202 results about "Synthetic materials" patented technology

The invention discloses composite hydrogel bio-ink with a function of space-time delivery of double growth factors as well as a preparation method and application of the composite hydrogel bio-ink, and belongs to the technical field of biomedical materials and tissue engineering. According to the preparation method, imidazolyl-modified methacrylated gelatin and double-bonded PF127 are compounded, and meanwhile, free vascular endothelial growth factors and connective tissue growth factor-loaded PLGA microspheres are entrapped in a system, so that the bio-ink with excellent printability, high adhesion, swelling resistance and space-time delivery function is formed; the bio-ink physically has the advantages of high printing fidelity, low swelling property, high mechanical strength and strong tissue adhesion of a synthetic material; in biology, the system can be used as an intelligent carrier to realize programmed space-time delivery of various growth factors, so that complex cell biological behaviors are accurately arranged, and real regeneration of functional tissues is guided.

The offshore photovoltaic foundation anti-sinking device comprises an anti-sinking part and a conical rubber gasket, the anti-sinking part is in a plate shape, a penetrating reserved connector is formed in the middle of the upper surface of the anti-sinking part, the conical rubber gasket wraps the surface of a foundation pile in a surrounding mode, and the foundation pile is inserted into the reserved connector and fixed through the conical rubber gasket. The anti-sinking part has large overall rigidity and area, and the anti-sinking characteristic is obvious. The anti-sinking part adopts a land prefabricated finished product and is directly hoisted and installed after field positioning, the offshore operation difficulty is effectively reduced, the offshore operation time is saved, the overall rigidity and area of the anti-sinking part are large, the capacity of the photovoltaic foundation for resisting differential settlement can be effectively improved, meanwhile, the anti-sinking part is made of conventional reinforced concrete or rubber synthetic materials, and the cost is low. The cost is low.

An interchangeable stock panel insert system for attaching accessories to a firearm such as a long gun comprises an elongated stock formed of synthetic material including a forestock configured to support a receiver of the firearm. The forestock includes an internal longitudinal cavity forming an elongated longitudinal aperture at the bottom which provides injection molding benefits described herein to yield more uniform stock wall thicknesses. The forestock includes a singular mounting interface defined at the longitudinal aperture configured to detachably couple a plurality of different stock panel inserts thereto to enclose the bottom aperture and form part of the completed forestock. The panel inserts share a common mounting configuration compatible with the singular mounting interface of the forestock so as to be interchangeably mountable to the forestock. At least some of the stock panel inserts include an accessory rail for mounting various types of firearm accessories thereto.

The present application relates to a kind of composite rotator cuff patch and its preparation method and application, belong to the field of biomaterials technology.The structure layer and biological layer are all biological medical materials, do not need to introduce crosslinking agent, and by the structure layer and biological layer alternate composite design, avoid the problem that traditional synthetic material is not degradable or short degradation period, with controllable degradation period, improve the tear resistance and mechanical support of patch, effectively reduce the risk of inflammatory response, improve the biocompatibility and safety of patch, finally realize the applicability and effect of improving composite rotator cuff patch in clinical application.

The invention relates to a prosthetic heart valve (100) for an endoprosthesis (1) used in the treatment of a stenotic cardiac valve and / or a cardiac valve insufficiency. The prosthetic heart valve (100) comprises of a plurality of leaflets (102), which consist of a natural and / or synthetic material and have a first opened position for opening the heart chamber and a second closed position for closing the heart chamber, the leaflets (102) being able to switch between their first and second position in response to the blood flow through the heart. In addition, the prosthetic heart valve (100) comprises a leaflet support portion (103), consisting of biological and / or synthetic material for mounting of the prosthetic heart valve (100) to a stent (10), and a bendable transition area (104) which forms a junction between the leaflets (102) and the leaflet support portion (103), the transition area (104) progressing essentially in a U-shaped manner similar to a cusp shape of a natural aortic or pulmonary heart valve for reducing tissue stresses during opening and closing motion of the leaflets (102). The invention further relates to an endoprosthesis (1) comprising a prosthetic heart valve (100) and a stent (10).

