198 results about "Polymeric membrane" patented technology

The invention discloses a method for preparing low-grafted glucosyl stevioside at high temperature and high pressure, which comprises the following steps: taking stevioside as a receptor, beta-cyclodextrin as a donor and CGT enzyme as a catalyst for reaction to obtain reaction liquid containing glucosyl stevioside; putting the reaction liquid containing the glucosyl stevioside into a high-pressure reaction kettle, and adding a catalyst to carry out high-temperature and high-pressure cracking reaction; after the high-temperature and high-pressure cracking reaction is finished, cooling a cracking solution to room temperature, filtering, concentrating for multiple times by adopting a polymeric membrane, and collecting a trapped fluid; and carrying out spray drying on the trapped fluid to obtain the low-grafting glucosyl stevioside. According to the method, firstly, glucosyl stevioside is prepared by adopting an enzyme modification method, then splitting decomposition is performed under certain conditions, and then a specific purification process is performed, so that the prepared product is high in stability, the proportion of low-grafted glucosyl stevioside in the product is high, and the product tastes good.

The invention discloses a multi-layer polymeric membrane functional current collector and a preparation method thereof, a pole piece and a battery, and the preparation process comprises the following steps: S1, blending and granulating ultra-high molecular weight polyethylene and high density polyethylene to prepare a composite layer raw material; s2, adding the composite layer raw material and the middle layer nylon raw material into a screw extruder, and carrying out co-extrusion casting to form a composite layer-middle layer-composite layer three-layer structure film; s3, carrying out plasma activation treatment on the obtained three-layer structure film; s4, forming nanoscale pits in the outer surface of the three-layer structure film by dipping the three-layer structure film in the treating fluid; and S5, preparing a metal layer on the outer side of the three-layer structure film to obtain the multi-layer polymer film functional current collector. Through material blending optimization, multi-layer structure design and surface functionalization treatment, the mechanical property and dimensional stability of the current collector base film and the binding force between the current collector base film and a metal coating are remarkably improved.

The invention discloses a high-performance Mg < 2 + > / Li < + > separation nanofiltration membrane and a preparation method thereof, the Mg < 2 + > / Li < + > separation nanofiltration membrane is a polymer composite membrane, and is composed of a surface separation layer and a support layer; the surface separation layer is formed by self-assembling a polycation electrolyte and a polyanion electrolyte layer by layer, the supporting layer is formed by ultraviolet grafting of any one or two of sodium polystyrene sulfonate, polymethylacrylic acid 3-sulfonic acid propyl ester potassium salt and polyacrylic acid on the surface of a hydrophobic polymeric membrane, and the surface of the supporting layer is negatively charged. The negative charge amount of the supporting layer is gradually reduced from top to bottom; the whole separation membrane has the characteristics that the upper layer is hydrophilic and the lower layer is hydrophobic. By adjusting the charge density and aperture of the supporting layer, the structure of the surface separation layer is influenced, the charge repulsion effect, aperture screening effect and built-in electric field intensity of the whole membrane are enhanced, and the Mg < 2 + > / Li < + > separation factor is increased. Permeation and rapid transportation of water are promoted by virtue of a hydrophilic upper-layer and hydrophobic lower-layer structure, and the membrane flux is improved; the preparation process is simple, and the used solvent is water, so that the method is green and environment-friendly and has a good application prospect.

The present disclosure relates to the technical field of film material, and particularly to a polymeric polyphenol-modified polymer film, a preparation method thereof and a metallized polymer film. According to the present disclosure, corona treatment is performed to a surface of a polymer layer, so that a polar modifying liquid can uniformly coat the surface of the polymer layer, thereby forming a modification layer tightly combined with the polymer layer. Thus, the low-polarity polymer layer surface can be imparted with a durable high polarity. Consequently, the polymer layer is capable of being stably and tightly bonded to a material layer with high polarity and high surface tension, such as a metal layer, for a long period of time, effectively broadening the application scenarios for non-polar polymer substrate layers. By controlling the concentrations of the polyphenolic compound and the cross-linking agent in the modifying liquid, the modification layer formed by a cross-linking reaction can have a suitable cross-linking density and an adequate number of hydroxyl groups, thereby further effectively and stably enhancing the long-term polarity and surface tension of the polymer layer. The preparation method is simple and easy to operate, cost-effective, efficient, and easy to scale up.

