550 results about "Silver nanowires" patented technology

The invention relates to a preparation method of a silver nanowire based on a phenolic compound and the silver nanowire, and the preparation method comprises the following steps: 1, respectively dissolving polyvinylpyrrolidone, small molecular phenolic acid, halide, a silver source and the phenolic compound in deionized water to obtain respective solutions; 2, sequentially adding a polyvinylpyrrolidone solution, a small molecular phenolic acid solution, a halide solution and a silver source solution, and stirring to obtain a reaction solution A; step 3, adding a phenolic compound solution into the reaction solution A to obtain a reaction system B, and stirring and reacting to obtain a mixed solution C containing silver nanowires; fourthly, the mixed solution C containing the silver nanowires is sequentially centrifuged and washed, and then the silver nanowires are prepared; the diameter of the silver nanowire is 20-150 nm, and the length of the silver nanowire is 5-100 [mu] m. Therefore, according to the design, water is adopted as a solvent to synthesize the silver nanowire, the reaction temperature is low, and the reaction speed is high.

The invention belongs to the field of conductive films, and discloses a preparation method of a conductive film based on PEDOT: PSS and silver nanowires, and the preparation method specifically comprises the following steps: after carrying out surface hydroxylation treatment on the silver nanowires AgNWs, under the action of a silane coupling agent 3-(trimethoxymethylsilyl) propyl methacrylate TMSPMA, mixing the silver nanowires AgNWs with PEDOT: PSS to prepare a PEDOT: PSS / AgNWs base solution; the preparation method comprises the following steps: adjusting the pH value of a base solution to be nearly neutral through sodium citrate, then mixing the base solution with a PEA emulsion, carrying out spin coating to form a film, and finally, carrying out ultrafast laser treatment to improve the conductivity so as to obtain the conductive film based on PEDOT: PSS and silver nanowires. The conductive film provided by the invention has high conductivity (gt; 1200 S / cm), good stability and excellent mechanical properties, and is suitable for a flexible electronic device and stable work in a certain humidity environment.

The invention belongs to the technical field of flexible sensing, and particularly relates to a preparation method of an implantable flexible sensor and a bladder urine content wireless monitoring system based on the sensor and a radio frequency mechanism. Wherein the performance of the sensor is improved by utilizing a microporous structure, n-octane is added into TPU to form a porous dielectric layer through a method of different temperatures and different liquid solubility, and the second dielectric layer is added into TPU by using a core-shell structure of silver nanowires and titanium dioxide, so that the anti-interference performance of the pressure-volume sensor is remarkably improved. In addition, the overall structure of the sensor is designed into a semi-bent snake-shaped structure, and the sensor has good pressure-volume performance, sensitivity, restorability and anti-interference performance. The elastic silicone rubber is used for packaging, so that the biocompatibility and practicability of the material are improved, and unstable factors such as body fluid invasion are eliminated. Meanwhile, a wireless sensing system based on a radio frequency mechanism is designed and manufactured, the urine content of the bladder can be wirelessly known from the outside, and related work such as medical care can be helped.

Composite materials with noble metal coated silver nanowires loaded into polymer are described. The composite materials may have resistivities of no more than about 100 Ohm-cm, or from about 100 Ohm-cm to about 1×1011 Ohm-cm depending on the amount of noble metal coated silver nanowires loaded into the polymer. The noble metal coated silver nanowires may be platinum coated silver nanowires. Metal particulates such as silver flakes or silver particles may be added to the composite materials in order to obtain desired properties. Composite precursor compositions and methods for preparing the composite materials are described.

The invention relates to the technical field of aerogel, in particular to flexible flame-retardant aerogel and a preparation method thereof.The flexible flame-retardant aerogel is prepared from modified graphene, modified polyvinyl alcohol, silver nanowires, phytic acid and epoxy resin E-51; the furan group is introduced into the aerogel through the modified graphene, the furan group and the maleimide group are subjected to a D-A reaction, an adhesive is prevented from being used when the aerogel is bonded with a screen backboard, the D-A reaction is reversible, and lossless reworking can be realized. PVA and epoxy resin E-51 are added together, so that the heat resistance and mechanical strength of the material are improved. PVA is grafted with a large-steric-hindrance amine group, weak interaction with a furan group is generated, side reaction with an epoxy group of epoxy resin E-51 is avoided, and when aerogel is bonded to an OLED screen backboard, the protective layer is reversibly released, so that D-A reaction can be smoothly carried out. The hydrophobic treatment of the modified graphene and the modified grafting of the polyethylene to the mPEG can effectively improve the agglomeration of the modified graphene and ensure the uniform dispersion of the modified graphene.

