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406 results about "Silver particles" patented technology

Application of silver-bismuth tungstate catalyst in preparation of methanol from light-driven CO2

The invention provides application of a silver-bismuth tungstate catalyst in preparation of methanol from light-driven CO2, and belongs to the technical field of CO2 conversion and reduction. Bismuth tungstate nanosheets, silver salt and water are mixed, the size of silver particles is controlled by adjusting the pH value, the silver-bismuth tungstate catalyst is obtained, and the size of the silver particles is 20-50 nm; silver is evenly distributed on the surface of bismuth tungstate, the obtained silver-bismuth tungstate catalyst is large in specific surface area and high in light response capacity, the silver-bismuth tungstate catalyst can generate a large number of high-energy hot electrons during illumination, in-situ photo-thermal conversion is achieved, no external heat source is needed for heat supply, the photo-thermal effect is enhanced, CO2 conversion is promoted, and the methanol yield is increased.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY

Composite silver powder with surface nano-coating structure and preparation method of composite silver powder

The invention discloses composite silver powder with a surface nano-coating structure and a preparation method of the composite silver powder. The composite silver powder comprises a micron-sized spherical silver powder core and a nano-silver shell layer coating the surface of the core, and the nano-silver shell layer comprises nano-silver particles making contact with one another; the D50 particle size of the core body is 1-2 microns, and the particle size D50 of the nano-silver particles is 10-100 nm; the composite spherical silver powder with micron-sized silver coated with nano-silver is prepared through a liquid phase chemical reduction method, the D50 particle size of the composite spherical silver powder is 1.67-1.70 microns, the tap density can reach 5.94 g / cm < 3 >, the specific surface area can reach 0.47 m < 2 > / g, and compared with micron-sized spherical silver powder of a single structure, the conductive performance of the silver powder can be improved by 32%, and the sintering activity is higher.
Owner:WUHAN INSTITUTE OF MARINE ELECTRIC PROPULSION (THE 712TH RESEARCH INSTITUTE OF CHINA STATE SHIPBUILDING CORP LTD) +1

Composite material solar interface evaporation device and preparation method and application thereof

The invention provides a composite material solar interface evaporation device and a preparation method and application thereof. The solar interface evaporation device comprises a photo-thermal layer and a supporting layer, and a plurality of fluid transportation channels are formed in the supporting layer. The photo-thermal layer combines the carbon nano tube and the silver particles to generate an efficient photo-thermal conversion film, so that the photo-thermal conversion efficiency is improved; pVA is adopted as a curing film-forming agent, a PVA aqueous solution is firstly sprayed on the surface of the supporting layer through a laminated spraying method, then the photo-thermal layer is sprayed on the surface of the PVA film layer, and the photo-thermal layer is prevented from being stripped from the supporting layer; the supporting layer is of a hollow conical supporting structure prepared from PA12 through the selective laser sintering (SLS) 3D printing technology, and a capillary triangular tooth-shaped groove is designed to serve as a fluid conveying channel. The evaporation device achieves efficient photo-thermal energy utilization, high seawater evaporation rate and biological pollution resistance, has the advantages of being low in preparation cost, long in service life, environmentally friendly and the like, and has wide application prospects in the fields of seawater desalination and sewage treatment.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

Preparation method of coating slurry, silver-carbon negative plate, preparation method of silver-carbon negative plate and solid-state battery

The invention belongs to the technical field of batteries, and particularly relates to a preparation method of coating slurry, a silver-carbon negative electrode plate, a preparation method of the silver-carbon negative electrode plate and a solid-state battery. Compared with the prior art, by controlling the agglomeration degree of the silver material in the negative electrode active coating, silver and carbon particles can be uniformly dispersed, and on the basis of avoiding the generation of lithium dendrites, attachment sites and spaces of the silver particles on the carbon particles are increased, so that the safety performance and the electrical performance of the battery are improved.
Owner:CHINA AVIATION LITHIUM BATTERY RES INST CO LTD +1