The utility model relates to the technical field of chemical synthetic material processing, and discloses an efficient reaction kettle for chemical synthetic material processing, which comprises a workbench, the lower surface of the workbench is fixedly connected with a sliding column, the outer wall of the sliding column is slidably connected with a supporting column, the outer wall of the supporting column is fixedly connected with a first bottom plate, and the first bottom plate is fixedly connected with a second bottom plate. A motor is fixedly connected to the upper surface of the first bottom plate, a two-way threaded rod is fixedly connected to the output end of the motor, a check block is rotationally connected to the outer wall of the two-way threaded rod, a supporting block is rotationally connected to the outer wall of the two-way threaded rod, and a supporting assembly is arranged on the upper surface of the workbench and used for supporting a hydraulic cylinder. According to the working table, the second rotating column drives the connecting block to move up and down, so that the working table is adjusted to a proper height, operators with different heights can find a proper working height, and the effects of reducing the working intensity and improving the working efficiency are achieved.

The application discloses an oral nano-vaccine and a preparation method and application thereof, and relates to the technical field of immunology, and specifically discloses an oral nano-vaccine which comprises a nano-particle wrapped by a biomimetic bacterial membrane vesicle and an outer layer; the nano-particle comprises an antigen and a biodegradable polymer material; the biomimetic bacterial membrane vesicle comprises an ionizable flagellar lipoprotein, an immune adjuvant, a phospholipid, a sterol lipid and a polyethylene glycol lipid; and the outer layer is a pH-responsive polymer. The oral nano-vaccine provided by the application combines the immune activation advantages of natural bacterial membrane vesicles and the precise regulation characteristics of synthetic materials, significantly improves the transmembrane penetration capacity of the antigen in the intestinal epithelium and the overall activation effect of the mucosal immune system. The oral nano-vaccine provided by the application can protect the antigen and the immune adjuvant from degradation and realize precise release in the intestinal microenvironment; and the oral nano-vaccine significantly improves the bioavailability and safety of an oral tumor vaccine, and lays a key technical foundation for clinical transformation and large-scale production of the oral tumor vaccine.

A patch containing lotus root fibers is formed by covering collagen layers on the two sides of a lotus root fiber hydrogel synthetic material, the lotus root fiber hydrogel synthetic material is obtained by fusing 20-40 parts by mass of lotus root fibers (3) and 60-80 parts by mass of a hydrogel substrate, and the prepared patch has excellent mechanical properties, and can be used as a patch for repairing the skin. The problem that the abdominal pressure of a patient is excessively increased due to cough, defecation and the like after an operation is effectively solved, displacement and tearing are prevented, and the repair success rate is increased.

The application belongs to the technical field of chemical synthetic materials, and relates to an alkali metal ion intercalated transition metal chalcogenide compound as well as a preparation method and application thereof. x M m X n wherein A is one or more of alkali metal elements, and 0 < x < 1; M is one or more of transition metal elements, and m is 1-2; X is one or more of chalcogen elements, and n is 1-3; and the alkali metal ion intercalated transition metal chalcogenide compound is obtained by mixing and reacting an intercalation host transition metal chalcogenide compound, an intercalation guest alkali metal element-containing compound and an auxiliary metal intercalation agent.

The invention relates to a microbial single-cell gelation encapsulation method based on aloe gel and application, the method realizes single-cell gelation encapsulation through electrostatic interaction of sterile aloe gel and intestinal anaerobic bacteria (such as Agathobacter rectasis), and the method comprises the specific steps of aloe gel preparation, bacterial suspension culture and oscillation mixing to form a stable structure. The preparation method has the advantages that the acid resistance and biocompatibility of the natural aloe gel are utilized to replace a traditional synthetic material, so that the gastrointestinal tolerance of thalli is improved; meanwhile, the synergistic effect of aloe active ingredients (such as aloe-emodin) and intestinal bacterial metabolites (butyric acid) is combined, so that the anti-inflammatory and intestinal steady-state regulation and control effects are enhanced. Experiments show that the survival rate of the encapsulated bacteria in simulated gastric juice within 4 hours is larger than or equal to 90%, the intestinal colonization rate is effectively increased compared with naked bacteria, the inflammatory factor level of a colitis model mouse can be remarkably reduced, and a safe and efficient new strategy is provided for micro-ecological treatment of inflammatory bowel diseases.

