156results about How to "Improve the bonding strength of the interface" patented technology

The invention discloses a silver-coated copper powder preparation method based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition, and relates to the technical field of powder surface treatment. The method specifically comprises the following steps that copper powder is soaked in acid liquor, then filtering, washing and drying are conducted, and pretreated copper powder is obtained; immersing the pretreated copper powder into a hydrochloric acid solution of nickel chloride hexahydrate, and then filtering, washing and drying to obtain sensitized copper powder; immersing the sensitized copper powder into a hydrochloric acid solution of palladium chloride, and then filtering, washing and drying to obtain activated copper powder; mixing the activated copper powder with the reduction solution to obtain a solid-liquid mixture, adding a silver-ammonia solution into the solid-liquid mixture, heating for reaction, and filtering after the reaction is finished to obtain a solid product; and washing and drying the solid product to obtain the silver-coated copper powder based on nickel layer enhanced palladium catalysis and active hydrogen synergistic deposition. The silver-coated copper powder with a compact silver layer and high binding force is prepared through the ternary synergistic effect of nickel layer sensitization, palladium nanometer activation and formaldehyde reduction.

The invention aims to provide a preparation method and application of a CMC / PVA active packaging film coated with chitosan-tannic acid on the surface, and belongs to the field of food preservation. Comprising the following steps: firstly, preparing a CP40 film, and then preparing a CP40 / CT% composite film: preparing a chitosan solution with the mass concentration of 1%, adding tannic acid TA into the chitosan solution, stirring for 30 minutes in a shading manner at room temperature to form a CT coating solution, flatly laying the prepared CP40 film on a planar carrier, coating the surface of a substrate film with the CT coating solution, and putting the composite film and the carrier into a drying oven at 45 DEG C for constant-temperature drying, so as to obtain the CP40 / CT% composite film. And after the solvent of the coating layer is completely volatilized, taking out and stripping to obtain the CP40 / CT% composite film. Under the action of hydrogen bonds and electrostatic attraction, a compact network structure of an amorphous-weak crystal region is formed in the composite film, so that the interface bonding strength of the film is enhanced, and the rigidity and flexibility of the film are balanced. The physical and chemical properties and biological activity of the composite membrane are synergistically optimized, and the composite membrane has obvious degradation signs after being buried in soil for 35 days and belongs to a biodegradable material.

This invention provides a plasma-modified glass fiber reinforced polyetheretherketone (PEEK) composite material and its preparation method, belonging to the field of glass fiber reinforced materials. The composite material is prepared by treating a PEEK film and glass fiber cloth with glow discharge plasma, followed by hot pressing, resulting in a composite material with good compatibility between PEEK and glass fiber. This method can significantly improve the interfacial bonding strength between glass fiber and PEEK resin, thereby improving the mechanical properties of the composite laminate. The interlaminar shear strength of the composite material is increased by 43% compared to the untreated composite material. Furthermore, this method also has the advantages of energy saving, environmental protection, short processing time, and high efficiency.

The invention provides a hard and tough alternately laminated light-weight corrosion-resistant composite material, which comprises a laminated matrix formed by periodically and alternately stacking high-strength aluminum alloy layers and carbon fiber reinforced thermoplastic resin layers; the metallurgical-mechanical composite interface is located between the high-strength aluminum alloy layer and the carbon fiber reinforced thermoplastic resin layer, forms a nanoscale coarse structure on the surface of the aluminum alloy through plasma activation treatment, and is combined with the thermoplastic resin matrix to form a transition area with mechanical interlocking and chemical bonding functions; the conductive polymer anticorrosive coating covers the surface of the outermost layer of the laminated matrix; the preparation method of the light-weight anti-corrosion composite material comprises the following steps: surface pretreatment, plasma activation treatment, laying, hot-pressing curing and preparation of an anti-corrosion coating. Through the synergistic effect of macroscopic laminated configuration design, microcosmic interface strengthening and a surface active anti-corrosion coating, the advantage of light weight is kept, and meanwhile, balanced improvement of impact wear resistance and long-acting electrochemical corrosion resistance is achieved.

