487 results about "Synthetic materials" patented technology

Disclosed herein is a method of making a composite fabric for use in or as a medical implant component, the method comprising steps of providing a textile comprising at least one strand having titer of 2-250 dtex and comprising fibers made from a biocompatible and biostable synthetic polymer; determining locations on the textile where a cut is to be made for an intended use of the textile; optionally pretreating the textile at least at the determined locations on at least one side of the textile with a high-energy source to activate the surface; solution coating the textile at least at a determined location with a coating composition comprising a biocompatible and biostable polyurethane elastomer and a solvent for the polyurethane; removing the solvent from the coated textile; and laser cutting the coated textile as obtained at least a one coated location with an ultra-short pulse laser; to result in a composite biotextile wherein polyurethane is present in an amount of 2.5-90 mass % based on composite biotextile and polyurethane is present at least at a laser-cut edge. Such composite biotextile as made shows an advantageous combination of good biocompatibility, especially hemocompatibility, high strength and pliability, and has well-defined regular edges that have high suture retention strength. Further embodiments concern the use of such composite biotextile in or as medical implant component for an implantable medical device; such as in orthopedic applications and cardiovascular implants. Other embodiments include such medical devices or implants comprising said composite biotextile or medical implant component.

A hinge comprising: a first hinge member (110) comprising a cylinder barrel (117) having a longitudinal direction (118); a second hinge member (111) pivotably mounted on the first hinge member (110); and a dashpot interposed between said hinge members (110, 111) and configured for damping a closing movement of said closure member. The dashpot comprises a closed cylinder cavity formed within the cylinder barrel (117); a damper shaft (124) which extends into the cylinder cavity and is connected to the second hinge member (111); and a piston (147) within said cylinder cavity. The hinge members (110, 111) are made of a synthetic material and the damper shaft (124) is made of metal.

The invention relates to the field of synthetic materials, in particular to a polyimide water-phase synthetic method and application. Comprising the following steps: adding blocked diisocyanate and tetracarboxy dianhydride into water, adding a salt-forming agent, and carrying out polymerization reaction to obtain a polyimide solution. A closed diisocyanate unit is used for replacing a diamine monomer, so that water-phase synthesis of polyimide is realized, excellent mechanical properties are achieved, the mechanical properties and heat resistance of the polyimide are close to those of oily polyimide, and the structure of water-based polyimide is enriched.

The present invention relates to the technical field of seawater desalination membranes, and discloses a durable seawater desalination membrane and a preparation method thereof. The present invention uses pentaerythritol as an initiator, uses propylene oxide and ethylene oxide as raw materials to synthesize a hyperbranched polyether, and then undergoes an ester exchange reaction with 2-aminoethyl acetate to synthesize a modified hyperbranched polyether. The ZIF-8 material is then synthesized by a hydrothermal method, and MoS2 nanosheets are coated on its surface to obtain a MoS2 / ZIF-8 composite material, which is then surface-modified by a silane coupling agent to obtain a modified MoS2 / ZIF-8 composite material. Finally, a casting solution is formed using polysulfone and a modified MoS2 / ZIF-8 composite material to obtain a base membrane, and the base membrane is then sequentially immersed in an aqueous phase solution and an oil phase solution to form a polyamide film layer, thereby obtaining a durable seawater desalination membrane. The seawater desalination membrane prepared by the present invention has excellent water flux, desalination rate and durability.

A synthetic turf having a mat with a face arranged adjacent to a surface to coat, and a face opposite the face. The turf includes a plurality of blades made of a synthetic material that are connected to the mat. Above the face of the mat, an infill material is provided that is arranged among the blades. The infill material includes a predetermined percentage by volume of a vegetable material consisting of rachis of cereal ear.

Methods of synthesizing MOF materials are disclosed. Further, plasmonic MOF composites and uses thereof as a recyclable catalyst, for ultrafast desorption (e.g., of solvents), MOF activation are also disclosed.