According to the flexible sensor for synchronously detecting dynamic and static states and internal conditions of human muscles, dynamic and static force cooperative detection and ultrasonic detection are integrated, and by using the elastic piezoelectric body containing the conductive filler, when the sensor is subjected to compression or stretching deformation, the resistivity and capacitance change greatly. By utilizing the piezoelectric effect and inverse piezoelectric effect of the material, an ultrasonic sensor is compatible with a piezoelectric capacitance type integrated sensor. Flexible electrodes (such as silver nanowires and graphene) and biocompatibility packaging (such as PDMS) are adopted. A time division strategy is adopted, and dynamic and static pressure detection and ultrasonic detection are alternately executed. Based on the technical scheme of the invention, the requirement of realizing accurate monitoring of dynamic force and static force in a full frequency range by using a single flexible sensor is met; the volume and weight of the device are greatly reduced, so that the sensor has good flexibility and wearing comfort, is suitable for physiological monitoring, avoids signal crosstalk and ensures data accuracy.

The invention belongs to the technical field of folding screens, and discloses an optical conductive film for a folding screen and a preparation method thereof.The optical conductive film for the folding screen comprises a composite base material, an interface transition layer, a gradient refractive index optical adjustment layer, a hybrid conductive layer and a scratch-resistant wear-resistant layer which are sequentially stacked from bottom to top; the composite base material is a blending modification layer of polyimide and transparent polyamide, the hybrid conductive layer is formed by compounding silver nanowires, a graphene sheet layer and PEDOT: PSS according to a preset proportion, and the refractive index of the gradient refractive index optical adjustment layer is gradually reduced in the direction away from the composite base material. And the difference value between the refractive index of the gradient refractive index optical adjustment layer and the refractive index of the hybrid conductive layer is not greater than 0.05. The mechanical stability, the light transmission efficiency, the conductive stability, the scratch resistance and the wear resistance of the film are improved, the performance is stable after folding circulation, the use requirements of a folding screen are met, and application in different scenes can be met.

The invention discloses a multi-layer composite shielding PVC wire harness adhesive tape and a preparation method thereof, and relates to the technical field of PVC wire harness adhesive tape, the multi-layer composite shielding PVC wire harness adhesive tape comprises a base material layer, an adhesive layer and a stripping layer, the upper end of the base material layer is provided with a directional electromagnetic shielding layer, the upper end of the directional electromagnetic shielding layer is provided with an aerogel buffer layer, and the upper end of the aerogel buffer layer is provided with an adhesive layer. The directional electromagnetic shielding layer is formed by compounding MXene nanosheets and silver nanowires according to the mass ratio of (1: 0.3)-(1: 1). Polyimide fibers are embedded into pores of the silicon dioxide aerogel in a three-dimensional network structure, so that high buffering property and heat insulation property are realized, the problems that polyurethane foam is poor in heat insulation property and is easy to soften and lose efficacy in a high-temperature environment are solved, and the polyurethane foam is favorably used in an extreme environment and keeps certain stability.

The invention belongs to the technical field of nanometer materials, and designs an ultra-long silver nanowire and a preparation method and application thereof.The raw materials of the preparation method comprise a reducing agent, a solvent, an etching agent and a passivator, a hydrothermal method is adopted, the reducing agent is one or more of glutaraldehyde, butanedialdehyde, adipaldehyde, heptanedialdehyde and octanedialdehyde, the solvent is water, and the etching agent is an organic solvent; the etching agent is soluble metal salt which contains chloride ions and does not contain iron ions; the maximum length of the prepared ultra-long silver nanowire is 185 to 786 m, and the length-diameter ratio of the prepared ultra-long silver nanowire is 1927 to 10077; according to the application, the ultra-long silver nanowire is used for preparing a flexible transparent conductive electrode. According to the method, the separation-free ultra-long silver nanowire can be prepared in a short time, the process is simple, the cost is low, and devices such as transparent conductive electrodes with high light transmittance can be prepared on the flexible substrate.