The invention relates to the technical field of papermaking, and provides a composite fiber material and a preparation method thereof.The composite fiber material comprises a reinforcing layer and a functional layer which are arranged in a stacked mode; the reinforcing layer comprises matrix-fibril type composite fibers, and the matrix-fibril type composite fibers comprise synthetic fibrils and matrix fibers covering at least part of the surfaces of the synthetic fibrils; the functional layer comprises a skin-core type composite fiber, and the skin-core type composite fiber comprises a core layer and a functional skin layer wrapping at least part of the surface of the core layer. According to the invention, the interface bonding and load transmission efficiency of synthetic fibrils and a cellulose network is improved on the enhancement layer, and a high-strength bearing skeleton is constructed; the functional layer limits functional components on the surfaces of the fibers to form a stable functional skin layer, so that the functional components are prevented from forming a weak boundary layer among the fibers and weakening fiber bonding; the two layers cooperate to realize that the paper-based material keeps high strength and reduces the interlayer stripping risk while obtaining the target surface function.

This invention discloses a high thermal conductivity PCB metal substrate and its preparation method, relating to the field of PCB manufacturing technology. The high thermal conductivity PCB metal substrate of this invention comprises at least a metal base layer and a thermally conductive dielectric layer; the thermally conductive dielectric layer comprises at least the following raw materials in parts by weight: 100 parts of 1,5-naphthol modified epoxy resin; 20-35 parts of bismaleimide; 10-25 parts of diallyl biphenyl ester; 20-50 parts of cyanate ester; 20-50 parts of bismaleimide-coated aluminophosphate passivated aluminum nitride@boron nitride composite thermally conductive filler; 5-15 parts of bismaleimide-octavinyl cage-type polysilsesquioxane composite porous microspheres; 20-35 parts of curing agent; and 0-10 parts of diluent. The PCB metal substrate prepared by this invention possesses high thermal conductivity, low dielectric constant, high interfacial peel strength, and excellent heat resistance.

The invention belongs to the technical field of solid oxide fuel cells, and discloses a solid oxide fuel cell total cell and a preparation method thereof. The problem that in the prior art, when an SOFC full battery is manufactured through a layer-by-layer preparation method, bending deformation of battery pieces is serious is solved. According to the invention, by optimizing the slurry formula and the solvent system of each functional layer, the shrinkage behavior of each layer is matched; by adopting a hot-pressing compounding process, the interface bonding strength between the functional layers is remarkably improved, and the layering risk is reduced; through a co-sintering process, the sintering frequency is reduced, the preparation period is shortened, and the energy consumption is reduced. The total battery prepared by the invention has the advantages of high flatness, good interface bonding strength, excellent electrochemical performance, excellent thermal stability and the like, can remarkably improve the assembly efficiency and the operation stability of an SOFC (Solid Oxide Fuel Cell) electric pile, reduces the production cost, and has a wide market prospect.

The utility model relates to a kind of shock absorption technology technical field, concretely relates to a kind of vibrating screen rubber shock absorbing spring. Including by a plurality of compression unit series into one's body shock absorber, shock absorber upper end is fixed with upper sleeve, upper sleeve upper portion is internally machined with internal thread, upper sleeve lower end is internally machined with four edge hole, shock absorber lower end is fixed with lower sleeve, lower sleeve is slidably provided with connecting rod, connecting rod penetrates lower sleeve, connecting rod upper end is fixed with four edge head, four edge head can be connected in four edge hole after going up, connecting rod lower end is machined with four edge block. By the four edge head of connecting rod top and the clamping design of the four edge hole of upper sleeve, rigid fixation of upper sleeve is realized in bolt tightening process. This structure can effectively offset the torque generated when bolt rotates, avoid the deformation or damage of rubber shock absorbing spring due to stress distortion, while ensuring axial centering during threaded connection, greatly improve installation efficiency.

