shaking table operation on the third flotation tailings slurry to obtain tin concentrate and tailings. This invention's process does not require significant modifications to existing production processes and equipment, not only achieving significant recovery effects for lead and antimony metals but also greatly saving costs.

This invention proposes a method for preparing TC4 titanium alloy wire rods. The method includes: preparing TC4 titanium alloy ingots using vacuum arc melting, and performing multi-stage forging on the TC4 titanium alloy ingots to obtain fixed-length precision forged billets; performing multi-stage rolling on the fixed-length precision forged billets during cooling, ensuring that the initial rolling deformation is greater than or equal to 60% and the final rolling deformation is greater than or equal to 10%, to obtain TC4 titanium alloy wire rods; performing online quenching on the TC4 titanium alloy wire rods, ensuring a cooling rate greater than or equal to 50℃ / s until reaching room temperature; and annealing the TC4 titanium alloy wire rods at room temperature, followed by natural cooling to obtain the finished TC4 titanium alloy wire rods. This invention, through staged temperature-controlled rolling, online quenching, and annealing, can significantly improve material properties without adding additional alloying elements, while simultaneously improving preparation efficiency and recyclability and reducing production costs.

The application discloses a double-sided cooling type power semiconductor packaging structure and belongs to the technical field of power semiconductor device packaging. The packaging structure comprises three layers of water cooling parts which are sequentially stacked, detachable positioning material layers are connected between two adjacent layers of the water cooling parts, each layer of the water cooling parts is provided with an inlet, an outlet and a cooling medium flow channel, the cooling medium flow channel is in communication with the inlet and the outlet, a die assembly is fixedly arranged between two adjacent layers of the water cooling parts by the positioning material layers, and the die assembly forms surface contact with the two adjacent layers of the water cooling parts. The double-sided contact cooling form enlarges the heat dissipation area, the heat conduction performance is improved by means of a heat-conducting insulating coating, and the packaging structure is detachable, so that the power module packaging structure has the advantages of high-efficiency heat dissipation, reliable insulation and high recyclability. The packaging structure helps to promote the development of power electronic devices in the direction of high power density, long service life and sustainability.

This invention provides a bifunctional photo-enzyme composite catalyst, its preparation method, and its application, belonging to the fields of nanocomposite material preparation and clean energy technology. In this invention, the bifunctional photo-enzyme composite catalyst can utilize photogenerated holes to oxidize NADH to NAD under visible light. + NAD + Furthermore, it promotes the catalytic oxidation of ethanol by ethanol dehydrogenase, while photogenerated electrons converge on Pt and split water to produce hydrogen. The bifunctional photo-enzyme composite catalyst does not require the addition of any sacrificial agent, avoiding the waste of photogenerated holes and making full use of photogenerated charge carriers. The raw materials for the preparation of the bifunctional photo-enzyme composite catalyst are inexpensive and readily available, and the preparation process is simple and feasible, which has good practical value.