The present invention relates to a medical device manufactured using the additive manufacturing process (3D printing). It is a medical device used preferably as a bone graft composed of a porous structure based on bioceramics based on β-tricalcium phosphate (β-TCP) or hydroxyapatite, which may or not contain nanostructures in its composition, for example: carbon nanostructures (graphene, graphene oxide, reduced graphene oxide, carbon nanotubes, etc.) and, in preferred embodiments, stem cells and polymeric membrane. Also, the present invention relates to the use of this device as a bone graft and the process of preparing this device.

The invention provides a polymer composition, a polymer film material, a holographic grating, a preparation method of the holographic grating, an optical film material and display equipment. The polymer composition comprises a first polymerizable monomer, a second polymerizable monomer and a film-forming resin. The first polymerizable monomer is a non-liquid crystal monomer; the second polymerizable monomer is a liquid crystal monomer, the second polymerizable monomer comprises an active group, and the second polymerizable monomer can be subjected to a copolymerization reaction with the first polymerizable monomer through the active group under illumination. The refractive index modulation degree of the optical film material can be improved by using the polymer composition.

The invention discloses a wear-resistant and fibrillating-resistant spun silk fiber and a preparation process and application thereof, a layer of smooth and continuous amino acid-containing polymeric membrane protective layer with uniform thickness is formed on the surface of the spun silk fiber, the thickness of the polymeric membrane protective layer is 50-500nm, and the thickness of the polymeric membrane protective layer is 50-500nm. The polymeric membrane protective layer enables the spun silk fibers to be wear-resistant and anti-fibrillating, the spun silk fibers are not easy to damage after being treated by dyeing and after-finishing processes, and the prepared fabric can still keep good hand feeling and color after being washed for multiple times. Besides, the preparation process is simple, efficient and wide in applicability, and the prepared wear-resistant and fibrillating-resistant spun silk fiber can be used for spinning and weaving independently or together with other fibers and can be applied to the fields of clothes, underwear, home textiles, filling and the like.

This invention belongs to the field of polymer membrane material technology and discloses a method for extracting uranium (UO2) from seawater. 2+ This invention discloses a novel separation membrane material, specifically a amine-oxime-modified polycarbonate membrane, its preparation method, and its applications. The invention uses polycarbonate (PC) as a matrix. First, cyano-modified polycarbonate (PCAN) is prepared by grafting cyano groups. Then, PC and PCAN are blended, and a base membrane material is prepared using a phase inversion method. Finally, through in-situ amine-oxime modification, an amine-oxime-modified polycarbonate membrane (PCAO) is obtained, which possesses advantages such as high adsorption capacity, easy recovery, good stability, and excellent recyclability. Furthermore, the polycarbonate membrane modified with amine-oxime groups exhibits highly efficient selective adsorption capacity for uranium, enabling the effective development of uranium resources in seawater. This not only alleviates the domestic shortage of these key energy materials but also significantly improves economic benefits.

The invention belongs to the technical field of polymeric membrane composite glass, and discloses a preparation method and application of polymeric membrane composite glass, the polymeric membrane composite glass comprises a first glass layer, a second glass layer and an EVA composite membrane located between the two glass layers, the EVA composite membrane contains nano metal oxide particles, and the nano metal oxide particles contain nano metal oxide particles. The nano metal oxide particles comprise cerium oxide, tungsten oxide, titanium oxide and yttrium oxide. The middle layer of the EVA composite film of the polymeric film composite glass additionally comprises nano metal oxide particles, tungsten oxide absorbs near-infrared heat radiation, titanium oxide reflects infrared light, cerium oxide and yttrium oxide can absorb ultraviolet light, and the heat insulation performance is excellent; according to the present invention, with the nano-metal oxide particles, the tungsten oxide, the tin oxide and other nano-oxide particles, the elastic modulus, the density and the viscosity of the EVA are increased, the sound wave conduction path is effectively blocked, the sound insulation and noise reduction performance is excellent, the nano-metal oxide particles can improve the interface bonding strength of the EVA composite film and the glass layer, and the safety performance is high.