The utility model discloses a water soluble paraffin removal ball, which relates to the technical field of paraffin removal balls and comprises a paraffin removal ball body, a cleaning agent storage component is mounted in the paraffin removal ball body and comprises a storage tank, a through hole, a chemical cleaning agent and a water soluble plastic film, the paraffin removal ball comprises a paraffin removal ball body, a storage groove is formed in the paraffin removal ball body, the storage groove is filled with a chemical cleaning agent, a plurality of through holes are formed in the outer side of the paraffin removal ball body and penetrate through the inner wall of the storage groove, and a water-soluble plastic film is installed on the inner side of one end of each through hole. The synthetic material of the paraffin removal ball body is ethylene vinyl acetate, and the paraffin removal ball body can be dissolved in a crude oil environment, so that the paraffin removal ball body can be automatically dissolved in an oil pipe after being used for 24 hours, the oil pipe is prevented from being blocked, the paraffin removal ball does not need to be found, and the paraffin removal ball is more convenient to use.

The present application relates to the field of chemical synthetic materials and catalysis, and particularly relates to a metal-amorphous structure chalcogenide core-shell nanocrystal and a preparation method and application thereof.The preparation method comprises the following steps: (1) synthesizing Au nanorods through a seed growth method; (2) coating silver on the surface of the Au, and epitaxially growing a silver shell layer nanocrystal; and (3) sulfidizing the silver shell layer nanocrystal, and performing hydrothermal cation exchange to obtain a core-shell structure nanocrystal.In the metal-amorphous structure chalcogenide core-shell nanocrystal, the amorphous surface to a certain extent is conducive to adsorbing reaction substrates, and promotes the progress of the photocatalytic carbon dioxide reduction reaction.The metal-amorphous structure chalcogenide core-shell nanocrystal has excellent gas-solid phase photocatalytic carbon dioxide reduction performance, and can achieve good effects without a photosensitizer and a sacrificial agent.

A material synthesis apparatus includes: at least one device configured to synthesize a material; a user interface configured to obtain information on a target product; and a processor, wherein the processor is configured to: determine synthesis conditions for preparing the target product using a pretrained synthesis prediction model; calculate a first synthesis method for preparing the target product based on the synthesis conditions; and control the at least one device based on the first synthesis method.

The invention relates to a composite rotator cuff patch and a preparation method and application thereof, and belongs to the technical field of biological materials. The structural layer and the biological layer are all-biomedical materials, a cross-linking agent does not need to be introduced, the problem that a traditional synthetic material is non-degradable or short in degradation period is solved through the alternate composite design of the structural layer and the biological layer, the degradation period is controllable, the tear resistance and mechanical support of the patch are improved, and the application prospect is wide. The risk of inflammatory reaction is effectively reduced, the biocompatibility and safety of the patch are improved, and finally the applicability and effect of the composite rotator cuff patch in clinical application are improved.

The present application relates to the technical field of housings of electrical equipment, manufacturing of synthetic materials, coatings and the like, and provides an electrical equipment housing, a sub-film texture coating and a preparation method thereof, the electrical equipment housing has a decorative effect, the sub-film texture coating is used to form the decorative effect, and the sub-film texture coating comprises: 20-30% of polyurethane UV3 resin in terms of weight percentage, 40-60% of silicon modified 15 functional resin in terms of weight percentage, 10-20% of polyurethane acrylic resin in terms of weight percentage, 2-10% of hexanediol diacrylate in terms of weight percentage and 0.1-1% of a photoinitiator in terms of weight percentage. The VOC emission of the sub-film texture coating is very low, the environmental friendliness of a texture setting process of the electrical equipment housing can be improved, and the sub-film texture coating has good stretchability.

The utility model relates to the technical field of chemical equipment, and discloses a chemical synthetic material powder purification and separation device which comprises a supporting frame, the top output end of the supporting frame is fixedly connected with a reaction kettle, the top of the reaction kettle is fixedly connected with a motor, and the bottom output end of the motor penetrates through the top of the inner wall of the reaction kettle. The device is compact and reasonable in structural design, efficient mixing and reaction of raw materials and precipitants can be achieved through the integrated stirring and centrifugal separation technology, the raw materials and the precipitants can be efficiently mixed and reacted, the reaction efficiency is improved, the production cost is reduced, and the production efficiency is improved. By adjusting the addition amount of raw materials and precipitants, stirring and separation conditions and the like, different purification and separation requirements can be easily met, the vertical space is fully utilized, the occupied space of the equipment is reduced, and the problems that in the prior art, the process of treating complex mixtures is complex, and when special mixtures are separated, flexible adjustment cannot be conducted, and the separation efficiency is high are solved. And the occupied space is large.

