18results about How to "Improve interface adhesion" patented technology

This invention relates to the field of insulating materials for porous copper foil preparation, and particularly to an insulating material for porous copper foil preparation and its preparation method, as well as a method for preparing porous copper foil. The preparation method includes the following steps: perforating a cathode plate to obtain a cathode plate with multiple blind holes; filling the blind holes with an insulating material for porous copper foil preparation, and curing it to obtain a pretreated cathode plate; the raw materials for the insulating material are: resin, reactive diluent, thixotropic agent, leveling agent, polymerization inhibitor, and photoinitiator. The pretreated cathode plate is used as the cathode and placed in an electrolyte for electrodeposition to obtain porous copper foil. When preparing porous copper foil with the insulating material, the filling material in the blind holes can withstand more than 80 electroplating cycles without peeling off, indicating that the insulating material for porous copper foil preparation possesses excellent adhesion and electrolyte environment durability, enabling a single-filled cathode to support stable electrodeposition over an ultra-long period, significantly extending its effective service life.

The application provides a kind of chopped fiber reinforced flexible polymer thermal protection material by graphene oxide and aramid nanofiber hybrid modification and its preparation method and use, belongs to the field of advanced materials.Aiming at the problem that the modulus difference between fiber and flexible matrix is huge, the interface compatibility is poor, and the stress concentration is serious, by constructing the hybrid interface phase composed of graphene oxide and aramid nanofiber, the microstructure of the inert surface of the chopped fiber is improved, the multi-scale mechanical interlocking structure between the fiber and the flexible matrix is promoted, the modulus mismatch between the fiber and the rubber matrix is effectively relieved, and the uniform and efficient stress transfer in the interface area is realized.In the process of tensile deformation, dynamic load and high temperature ablation, the hybrid interface phase can keep the close interface bonding between the fiber and the flexible matrix, significantly improve the ablation and erosion resistance of the flexible composite material and the mechanical properties, especially the flexible ablation performance under high dynamic and deformation state, and has good application prospect.

The application discloses a passivator for treating the surface of aluminum foil resistant to heat and humidity, a preparation method and application. The passivator is suitable for the surface treatment of aluminum foil of aluminum-plastic film for lithium ion battery soft packaging and general soft packaging of food, medicine, daily chemicals and the like. The passivator contains: a trivalent chromium compound (A), a fluorine-containing compound (B) and an epoxy-modified alkyd resin (C). The content of the trivalent chromium compound (A) is 5-60% based on the total mass of the passivator solid, the content of the fluorine-containing compound (B) is 0.01-20%, and the content of the epoxy-modified alkyd resin (C) is preferably 30-90%. The application can form a dense, strongly adhesive passivation film with excellent heat resistance and chemical resistance on the surface of the aluminum foil. The passivation film can meet the affinity requirement of the adhesive for the dry process and can resist the high-temperature compounding condition of the hot process, realizes the general use of the passivator in the dry process and the hot process, and greatly improves the production efficiency and process flexibility.

The invention relates to the technical field of functional leather materials, in particular to electrical functional leather as well as a preparation method and application thereof. The leather with the electrical function comprises a leather base material, the bottom coating layer is formed on at least one surface of the leather base material; the functional layer is formed on the bottom coating layer and comprises a hybrid conductive network formed by mutually combining a conductive polymer and an inorganic nano material; and the protective layer is formed on the surface of the functional layer. According to the electrical functional leather, on the premise that a small amount of inorganic nano materials are added and the inherent performance of the leather is not affected, a stable, efficient and patterned conductive network is constructed, the leather is endowed with excellent electrical performance, and the application range of the leather in the fields of intelligent wearing, electromagnetic protection and the like is widened.

The utility model relates to the field of buildings, in particular to a multifunctional heat shielding coating structure. Comprising a base layer, an anti-crack coarse mortar layer, a first primer layer, an aerogel heat insulation floating coat, an aerogel primer layer and a heat reflection heat insulation coating layer which are sequentially arranged from inside to outside. The utility model provides a multifunctional heat shielding coating structure which can reduce the cracking and falling risks of a coating and improve the heat insulation performance.

The invention provides slurry for a silicon-based negative electrode based on polyimide containing amido bonds and application of the slurry. The slurry for the silicon-based negative electrode comprises a negative electrode active material and a binding material, the negative electrode active material comprises a silicon-containing active material, the binding material comprises polyimide and / or a precursor thereof, and the precursor is polyamide acid; wherein the polyamide acid is prepared from a diamine monomer and a dianhydride monomer through a condensation polymerization reaction; the polyimide is prepared by carrying out imidization on polyamide acid; wherein the diamine monomer comprises an amido bond-containing diamine monomer, and the dianhydride monomer comprises an aromatic tetracarboxylic dianhydride monomer. According to the invention, an amido bond-containing structure is introduced into a polyimide main chain, and a functionalized polyimide binder with multiple hydrogen-bond interaction and moderate electrolyte compatibility is constructed, so that the interface adhesion between the binder and a silicon active material is enhanced, and the swelling of the binder in an electrolyte is inhibited.