In order to solve the problem that an existing bipolar battery adopting liquid electrolyte has the risk of internal short circuit, the invention provides a composite current collector, the composite current collector comprises a base film, a first conducting layer and a second conducting layer, the base film is a polymeric film, the base film comprises a middle area and an edge packaging area, and the edge packaging area surrounds the periphery of the middle area; the first conductive layer covers the surface of one side of the middle area, and the second conductive layer covers the surface of the other side of the middle area; in the initial state, the porosity of the middle area is larger than that of the edge packaging area, at least part of pores of the middle area are through holes, and the porosity of the edge packaging area is smaller than 5%. Meanwhile, the invention also discloses a bipolar pole piece and a bipolar battery comprising the composite current collector. According to the invention, the risk of internal short circuit is effectively reduced on the premise of ensuring low impedance, and the bipolar battery with high energy density, low impedance and high safety is obtained.

The invention relates to the technical field of multi-layer composite polymeric membrane die cutting devices, and provides a multi-layer composite polymeric membrane one-time synchronous die cutting device and a forming technology.The multi-layer composite polymeric membrane one-time synchronous die cutting device comprises a machining table, the top of the machining table is fixedly connected with a die cutting table, a die cutting groove is formed in the die cutting table, and adsorption holes are formed in the die cutting table; a positioning mechanism is installed on the outer wall of the machining table and comprises a driving motor fixedly installed on the outer wall of the machining table, and an output shaft of the driving motor is fixedly connected with a threaded rod through a coupler. By starting a driving motor, a threaded rod can rotate, a movable block slides along a machining table, a piston fixedly connected with one end of a movable rod slides along an air cylinder, the air cylinder is driven to extract air inwards, an adsorption hole is made to extract air downwards, and the effect of conveniently adsorbing and positioning a multi-layer composite polymeric membrane placed on the die cutting table is achieved; therefore, the die cutting stability of the multi-layer composite polymeric membrane is improved.

The present application relates to a knitted covered stent, comprising: a support layer and a flow-restricting layer, wherein the support layer is formed from braiding units braided into a hollow cylindrical braided structure, and the flow-restricting layer is formed from braiding units knitted together; the support layer serves as a base scaffold of the stent and provides necessary mechanical support, the flow-restricting layer is a knitted structure covering an exterior of the support layer, wherein the flow-restricting layer uses a knitting process where the braiding units are interlooped and continuously knitted into a mesh covering the exterior of the support layer, and an inner side of the flow-restricting layer is adhered to an outer side of the support layer, resulting in a knitted covered stent comprising a braided structure + a knitted structure; moreover, an interlayer connection structure is provided between the support layer and the flow-restricting layer, so as to achieve interlayer connection and fixation between the support layer and the flow-restricting layer. Compared with conventional laser-cut scaffold + polymer membrane designs, the present application exhibits superior wall apposition and compliance, with better adaptability to vessel morphology and dynamics, thereby improving implantation performance and therapeutic efficacy of stents.

The invention provides a polymeric membrane material, an optical membrane material and display equipment. The polymeric membrane material comprises a photopolymerization monomer, film-forming resin, blocked isocyanate and a photoinitiator before illumination, the film-forming resin comprises a compound containing active hydrogen, the photopolymerization monomer can be subjected to a polymerization reaction after illumination, and the blocked isocyanate and the compound containing active hydrogen can be subjected to a copolymerization reaction after heat treatment.