The invention belongs to the field of intelligent wearing, and discloses a multifunctional wearable composite fiber membrane and a preparation method and application thereof. The multifunctional wearable composite fiber membrane is of a sandwich structure, the upper layer is a fullerene hybridized phosphorene modified polyacrylonitrile membrane, the lower layer is a polyurethane membrane, and the middle layer is a silver nanowire layer. The preparation method comprises the following steps: firstly, preparing fullerene hybridized phosphorene nanosheets, dispersing the fullerene hybridized phosphorene nanosheets into a solvent to obtain fullerene hybridized phosphorene dispersion liquid, adding the fullerene hybridized phosphorene dispersion liquid into a polyacrylonitrile solution, stirring to obtain a fullerene hybridized phosphorene / polyacrylonitrile spinning solution, and carrying out electrostatic spinning to obtain the fullerene hybridized phosphorene modified polyacrylonitrile fiber membrane. And then rolling or spraying a silver nanowire layer, covering one side of the silver nanowire layer with a polyurethane fiber membrane, drying and pressing to obtain the composite material. The composite fiber membrane prepared by the invention has good mechanical properties, air permeability, one-way moisture conduction performance, antibacterial performance, heat dissipation performance, electromagnetic shielding performance and flame retardant performance, and has a wide application prospect in the field of flexible wearable intelligent equipment.

The invention relates to the technical field of new material detection, in particular to a touch screen production fault detection method based on data feedback, which comprises the following steps of: arranging a transmission spectrum detection device on a flexible touch screen roll-to-roll production line, and continuously monitoring a plurality of layers of films by adopting a U-shaped light path structure to obtain multi-wavelength transmission spectrum data; based on an optical absorption model of each thin film layer, chromatography decoupling operation is carried out on the multi-wavelength transmission spectrum data, and a target spectrum is separated; according to the film temperature monitored in real time, combining a preset material temperature optical constant database and setting a reference light path to carry out temperature compensation and baseline correction on the target spectrum; establishing a silver nanowire agglomeration spectrum model, performing second derivative calculation on the target spectrum after baseline correction, identifying spectrum characteristic peaks, and evaluating the agglomeration degree of the silver nanowires; and judging the degradation defect of the conductive network based on the agglomeration degree of the silver nanowires to obtain a defect detection result, and adjusting process parameters.

The invention relates to the technical field of flexible tension sensors, in particular to a preparation method and application of a visual flexible tension sensor, and the preparation method comprises the following steps: preparation of conductive cashmere yarn, preparation of visual cashmere yarn and assembly of the visual flexible tension sensor. The one-dimensional silver nanowires are in lap joint with the two-dimensional lamellas, the one-dimensional silver nanowires and the two-dimensional lamellas jointly construct the three-dimensional conductive network with the synergistic effect, compared with a traditional conductive coating, the gap between one-dimensional conductive networks is filled, resistance is reduced, the electrical performance is improved, falling and sliding of the two-dimensional conductive network are avoided, stability is improved, and the conductive coating has the advantages of being high in practicability and the like. Secondly, the tensile strain degree is displayed through color change of the surface of the flexible tension sensor, the tensile force borne by the flexible tension sensor is visually expressed through color change, and the flexible tension sensor can be applied to mechanical detection such as portable detection which does not need quantification and only needs qualitative comparison of the mechanical change degree.

The invention discloses low-silver-content composite conductive silver paste based on a three-dimensional conductive network and a preparation method, and relates to the technical field of composite conductive silver paste preparation, and the low-silver-content composite conductive silver paste comprises a low-silver-content conductive phase, an interface bonding layer, a support body and an organic carrier; and the conductive phase with low silver content comprises the following components: 25 wt%-30 wt% of silver-plated hollow glass beads and 12 wt%-18 wt% of a three-dimensional conductive network. According to the invention, through accurate proportioning of the conductive phase with low silver content, the use amount of silver is greatly reduced. The silver-plated hollow glass bead takes light glass as a core and an ultrathin silver layer as a conductive shell, so that the silver consumption is reduced by more than 60wt%; the three-dimensional conductive network adopts a synergistic structure of silver nanowire fragments and graphene composite fragments, and the high conductivity of graphene is utilized to replace part of silver materials, so that the dependency degree of silver is further reduced. The silver content of the silver paste is greatly reduced, the cost of raw materials is greatly reduced, and the economical efficiency of the silver paste in large-scale application scenes such as photovoltaic and electronic packaging is remarkably improved.

