732results about How to "High bonding strength" patented technology

A nonvolatile memory cell includes first and second electrodes and a data storage layer extending between the first and second electrodes. An oxygen diffusion barrier layer is provided, which extends between the data storage layer and the first electrode. An oxygen gettering layer is also provided, which extends between the oxygen diffusion barrier layer and the data storage layer. The oxygen diffusion barrier layer includes aluminum oxide, the oxygen gettering layer includes titanium, the data storage layer includes a metal oxide, such as magnesium oxide, and at least one of the first and second electrodes includes a material selected from a group consisting of tungsten, polysilicon, aluminum, titanium nitride silicide and conductive nitrides.

A common mode noise filter includes a nonmagnetic layer, first and second magnetic layers sandwiching the nonmagnetic layer between the magnetic layers and contacting the nonmagnetic layer, a plane coil provided between the first and second magnetic layers and contacting the nonmagnetic layer, and an external electrode connected electrically with the plane coil. The first and second magnetic layers include a magnetic oxide layer and an insulator layer provided on the magnetic oxide layer. The insulator layer contains glass component. This common mode noise filter has a large bonding strength between the external electrode and the insulator layer.

The invention discloses a method for preparing a silicon carbide coating on a graphite surface. The method includes, firstly, placing a graphite crucible containing solid silicone materials in a high temperature graphitizing furnace and placing a graphite base body on a graphite support in the graphite crucible to generate a silicon carbide coating by means of direct reaction of silicon steam and carbon on the surface of the graphite base body; and secondly, placing the graphite base body which generates the silicon carbide coating on the surface in a chemical vapor deposition (CVD) furnace to be pyrolyzed on the surface of the silicon carbide coating which is located on the surface of the graphite base body to generate a CVD silicon carbide coating. According to the method for preparing the silicon carbide coating on the graphite surface, by means of the direct reaction of the silicon steam formed by heating the solid silicone materials and the carbon on the surface of the graphite base body, an in-situ formed chemical vapor reaction (CVR) silicon carbide coating is firmly combined on the graphite base body so that combination intensity is improved; and then a CVD process is used for pyrolyzing the CVR silicon carbide coating at high temperatures on the CVD silicon carbide coating so that pore space of the CVR silicon carbide coating is effectively filled, and combination strength is improved.

There is provided a honeycomb structure 1 produced by bonding a plurality of honeycomb segments 12 into one piece via a bonding layer 8, each segment 12 having a number of through-holes 3 divided from each other by porous partition walls 2 and extending in the axial direction of the honeycomb segment. The bonding layer 8 comprises at least one cement layer 10 and at least one undercoat layer 9 present between the honeycomb segment 12 and the cement layer 10. There is provided a process for producing a honeycomb structure 1, wherein bonding the honeycomb segments 12 comprises applying at least one layer of an undercoat on each honeycomb segment 12, applying at least one layer of a cement, and bonding the honeycomb segments into one piece. The honeycomb structure has a high bonding strength and hardly gives defects such as cracks in bonded portion.

A marine fender has high bonding strength between a high-slip synthetic resin plate such as an ultrahigh-molecular-weight polyethylene plate and a rubber fender member, and quite long life-time of the high-slip synthetic resin plate. The high-slip synthetic resin plate and a rubber layer are previously welded to each other. The high-slip synthetic resin with the rubber layer and the rubber fender member are welded to each other by vulcanization. In this way, the marine fender is made.

The invention relates to a multi-core core-shell-structure silicon carbon composite negative pole material and a preparation method thereof. The preparation method comprises the following steps: 1. preparation method of high-dispersivity multi-core porous spheres; 2. preparation of high-dispersivity asphalt suspension; and 3. preparation of multi-core core-shell-structure silicon carbon composite negative pole material: adding the porous spheres prepared in the step 1 into the high-dispersivity asphalt suspension prepared in the step 2, carrying out ultrasonic dispersion, heating and drying by distillation while intensely stirring to remove the solvent, transferring the powder particles into a protective atmosphere, and holding at low temperature so that the asphalt liquid enters the inside of the porous spheres to enhance the binding strength between the silicon source and the conducting carbon mesh, carry out secondary coating on the silicon source, overcome the defects in the coating in the step 1 and enhance the capacity performance of the silicon; and carrying out high-heat treatment. The invention is simple and easy to implement, and has the advantage of high practicality. The prepared silicon carbon composite material has the advantages of high reversible capacity, designable capacity, favorable cycle performance, favorable heavy-current discharge capacity, high tap density and the like.