Embodiments of the present disclosure describe materials and methods of synthesizing materials comprising a metal component, a first polytopic ligand, and a second polytopic ligand that associate to form an intricate mixed-linker structure with a merged-net. Merged nets may be formed from two 3-periodic edge-transitive parent nets that share a common signature net, wherein at least one parent is an embedded three-dimensional representation of a two-periodic (2p), one-periodic (1p), or zero-periodic (0p) net. The approach enables deliberate construction of multicomponent reticular materials that retain two distinct linker types and realize merged-net topologies from parent nets derived from 2p, 1p, and 0p nets.

The utility model discloses chemical synthetic material analysis and inspection equipment which comprises a base station, a material injection assembly used for conveying chemical synthetic materials to be detected is installed on one side of the top of the base station, and a feeding assembly used for placing the chemical synthetic materials to be detected is installed at the position, corresponding to the material injection assembly, of the top of the base station. According to the utility model, not only can the continuous and stable conveying of the chemical synthetic material to be detected be realized, but also the waiting time in the detection process can be obviously reduced, the detection efficiency can be improved, and the large-scale and high-efficiency chemical synthetic material analysis and detection requirements can be met by adopting the continuous conveying mode, and meanwhile, the height of the injection head can be flexibly adjusted; the sample bottles with different heights can be accurately matched, equipment replacement or complex adjustment operation is not needed, the waste and leakage phenomena of chemical synthesis materials can be effectively reduced, and then the applicability and flexibility of the equipment are enhanced.

Medical garment for Parkinson's patients using an apomorphine pump. The invention of this vest model allows Parkinson's patients to wear their apomorphine treatment device in a garment specifically designed for their comfort, replacing the elastic belt usually supplied with the medication. The apomorphine pump device comes with a pouch and a belt, made of synthetic material and generally worn directly against the skin, which causes heaviness and discomfort for the patient, as well as a risk of the tubing detaching.The solution I propose involves manufacturing a vest made of hypoallergenic material, equipped with pockets and an opening system adapted to the apomorphine pump. This allows for: easier handling of the device by both the patient and the nurse; an improved dressing process thanks to a separating zipper opening on the front of the vest; enhanced security for the medical device, which is thus protected under the vest; and discreet clothing. This medical garment, according to the invention, is specifically designed to improve the comfort and quality of life of Parkinson's patients using an apomorphine pump. The attached drawing sheet contains sketches illustrating the vest design and its functionalities.[Fig. 1] shows the vest from the front (1), equipped with a separating zipper allowing for full front opening (2), and two rectangular zippered pockets sized to accommodate the apomorphine pump (3). The pockets have vertical zippers to facilitate insertion and removal of the pump when it is necessary to check the flow rate or administer a bolus (4). The tubing is thus secured inside. [Fig. 2] shows the vest open. The entire medical device connected to the catheter—syringe, tubing, and pump—is inserted into the pocket through a slit in the vest fabric, just behind the pocket. (1) [Fig. 3] shows a close-up of the device on the right pocket. This is a cross-section of the pocket viewed from the inside (1). An opening (slit) is made on the inside of the vest, at the back of the pocket, to allow the passage of the device: pump + syringe + tubing (2).The device is connected to the catheter (3). The entire device is then placed at the bottom of the zippered pocket. [Fig 4] shows the position of the medical device on the male body when placed in the pocket of the POMPIPOCHE vest. [Fig 5] shows the position of the medical device on the female body when placed in the pocket of the POMPIPOCHE vest. [Fig 6] shows an image of the medical device as it is positioned.