The application discloses a graphene modified aluminum-based composite plate and a preparation method thereof, which comprises the following components in terms of mass ratio: aluminum alloy: ceramic: alkyl magnesium solution: graphene = 4500-5000: 10-50: 1000: 1; the ceramic particle size is 0.05-50 mu m; the aluminum alloy particle size is 10-100 mu m; the composite plate provided by the application has a tensile strength of up to 512 MPa, a yield strength of up to 407 MPa, and a corrosion rate of only 0.9 g / m 2 d, and the preparation method is simple and efficient.

The invention discloses a PLA (polylactic acid) laminated composite material as well as a preparation method and application thereof, and belongs to the technical field of laminated paper. 20 to 30 parts of a bio-based toughening component; 15 to 25 parts of cationized filler; 2-4 parts of a heat-resistant compatilizer; 1 part of a nucleating agent TMC-300; the heat-resistant compatibilizer is a terpolymer formed by norbornene imide, 1, 6-hexanediol diacrylate and glycidyl methacrylate, according to the PLA lamination composite material provided by the invention, through the synergistic effect of the heat-resistant compatibilizer and the cationization filler, an organic-inorganic dual-reinforcement system is constructed, the material body performance is enhanced, the heat-resistant compatibilizer and the cationization filler are combined, and the heat-resistant compatibilizer and the cationization filler are combined, so that the heat-resistant compatibilizer and the cationization filler are combined, and the heat-resistant compatibilizer and the cationization filler are combined. And the interface bonding strength of the lamination layer and the paper is improved, and finally, the full-biodegradable lamination material with high heat resistance, excellent flexibility and firm interlayer bonding force is prepared and is suitable for preparing heat-resistant lamination paper products.

The present application relates to the technical field of heavy-duty gas turbine, and particularly relates to a heavy-duty gas turbine high-temperature alloy welding defect intelligent identification and repair method. By acquiring a welding area infrared thermal image sequence to identify an abnormal temperature drop area as a candidate defect area, then performing defect verification and type determination through ultrasonic phased array scanning, calculating a repair heat input curve according to the defect type, executing pulse modulation cladding repair and adjusting parameters according to real-time temperature field and acoustic emission signals, automatic identification and accurate repair of welding defects can be realized, and the repair quality and efficiency are improved.

The invention provides a composite material, a preparation method thereof and conductive slurry, and belongs to the technical field of conductive materials. The preparation method comprises the steps that a base material is pretreated, an activated base material is obtained, and the base material comprises copper powder or nickel powder; and an atomic layer deposition technology is adopted, a coating layer is deposited on the surface of the activated base material, the composite material is obtained, and the coating layer comprises a silver layer. The composite material prepared by the invention has the characteristics of uniform and compact coating, controllable thickness, strong interface bonding force, strong oxidation resistance, stable performance and the like, and the performance of the conductive slurry can be remarkably improved.

This invention provides an electropolymer-modified aluminum current collector, its preparation method, and its application, relating to the field of aluminum foil current collector technology. By modifying the current collector surface, it primarily addresses the interface problem between the current collector and the active material, thereby improving the performance of lithium-ion batteries. This invention uses an aluminum foil current collector as the anode, a graphite plate as the cathode, and an acidic solution of a conductive polymer monomer as the electrolyte. Anodizing electropolymerization is performed using a constant current or constant voltage method, followed by washing and drying to obtain the electropolymer-modified aluminum current collector. The conductive polymer monomer is at least one of aniline, thiophene, and pyrrole; the concentration of the conductive polymer monomer in the electrolyte is 0.1-1.0 mol / L; and the polymerization time is 5-10 min. This invention effectively reduces the contact resistance between the current collector and the active material, improves the bonding strength between the coating and the substrate, and enhances the corrosion resistance of the current collector, showing promising application prospects.