The invention discloses a carbon nanotube and silver nanowire co-loaded cotton fabric, a preparation method and application, a pretreated cotton fabric is placed in a silane coupling agent solution, and after soaking treatment, washing and drying are performed to obtain a modified cotton fabric; the preparation method comprises the following steps: acidizing carbon nanotubes, and dispersing the acidized carbon nanotubes in deionized water to obtain acidized carbon nanotube dispersion liquid; the preparation method comprises the following steps: mixing a reducing agent, ferric sulfate, silver nitrate, polyvinylpyrrolidone and water, heating to react, centrifuging, washing, and dispersing a product into deionized water to obtain AgNWs dispersion liquid; the modified cotton fabric is soaked in a CNTs / AgNWs dispersion liquid prepared from the acidified carbon nanotube dispersion liquid and the AgNWs dispersion liquid, and the modified cotton fabric is taken out and dried. The cotton fabric is modified through oxysilane, active groups are introduced to the surface of the fabric, and the binding force of the cotton fabric and a conductive material is enhanced. The surface of the fiber is coated with the carbon nanotubes, the silver nanowires are in lap joint to fill gaps, the carbon nanotubes and the silver nanowires form a continuous and complete conductive network on the surface of the cotton fabric, and the conductivity is improved.

The invention discloses a near-infrared light cured conductive adhesive and a preparation method thereof, and belongs to the field of micro-nano electronic packaging and semiconductor materials. The problems that an existing conductive adhesive is high in curing temperature, long in curing time and poor in curing effect are solved. Silver-coated copper powder and silver nanowires serve as conductive filler and are mixed with epoxy acrylate resin, a reactive diluent, a photoinitiator, a thermal initiator, a defoaming agent and a flatting agent, grinding, defoaming and near-infrared light curing are conducted, and the conductive adhesive is obtained. The thermal initiator and the photoinitiator are combined, the near-infrared light is adopted for irradiation, the high-energy density of the near-infrared light directly permeates into the conductive adhesive film layer, the conductive adhesive film layer is heated at the same time and is not absorbed by the substrate, rapid curing of the conductive adhesive can be achieved, and when the radiation power is 120-300 W, the radiation time is 30-600 s and the irradiation frequency is 1-10 times, the conductive adhesive can be rapidly cured. And the cured conductive adhesive is low in volume resistance and high in bonding strength.

The invention discloses a silver nanowire network film and a welding method, and relates to the technical field of nano material processing and flexible electronic device manufacturing, and the welding method comprises the following steps: taking a polyester film as a substrate, taking silver nanowires, and placing the silver nanowires in ethanol to prepare a silver nanowire dispersion liquid; spin-coating the silver nanowire dispersion liquid on a substrate, and drying to form a silver nanowire network electrode; a focused light scanning system is adopted to weld the silver nanowire film, a xenon lamp light source is adopted to form a light spot through focusing of a convex lens, an XY motor drives a platform to drive a silver nanowire network electrode to perform two-dimensional motion, and the light spot scans a to-be-welded area of the silver nanowire network electrode according to a preset path for welding; and naturally cooling to obtain the silver nanowire network film. Uniformity and stability of current conduction of the electrode network are guaranteed, and comprehensive and efficient node welding is achieved.