The invention relates to a preparation method of an aqueous polyurethane adhesive for laminated composite fabrics, and belongs to the technical field of adhesives. A blocking agent is utilized to block the excess -NCO groups in the synthesis, the -NCO groups are released in high temperature calendering and react with the hydroxy groups in the fabrics, and simultaneously the polar groups on the surfaces of materials comprising PVC and the like and urethane bonds, ester bonds, ether bonds and the like of polyurethane form hydrogen bonds, so the bonding strength is improved; and a thickening agent and/or a cross-linking agent are/is added after emulsification, so the viscosity of an emulsifier is improved, and an adhesive exudation problem during construction is solved. The adhesive can be stably stored in air at room temperature. The adhesive has the advantages of good adhesion, good water resistance, good yellowing resistance, and good mechanical performances.

The invention relates to a method for preparing an Al-Al2O3 composite coating on the surface of magnesium alloy, belonging to the technical field of metal surface treatment. The Al/Al2O3 composite coating prepared on the surface of the magnesium alloy by a calorization-oxidation method has high corrosion resistance and rigidity. The method comprises the following main steps of: firstly, coating an aluminum coating to the magnesium alloy, and then electrochemically oxidizing the aluminum coating to form an aluminum oxide film layer having extremely high corrosion resistance and rigidity, wherein a cold spraying method or a molten-salt aluminum electroplating method is used in the preparation process of the aluminum coating of the magnesium alloy, and common anodic oxidization and plasma anodic oxidization are used for the oxidation of the aluminum coating. By coating the aluminum coating to the surface of the magnesium alloy to carry out calorization treatment and then carrying out electrochemical anodic oxidization, the invention enhances the comprehensive protective performance of the surface of the magnesium alloy, and the Al/Al2O3 composite coating prepared on the surface of the magnesium alloy has the advantages of large bonding strength, high rigidity, good corrosion resistance and the like, thereby being the ideal protective coating for the magnesium alloy.

The invention provides a method for preparing a ceramic particle enhanced steel-base composite material cast by an evaporative pattern casting die. The method comprises the following steps of: uniformly mixing hard ceramic particles and aged foam beads according to any proportion, and filling the mixture into a curing die cavity of the die for curing to manufacture a foam die in which enhancement bodies are uniformly distributed; and then shaping according to the conventional evaporative pattern casting method, putting the obtained foam die into the cavity, smelting a base metal material to pouring temperature, pouring the base metal material into the cavity, cooling and solidifying the base metal material at room temperature, and clearing sand away from the base metal material to obtain the ceramic particle enhanced steel-base composite material, of which the hard ceramic particles are dispersed in the base metal. The preparation method is easy to operate, high in whole performance and high in yield rate; furthermore, in spite of whole enhancement and partial enhancement, various metal-base composite material parts can be directly made without secondary processing; the method is suitable for large-scale industrial production, and can be widely applied to anti-abrasion fields, such as mines, power, metallurgy, coals, building materials and the like.

The invention relates to acrylic acid modified waterproof mortar comprising cement, quartz sands, pulverized fuel ash, triple superphosphate powder, acrylic acid redispersable rubber powder, a water-repellent agent, a deforming agent and other auxiliary agents. The waterproof mortar with compact structure is obtained by adopting the acrylic acid redispersable rubber powder which has excellent ageing-resistant property and water-resistant property and good quartz sand graduation through formulation design and optimization, not only has good waterproof and impervious property, but also has excellent ageing-resistant property and excellent physical property.