The invention provides an anti-erosion refractory material for calcination of an aluminum ash rotary kiln and a preparation method of the anti-erosion refractory material, and relates to the technical field of refractory materials. Comprising the following raw materials in percentage by mass: 20%-70% of flint clay with the particle size of 0-5mm, 5%-40% of synthetic mullite with the particle size of 0-5mm, 5%-20% of synthetic mullite powder with the particle size of 0-0.074 mm, 1%-20% of silica powder with the particle size of 0-0.074 mm, 1%-15% of synthetic material powder with the particle size of 0-0.074 mm and 1%-15% of clay with the particle size of 0-0.074 mm. According to the anti-erosion refractory material for calcination of the aluminum ash rotary kiln and the preparation method thereof, a high-viscosity glass phase is generated in situ, and a dynamic protection layer is formed on the surface of the refractory material to prevent permeation of harmful gas, so that the thickness of a metamorphic layer is reduced, damage to a refractory product is slowed down, and the service life is prolonged; through the synergistic effect of the silica powder and the synthetic powder, the refractory material can be sintered at a low temperature, and the production energy consumption is reduced.

The invention belongs to the technical field of polymer synthetic materials, and particularly relates to bio-based MS resin and a preparation method thereof. The bio-based MS resin is a free radical copolymer of a methyl methacrylate monomer and a styrene monomer; the methyl methacrylate monomers comprise bio-based methyl methacrylate, isobornyl methacrylate and 3-pinane methacrylate, and the methyl methacrylate monomers comprise methyl methacrylate, isobornyl methacrylate and 3-pinane methacrylate; the styrene monomers comprise styrene and caffeic acid derivatives; based on 100% of the mass of the bio-based MS resin, the methacrylate monomer accounts for 30%; the molar ratio of caffeic acid derivatives to styrene in the styrene monomers is 1: (1-9). The synthesized bio-based MS resin has the characteristics of greenness and reproducibility, compared with petroleum-based MS resin, the performance of the MS resin can be regulated and controlled by designing a protecting group of a bio-based caffeic acid derivative so as to expand the application range of the MS resin, a specific functional group can be introduced to prepare a functional, advanced and high-performance polymer material, and the MS resin has a good market prospect.

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 invention discloses a landfill leachate treatment material, which comprises a nanocellulose composite aerogel adsorbent and a binder, and further comprises an artificial synthetic material, a magnetic material, a high-molecular compound, a synthetic high-molecular material and a natural adsorption material, which are prepared to form an integral structure material. The composite material is used for heavy metal adsorption treatment of the landfill leachate, various natural and synthetic materials are combined to prepare a treatment material capable of adsorbing heavy metals in various landfill leachate, and the efficiency of adsorbing the heavy metals in the landfill leachate can be greatly improved.

The utility model discloses a testing device which comprises a weight disc and further comprises a vertical frame, the front face of the vertical frame is provided with a limiting sliding groove, and a screw rod is installed in the limiting sliding groove in a threaded mode. The measuring mechanism comprises a first sliding block and a bracket, the upper end of the bracket is fixedly connected with the lower portion of the first sliding block, the first sliding block is installed in the limiting sliding groove in a sliding mode, and the weight disc is placed on the bracket; and the jacking mechanism comprises a second sliding block and a damping telescopic rod, the second sliding block is installed in the limiting sliding groove in a sliding mode, and a threaded sleeve block and a clamp are installed on the second sliding block in an embedded mode. Through the self weight of the weight disc and the measuring mechanism and the downward pulling force applied to the organic synthetic material, under the condition that the organic synthetic material deforms, the pulling force applied to the organic synthetic material does not change due to the fact that the overall mass of the weight disc and the measuring mechanism is not changed; and the organic synthetic material with high deformation capability can be effectively tested.