Antibacterial impregnated paper and method of making same

The present application relates to the technical field of bacteriostatic impregnated paper preparation, and discloses a bacteriostatic impregnated paper and a preparation method thereof, wherein a melamine impregnated paper substrate is impregnated with an impregnating solution; a rate regulating coating is coated on the surface of the substrate, so that the release rate of the bacteriostatic component is regulated according to the change of environmental pH value; wherein the surface of the rate regulating coating is further coated with a nano-silver particle layer, and the components of the impregnating solution include the following raw materials in percentage by weight: tea tree oil 0.5-2%, cinnamaldehyde 1-3%, lemon essential oil 0.5-1%, ethanol 70-80% and water; the present application provides a multi-layer protection mechanism, which can not only effectively kill various bacteria and fungi, but also prolong the duration of the bacteriostatic effect; the presence of the nano-silver particle layer enhances the long-term bacteriostatic effect, and even after long-term use, the high-efficiency antibacterial performance can be maintained; the introduction of the pH-sensitive polymer coating enables the release rate of the bacteriostatic component to be automatically regulated according to the change of environmental pH value.
Owner:GUANGDONG FUMEI NEW MATERIAL TECH CO LTD

Perovskite solar cell, preparation method thereof and photovoltaic module

The invention provides a perovskite solar cell, a preparation method thereof and a photovoltaic module, and the perovskite solar cell comprises a substrate, a first carrier transmission layer, a perovskite absorption layer, a second carrier transmission layer and an electrode layer which are sequentially stacked. And a nano-silver particle layer is arranged between the first carrier transport layer and the perovskite absorption layer. According to the invention, the nano-silver particle layer is used as a crystal nucleus, so that the crystallization of the perovskite absorption layer is promoted, and the high-quality perovskite thin film with large grain size and low defect density is formed; in addition, the particle surface of the nano-silver particle layer can reflect sunlight, a light trapping structure is formed, and the utilization rate of light can be remarkably improved. In conclusion, the photoelectric property of the perovskite solar cell can be effectively improved, and the perovskite solar cell has a wide application prospect.
Owner:CHINT NEW ENERGY TECH CO LTD

Preparation method of silver-coated copper powder

The invention provides a preparation method of silver-coated copper powder, and belongs to the technical field of metal powder treatment. The used copper particle suspension contains a complexing agent, so that the activity of the copper particles can be reduced, the reaction rate of reduction coating can be reduced when a silver-ammonia complexing solution is added, and a compact silver layer slowly and uniformly grows on the surface of each copper particle; the reduction of the activity of the copper particles slows down the replacement reaction of silver ions and copper, and the situation that the coating surface is rough and loose due to the generation of overlarge silver particles is avoided; the silver grows slowly and compactly, so that the surface of the coated silver layer is smooth and compact on the basis of lower usage amount of the silver source; the preparation method is simple in process, low in silver content and low in production cost, and the coated silver layer is smooth and compact in surface.
Owner:福建富轩科技有限公司

Filter element, preparation method thereof and water purifying device

The invention relates to the technical field of water purifiers, in particular to a filter element, a preparation method of the filter element and a water purifying device.The filter element comprises a silica sand layer, an activated carbon adsorption layer and a modified nano-silver functional layer which are stacked in the water flow direction; wherein the modified nano-silver functional layer comprises nano-silver particles modified by antibacterial peptide-cyclodextrin. According to the filter element prepared through the method, a superfine and dispersed nano-silver particle system is constructed, the stability of nano-silver in the filter element system can be greatly enhanced, then the antibacterial activity and antibacterial broad-spectrum performance of the nano-silver are improved, meanwhile, efficient removal of heavy metal is achieved in an auxiliary mode, and the water purification efficiency of a water purification device is effectively and comprehensively improved.
Owner:SHENZHEN HUAKE COMM TECH CO LTD

A highly conductive MXene-based electromagnetic shielding composite film and a preparation method thereof

The application discloses a kind of high-conductivity MXene-based electromagnetic shielding composite films and preparation method thereof, belong to new material technical field.The preparation method includes the following steps: using in-situ HF etching method to prepare MXene dispersion liquid;With deionized water as solvent, silver nitrate solution is prepared by dissolving silver nitrate;The silver nitrate aqueous solution is added to MXene dispersion liquid, and Ag@MXene film is obtained by vacuum filtration method.The method uses silver ion in silver nitrate as oxidant to make it and titanium element in MXene occur redox reaction to generate silver particles, so as to prop up MXene sheet layer and reduce the resistance caused by adhesion between sheet layers and increase the conductive path in MXene, so as to increase the conductivity of MXene;The composite film not only has excellent conductivity, electromagnetic shielding performance and is easy to form processing;The conductivity of the composite film can reach 3120S / cm, and the electromagnetic shielding performance can reach 68.5dB.
Owner:SHAANXI UNIV OF SCI & TECH