The invention belongs to the technical field of low-noise magnetic shielding, and particularly relates to a flexible high-temperature-resistant magnetic shielding film and a preparation method thereof.The preparation method comprises the steps that a PI double-sided tape is attached to one side of a glass slide, and a PTFE / PDMS film is attached to one side of the glass slide to serve as a substrate sprayed by a silver nanometer bundle net; preparing a silver nanowire solution, and spraying the silver nanowire solution on the PTFE / PDMS film by using a spray gun to obtain a silver nano bundle net; spin-coating, curing and transferring the silver nano bundle net to obtain a flexible substrate of the cured silver nano bundle net; according to the flexible high-temperature-resistant magnetic shielding thin film and the preparation method thereof, the characteristic that the silver nanometer bundle net has the electromagnetic shielding performance is utilized, soft magnetic thin films are sputtered on the two sides of the silver nanometer bundle net, the shielding effectiveness of a traditional single-layer shielding thin film is further improved, and the flexible high-temperature-resistant magnetic shielding thin film is obtained. The obtained thin film is light in weight and meets the flexible application requirement of the magnetic shielding thin film, the application space is complex and changeable, and the flexible shielding thin film is light in weight, good in flexibility and excellent in shielding performance.

The invention belongs to the technical field of organic functional materials and organic electronics, and particularly relates to a modified stretchable electrode and a preparation method and application thereof. Silver nanowire dispersion liquid is spin-coated on a substrate, an obtained silver nanowire film is patterned, the obtained patterned silver nanowire film is soaked in a modifier (a small molecule compound containing a group capable of being combined with silver and a hydrogen supply group) for modification, the upper portion of the obtained modified silver nanowire film is coated with an organic polymer solution, and after annealing, the silver nanowire film is obtained. And stripping from the substrate to obtain the modified stretchable electrode. Through the interaction between the modified and enhanced silver nanowire film and the organic polymer, the tensile property is improved, the situation that the sheet resistance of the modified stretchable electrode is increased due to breakage of the silver nanowires is avoided, and the modified stretchable electrode has high conductivity, high transparency and high fatigue resistance at the same time.

The invention belongs to the technical field of conductive ink, and particularly relates to conductive UV ink-jet ink containing silver nanowires and a preparation method of the conductive UV ink-jet ink. According to the preparation method, the carbon nanotubes are subjected to composite modification, silver loading is realized through a heating reduction method, photocuring performance is obtained by means of grafting of dopamine and acrylic acid, and the conductive UV ink-jet ink containing the silver nanowires is prepared by being matched with the modified silver nanowires for common use, so that the conductive UV ink-jet ink containing the silver nanowires is prepared on the basis of ensuring that the ink is dispersed stably and does not generate precipitates; and the conductivity is effectively improved.

Concentrated dispersions of silver nanowires are used to prepare qualitatively distinct silver structures with a range of properties. The concentrated dispersions can have a high weight percent of silver nanowires and can be formulated to be flowable liquids or non-flowing pastes. The concentrated dispersions can be stable with no visible settling over the course of a week, can have non-Newtonian rheology, and can be diluted to a desired weight percent of silver nanowires without detrimental effects on the uniformity of the dispersions. The concentrated dispersions can be formulated with or without polymers or pre-polymer components. The concentrated dispersions can be formulated with silver salts to adjust dispersion of the silver nanowires and to improve electrical conductivity of cured silver structures formed from the dispersions. Methods for forming the concentrated dispersions are described as are methods to form silver structures from the dispersions.

The invention discloses a multifunctional flexible transparent conductive film and a preparation method thereof, and belongs to the technical field of nanometer material science and engineering, the multifunctional flexible transparent conductive film based on Ti3C2Tx-MXene and silver nanowires comprises a polyethylene glycol terephthalate substrate layer and a conductive layer, the conductive layer sequentially comprises an MXene first auxiliary conductive layer, a silver nanowire main conductive layer and an MXene second auxiliary conductive layer from bottom to top; the preparation method of the conductive thin film comprises the following steps: S1, preparing a substrate layer: putting a polyethylene glycol terephthalate thin film into a polyvinylpyrrolidone aqueous solution, and stirring for 0.5-1 hour at 60-80 DEG C; and S2, sequentially spin-coating the prepared MXene, the silver nanowire and the MXene on a PET (Polyethylene Terephthalate) substrate to obtain the flexible transparent conductive thin film. The problems that in the prior art, due to the random stacking state of the silver nanowire network, the resistance of the conductive network is high, and the adhesiveness of the conductive material is poor are solved. The method has the advantages of good conductivity and stability.