The present invention discloses a breach rapid plugging device and method based on rocket anchors and polymer composite materials, which relates to the technical field of plugging breaches in water conservancy projects, including broken dike heads on both sides of the breach, and the outer periphery of the broken dike heads on both sides is provided with a wrapping structure, the wrapping structure includes a first line of protection and a second line of protection, the second line of protection is connected to a fixed structure, and the fixed structure is arranged on the broken dike head; an entry and closure structure is arranged between the wrapping structures on both sides, and the two ends of the entry and closure structure are connected to the wrapping structures on both sides. The present invention adopts the above-mentioned breach rapid plugging device and method based on rocket anchors and polymer composite materials, adopts a large geotextile to stabilize the dike head, rocket anchors and polymer geosynthetics to quickly plug the breach, and finally adopts a rubber bag to be filled with water for covering and pressing, which further improves the stability of the wrapping head, and has the advantages of fast plugging speed and high efficiency.

The invention discloses an instrument and a method for detecting the equivalent elasticity of rubber particles of a synthetic material playground surface layer, and solves the problem of lack of an instrument and a method for detecting the elasticity of the rubber particles of the synthetic material surface layer paved on the playground. The relative height of standard rubber particles with specific high polymer content, specific particle size and specific mass after pre-pressing in a container is taken as a reference, and is compared with the rebound value of the rubber particles to be tested under the same test condition, so that the equivalent elasticity of the rubber particles to be tested is obtained.

In one aspect, a composition is disclosed that includes an agglomeration of a plurality of porous microparticles forming a hierarchically porous material structure. The porous microparticles can be formed of a biogenic and / or a synthetic material. In some embodiments, a plurality of binder can be distributed among the microparticles to facilitate the agglomeration of the plurality of the microparticles.

A floor covering, made of floor elements, which, at least at two opposite sides, includes a male coupling part and a female coupling part, which allow that two of such floor elements to be interconnected by pushing one of these floor elements with the associated male coupling part, by a downward movement, home into the female coupling part of the other floor element. At least one of the coupling parts, either the male coupling part or the female coupling part, is made as least partially in a filled synthetic material composite, such as extruded wood.

The fluidic device (1) comprises a tubular end portion (9) of a first pipe (7), this portion (9) being essentially made from synthetic material and having at least one electrically conductive inner surface (25), as well as an outer surface (27), a connector (17), suitable for a second pipe (11), the connector (17) comprising an electrically conductive tubular insert (19), received in the end portion (9) of the first pipe (7) and in contact with at least part of the inner surface (25) thereof.

The invention relates to the technical field of conveying equipment, and particularly discloses an automatic material conveying device for polyurethane plastic track synthetic material production, which comprises a conveying mechanism, the conveying mechanism comprises a conveying pipe, a driving assembly, a feeding hopper and a discharging hopper, the discharging hopper is provided with a telescopic charging barrel, and the telescopic charging barrel comprises a dustproof part and a plurality of blanking assemblies. The blanking assembly comprises connecting pieces and at least two buffering pieces, the connecting pieces are annular, the upper ends of the buffering pieces are elastically connected with the connecting pieces, the buffering pieces incline in the direction close to the axial directions of the connecting pieces from top to bottom, any two adjacent connecting pieces are elastically connected, the dustproof piece comprises cover cloth and a plurality of connecting parts, the connecting parts are annular, and the connecting parts are arranged on the cover cloth. The connecting parts are longitudinally arranged at intervals and fixed relative to the cover cloth, and the connecting piece on the lowermost side is fixed relative to the connecting part on the lowermost side. According to the conveying device, materials are fully buffered in the discharging process, flying dust is reduced, the consistency of the abrasion degree in the using process of the buffering pieces is improved, and the service life is prolonged.

The invention relates to the technical field of shells of electrical equipment, manufacturing of synthetic materials, coatings and the like, and provides an electrical equipment shell, a sub-film texture coating and a preparation method thereof, the electrical equipment shell has a decorative effect, and the sub-film texture coating is used for forming the decorative effect. The sub-film texture coating is prepared from the following components in percentage by weight: 20 to 30 percent of polyurethane UV3 functional resin, 40 to 60 percent of silicon modified 15 functional resin, 10 to 20 percent of polyurethane acrylic resin, 2 to 10 percent of hexanediol diacrylate and 0.1 to 1 percent of photoinitiator. The VOC emission of the sub-film texture coating is very low, the environmental protection property of the electrical equipment shell texture setting process can be improved, and the sub-film texture coating is good in stretchability.