Preparation process of antibacterial fiber

The invention relates to the field of textiles, and particularly discloses a preparation process of antibacterial fibers, which comprises the following steps: S1, respectively drying and preparing polymer slices and an antibacterial agent; s2, performing melt spinning on the polymer slices and an antibacterial agent, performing air cooling, and then performing traction and winding to obtain antibacterial fibers; wherein the antibacterial agent is prepared by mixing dodecyl trimethyl ammonium chloride, polyvinylpyrrolidone and core-shell type antibacterial particles according to the mass ratio of (0.4-0.5): (0.1-0.2): 1, the core-shell type antibacterial particles are prepared by loading nano-zinc oxide and nano-silver particles on intercalation modified montmorillonite and then forming a silicon dioxide coating layer through a sol-gel method, and the core-shell type antibacterial particles are prepared from the silicon dioxide coating layer through a sol-gel method. And carrying out spray drying to obtain the core-shell antibacterial particles. The preparation method has the characteristic of improving the antibacterial durability and uniformity of the antibacterial fiber.
Owner:HANGZHOU HUIFENG CHEM FIBRE CO LTD

Base metal main grid slurry, preparation method thereof and photovoltaic cell

The invention provides base metal main grid slurry, a preparation method thereof and a photovoltaic cell. The base metal main grid slurry comprises 3-8 parts by mass of nickel powder, and the surface of the nickel powder is coated with a modified component; 0.5-1 part by mass of first glass powder; 0.5 to 1.5 parts by mass of second glass powder; 13-16 parts by mass of an organic phase; 0.2 to 0.5 part by mass of an organic auxiliary agent; 15-25 parts by mass of a first silver powder; and 45-60 parts by mass of a second silver powder. The base metal nickel is used for replacing part of silver powder, the wettability is improved through surface coating, meanwhile, glass elements are optimized, the glass softening point is reduced, the paste can be sintered at the low temperature, close combination of silver particles is facilitated, and the density and conductivity of a conducting layer are improved. According to the technical scheme, the sintering is compact, the conductivity is slightly higher than that of pure silver paste, and the effects that the efficiency is equal to that of the silver paste and the tension is slightly lower than that of the pure silver paste are achieved.
Owner:NANTONG AISHENG NEW ENERGY TECH CO LTD

Wear-resistant environment-friendly conductive silver paste and preparation method thereof

The invention relates to the technical field of electronic paste, and discloses wear-resistant environment-friendly conductive silver paste and a preparation method thereof.The preparation method comprises the following steps of silver powder pretreatment, environment-friendly resin system preparation, conductive reinforced phase modification, paste compounding and curing treatment; according to the preparation method, a compound system of the flaky silver powder and the spherical silver powder forms a high-activity surface after plasma activation, chemical bonding is formed through the ring-opening cross-linking reaction with the bio-based epoxy resin, a three-dimensional conductive network is constructed by means of the vertical bridging effect of the nano-zinc oxide whiskers, and the electron tunneling effect among silver particles is enhanced; and meanwhile, the silicon carbide nanoparticles are embedded into a resin matrix to form a hard supporting point, a chemical bonding layer established by a silane coupling agent at an interface bonding position inhibits microstress concentration, the mechanical stability and deformation resistance of a conductive path are synergistically improved, and the technical bottleneck that a conductive network is prone to fracture under the working condition of high-frequency friction of traditional silver paste is broken through.
Owner:SHENZHEN PROWAY TECH CO LTD

High-activity high-dispersity submicron silver particles and preparation method thereof

The invention provides high-activity and high-dispersity submicron silver particles and a preparation method thereof, and belongs to the technical field of submicron silver. Comprising the following steps: (1) preparing a precursor solution; (2) preparing a reducing agent solution; (3) a reduction reaction stage; (4) a curing stage; (5) carrying out solid-liquid separation and cleaning; and (6) drying and collecting. The invention provides a novel method for preparing high-activity nano / submicron hierarchical structure silver particles under mild conditions, and the effects of uniform particle size, clear structural hierarchy and low-temperature high-density sintering are achieved by controlling precursor reaction and particle self-assembly behaviors.
Owner:CENT SOUTH UNIV