The invention discloses a preparation method of a graphene copper-based composite material, and belongs to the technical field of copper-based composite materials. The method comprises the following steps: (1) carrying out surface pretreatment on a copper foil; (2) dropwise adding the graphene dispersion liquid on the surface of the copper foil, and drying the copper foil after the graphene dispersion liquid is freely diffused until the graphene dispersion liquid covers the surface of the copper foil; (3) stacking the copper foils in a manner that a graphene layer is arranged between two layers of copper foils, and then sequentially carrying out cold pressing and hot pressing to obtain a hot-pressed composite material; (4) annealing the hot-pressed composite material to obtain an annealed composite material; (5) carrying out cold rolling on the annealed composite material to obtain a rolled composite material; and (6) the rolled composite material is subjected to annealing treatment, and the graphene copper-based composite material is obtained. On the basis of simplifying the preparation process and reducing the preparation demand conditions, the graphene is promoted to effectively and fully exert the strengthening effect, and the comprehensive performance of the composite material in multiple aspects is improved.

The invention provides a nano-composite anti-seepage coating for goaf sealing and a preparation method and application thereof. The impermeable coating comprises the following components in percentage by mass: 10 to 30 percent of nano silica sol subjected to surface organic modification, 15 to 35 percent of styrene-butadiene latex subjected to pH buffer stabilization, 0.5 to 10 percent of functional nano material subjected to surface activation treatment, 20 to 60 percent of superfine sand and the balance of short fiber, inorganic powder filler and auxiliaries. The method comprises raw material pretreatment; step-by-step gradient blending is performed; and functions are compounded. According to the application, the nano-composite anti-seepage coating is applied to surrounding rock reinforcement, crack plugging or anti-seepage sealing engineering of a coal mine goaf. The slurry has the advantages of being high in deep infiltration capacity, excellent in surface film forming and internal compatibility and stable in performance, an internal infiltration reinforcing layer and a surface sealing layer can be formed at the same time after construction, and an integrated double-layer anti-seepage network is formed.

This invention discloses a microtexturing treatment and lamination process for the copper foil surface of a low-thermal-expansion high-frequency copper-clad laminate (CCL). Belonging to the field of CCL manufacturing technology, it solves problems in existing CCL technologies, such as the difficulty in balancing peel strength and high-frequency transmission performance, excessively high coefficient of thermal expansion, easy delamination between layers, and patent conflicts. This invention employs a combined plasma etching and chemical micro-etching process to prepare a honeycomb-like pit-column-protrusion composite microtexture on the resin-coated surface of the substrate copper foil. After modification with a fluorine-containing and aminosilane coupling agent and mixed passivation treatment, a surface-modified copper foil is obtained. This foil is then laminated with a low-thermal-expansion high-frequency prepreg containing linear polyarylamide through a segmented preheating, gradual pressure curing, and slow cooling and depressurization process to prepare the CCL. This invention features a simple process, conforms to industrial practice, exhibits excellent overall performance, effectively avoids patent conflicts, and is suitable for high-end fields such as 5G communication and AI servers.

The invention discloses a preparation method of a polypropylene composite filler based on electrocatalytic oxidation coal gasification fine slag as a raw material, the preparation method comprises the steps of raw material treatment, system modification, material electrolytic oxidation and material post-treatment, the polypropylene composite filler comprises polypropylene resin and the polypropylene composite filler, based on the total weight of the composite material, the usage amount of the composite filler is 5-20wt%, and the usage amount of the composite filler is 5-20wt%. The raw materials comprise an environment-friendly functional auxiliary agent accounting for 0.5-5% of the total weight of the composite material, and the functional auxiliary agent is selected from one of a weather-proof agent, a halogen-free flame retardant and a bio-based antibacterial agent. The method has the advantages that the low-temperature plasma pretreatment and the composite modifier assisted electrocatalytic oxidation process are combined, a large number of active sites can be quickly and efficiently introduced on the surface of the coal gasification fine slag through the low-temperature plasma treatment, and the surface energy and the reaction activity of the coal gasification fine slag are remarkably enhanced.