The application discloses a printed circuit board and a manufacturing method thereof and an electronic product, and relates to the technical field of printed circuit boards. The manufacturing method of the printed circuit board comprises the following steps: providing a printed circuit board substrate, wherein the printed circuit board substrate comprises a solder mask layer; coating water-based paint on at least one side surface of the printed circuit board substrate, and forming a paint coating layer after leveling and drying, wherein the water-based paint comprises water-based polyacrylic paint. The technical scheme of the application can realize the unity of the functionality and the decoration of the printed circuit board, and the stability of the overall structure of the PCB is good.

The invention relates to the technical field of curing adhesives, and discloses a UV curing adhesive for an FPC and a preparation method of the UV curing adhesive. Comprising the following operation steps: mixing aliphatic polyurethane acrylate, a reactive diluent and a defoaming agent, heating to 50-60 DEG C, stirring for 1-2 hours, adding modified polyurethane acrylate, a photoinitiator and an antioxidant, uniformly mixing, and filtering to obtain the UV curing adhesive. Aliphatic polyurethane acrylate is used as a base material; the flexible adhesive has good flexibility and curing speed, but is high in shrinkage rate; in the scheme, trimethylolpropane triacrylate and siloxane ethylene glycol epoxy acrylate are taken as reactive diluents, so that the curing shrinkage rate and the thermal stability are reduced; and modified polyurethane acrylate with Schiff base is introduced to synergistically further improve the thermal stability of the UV curing adhesive.

The application discloses a high-safety solid-state lithium battery based on an ionic gel interface layer and belongs to the field of solid-state lithium battery preparation, and specifically comprises a pole core, and the positive pole sheet interface, the negative pole sheet interface and the pores of each layer in the pole core are filled with the ionic gel interface layer. The application is synthesized by adding 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to a double bond to end-capped synthesis of fluorine-containing flame-retardant bifunctional polyether crosslinking agent, and the crosslinking agent is injected into a dry battery together with a cyclic carbonate-based methacrylate compound and an electrolyte. After vacuum infiltration, in-situ thermal polymerization is initiated to build a three-dimensional crosslinking network to lock free electrolyte, form a conformal ionic gel interface layer, and significantly improve the safety performance and long-cycle performance of the solid-state lithium battery.

The present application relates to a kind of high-strength gel-based flexible electrochromic device.The high-strength gel-based flexible electrochromic device includes the first flexible electrode, electrochromic layer, gel electrolyte layer and second flexible electrode arranged in sequence;The gel electrolyte layer includes host material and cationic salt distributed in host material, and the host material is amino-terminated polyimide resin;Preferably, the molar ratio of cationic salt and amino-terminated polyimide resin is (2%~5%):1.

The invention provides a preparation method of a battery edge passivation composite film layer and a battery piece, and the method comprises the following steps: placing a sliced substrate in a magnetron sputtering cavity, and controlling the temperature of the substrate at 25-250 DEG C; sputtering a first target material by using a first medium-frequency power supply so as to deposit and form a passivation buffer layer on the substrate; sputtering a second target material by using a radio frequency power supply so as to deposit and form a passivation layer on the passivation buffer layer; sputtering a third target material by using a second medium-frequency power supply to deposit and form a passivation protection layer on the passivation layer to obtain a substrate with a passivation composite film layer; and the substrate with the passivation composite film layer is put into an annealing furnace to be subjected to an annealing process, and the temperature range is 100-300 DEG C. Compared with the prior art, the method provided by the invention is suitable for temperature-sensitive low-temperature process batteries such as heterojunction batteries, HBC batteries, HTBC batteries and the like, and passivation is realized without sacrificing the performance of the battery body.

This invention discloses a crystalline polyimide / polyimide composite material, its preparation method, and its applications. The method involves first uniformly mixing phenylhexacarboxylic acid trihydride with a diamine monomer, followed by a solid-phase reaction under argon atmosphere protection. After the reaction, the product is immersed in a polar solvent to obtain crystalline polyimide. Then, the crystalline polyimide is added to an organic solution of polyamic acid, subjected to ultrasonic treatment in an ice-water bath, and subsequently thermosetting to obtain the crystalline polyimide / polyimide composite material. The crystalline polyimide in this composite material has a layered two-dimensional COF structure, giving it relatively high thermal conductivity, heat resistance, and high-temperature mechanical properties. Introducing the crystalline polyimide into the polyamic acid solution utilizes the special interfacial compatibility between the amino groups in the crystalline polyimide and the anhydrides in the polyamic acid to react, solving the problem of difficult processing and effectively expanding its application range.

The invention discloses a method for inhibiting rust of rusted steel bars in a concrete structure, and aims to solve the problems that in the prior art, a safe, environment-friendly and long-acting steel bar corrosion inhibitor convenient to construct is lacked, and a long-acting steel bar corrosion prevention method formed by compounding materials such as an efficient anti-corrosion coating is lacked. Through three innovations of organic silicon modification, a nano-composite technology and a self-crosslinking system, the core problems of poor weather resistance, high VOC (Volatile Organic Compounds), insufficient dispersion stability and the like of the traditional acrylic emulsion are solved, and the acrylic emulsion is particularly suitable for severe environments with high ultraviolet rays, high humidity and the like, so that long-period corrosion prevention is realized, and the service performance of concrete is improved.