A wiring board including a stacked wiring layer portion in which a dielectric layer and a conductor layer are stacked is formed on a core board portion, the stacked wiring layer portion including a stacked composite layer portion in which a polymer dielectric layer, a conductor layer and a ceramic dielectric layer are stacked in this order, the conductor layer being partially cut in the in-plane direction so as to have a conductor side cut portion, the ceramic dielectric layer being partially cut in the in-plane direction so as to have a ceramic side cut portion, the ceramic side cut portion and the conductor side cut portion being communicated to form a communication cut portion, a polymer constituting the polymer dielectric layer being filled in the communication cut portion so as to extend through the conductor side cut portion to the ceramic side cut portion.

The invention provides a method for improving interlaminar shear strength of medium/low-temperature cured prepreg by using polyurethane prepolymer. The method comprises the following steps: firstly, reacting isocyanate with polyether polyol according to a controllable ratio to obtain a terminal isocyanate polyurethane prepolymer; grafting the terminal isocyanate polyurethane prepolymer to a bisphenol type epoxy resin, and adding a mixed epoxy resin to obtain a modified epoxy resin matrix; uniformly mixing the modified epoxy resin matrix with a curing agent and an accelerant to obtain a resin system for prepreg; and finally, preparing the resin system into a rubber film, compounding the rubber film with reinforced fibers or fabrics so as to prepare the medium/low-temperature cured prepreg with excellent adhesiveness. The prepreg preparation process is reasonable, the bonding strength of the resin system and fiber is high, the interlaminar shear strength of the composite material is obvious improved, and the method is particularly suitable for low-temperature cured prepreg.

A display device includes a display panel, a phase retardation layer disposed above the display panel, a touch sensing structure including at least one sensing pattern directly disposed on at least one face of the phase retardation layer, a polarization plate disposed on the touch sensing structure, a window disposed on the polarization plate, and an adhesion layer disposed at least one of between the display panel and the touch sensing structure, between the touch sensing structure and the polarization plate and between the polarization structure and the window. The adhesion layer may include a side-chain crystallizable polymer having a melting temperature substantially higher than a room temperature.

Provided is a preparation method of a high-entropyAlCoNiCrFeMo alloy coating. The high-entropy AlCoNiCrFeMo alloy coating comprises the components in atomic percent of 100% Al, 100% Co, 100% Cr, 100% Fe, 100% Ni, and 10% Mo. The preparation method comprises the following steps: 1, blending; 2, smelting a mother alloy; 3, preparing an alloy electrode; 4, preparing a substrate; and 5, preparing the high-entropy alloy coating. The alloy coating prepared according to the preparation method provided by the invention is applied to surface deposition of a grinding tool to form a settled layer with high hardness, bonding strength, wear resistance and corrosion resistance on the surface of the grinding tool, or is applied to surface repairing of a worn workpiece, and belongs to the field of surface strengthening or surface modification.

The invention relates to a novel polymer anticorrosion painting material. The painting material is characterized by consisting of a component A and a component B, wherein the component B is a curing agent and accounts for 10-30 percent relative to the weight parts of the component A; and the component A comprises the following components in parts by weight: 30-50 parts of polyester polyurethane modified epoxide resin which serves as a main material and has the solid content of 100 percent, 30-50 parts of glass flakes with different flake diameters, 3-5 parts of nanoscale titanium dioxide and 10-20 parts of at least one of titanium pigment, mica powder and carbon black in any ratio, 1-5 parts of at least one of asbestos powder, lithopone and talc powder serving as auxiliary materials in any ratio, and 0.3-1 part of at least three of defoaming agent, flatting agent, thixotropic agent and coupling agent serving as aids in any ratio. The coating material has the advantages of convenience and rapidness of construction, high bonding strength, low using cost, high corrosion resistance, high wear resistance, favorable penetration resistance, higher temperature resistance and solid content of 100 percent.

A fluorine-containing adhesive material comprising a fluorine-containing ethylenic polymer having a carbonate group and/or a carboxylic acid halide group at a chain end or a side chain of the polymer, wherein a total of a number of the carbonate groups and/or carboxylic acid halide groups is at less than 150 per 1x10<6 >main chain carbon atoms, can directly impart the firm adherability to a substrate such as a metal, a glass or a resin while maintaining excellent properties such as chemical resistance, solvent resistance, weatherability and soil releasability possessed by a fluorine-containing polymer.