This invention pertains to compositions of polymeric compounds, specifically a recycled rubber powder modified asphalt based on a renewable composite activator, its preparation method, and its application. The recycled rubber powder modified asphalt comprises a base asphalt and activated rubber powder in a mass ratio of 1:(0.2~0.3). The activated rubber powder comprises waste tire rubber powder and a composite activator in a mass ratio of 10:(0.8~1.5). The composite activator comprises an organic phase and an inorganic phase in a mass ratio of (1.5~3):1. The organic phase is a chitosan-amino acid derivative, and the inorganic phase is a layered bimetallic hydroxide. Compared with existing technologies, the rubber powder modified asphalt prepared by this invention exhibits good high-temperature storage stability and interfacial structural integrity, demonstrating excellent anti-aging properties and high-temperature rutting resistance during long-term service.

This invention relates to the field of coatings, specifically to an industrial anti-corrosion coating and its preparation method. The coating comprises a film-forming resin, a curing agent, a solvent, and an anti-corrosion composite nanofiller. The anti-corrosion composite nanofiller has a three-layer structure: a core layer of mesoporous silica loaded with an organic corrosion inhibitor; a middle shell layer of in-situ grown amino-functionalized metal-organic framework material; and an outer layer of low surface energy formed by modification with a hydrophobic modifier.

The invention discloses a hydrophobic photocatalytic epoxy resin / carbon fiber composite material and a preparation method thereof. The method comprises the following steps: pretreating a base material; constructing a nano TiO2 / epoxy composite layer on the surface of the pretreated sample; the method comprises the following steps: respectively preparing a low-concentration KH560 solution and a high-concentration KH560 solution, firstly immersing a sample into the low-concentration KH560 solution for treatment, and then immersing the sample into the high-concentration KH560 solution for treatment to form a gradient concentration layer with the concentration gradually increased from inside to outside; then carrying out ultraviolet light assisted grafting treatment; and finally, carrying out curing by adopting an intermittent curing process of segmented heating and interspersed natural cooling. According to the preparation method, KH560 and TiO2 form chemical bonding through gradient concentration design, and the interface bonding strength and hydrophobic performance are remarkably improved by combining ultraviolet light treatment and an intermittent curing process. The surface water contact angle of the prepared composite material can reach 114 degrees or above, the photocatalytic activity is well kept, and the composite material can be widely applied to the fields of ocean engineering, aerospace, new energy automobiles and the like.

The invention discloses a papermaking dry strength agent preparation method, which comprises: S1, dissolving chitosan in an acidic aqueous solution to form a chitosan glue solution, and removing oxygen; s2, dropwise adding a high-concentration acrylamide solution, a water-phase monomer mixed solution and an initiator solution for graft copolymerization to obtain a branched prepolymer; s3, a cross-linking agent is added for a cross-linking reaction, and a micro-cross-linked structure is formed; primary amino groups on a chitosan chain are terminated, and branched amphoteric chitosan-polyacrylamide dry strength agent mother liquor is obtained; s4, carrying out composite dispersion on the composite material and a nanocellulose material, and diluting to obtain a diluent; and S5, after a paper machine slushing pump and before a pressurized screen, firstly adding an anionic garbage capturing agent for pre-flocculation, then continuously feeding the diluent, and stirring to obtain the product. According to the papermaking dry strength agent prepared by the preparation method disclosed by the invention, the interface bonding strength of the papermaking dry strength agent to fibers and the adaptability and use efficiency of the papermaking dry strength agent in a complex wet end environment are remarkably improved, and the requirements of the modern papermaking industry on high-performance and high-stability dry strength agents can be met.