A preparation process for preparing a low-resistance polymer film by using plastic sintered plate waste, relating to the technical field of polymer film preparation. The electrical conductivity of a residual material generated during processing of plastic sintered plates is altered by means of methods such as cleaning, crushing, grinding and melt blending, thereby enhancing the efficient utilization of waste materials; this allows for the production of low-resistance polymer films from the residual material generated from the heads and tails of the plastic sintered plates. A three‑stage stretching operation is performed on a semi-finished film blank, and the stretched polymer film exhibits improved mechanical properties, electrical properties, and thermal stability. By optimizing the stretching process, waste of raw materials and energy consumption during processing can be reduced, thereby reducing production costs. The stretching stage operation can reduce internal defects and stress concentration of the films, thereby improving the overall quality and consistency of finished products.

Disclosed are affinity chromatography devices comprising a fibrillated heat treated polymeric membrane containing inorganic particles having a spherical shape and a particle size distribution with D90 / D10 less than or equal to 3. A blend or composition of spherical inorganic particles having a nominal particle size of about 5 microns to about 20 microns can be used. Further, the devices have a hydraulic permeability of about 200 (X 10 ‑12 cm 2 ) to about 700 (X 10 ‑12 cm 2 ). The affinity chromatography devices have a dynamic binding capacity (DBC) at 10% breakthrough of greater than 35 mg / ml at a residence time of 20 seconds. Additionally, the affinity chromatography devices have a cycle durability of at least 100 cycles at an operating pressure of no more than 0.3 MPa. Also disclosed are collectors comprising a plurality of affinity chromatography devices and a plurality of collectors in parallel configuration.

This utility model discloses a hydrogen injection device for a hydrogen refueling station, including a cooling tank. A first connecting pipe and a second pair of connecting pipes are fixedly installed opposite each other on both sides of the cooling tank. A heat exchange pipe is fixed between the first connecting pipe and the second pair of connecting pipes. Multiple filter cartridges are arranged on the side of the cooling tank closest to the first connecting pipe. Each filter cartridge contains a primary filter screen, a secondary ceramic fiber filter element, and a terminal polymer membrane filter element. The filter cartridges closest to the cooling tank are connected to the first connecting pipe, and the multiple filter cartridges are connected to each other via the second connecting pipe. The top of the filter cartridges furthest from the cooling tank is fixed with the first pair of connecting pipes. Through this structure, the cooling tank effectively suppresses temperature rise during refueling, reducing safety risks caused by the easily elevated temperature of hydrogen during refueling. The three-stage filtration module reduces potential damage to components from contaminant particles in the hydrogen fuel, effectively extending the lifespan of critical components.

The utility model discloses a novel high-content inorganic matter steel-aluminum composite plate which comprises a face plate, a bottom plate and a mixed core layer, the mixed core layer is arranged between the face plate and the bottom plate, and the face plate, the bottom plate and the mixed core layer are formed by continuous compounding through macromolecule PE films to form a sandwich structure. And high-performance coatings are arranged on the upper surface of the panel and the lower surface of the bottom plate. The high-quality steel plate and the high-molecular PE film are combined, so that the strength and the peel strength of the composite plate are greatly improved, particularly under the condition of the same thickness, the strength of the composite plate is increased by more than 10% compared with that of a pure aluminum plate and a pure PE plate, and the safety and the durability of the composite plate in the fields of buildings and traffic are ensured; the mixed core material layer is mainly composed of light calcium carbonate, PE plastic and a nano material, so that the fireproof performance of the material is improved, the cost is effectively reduced, and the composite board has better competitiveness in the market; the sound absorption layer is arranged in the mixed core layer, so that the sound insulation performance of the composite board is remarkably improved.