The utility model provides a bamboo-plastic braided rope and a composite pipe using the same, the bamboo-plastic braided rope comprises bamboo splits and polyethylene materials, the number of the bamboo splits is three, the three bamboo splits are mutually staggered to form a bamboo rope, and the composite pipe comprises a pipeline and the bamboo-plastic braided rope wound on the periphery of the pipeline. According to the bamboo-plastic braided rope, the overall performance of an underground pipeline is improved, the bamboo splits have good environmental protection performance and moderate rigidity, polyethylene serves as a plastic material and can provide good toughness and weather resistance, the bamboo splits and the polyethylene are tightly combined through specific braiding and forming processes, and the bamboo-plastic braided rope with the weather resistance and toughness of the polyethylene is formed. And the bamboo-plastic braided rope is wound on the periphery of the underground pipeline, so that the overall rigidity and toughness of the pipeline are enhanced, a more environment-friendly and economical underground pipeline solution is provided, and the advantages of natural materials and modern synthetic materials are fused.

The utility model relates to a cooperative treatment system for garden waste and kitchen waste. The cooperative treatment system comprises a kitchen waste pretreatment system (1), a garden waste pretreatment system (2), a mixed inoculation system (3), a dry anaerobic system (4) and a solid-liquid separation system (5). The kitchen garbage pretreatment system (1) comprises a crusher (1-1), a magnetic separator (1-2) and a screening machine (1-3), and is used for crushing kitchen garbage for pulping and separating organic matters and inorganic matters; the garden waste pretreatment system (2) comprises a crushing unit (2-1) and an acid and enzyme treatment unit (2-2), and is used for crushing garden waste into proper particle sizes and carrying out acid and enzyme combined pretreatment; the mixed inoculation system (3) is used for mixing the pretreated kitchen waste slurry and the pretreated garden waste slurry and carrying out heating inoculation and material blending on the mixed slurry; the dry anaerobic system (4) is used for fermenting the slurry to produce biogas; and the solid-liquid separation system (5) is used for separating the fermentation slurry into biogas residues and biogas slurry. Through cooperative treatment of garden waste and kitchen waste, the biogas yield is increased, and the system is simple in technological process and high in stability.

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.

The invention belongs to the technical field of sewage treatment, and provides a constructed wetland nitrogen and phosphorus removal combined filler, a constructed wetland nitrogen and phosphorus removal device and application of the constructed wetland nitrogen and phosphorus removal device, and the combined filler comprises the following components in parts by mass: 7.5-8 parts of a sulfur autotrophic synthetic material, 2-4 parts of wheat straw, 8-12 parts of zeolite and 4-6 parts of a phosphorus removal synthetic material. The invention further provides a nitrogen and phosphorus removal device for the constructed wetland. The nitrogen and phosphorus removal device comprises a plant layer, a nitrogen removal layer, a phosphorus removal layer and a supporting layer from top to bottom in sequence, the denitrification layer and the dephosphorization layer are filled with the combined filler for denitrification and dephosphorization of the constructed wetland. When the filler is added into the constructed wetland, a sulfur autotrophy and heterotrophy synergistic denitrification system can be formed, and an efficient effect is achieved on nitrogen and phosphorus removal of wastewater. The combined filler is introduced for filling, so that deep treatment of nitrogen and phosphorus in secondary effluent by the wetland can be effectively improved, and compared with artificial wetlands purely added with gravels and filled in a mixed manner, the constructed wetland has remarkable advantages.

The invention discloses a high-entropy alloy and a preparation method thereof. The method comprises the following steps: synthesizing a ZIF-8 material by adopting a hydrothermal method; the ZIF-8 material and metal salt are mixed and dispersed in a solvent, and a high-entropy ZIFs precursor is obtained through post-treatment; the high-entropy ZIFs precursor is dissolved in a solvent, and then the mixture is dispensed to the surface of a substrate and dried; and the dried substrate is transferred into a container for laser treatment, and the high-entropy alloy is obtained. The high-entropy alloy is prepared by carrying out laser treatment on the high-entropy ZIFs precursor, the method is simple, the reaction condition is mild, the cost is low, the reaction is rapid and efficient, the method is environmentally friendly and free of pollution, and synthesis of the high-load high-entropy alloy on any material substrate under the normal-temperature and normal-pressure environment is achieved.