The invention relates to the field of high-temperature protective ceramic coatings for aero-engines, and particularly discloses an environmental barrier coating with a gradient structure and a long service life and a suspension plasma spraying preparation method thereof. The specific method comprises the following steps: by taking silicon powder as a raw material, preparing a bonding layer on a silicon carbide ceramic or SiCf / SiC ceramic-based composite material by utilizing an axial powder feeding three-electrode atmosphere plasma spraying system, preparing suspension liquid by taking rare earth silicate RE2Si2O7 and the like as raw materials, and respectively spraying a compact structure RE2Si2O7 middle layer and a columnar crystal-like structure RE2Si2O7 surface layer; and the prepared state coating is placed in Ar atmosphere and subjected to high-temperature annealing treatment, and the environment barrier coating with the high crystallinity and the gradient structure is obtained. The coating prepared by the invention has gradient transition structural characteristics, has excellent thermal shock resistance in actual tests, and has important application significance in prolonging the service life of silicon carbide ceramic or SiCf / SiC ceramic-based composite materials.

The application discloses a kind of media-resistant and anti-aging multilayer fuel pipe, including sequentially arranged from inside to outside inner layer, barrier layer, adhesive layer, braided layer and outer layer, inner layer is F-TPV fluorine-containing thermoplastic elastomer layer, barrier layer is FKM fluororubber layer, adhesive layer is ECO / CO fluorine-containing chloro ether rubber layer, braided layer is aramid reinforced layer, outer layer is AEM rubber layer, the thickness of outer layer is 1.2±0.2mm, for the pipe blank formed by inner layer, barrier layer, adhesive layer, braided layer, the thickness of outer layer is used to compensate to meet the thickness requirement of multilayer fuel pipe wall thickness 3.5mm.The application also discloses a kind of media-resistant and anti-aging multilayer fuel pipe of the preparation method as described above.Compared with prior art, solve the problem that the interlayer bonding force of existing multilayer fuel pipe is insufficient and the media-resistant, anti-aging performance is insufficient.

This invention relates to the field of building waterproof coating technology, and discloses a high-elasticity, high-adhesion spray waterproof coating, which is composed of component A and component B in a mass ratio of 10:1 to 12:1. Component A includes the following components and their mass parts: 40 to 55 parts of polyurethane prepolymer, 12 to 22 parts of cement-based composite filler, 1.0 to 2.0 parts of fluorosilicone modified halloysite, 0.6 to 1.4 parts of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 0.4 to 1.2 parts of polycarboxylate cement modifier, 0.2 to 0.7 parts of antioxidant 1010, and 0.1 to 0.5 parts of defoamer. This highly elastic and highly adhesive sprayable waterproof coating and its preparation method introduce γ-(2,3-epoxypropoxy)propyltrimethoxysilane into the coating system. Its epoxy groups can react chemically with the hydroxyl groups abundant on the surface of the cement-based substrate to form stable chemical bonds. At the same time, the cement-based composite filler in component A is homologous to the cement-based substrate material, which can improve the compatibility between the coating and the substrate and effectively solve the problem of weak adhesion of organic waterproof coatings.

This invention discloses a bio-based biodegradable synthetic leather material and its preparation method, belonging to the field of polymer synthetic leather material manufacturing and modification technology. The method includes: mixing and dehydrating castor oil polyol, lignin-based polyol, and bio-based polycarbonate diol; adding isocyanate and a bio-based chain extender containing dynamic disulfide bonds to react and obtain a bio-based polyurethane resin; dissolving the resin in a solvent; adding amphiphilic modified nanocellulose whiskers, polydopamine-modified silica, bio-based epoxidized soybean oil, a pore-forming agent, and a stabilizer to obtain a synthetic leather coating solution; coating the coating solution onto a base fabric to form a wet film; gradient solidification; washing with water; and drying to obtain the bio-based biodegradable synthetic leather material. This invention improves the crosslinking stability and interlayer bonding force of the material under hygrothermal aging by using dynamic disulfide bond self-repair, nanoparticle interface enhancement, and gradient solidification to regulate the pore structure, reducing the release of volatile organic compounds, and balancing water resistance, moisture permeability, and biodegradability.