This invention relates to the field of rubber hose technology, and discloses a highly flexible and pressure-resistant rubber hose and its preparation method. The preparation method is as follows: An inner layer compound rubber is fed into an extruder and extruded at 70-90°C to form a tubular inner rubber layer. Then, on the surface of the tubular inner rubber layer, polyester tempered brown filaments are braided into a tubular skeleton using a braiding machine, controlling the braiding density to be 80%-95% and the braiding angle to be 45°-60°. Finally, an outer layer compound rubber is fed into an extruder and extruded at 70-90°C to coat the outside of the skeleton layer, forming an integrated composite hose blank. The blank is then fed into a vulcanizing device, controlling the vulcanizing pressure at 0.8-1.2 MPa, the temperature at 150-170°C, and the holding vulcanization for 25-50 minutes. After vulcanization, it is cooled to obtain a highly flexible and pressure-resistant rubber hose. The highly flexible and pressure-resistant rubber hose prepared by this invention has excellent pressure resistance, flexibility, and aging resistance.

The utility model discloses a honeycomb aluminum plate composite stone thin plate, which belongs to the field of stone plates, and comprises a stone base plate, the upper end of the stone base plate is connected with a honeycomb aluminum plate component, and the outer part of the honeycomb aluminum plate component is connected with a connecting component. The aluminum honeycomb core is filled with the flame-retardant core material, flame can be prevented from making direct contact with the honeycomb aluminum plate or the stone layer, fire spreading is delayed, part of the flame-retardant material (such as expansive graphite) expands when heated, inert gas is released, oxygen is diluted, and combustion chain reaction is blocked; by filling the phase-change material microcapsules, heat can be absorbed / released at the phase-change temperature (20-30 DEG C), ambient temperature fluctuation is adjusted through latent heat storage, for example, solar heat is absorbed in the daytime and heat is released at night, energy consumption of an air conditioner in a building is reduced, and more energy conservation and environmental protection are achieved.

The present application relates to hydrogen energy preparation technical field, specifically relates to a kind of porous transport layer for proton exchange membrane water electrolysis cell and its preparation method and application.The porous transport layer includes titanium matrix and composite coating, the composite coating includes Ta barrier layer, PtTa transition layer and Pt surface conductive layer in turn from matrix to outside.The present application adopts magnetron sputtering process to prepare the composite coating, with the characteristics of process parameter precision controllable, batch preparation repeatability excellent, can be widely applied to the surface modification of porous transport layer in proton exchange membrane water electrolysis device, effectively improve the overall performance and service life of electrolyzer.

The invention relates to the technical field of rubber hoses, and discloses a high-flexibility pressure-resistant rubber hose and a preparation method thereof.The preparation method comprises the following steps that inner-layer rubber compound is put into an extruder and subjected to extrusion molding at the temperature of 70-90 DEG C to form a tubular inner rubber layer, polyester tempered palm fibers are made into a tubular framework on the surface of the tubular inner rubber layer through a braiding machine, and the tubular framework is subjected to extrusion molding at the temperature of 70-90 DEG C; the weaving density is controlled to be 80%-95%, the weaving angle is 45-60 degrees, finally, the outer-layer rubber compound is put into an extruder and extruded at the temperature of 70-90 DEG C to coat the outer side of the framework layer, and a composite hose blank is integrally obtained; feeding the tube blank into vulcanization equipment, controlling the vulcanization pressure to be 0.8-1.2 MPa and the temperature to be 150-170 DEG C, preserving heat and vulcanizing for 25-50 minutes, and cooling after the vulcanization is finished, so as to obtain the high-flexibility pressure-resistant rubber hose. The high-flexibility pressure-resistant rubber hose prepared by the invention has good pressure resistance, flexibility and aging resistance.

The application relates to a polylactic acid polyester nanosheet powder and a preparation method and application thereof, relates to the technical field of high polymer materials, and solves the problem that the preparation technology of the polylactic acid polyester powder cannot simultaneously consider simple process, low equipment cost, controllable morphology and avoidance of exogenous impurity residues. The application adds a polymer into a mixed solvent, stands, obtains a polymer gel, adds a solvent into the polymer gel, stirs to obtain a suspension, filters and dries the suspension to obtain the polylactic acid polyester nanosheet powder, and the polylactic acid polyester nanosheet powder can be applied to the fields of drug slow-release carriers, medical and beauty tissue filling materials and 3D printing materials. The application realizes controllable preparation of a polylactic acid polyester nanosheet structure, significantly reduces monomer residue rate (0.10% to 0.15%) and solvent residue rate (0.01%) of the polylactic acid polyester nanosheet powder, and further greatly reduces impurity residue risk.