Smartcard (SC) having a metal card body (MCB) which is a coupling frame (CF) with a slit (S), and a coupling loop antenna / structure (CLA, CLS) connected to termination points (TP) on each side of the slit (S) and coupled with the module antenna (MA) of a transponder chip module (TCM). A portion of the card body (CB) may be metal and another, coplanar portion of the card body may be a synthetic material which may be transparent or translucent. Currents may be collected from the interface between the two portions. The card body (CB) may have two metal layers of different materials, adhesively joined to each other using a thermosetting epoxy that converts from B-stage to C-stage during lamination.

The invention discloses a preparation method of a spongy solid amine CO2 adsorption material, polyethyleneimine is used as a matrix, so that the number of active adsorption sites contained in unit mass of the adsorption material is large, and the CO2 adsorption capacity of the adsorption material is improved; secondly, the polyethyleneimine is subjected to thermo-sensitive modification through Michael addition, so that the synthesized material can be desorbed and regenerated at a relatively low temperature, and the regeneration energy consumption is reduced; furthermore, the adsorption material is synthesized by adopting a high internal phase emulsion template method, so that the adsorption material has a typical micron-to-mm-level interconnecting porous structure, mass transfer and diffusion of gas molecules in the adsorbent are facilitated, and the adsorption capacity and the adsorption dynamic performance of the adsorbent are further improved; the water absorption swelling rate of the adsorption material obtained by the preparation method is 250-900%, and the existence of water molecules can promote mass transfer and diffusion of gas molecules in the adsorbent, so that efficient adsorption of CO2 under a humid condition is realized.

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.

A floor panel for forming a floor covering, where the floor panel includes a layer-shaped substrate, as well as a decorative top layer situated above the substrate; and where the substrate includes at least a layer which is realized on the basis of a composition including at least a thermoplastic synthetic material being polyester.

The processes and products described herein optimize transformation of BNNT as-synthesized material into BNNT intermediary materials. Process steps include refining to remove boron particulates, high temperature refining to break bonds between BNNT, h-BN nanocages, h-BN nanosheets and amorphous BN particles, centrifuging and microfluidic separation, and electrophoresis. Resultant BNNT intermediary materials include purified BNNT in solution, BNNT gels, h-BN nanocages, and h-BN nanosheets, gel spun BNNT fibers, hydrophilic defect enhanced BNNT materials, BNNT patterned sheets, and BNNT strands. Applications that will utilize these BNNT precursor feedstock materials include making BNNT based aligned components, thin films, aerogels, thermal conductivity enhancements, structural materials, ceramic, metal, and polymer composites, and removal of PFAS pollutants from water.

The invention relates to the technology of refractory materials, in particular to a process and system for producing alumina-based high-temperature synthetic materials, the system comprises a crushing unit, a dry grinding unit, a wet grinding unit, a mixing unit, a press unit, a drying kiln and a tunnel kiln, the drying kiln is connected with the tunnel kiln through a track, the crushing unit is connected with the dry grinding unit and the wet grinding unit, and the mixing unit is connected with the dry grinding unit and the wet grinding unit. The dry grinding unit and the wet grinding unit are respectively connected with the material mixing unit, the material mixing unit is connected with the press unit, the manipulator is arranged between the press unit and the drying kiln, the press unit performs automatic pressing, material distribution and brick discharging, the manipulator performs brick stacking according to programming, and the brick stacking vehicle sequentially enters the drying kiln and the tunnel kiln through the track. According to the method, the water content and the mixing ratio of the dry grinding powder and the wet grinding slurry are finely controlled, and the mixing means of the original process is improved, so that the production cost is lower, the quality of the obtained product is better, and the production efficiency of the alumina-based high-temperature synthetic material is effectively improved on the premise of energy conservation and emission reduction.