A low temperature cure paste with enhanced temperature cycle resistance and a method of making the same

The application discloses a kind of low-temperature curing paste of enhanced temperature cycle resistance and preparation method thereof, it is related to chip packaging field, low-temperature curing paste includes by mass percentage: 1-20% thermoplastic resin particles, 0.1-5.0% thermosetting resin, 0.1-1.5% solvent and remaining silver powder;Silver powder includes by mass percentage: 10-45% spherical nanometer silver particles a, 1-5% spherical nanometer silver particles b and remaining micron silver flake;The particle size of micron silver flake is 1-10 μm, the particle size of spherical nanometer silver particles a is 50-100 nm, the particle size of spherical nanometer silver particles b is 5-50 nm, the particle size of thermoplastic resin particles is 1-15 μm.The paste of component allocation of the present application by thermoplastic resin particles and silver powder etc., when joint structure formed by paste solidification experiences temperature cycle, thermoplastic resin particles can melt at high temperature and dynamically fill the pore between silver powder particles, to hinder the migration path of silver atom, inhibit the metal grain growth caused by temperature fluctuation, reduce the internal stress generated by grain coarsening.
Owner:SHENZHEN XINYUAN NEW MATERIALS CO LTD

Functionalized glass for sers detection and method of making the same

The application relates to a functionalized glass for SERS detection and a preparation method thereof, characterized by the following steps: a. tetraethyl orthosilicate and oxalic acid are mixed into a 0.02-0.10 moL / L sol in anhydrous ethanol according to a molar ratio of 1:2-5, a stabilizer with a volume of 5-50% is added, and then the mixture is stirred and transferred into a four-necked flask; b. after being heated and stirred for 12-16 hours, an anhydrous ethanol emulsion of polystyrene small balls with a mass fraction of 5-20% and a volume of 6-18% is added; c. an anhydrous ethanol solution of a surfactant P123 with a total mass of 2-8% and a weight concentration of 3-8% is added, and then the mixture is stirred and aged; d. a wet film is prepared on a glass substrate, and then the wet film is dried and kept warm; (2) a nano-silver particle dispersion liquid with a concentration of 5-25 mg / mL is prepared; and (3) the glass substrate prepared in the step d is coated with the nano-silver particle dispersion liquid and dried. The application has the advantages of simple process and low cost; the surface of the porous structure silica nano-particles has a large number of nanoscale gap structures, which is beneficial to obtaining an enhanced silver nano-particle surface plasmon resonance electromagnetic field, and greatly enhances the Raman signal of the adsorbed molecules.
Owner:CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO LTD

Preparation method of high-conductivity composite graphene, conductive ink and application thereof

The invention provides a preparation method of high-conductivity composite graphene, conductive ink and application thereof, and the preparation method comprises the following steps: dispersing graphene into a solvent to obtain a graphene dispersion liquid; adding a silane coupling agent with an amino group into the graphene dispersion liquid, and reacting to obtain aminated graphene; and adding a first dispersing agent into the aminated graphene, adding silver powder after uniform dispersion, and grinding to form an Ag-N coordinate bond between the silver powder and the aminated graphene, thereby obtaining the high-conductivity composite graphene. In the preparation method of the high-conductivity composite graphene provided by the invention, a silane coupling agent with an amino group is added into a graphene dispersion liquid, amination modification is completed through a condensation reaction with a hydroxyl group on the surface of the graphene, silver powder and the amino group of the graphene form an Ag-N coordinate bond, so that silver particles are completely coated with the graphene, a continuous C-Ag-C conductive network is constructed, and the high-conductivity composite graphene is obtained. According to the network, path breakpoints are reduced, interface contact resistance is reduced, charge transmission efficiency is improved, conductivity reduction after graphene compounding is effectively inhibited, and high conductivity and high heat resistance are achieved.
Owner:RESONANCE NEW MATERIALS (SUZHOU) CO LTD

Spherical silver powder, method for producing spherical silver powder, and conductive paste