A high-heat-conductive and high-adhesion-strength organic silicon pouring sealant includes a component A and a component B, wherein the component A is mainly prepared by mixing the raw materials including, by weight, 50-150 parts of vinyl silicon oil, 0.1-10 parts of hydrogen-containing silicon oil, 0.1-1 part of an inhibitor, 1-30 parts of MQ silicone resin, 0.1-10 parts of a silane coupling agent, 0.1-10 parts of fumed silica, 0.1-10 parts of a surfactant, and 50-400 parts of a heat-conductive filler; and the component B is mainly prepared by mixing the raw materials including, by weight, 10-200 parts of vinyl silicon oil, 0.1-1 part of a catalyst, 0.1-10 parts of a tackifier, 0.1-10 parts of fumed silica, 0.1-10 parts of the surfactant, and 50-400 parts of the heat-conductive filler. The organic silicon pouring sealant has high adhesion strength, high heat conductivity, good mechanical performance and excellent electric performance.

The invention relates to an elastic bicomponent normal-temperature cured epoxy resin adhesive and a preparation method thereof. The component A of the epoxy resin adhesive is prepared from polyurethane-modified epoxy resin, bisphenol F epoxy resin, aliphatic polyglycidyl ether, inorganic nanopowder materials, polypropylene fiber and a coupling agent; and the component B of the epoxy resin adhesive is prepared from modified amine hardener, an accelerant, a coupling agent, inorganic nanopowder materials and polypropylene fiber. The epoxy resin adhesive has the characteristics of room-temperature curing, good elasticity of a cured adhesive layer, good bonding strength, cold and thermal shock resistances and the like.

The invention discloses a metal composite plate rolling technique based on corrugated surface combining type blank forming and belongs to the technical field of machining of materials of metal composite plate strips. The metal composite plate rolling technique comprises the following steps that a metal base plate and a doubling plate are selected, arc-shaped base plate ripples and arc-shaped doubling plate ripples matched with the arc-shaped base plate ripples are rolled on the combined surfaces of the base plate and the doubling plate respectively, the section of each arc-shaped toothed ripple is in the shape of an arc or an elliptic arc or a sine wave, the height of each arc-shaped ripple is s, the width of each arc-shaped ripple is t, the thickness of the doubling plate is h, s/h=0.01-0.9, and t=(10-20)s; the base plate and the doubling plate are cleaned and stacked together, the base plate ripples and the doubling plate ripples are engaged, blank forming is conducted, and a composite plate blank comprises a double-layer metal composite plate blank or a three-layer metal composite plate blank or a four-layer metal composite plate blank; and a composite plate strip is obtained through rolling. By the adoption of the metal composite plate rolling technique, the technical problems that when a dissimilar metal composite plate is produced, the binding performance of a combined interface is poor, and bending, cracks and large residual stress occur are solved, the combining efficiency is high, and the binding strength is improved essentially.

To provide a process for forming a catalyst layer whereby defects such as cracks are scarcely formed in the catalyst layer, and the bond strength is high at the interface between the catalyst layer and a reinforcing layer and at the interface between the catalyst layer and a polymer electrolyte membrane; and a process for producing a membrane/electrode assembly for a polymer electrolyte fuel cell, which is capable of exhibiting high power generation performance even under a low humidity condition and has sufficient mechanical strength and dimensional stability and which has excellent durability even in an environment where humidification and drying, etc. are repeated.

In the production of a membrane/electrode assembly 10, a first catalyst layer 22 (a second catalyst layer 34) is formed by a process comprising steps (a) and (b). (a) A step of applying a coating fluid comprising a catalyst and an ion-exchange resin, on a substrate to form a coating fluid layer. (b) A step of disposing a reinforcing layer 24 (34) on the coating fluid layer formed in the step (a) and then, drying the coating fluid layer to form a first catalyst layer 22 (a second catalyst layer 34).