The invention discloses a preparation method of an aramid nanofiber film-aerogel complex, and belongs to the technical field of high-performance composites.The preparation method comprises the steps that an aramid nanofiber film and aramid nanofiber film-based aerogel are compounded, filler such as boron nitride nanosheets and silver nanowires is introduced, the interface bonding force and the heat management capacity are optimized, and the thermal conductivity of the composite is improved; the complex with excellent impact resistance, heat dissipation performance and cold insulation / heat insulation performance is prepared; the problems that traditional aerogel is poor in structural stability and serious in heat accumulation are solved, and the aerogel can be widely applied to the fields of thermal protection, energy storage, electromagnetic shielding, flexible electronics and the like.

The application discloses a flexible strain sensor with high linearity and low hysteresis, a preparation method and application thereof, and belongs to the technical field of sensors. The composite sensitive material prepared by using an electric spray gun has high linearity and low hysteresis performance. The physical contact between silver nanowires and two-dimensional MXene nanosheets makes the sensor have high sensitivity in a tensile state. Meanwhile, the liquid metal particles as a structural framework have inherent room-temperature low-melting-point characteristics, so that the liquid metal particles are in a liquid state at room temperature, and the gap between the MXene nanosheets and the silver nanowires is reduced. The coordination bond formed between the MXene nanosheets and the liquid metal enhances the interface interaction between the MXene nanosheets and the liquid metal, and reduces energy dissipation. The uniform composite sensing network layer obtained based on a spray mixing technology has a uniform distance between the sensitive materials in the composite sensitive layer with the gradual increase of external stress; and the existence of the buckling structure strengthens the interaction between the sensitive materials. Therefore, the resistance has a linear relationship with the change of the stretching amount, that is, high linearity; and the flexible strain sensor has high sensitivity.

The invention discloses a state optimization method of a solid-sealed polar pole for a primary and secondary fusion circuit breaker. The invention aims to solve the problem of circuit breaker misoperation caused by a traditional fixed threshold criterion. According to the method, the temperature gradient, the mechanical vibration frequency, the strain distribution and the electric field intensity data of the solid-sealed polar pole are collected in real time through a multi-physics field coupling monitoring network, and the comprehensive degradation index (CDI) is constructed by combining spatial-temporal feature extraction of partial discharge signals. The feature weight is dynamically optimized by adopting an improved particle swarm algorithm, the degradation trend is predicted through a bidirectional long-short-term memory network (LSTM), and a dynamic early warning threshold value (DWT) and a critical threshold value (CWT) are generated. Efficient data processing and model iterative optimization are realized, and meanwhile, mechanical strain, electric field distortion and a discharge evolution path are visualized through a three-dimensional digital twin model. Actual measurement shows that the fault misjudgment rate is reduced to be lower than 5%, the early warning response time is shortened to be within 10 seconds, and the local discharge capacity is greatly reduced through the silver nanowire self-healing technology.

The application discloses a kind of composite flexible transparent electromagnetic shielding film, including substrate, conductive film layer, MXene layer, protective layer in turn;Conductive film layer, MXene layer is arranged with interval;Substrate is PET polyester film, conductive film layer is silver nanowire, MXene layer is two-dimensional sheet MXene with multilayer structure, and protective layer is made of polymethyl methacrylate.The application further discloses a kind of preparation method of composite flexible transparent electromagnetic shielding film and its application in electronic touch screen.The preparation condition of the application is simple, and operability is strong, by regulating the alternate coating layer of silver nanowire layer and MXene layer, the transmittance and shielding effectiveness of electromagnetic shielding film are adjusted, and the more the layer is, the transmittance and shielding effectiveness are gradually smaller.

This invention belongs to the field of silver nanowire spraying technology, and proposes a silver nanowire spraying device and method. A nozzle is installed at the top of the housing via a three-axis moving shaft, employing a multi-degree-of-freedom moving spraying method. Furthermore, a separate housing and air compressor are installed at the bottom of the housing. A raw material storage tank is installed on the housing, and a stirrer is installed on the raw material storage tank. The stirrer agitates the silver nanowire suspension in the raw material storage tank, resulting in a more uniform and stable output silver nanowire suspension. The separate installation of the housing and air compressor avoids the impact of air compressor and stirrer vibrations on the three-axis moving shaft and the heating substrate. Simultaneously, the heating substrate and the nearby heating fan ensure uniform heating of the substrate surface, improving the uniformity and stability of the silver nanowire suspension spraying on the substrate surface.