The purpose of the present invention is to provide a spherical silver powder that can impart an excellent low-temperature sinterability to conductive pastes. A first embodiment of the present invention is a spherical silver powder that contains silver particles that have closed voids in the particle interior, wherein: when at least 10 fields of view of a silver particle cross section are observed at 100,000X, the number per the cross-sectional area of voids A having a Heywood diameter of at least 4 nm is at least 70 / μm2 and not more than 500 / μm2, and the ratio, to the number of voids A per the cross-sectional area, of the number per the cross-sectional area of voids a having a Heywood diameter of at least 4 nm and less than 30 nm is at least 90%.
Owner:DOWA ELECTRONICS MATERIALS CO LTD

Fruit and vegetable packaging film based on MOF material and preparation method thereof

The application relates to a fruit and vegetable packaging film based on a MOF material, which comprises the following components: polyvinyl alcohol, modified polylactic acid, Ag@MOF nanoparticles, plant extract, glycerol, and a solvent; wherein the modified polylactic acid is obtained by reaction of acrylamide, double-bond polylactic acid, vinyl acetate and KH570 modified nano-silver particles. Through the synergistic effect of the modified polylactic acid and components such as polyvinyl alcohol, Ag@MOF nanoparticles and plant extract, the mechanical properties, compatibility, antibacterial property, barrier property and preservation performance of the packaging film are significantly improved, the degradability of the material is ensured, and the application has important significance for promoting the development of the fruit and vegetable preservation packaging industry.
Owner:JIANGMEN POLYTECHNIC

A nickel-cobalt bimetallic enzyme-free glucose sensor material, a preparation method thereof and a sensor

The application discloses a kind of nickel-cobalt bimetallic enzyme-free glucose sensor materials and preparation method thereof, sensor;The nickel-cobalt bimetallic enzyme-free glucose sensor material is the composite material that nickel-cobalt bimetallic organic framework material is modified by nano silver particle;Wherein, the mole ratio of nickel-cobalt bimetallic organic framework material and nano silver particle substance in the composite material is 0.1-1.0:1;The sensor material is the composite material that nano silver particle is modified to nickel-cobalt bimetallic organic framework material, it not only has the advantage that bimetallic organic framework material specific surface area is big, more under the modification of silver particle, make nickel-cobalt bimetallic organic framework material have more excellent conductivity, so as to be used as enzyme-free glucose sensor material, sensor has higher sensitivity and reaction speed, so as to be more conducive to the large-scale application of enzyme-free glucose sensor.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING

High-thermal-conductivity and high-filling-density elargol, preparation method thereof and application of elargol in semiconductor packaging

The invention relates to the field of sealant materials, in particular to a high-thermal-conductivity and high-filling-density elargol and a preparation method thereof. The high-thermal-conductivity and high-filling-density elargol is prepared from the following raw materials: silver particles, carrier resin, a curing agent, a coupling agent, a diluent, a defoaming agent, a flatting agent, a polymer additive and the like. The high-thermal-conductivity and high-filling elargol prepared by the invention has the most remarkable beneficial effects that the contradiction between high silver content and excellent processability is successfully solved, excellent balance of comprehensive performance is realized, and the high-thermal-conductivity and high-filling elargol can show good flowability and silk-screen printing trafficability in a dispensing or printing process; the problems of sagging, wire flying or hole blocking and the like are effectively avoided, and the processing efficiency and the yield of a semiconductor packaging process are greatly improved.
Owner:SHENZHEN XINYUAN NEW MATERIALS CO LTD

Conductive paste for aluminum nitride matrix and preparation method thereof

The invention belongs to the technical field of conductive paste, and relates to conductive paste for an aluminum nitride matrix and a preparation method of the conductive paste. The conductive paste comprises the following components in percentage by mass: 1%-5% of glass powder, 15%-20% of an organic carrier and the balance of mixed silver powder. Wherein the glass powder contains 1%-4% of CeO2 and is used for enhancing the stability of a glass phase and interface bonding; the mixed silver powder is formed by mixing silver powder and 0.5%-2% of NiO in advance and used for forming a diffusion barrier layer on a silver particle interface and refining a silver crystal phase. The invention also provides a preparation method of the conductive paste, which comprises the following steps: uniformly grinding and mixing the mixed silver powder and the glass powder, adding the organic carrier, and grinding and mixing to obtain a mixture; and rolling and grinding the mixture to prepare the conductive paste.
Owner:XIAN TENGXING ELECTRONIC TECH CO LTD