The invention discloses a method of preparing friction material from blending material by wet method, which includes steps: dissolving resin into solvent to forming resin solution, immerging reinforcing fiber into the resin solution and adding surfactant simultaneously to make the resin and the reinforcing fiber knitted together and dispersed equally; mixing the reinforcing fiber wrapped with resin, friction capability regulator and filler, stirring equally, drying and obtaining the friction material. Advantages of the method is simple, realizing equal mixing of the fiber and resin by mixing the friction material by wet method and wrapping the fiber utilizing fluidity of resin solution, enhancing combination strength of resin and fiber under action of surfactant, decreasing amount of used resin and fiber, reducing production cost, avoiding evulsion of the fiber by friction force during braking process, and increasing friction capability and service life of brake block. The prepared friction material can be widely used for preparing motor vehicle brake block, machine tool, and brake and clutch lining for electrode.

The invention discloses a metal and plastic composite self-lubricating material and a preparation method thereof. The metal and plastic composite self-lubricating material comprises a metal layer, a plastic binding layer and a plastic working layer, wherein the plastic binding layer binds the metal layer and the plastic working layer together through a chemical bond of a molecule; one part of theplastic working layer is embedded in a drop pit of the metal layer; the plastic working layer includes the material components according to the mass percent as follows: 60-90 of polyether-ether-ketone, 5-20 of polyfluortetraethylene, 7 of graphite, 1 of MoS2 and 5-10 of aluminium oxide; and the plastic binding layer includes the material components according to the mass percent as follows: 70-90 of polyether-ether-ketone, 5-20 of polyphenyl thioether and 5-10 of aluminium oxide. By adding the plastic binding layer between the metal layer and the plastic working layer, the invention further improves the binding strength of metal and plastic, has favorable heat resistance and resistance to chemical corrosion, no environment pollution, low noise and energy saving; in addition, the usage temperature is -60 DEG C to 250 DEG C, the friction coefficient is 0.08-0.32 and the wear rate is 0.8-3.5*10<-6>mm<3>/N. m.

The invention discloses a hybridoma cell strain and an anti-porcine-epidemic-diarrhea-virus monoclonal antibody produced by the hybridoma cell strain. The anti-porcine-epidemic-diarrhea-virus monoclonal antibody has the preventing and/or treating function for porcine epidemic diarrhea viruses, solves the problem of piglet epidemic diarrhea virus infection caused when existing vaccines and maternal antibodies are insufficient, overcomes the defect that an existing vaccine is single in prevention function and can also be used for developing diagnostic reagent products for the porcine epidemic diarrhea viruses.

The invention relates to a fluoropolymer coating solution and a weather-resistant coating obtained therefrom. Fluoroplastics have excellent dielectric property and chemical corrosion resistance, high and low temperature resistance, and other excellent weatherability. At the same time, fluoroplastics also have the properties of waterproofness, no stickness, low friction coefficient, and good self-lubricating performance, etc. Currently, fluoroplastics are widely used in chemicals, electronics, electrical engineering, aviation, aerospace, semiconductors, machinery, textiles, construction, medicines, automobiles and other industrial fields. However, due to the intrinsic characteristics of fluoroplastics, the processing difficulty is very large. After long-term in-depth study, the inventor of the invention finds that the fluoropolymer coating solution provided in the invention can overcome the above disadvantages in the prior art. The coating obtained from the fluoropolymer coating solution provided in the invention has the characteristics of high fluorocarbon content, room temperature curing, good bonding strength with various substrates, no need of adhesive, convenient use and the like. The coating solution can be subjected to on-site construction under a variety of circumstances, and while improving the using performance, the use cost is reduced.