The utility model relates to a high-strength low-gram-weight polyurethane composite board, which mainly solves the technical problems that the polyurethane composite board in the prior art is low in bending strength and easy to tear. According to the utility model, the problem is well solved by adopting the technical scheme that a first layer of non-woven fabric (1), a first layer of polymeric membrane (2), a second layer of polymeric membrane (3), a first layer of glass fiber thermoplastic plastic (4), polyurethane foam (5), a second layer of glass fiber thermoplastic plastic (6), a third layer of polymeric membrane (7) and a fourth layer of polymeric membrane (8) are sequentially arranged from top to bottom. The method can be used for production and application of polyurethane composite boards.

The present application relates to waterproofing membrane technical field, propose a kind of three base double-channel prefabricated bite lap waterproofing membrane with touch fastener, from bottom to top, in turn include anti-adhesive layer, first permeation reaction adhesive layer, first polymer film base layer, second permeation reaction adhesive layer, second polymer film base layer, third permeation reaction adhesive layer, third polymer film base layer, fourth permeation reaction adhesive layer, rough surface silk layer and hook face layer;The adhesive of first permeation reaction adhesive layer, second permeation reaction adhesive layer, third permeation reaction adhesive layer and fourth permeation reaction adhesive layer respectively independently includes following weight parts component raw materials: asphalt, softener, SBS, SIS, tackifier, rubber powder, filler, filler is composed of heavy calcium carbonate, magnesium stearate modified active calcium carbonate and hollow glass microsphere.By the above technical solution, the problem of poor fixing, low peel strength and heavy quality of waterproofing membrane in related art is solved.

The invention provides a separation system and process suitable for lithium battery wastewater, and a three-stage gradient negative pressure separation process is adopted, so that purification of the lithium battery wastewater and efficient recovery of lithium resources are realized step by step. Firstly, physical impurities such as suspended particles in the lithium battery wastewater are removed through negative pressure ultrafiltration, then high-valence metal ions are selectively intercepted through negative pressure nanofiltration, low-concentration Li < + > is preliminarily concentrated, in the third-stage negative pressure adsorption process, a crown ether grafted polymeric membrane with Li < + > specific recognition capacity is adopted, and the Li < + > specific recognition capacity is obtained. And the Li < + > in the monovalent ion coexisting feed liquid is accurately captured. The system effectively overcomes the problems of low mass transfer efficiency and weak separation selectivity of low-concentration Li < + > through the combined action of gradient negative pressure driving and the functional membrane assembly, finally realizes efficient separation of lithium resources in complex-component lithium battery wastewater, and provides key technical support for recycling of the lithium resources.

The application discloses a multifunctional moisture-absorbing and refrigeration fabric and a preparation method thereof. The multifunctional moisture-absorbing and refrigeration clothing comprises a super-hydrophobic MOF fabric and a super-absorbing film material. The super-hydrophobic MOF fabric is obtained by growing a metal organic framework ZIF-8 coating on a carboxylated cotton fabric surface in situ and then hydrophobizing. The super-absorbing film material is formed by mixing and solidifying a hygroscopic inorganic metal salt ethanolamine aqueous solution and a polystyrene sulfonic acid sodium solution. The high polymer film material with excellent moisture absorption performance is arranged between the multifunctional super-hydrophobic MOF fabric layers to form the multifunctional moisture-absorbing and refrigeration clothing with a double-sided one-way moisture-guiding sandwich structure. The multifunctional moisture-absorbing and refrigeration clothing is prepared under mild conditions, and the production process is simple and safe to operate. The super-absorbing material has strong renewability, and the refrigeration and cooling effect is remarkable. The multifunctional moisture-absorbing and refrigeration clothing can be widely applied to personnel who need to wear protective clothing to work in a high-temperature environment, such as firefighters, medical staff, armed police, soldiers and doll performers.