The utility model discloses an ultralow-torque rotation-resistant steel wire rope, which relates to the technical field of steel wire ropes, and adopts the following scheme that the ultralow-torque rotation-resistant steel wire rope comprises an inner core rope, an inner hinged steel wire is rotatably wound outside the inner core rope, an outer hinged steel wire is reversely and rotatably wound outside the inner hinged steel wire, and lubricating grease is coated between the outer hinged steel wire and the inner hinged steel wire; the inner core rope is arranged and is made of a high-strength and low-elongation synthetic material, so that the tensile strength and the extrusion resistance of the steel wire rope are improved, and the use safety of stress stretching is ensured; a multi-layer strand structure is formed by adopting a special twisting process, the twisting directions of all layers of steel wires are opposite, the overall torque of the steel wire rope is effectively reduced, the problem of twisting and winding is avoided, the steel wires have high strength and toughness after heat treatment, the surfaces of the steel wires are coated with lubricating grease or anti-rust oil, friction and abrasion between the steel wires are reduced, and the service life of the steel wire rope is prolonged. And the service life of the steel wire rope is effectively prolonged.

The present invention discloses a trithiophene alkyl sulfonic acid polymer, a preparation method and an application thereof. The structure of the trithiophene alkyl sulfonic acid polymer is shown in Formula I. The present invention also provides a preparation method of the polymer shown in Formula I. The synthesis route of the present invention is simple, the synthesis steps are few, and most of the synthesized materials are commercial materials, which is conducive to large-scale synthesis. The trithiophene alkyl sulfonic acid polymer of the present invention is used as a material, and has different ionic thermoelectric properties under different humidity conditions, and at a relative humidity of 90%, the power factor can be as high as 148.98μW / m / K. 2 The polymer of formula I provided by the present invention has a good application prospect in ionic thermoelectric materials.

A flexible hose includes a tubular layer made from a synthetic material and a plurality of metal electrical conductors arranged parallel to one another and to the axis of the flexible hose. The interruption of at least one of the metal electrical conductors in case of an excessive expansion of the flexible hose signals the deterioration and imminent rupture of the flexible hose. The metal electric conductors are exposed in the cross section of the terminal parts of the flexible hose and can be placed in contact with two terminal elements provided with electrical contacts for electrically connecting two conductors positioned side by side and achieving the electrical continuity of all the metal electrical conductors. Intermediate devices can be provided for connecting a terminal of the first flexible hose with the terminals of the adjacent flexible hoses as well as with the power source and the control system.

The utility model discloses a rubber particle pre-pressing instrument for a synthetic material playground surface layer, which solves the problem of rubber particle pre-pressing when the elastic property of the synthetic material surface layer rubber particles is tested. The particle container is positioned on the test table board; the lower jig is located at the bottom of the particle container and used for cooperatively adjusting the position of the particle container; the lead screw is perpendicular to the test table board, and a nut of the lead screw is connected with a transversely-arranged main shaft; the upper jig is mounted on the main shaft, is positioned above the particle container, and can extend into the particle container to pre-press the rubber particles under the driving of the screw rod; the pressure sensor is used for sensing the pressure of the rubber particles in the particle container pre-pressed by the upper jig; the motor drives the lead screw; and the controller is connected with the motor and the pressure sensor so as to control the motor to drive the screw rod to move to move the upper jig into the particle container to pre-press the rubber particles, and the pressure sensor is used for sensing the pressure, so that the pre-pressing pressure and time reach set values.

The invention relates to a medium-entropy sodium ion battery positive electrode material and a preparation method thereof, and belongs to the technical field of sodium ion batteries. The chemical formula of the medium-entropy sodium ion battery positive electrode material disclosed by the invention is Na < x > Fe Mn M < c > O < 2 >, wherein M is Cu, Zn, Ni, Cr, Co, Ti, Sn and Mg, x is larger than or equal to 0.5 and smaller than or equal to 1, a is larger than or equal to 0.2 and smaller than or equal to 0.5, b is larger than or equal to 0.3 and smaller than or equal to 0.8, c is larger than 0 and smaller than or equal to 0.2, a + b + c = 1, and the values of x, a, b and c meet the charge balance of the chemical formula. The medium-entropy material is constructed by carrying out entropy value regulation and control on the layered transition metal oxide, the crystal face proportion is reasonably regulated and controlled, and finally the structural stability (phase change) and the electrochemical performance are improved. In addition, a proper transition metal element synthetic material is selected to form the medium-entropy layered composite metal oxide positive electrode material, so that the medium-entropy layered composite metal oxide positive electrode material has higher phase change resistance compared with a high-entropy material and has longer cycle life compared with a low-entropy material.