Preparation method of silver-coated copper slurry suitable for TOPCON

The invention discloses a preparation method of silver-coated copper slurry suitable for TOPCON, and relates to the technical field of battery preparation, and the preparation method comprises the following steps: preparing silver-coated copper particles; silver-coated copper particles are mixed with a glass system, an organic system and nanoscale silver particles according to the mass ratio to prepare silver-coated copper slurry; the silver-coated copper particles sequentially comprise a copper core, an aluminum oxide protection layer, a nickel layer and a nano-silver coating layer from inside to outside, and the silver-coated copper slurry is formed by mixing the silver-coated copper particles, a glass system, an organic system and nano-scale silver particles according to a mass ratio. The glass system is composed of bismuth oxide-boric oxide composite glass, zinc oxide-silicon oxide composite glass and tellurium oxide glass. According to the invention, the silver-coated copper particles with a multi-layer coating structure are used as a main conductive phase and are combined with the nano-silver particles, so that the conductive performance is ensured, the raw material cost of the paste is reduced, the cost pressure is dealt with, the problems of copper core oxidation and ion migration are solved, and the paste can be kept stable in a high-temperature and high-humidity environment.
Owner:YIBIN YINGFA DEKUN TECH CO LTD

Spherical silver powder preparation method based on dual-reducing-agent cooperation and organic-inorganic composite dispersion system

The invention relates to a spherical silver powder preparation method based on dual-reducing-agent cooperation and an organic-inorganic composite dispersion system, and belongs to the technical field of conductive metal powder and a preparation method thereof. The method comprises the steps that S1, a silver salt solution is prepared, wherein silver nitrate is dissolved in deionized water, and a solution with the concentration being 100-200 g / L is prepared; adding a composite dispersant into the solution to obtain a silver salt solution; s2, preparing a synergistic reducing agent solution; s3, graded reduction reaction; and S4, post-treatment is conducted, specifically, after the reaction is completed, solid-liquid separation is conducted, obtained silver powder precipitates are sequentially subjected to washing and vacuum drying, and then the spherical silver powder is obtained. According to the preparation method, a regulation and control system with a'reaction-dispersion 'dual synergistic effect is constructed to control the nucleation and growth process of silver particles, so that the spherical silver powder which is narrow in particle size distribution and regular in morphology is prepared.
Owner:YUNNAN CHIHONG RESOURCE COMPREHENSIVE UTILIZATION CO LTD

Paste-like silver particle composition, method for manufacturing the paste-like silver particle composition, method for manufacturing a metal member assembly, and metal member assembly

The present invention provides a paste-like silver particle composition that suppresses the deterioration of adhesive performance due to changes over time after the preparation of the silver particle composition. [Solution] The paste-like silver particle composition comprises first silver particles with an average particle size of 2 to 5 μm and coated with an organic substance having polar groups, second silver particles with an average particle size of 0.5 to 1 μm and coated with an organic substance having polar groups, third silver particles with an average particle size of 50 nm to 300 nm and coated with an organic substance having polar groups, a volatile dispersion medium, a diamine compound, and a fatty acid having 6 to 10 carbon atoms, wherein the diamine compound is present in an amount of 0.5 to 5% by weight of the total weight, and the fatty acid is present in an amount of 0.5 to 2% by weight of the total weight.
Owner:NIHON HANDA

Silver colloid, preparation method thereof and semiconductor device

The invention belongs to the technical field of electronic packaging materials, and particularly relates to silver colloid, a preparation method thereof and a semiconductor device. The silver colloid comprises silver particles, epoxy resin, a curing agent and a coupling agent; wherein the curing agent comprises phenolic resin and a thiol curing agent, and the thiol curing agent contains at least two sulfydryl groups. The sulfydryl of the thiol curing agent reacts with part of epoxy groups before phenolic hydroxyl groups of phenolic resin at a low temperature, a silver powder network is preliminarily stabilized through the bonding effect of the sulfydryl and the silver powder, and an initial cross-linked network with toughness is formed. After the temperature is continuously increased, the phenolic resin reacts with the remaining epoxy groups, and a main body curing reaction is started to construct a high-strength and high-crosslinking-density three-dimensional network, so that the structural strength and the heat resistance are improved. And the compact three-dimensional network can more stably wrap the silver powder particles stacked at high density, so that the quality of a conductive path under high silver content is ensured, and the mechanical bonding strength of an adhesive layer is remarkably improved.
Owner:SHENZHEN XINYUAN NEW MATERIALS CO LTD