The invention discloses an efficient and uniform gas distribution stirring device and process for an electroplating bath. Relates to the technical field of metal surface treatment and electrochemical engineering and comprises a stirring device body, an air inlet is formed in one side of the stirring device body, a polymeric membrane is arranged on the stirring device body, a plurality of membrane holes are formed in the surface of the polymeric membrane, and a one-way flow control structure is arranged in the stirring device body. The inner space of the stirring device body is divided into an intra-cavity area and an intra-membrane area through the one-way flow control structure, the intra-cavity area is arranged to be a cavity from the air inlet to the one-way flow control structure, and the intra-membrane area is the space between the outlet of the one-way flow control structure and the membrane holes in the surface of the polymeric membrane. According to the efficient and uniform gas distribution stirring device and process for the electroplating bath, the efficient and uniform gas distribution stirring device is installed at the bottom of the electroplating bath, high-pressure gas is sprayed out from the tiny orifices to form microbubbles, the formed microbubbles can improve flow field distribution in the electroplating bath, uniform distribution of a solution in the electroplating bath is guaranteed, and the electroplating efficiency is improved.

This invention provides a composite three-dimensional electrode system that does not increase the salinity of the effluent from low-salinity electrolysis, belonging to the field of wastewater treatment technology. It includes a low-salinity electrochemical oxidation device body, an anode plate, a polymer membrane module, and a cathode plate. The low-salinity electrochemical oxidation device body is respectively provided with an inlet and an effluent system. A main reaction zone is located in the middle of the low-salinity electrochemical oxidation device body, and the polymer membrane module is located within the main reaction zone. The anode plate and cathode plate are respectively located at opposite ends of the low-salinity electrochemical oxidation device body, with the anode plate positioned near the inlet and the cathode plate positioned near the effluent system. The polymer membrane module is positioned between the anode plate and the cathode plate. This invention reduces effluent salinity and microbial toxicity by using a conductive reverse osmosis membrane bag to intercept electrolyte salts and oxidizing free radicals.

The invention belongs to the technical field of polymeric membrane preparation, and discloses a multi-layer co-extrusion preparation method of a high-barrier polymeric membrane, and the high-barrier polymeric membrane comprises a heat sealing layer, a bonding layer, a barrier layer, a bonding layer and an outer layer which are sequentially distributed from inside to outside; the multi-layer structure of the film is reasonably designed, the ethylene-acrylic acid copolymer is selected as the raw material of the bonding layer, the ethylene-acrylic acid copolymer has good compatibility with the polyethylene material of the heat sealing layer, the ethylene-vinyl alcohol copolymer of the blocking layer and the high-density polyethylene of the outer layer, the bonding force between the film layers can be effectively improved, and the bonding force between the film layers is improved. The layering and stripping phenomena of the finished film are avoided, and the stability of the barrier property is guaranteed.

The invention belongs to the technical field of polymeric membrane materials, and particularly relates to a high-pressure steam sterilization resistant ultrafiltration membrane and a preparation method thereof. The ultrafiltration membrane provided by the invention is prepared from the following raw materials in percentage by mass: 16 to 22 percent of polyether sulfone, 1 to 8 percent of polyethylene glycol, 0.5 to 10 percent of polyvinylpyrrolidone, 0.5 to 2 percent of chitosan, 0 to 15 percent of additive and the balance of solvent. By using the raw material formula and combining a specific spinning process and a specific post-treatment process, the microstructure of the prepared ultrafiltration membrane silk is modified, residues of an organic solvent are greatly reduced through cortex interception and reduction of increase of spongy pores, and the ultrafiltration membrane has the advantages of simple preparation process and low cost. The secondary dissolution of the organic solvent on the membrane filaments during high-temperature steam sterilization and the micropore collapse and expansion caused by the secondary dissolution are avoided.