The invention discloses a silver nanowire and polymer composite transparent conductive film and a preparation method thereof, and belongs to the field of conductive films. According to the preparation method disclosed by the invention, hydroxylation treatment is performed on the surface of AgNWs through ultraviolet irradiation induction to generate a large number of-OH groups, and the-OH groups and sulfonic acid groups (-SO3H) in PEDOT: PSS form chemical bonding, so that the contact resistance between the AgNWs and the PEDOT: PSS is remarkably reduced, and a continuous and efficient conductive network is constructed. Meanwhile, the tight coating structure of hydroxylated AgNWs and PEDOT: PSS effectively inhibits oxidation and ion migration of the silver nanowires in a humid and hot environment, and the stability of the transparent conductive film is remarkably improved.

The invention relates to the technical field of printing ink, in particular to modified resin for composite printing ink and a preparation method of the modified resin. 12%-18% of a dynamic covalent bond type fluorosiloxane copolymer; 5%-10% of bio-based degradable polyester resin; 3%-6% of TiO2 (at) SiO2 nanoparticles with a core-shell structure; 0.5%-2% of a pH response color changing material; 2%-5% of temperature-sensitive shape memory microspheres; 0.1%-0.8% of a light-induced isomerization molecular switch; 1%-3% of a biomimetic mineralization enhancer; 0.8%-1.5% of a gradient dispersing aid; 0.8%-2% of a two-dimensional black phosphorus / silver nanowire heterostructure; 1%-3% of a polydopamine modified boron nitride nanosheet; 5%-15% of epoxy functionalized organic silicone oil; 1%-4% of a photoinitiator; 0.5%-2% of an antioxidant / uvioresistant absorbent; 1%-3% of ceramic micro powder; 5%-15% of a high-performance pigment; 0.5%-2% of an infrared reflective additive; 0.1%-0.5% of a molecular sieve drying agent; 0.5%-2% of a self-repairing microcapsule; 2%-4% of hyperbranched polysilsesquioxane; 1%-3% of an efficient ultraviolet screening agent; and the balance of solvent.

The present invention relates to the technical field of silver nanowire preparation, and specifically relates to a method for preparing silver nanowires by a soft template method, which comprises the following steps: adding tea polyphenols, lactose and a control agent into deionized water in sequence, ultrasonically mixing evenly, then adding silver nitrate thereto, and reacting under hydrothermal conditions to obtain a mother liquor containing silver nanowires, and obtaining silver nanowires after washing treatment. The method for preparing silver nanowires by the soft template method of the present invention uses lactose as a template agent and tea polyphenols as a reducing agent, and reduces silver ions by a hydrothermal method under the action of a control agent through a suitable ratio. The overall process flow is simple, easy to operate, the prepared silver nanowires have high purity, good uniformity, are easy to disperse, and have good application value.

The invention discloses a nanofiber reinforced polyformaldehyde composite material and a preparation method thereof. The nanofiber reinforced polyformaldehyde composite material comprises the following raw material components in percentage by mass: 55-74% of a polyformaldehyde matrix; 11%-19% of polyketone resin; 5%-10% of a sulfur-free vulcanized elastomer; 8%-15% of a modified compound; 1%-3% of a silver nanowire; the invention relates to the technical field of composite materials. According to the nanofiber reinforced polyformaldehyde composite material and the preparation method thereof, the compound fibers provide an adhesion carrier for the boron nitride nanosheets, the strength of the composite material is improved, a heat conduction network is formed, the composite material has good flame retardance and heat conductivity, the continuity of the heat conduction network is guaranteed in cooperation with the silver nanowires, and the heat dissipation capacity of the composite material is improved; by combining the sulfur-free vulcanized elastomer and the polyketone resin, the elasticity and toughness of the composite material are improved, the notch impact strength is improved, the nanofibers are oriented in an electric field orientation mode, and the tensile strength and bending strength of the composite material are further improved.