This invention discloses Ni2Fe(SO4) 0.5 (OH)6(H2O) 3.85 This paper discusses / NF catalysts, their preparation methods, and applications, belonging to the field of catalyst synthesis technology. Using large-size nickel foam as a substrate, Ni₂Fe(SO₄) is directly prepared through one-step in-situ microwave-driven growth. 0.5 (OH)6(H2O) 3.85 The nanosheet array eliminates the need for subsequent loading or additional processing, simplifying the process and enhancing the bond between the catalyst and the substrate. This catalyst exhibits excellent performance in hydrogen production via water electrolysis, particularly in seawater electrolysis.

The application relates to the technical field of metal matrix composites, and particularly discloses a high-entropy alloy binder phase gradient cemented carbide tool material and a preparation method thereof. The high-entropy alloy binder phase gradient cemented carbide tool material comprises a surface layer, a transition layer and a core layer, and the surface layer comprises WC powder 60-70 parts, high-entropy alloy binder phase 0.5-2.0 parts, high-entropy carbide precursor 5-10 parts and composite grain inhibitor 0.3-0.8 parts in terms of mass parts; the transition layer comprises WC powder 45-55 parts and high-entropy alloy binder phase 5-10 parts. In the application, the WC powder, the high-entropy alloy binder phase, the high-entropy carbide precursor, the composite grain inhibitor and the carbon black are matched in the surface layer, the transition layer and the core layer, the carbon black content in each layer presents a gradient distribution, and the high-entropy carbide precursor generates nanoscale high-entropy carbide precipitated phases in situ under the driving of carbon potential, so that the abnormal growth of WC grains is inhibited.

The application belongs to the technical field of brush materials, and provides a silver graphite brush material and a preparation method thereof.The raw materials of the silver graphite brush material include flake graphite particles, silver powder and nano silicon powder.The silver graphite brush material breaks the technical limitations of traditional resin bonding systems and homogeneous structures, can take into account the advantages of original wear resistance, high temperature resistance and long service life, and can also solve the industry difficulties of poor assembly welding reliability of small brushes and high environmental protection cost.The preparation method can realize synchronous improvement of micro interfaces and macro structures, and the process is stable, controllable and industrialized batch production.

The invention discloses a surface treatment method for improving the wear resistance of a plunger of a plunger pump, and relates to the field of metal surface treatment. The method sequentially comprises the steps of substrate pretreatment and activation preheating, vacuum pulse ion nitriding, metal steam vacuum arc ion implantation, gradient transition layer deposition, silicon-doped diamond-like coating construction and vacuum stress smoothing and cooling. A complete system of deep supporting, subsurface stress reconstruction, interface modulus matching and surface self-lubricating is constructed through multi-process cooperation. The core lies in that a nitride strengthening phase formed by nitriding is used for providing a bearing basis, variable-energy ion implantation is used for constructing a residual compressive stress field to inhibit fatigue cracks, the gradient transition layer is used for relieving interface stress, and the silicon-doped diamond-like coating is used for achieving both wear resistance and self-lubrication. The method solves the problems of poor interface bonding, insufficient anti-fatigue performance and the like caused by an existing single process or simple process superposition, the wear resistance and the use stability of the plunger are remarkably improved, and the working reliability and the service life of the plunger pump are guaranteed.

The utility model relates to the field of lithium ion battery preparation discloses a kind of soft package lithium ion batteries. Battery includes: aluminium plastic film casing and internal electric core, the aluminium plastic film casing has the chamber formed by sealing, the electric core is encapsulated in the chamber, the aluminium plastic film casing includes the positive edge of electrode extraction with, and side edge without electrode extraction, the side edge is bent at least twice, forms a folded edge structure, in the folded edge structure, between each adjacent two the folded edge area of stacking, between the folded edge area of innermost layer and the side of the electric core, all are bonded by hot melt adhesive layer. The scheme is especially suitable for improving the sealing reliability of ultrathin soft package lithium ion battery.