The invention relates to a flexible polyurethane panel with an integrated polyvinyl chloride skin, which comprises a panel main body, the panel main body comprises a polyurethane body and a polyvinyl chloride skin, the polyurethane body is formed by reaction of polyether polyol and isocyanate according to a weight ratio of 40: 60-60: 40, and the density of the polyurethane body is 100-400kg / m < 3 >; the thickness of the polyvinyl chloride skin is 0.05-0.30 mm, and the polyvinyl chloride skin and the polyurethane body are integrally formed and seamlessly bonded; comprising the following steps of heating, film laying, mixing and curing. According to the invention, the polyvinyl chloride film is used as the skin, and the closed-pore structure of the polyurethane body is combined, so that the waterproof rate of the panel is greater than or equal to 95%, and the water seepage phenomenon is avoided after 24-72 hours of water soaking test, thereby effectively solving the problem of water seepage of the wall surface; meanwhile, the product is made of fully synthetic materials and does not contain nutritional ingredients needed by termites and moths, insect repellents can be selectively added, the 100% termite-resistant and moth-resistant effects are achieved, and the service life of the material in a humid and insect-rich environment is remarkably prolonged.

The utility model discloses an amorphous stator core for a new energy motor, which relates to the technical field of motors and comprises a stator core made of amorphous synthetic materials, the stator core comprises a plurality of core laminations, the plurality of core laminations are overlapped to form the stator core, a rotor support is arranged in the center of the interior of the stator core, and the rotor support is connected with the stator core. And a plurality of winding supports are arranged outside the stator core. Compared with a traditional silicon steel sheet stacking structure, the amorphous stator iron core is formed by laminating thin-layer amorphous strips, magnetic hysteresis loss and eddy current loss are reduced, the loss of the iron core is reduced, the motor can achieve high output power under the condition of low current and magnetic field, and the service life of the motor is prolonged. The magnetic performance of the amorphous material is very excellent in a high-frequency working environment, and the overall efficiency of the motor is optimized by utilizing lower eddy-current loss and hysteresis loss of the amorphous material under a high-frequency condition.

The present invention provides a chitosan-based composition that can be converted into a self-supporting casted object having good tensile and compressive strength that can also biodegrade at the end of its lifecycle. The composition comprises entirely bio-based or bio-sourced reagents that can be converted to the final product via a polymerization process that does not require the addition of inorganic catalysts, synthetic materials, or otherwise hazardous chemicals to strengthen or modify its water resistance.

The present invention relates to a fluid machine, in particular a turbomachine, preferably a fan, having a component for guiding a fluid medium, such as an impeller blade, guide vane, hub ring, cover ring, base disk, nozzle or housing part / element, wherein the component for guiding the fluid medium is manufactured from a synthetic material by casting, preferably by injection molding, and wherein riblets are formed at least partially on and / or on and / or in the surface of the component in the area around which the flow occurs. The invention also relates to a method for manufacturing a component for guiding a fluid medium.

An apparatus for coating a workpiece that consists at least in sections of wood, wood-based material, synthetic material or the like. The apparatus can include a pressing device for pressing a coating material onto a surface of the workpiece to be coated, a conveying device for inducing a relative movement between the workpiece and the pressing device, an activation device for activating a joining agent used for joining the coating material to the surface of the workpiece to be coated, and a sensor for detecting an operating variable of the joining agent. The apparatus can include a shielding device for shielding a sensor section of the sensor.

This application relates to hydrogel substrates for growing biological materials including, but not limited to, plants, fungi, and bacteria. In some embodiments, this application provides a platform for optimizing the growth of biological materials using various forms of hydrogel substrates. In other embodiments, this application provides methodologies and compositions for growing biological materials such as plants in a hydrogel substrate blend comprising a hydrogel substrate and one or more of the following: soil, cocoa, peat moss, rock wool, wood, wood chips or mulch, wood fibers, processed wood fibers, tree fibers, hemp, bamboo, bark, sand and sand grains, perlite, pumice, clay, vermiculite, biochar, natural or processed raw materials, and / or synthetic materials. In other embodiments, this application provides methodologies and compositions for growing biological materials such as plants in a hydrogel-bound plug, the hydrogel-bound plug does not contain synthetic adhesives or synthetic glues.