Electrolytic hydrogen production solid repelling cathode and modification method and application thereof

The invention provides an electrolytic hydrogen production solid repelling cathode and a modification method and application thereof, and the modification method comprises the following steps: pretreating an HER electrode, and removing organic matters and an oxide layer on the surface of the HER electrode to obtain the pretreated HER electrode; and the pretreated HER electrode is soaked in an electroplating solution or a chemical plating solution containing silver ions for electroplating or chemical plating, silver particles are deposited on the surface of the HER electrode, and the modified electrolysis hydrogen production solid repelling cathode is obtained.
Owner:ZHEJIANG UNIV OF TECH +1

Anti-collision corner for medical cart

The invention relates to an anti-collision corner for a medical cart, and belongs to the technical field of medical instruments, the anti-collision corner comprises an anti-collision shell, the anti-collision shell is of an integrally formed structure, a buffer energy-absorbing unit is arranged in the anti-collision shell, and the buffer energy-absorbing unit comprises a first-stage energy-absorbing part, a second-stage energy-absorbing part and a third-stage energy-absorbing part; the first-stage energy absorption part is used for absorbing impact energy at the initial stage of impact; the second-stage energy absorption part is used for continuously absorbing the impact energy in the middle stage of impact after the first-stage energy absorption part absorbs the impact energy; the third-stage energy absorption part is used for continuously absorbing the impact energy in the later stage of impact after the second-stage energy absorption part absorbs the impact energy; the outer surface of the anti-collision shell is a continuous smooth curved surface, the anti-collision shell is made of TPE material composite nano-silver particles, and the anti-collision shell is provided with a surface hydrophobic layer; the anti-collision corner has the advantages that the buffering performance of the anti-collision corner is improved, and the self-cleaning and antibacterial effects of the anti-collision corner are achieved.
Owner:JIANGSU XINHUAHENG PRECISION MACHINERY GRP CO LTD

Bio-based cool fabric and preparation method thereof

PendingCN121381253AAlginate artificial filamentsWoven fabricsItaconic acidBoron nitride
The invention discloses a bio-based cool fabric and a preparation method thereof, and relates to the technical field of functional textile materials. When the bio-based cool fabric is prepared, firstly, furandicarboxylic acid, octafluoro-1, 6-hexanediol and itaconic acid are subjected to copolycondensation and then react with gamma-mercaptopropyltrimethoxysilane modified boron nitride, melt spinning is conducted, and heat conduction type hydrophobic fibers are prepared; secondly, extruding the sodium alginate spinning solution containing silver nitrate into a calcium chloride composite solution containing ascorbic acid, and performing in-situ reduction to obtain nano-silver particle loaded alginate fibers; and finally, performing rib-type composite weaving on the heat-conducting hydrophobic fibers and the nano-silver particle loaded alginate fibers according to a specific mass ratio to obtain the bio-based cool fabric. The bio-based cool fabric prepared by the invention has excellent heat-conducting property, moisture-conducting property and antibacterial property.
Owner:NANTONG TONGZHOU LEIXIANGLI TEXTILE CO LTD

A new antibacterial material with a wire-braided appearance, an article thereof, and a preparation method thereof

The application belongs to the technical field of medical packaging and decorative packaging, and particularly discloses a novel antibacterial material with a wire-weaving appearance, a product thereof and a preparation method of the antibacterial material. The antibacterial material comprises a woven mesh cloth with through mesh holes which is woven by resin filaments; the upper and lower surfaces and the periphery of the woven mesh cloth are covered with a metal plating layer; a flow-casting resin layer containing nano-silver particles is arranged below the woven mesh cloth, the flow-casting resin layer comprises an outer cover part and an inner embedding part which fills the mesh holes, and the filling depth of the inner embedding part does not exceed the height of the mesh holes; a transparent ink layer is arranged above the woven mesh cloth, and the surface of the transparent ink layer is incompletely covered with a UV coating layer; and a primer layer is arranged on the lower surface of the flow-casting resin layer. The antibacterial material has the advantages of long antibacterial life, low cost, safety and beauty, good water permeability and resistance to yellowing, and has a wide application prospect.
Owner:JIAXING RUIGUAN PACKING MATERIAL CO LTD