The utility model relates to the technical field of natural gas treatment, in particular to nitrogen removal and purification equipment for heavy components of natural gas, which comprises a nitrogen removal kettle, a feed pipe is communicated with the top end of the nitrogen removal kettle, a discharge pipe is communicated with the bottom end of the nitrogen removal kettle, a limit ring is arranged in the middle of the inside of the nitrogen removal kettle, and the discharge pipe is communicated with the top end of the nitrogen removal kettle. A separation assembly is arranged in the limiting ring and comprises a limiting groove formed in the center of the limiting ring. According to the device, the mounting frame can be quickly fixed, the device is convenient to use, the polymeric membrane on the mounting frame can perform denitrification treatment on natural gas entering the denitrification kettle, the denitrification difficulty can be reduced, the denitrification efficiency can be improved, meanwhile, a user can conveniently take out the polymeric membrane on the mounting frame for replacement or cleaning, and the practicability is high. The selective passing ability of the polymeric membrane can be guaranteed, nitrogen separation is facilitated, the polymeric membrane can be fixed through cooperation of the limiting blocks and the limiting plates, the stability of the polymeric membrane can be guaranteed, and nitrogen separation is facilitated.

The application relates to a film-forming fluid loss additive, a preparation method thereof, a workover fluid and a workover method, and relates to the workover field. The film-forming fluid loss additive comprises an oil phase, an emulsifier, acrylamide, N-vinyl pyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid, hexadecyl dimethyl allyl ammonium chloride, water and an initiator. The workover fluid comprises water, a viscosity increasing agent, a plugging agent, an acid-soluble temporary plugging agent, an interface modifier, an anti-corrosion agent, a weighting agent and the aforementioned film-forming fluid loss additive. The film-forming fluid loss additive is provided, a polymer obtained through reverse emulsion polymerization of specific acrylamide, N-vinyl pyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid and hexadecyl dimethyl allyl ammonium chloride is massively adsorbed on the surface of a filter cake under the action of high temperature and high pressure to form a high-molecular polymer film with high toughness, and the reduction of the fluid loss is realized. The temperature resistance of the workover fluid is greater than or equal to 180 DEG C, the pressure plugging capacity of the workover fluid to a fractured core is greater than 10 MPa, and the permeability recovery value of the workover fluid is greater than or equal to 92%.

The application belongs to the field of electronic materials, and provides a kind of mechanically wear-resistant liquid metal particle-based conductive ink and its preparation method, the conductive ink includes: liquid metal particles, hot melt polymer particles and polymer solution;The polymer solution includes organic solvent and functional additives, and the liquid metal particles and hot melt polymer particles are dispersed in the polymer solution, and the polymer particles are not dissolved in the polymer solution.The application also provides a preparation method for preparing mechanically wear-resistant flexible stretchable conductor from the conductive ink.The application adds hot melt polymer particles in the ink, since the hot melt polymer is dispersed in the ink rather than directly dissolved in the ink, during the hot pressing process, a local protective network will be formed between the hot melt polymer particles rather than a dense polymer film, which can effectively improve the mechanical wear resistance of the flexible stretchable conductor, and at the same time, the excellent conductivity and stretchability of the flexible stretchable conductor will not be sacrificed.

The invention discloses a stiff and wide wear-resistant real silk or silk-containing fabric and a preparation process and application thereof, a smooth and continuous polymeric membrane protective layer containing amino acid is formed on the monofilament fiber surface of the real silk or silk-containing fabric, and the thickness of the polymeric membrane protective layer is 200-1000 nm. The polymeric membrane protective layer can enable common real silk or silk-containing fabric to be stiff, wide and wear-resistant, and can still keep better hand feeling and color after being washed by a machine for multiple times. Besides, the preparation process is simple, efficient and wide in applicability, the prepared durable, machine wash-resistant, stiff, wide and wear-resistant real silk or silk-containing fabric is used for spinning and weaving, and the fabric is applied to the fields of clothes, underwear, home textiles and the like.

A working fluid cassette for an intravascular heat exchange catheter includes a frame holding two closely spaced, square polymeric membranes along the sides of which are disposed inlet and outlet tubes. Working fluid from the catheter is directed from the inlet tube between the membranes to the outlet tube. The cassette is closely received between two refrigerant cold plates to exchange heat with the working fluid, which is circulated back to the catheter.