The invention provides an elastic bonding type Nd-Fe-B magnetic material, which is prepared through the following steps: preparation of raw materials, refinement of the prepared powder mixture, rolling, heat treatment and formation, thereby obtaining the elastic bonding type Nd-Fe-B magnetic material. The raw materials comprise the following components: 10-95 parts by weight of Nd-Fe-B magnetic powder, 1-50 part(s) by weight of ferrite powder selected from strontium ferrite and/or barium ferrite, 2-20 parts by weight of adhesive selected from at least one of CPE plastic, PE plastic and NBR rubber, 0.1-3 part(s) by weight of coupling agent, 0.2-3 part(s) by weight of plasticizer and 0.1-3 part(s) by weight of binder. The preparation of the raw materials comprises the following steps: screening the Nd-Fe-B magnetic powder with a 40-mesh sieve or a sieve with more than 40 meshes, blending the Nd-Fe-B magnetic powder after screening and the coupling agent until the coupling agent is completely dipped in the metal magnetic powder, and adding other raw materials. The invention also provides a manufacturing method of the elastic bonding type Nd-Fe-B magnetic material.

The invention relates to a preparation method for a microarc oxidation/hydrothermal treatment composite film on the surface of a magnesium alloy. The problem that the existing magnesium alloy is poor in corrosion resistance and bioactivity is solved. A microarc oxidation film is prepared on the magnesium alloy by using a microarc oxidation method, and then a bioceramic film is obtained by using hydrothermal treatment. Hydrothermal reaction liquid is composed of sodium hydroxide, calcium acetate and sodium hexametapolyphosphate. In the preparation method, the microarc oxidation is combined with the hydrothermal treatment; calcium and phosphorus are introduced to the surface of the microarc oxidation film by using the hydrothermal treatment; in addition, holes in the ceramic film are blocked by using hydrothermal treatment; therefore, corrosive media are effectively prevented from entering; the corrosion resistance of the composite film is effectively improved; and the corrosion resistance of the composite film to simulated body fluid is greatly improved by approximately 2 orders of magnitude.

The invention discloses a method for preparing a solvent-free waterborne polyurethane resin for synthesizing a leather bonding layer. The solvent-free waterborne polyurethane resin is prepared by adopting the steps of polymerization, emulsion and compounding. The method has the beneficial effects that no organic solvent is used in the preparation process, but water is used as a dispersion medium completely, so that the production is clean, the environmental pollution is reduced, the environmental-friendliness effect is good, and the production cost is lowered; through later chain extension stabilized by using ketimine, the bonding firmness and the toughness of the waterborne polyurethane resin are improved, and moreover due to addition of the additives such as a cross-linking agent, a leveling agent and a thickening agent in the compounding process, the leveling effect of a product is improved, the cross-linking curing degree is further improved, the product is more excellent in wearing resistance, solvent resistance and water resistance, good in bonding firmness, good in use effect and beneficial for popularization.

The invention discloses a method for preparing a composite steel plate with a multilayer structure. The multilayer structure prepared by the method is stainless steel/stainless steel or stainless steel/carbon steel/stainless steel or stainless steel/ ow alloy steel/stainless steel multilayer structure. The preparation method comprises the following steps: firstly, polishing the surfaces of a stainless steel plate and a carbon steel plate to reach the surface roughness degree Ra which is less than or equal to 25mu m; secondly, cleaning the treated surfaces, and removing oil stains, oxides and impurities on the surfaces of the plates; thirdly, stacking the cleaned plates together, fixing one end of the plate, polishing the plate with a definite gradient, and then placing the polished plates into an electric resistance furnace for thermal treatment; fourthly, taking out the plates and putting the plates on a rolling mill, and rolling the plates by 50 percent of pass pressing amount; fifthly, cutting checked edges and burrs at the edge parts of the rolled plates, cutting each plate into equal two parts, then repeating operations from step one to step five, and carrying out 5 to 6 passes of accumulative composite rolling; and finally putting the plates after the accumulative composite rolling into a gas protective annealing furnace for thermal treatment, cooling the plates, and taking out the plates at room temperature to obtain the composite steel plate with the multilayer structure.

The invention relates to a method for preparing a target structure. The method comprises the following steps of: providing a target, namely chromium or a chromium alloy, and activating the surface of the target; forming a metal plated layer on a solder side of the activated target by a chemical plating process; and soldering the chemically plated target to a back board. By taking the metal plated layer formed on the solder side of a chromium or chromium alloy target by chemical plating as an intermediary, the soldered target and back board are firmly bonded and have higher bonding strength. The invention provides a process for steadily plating a metal layer on the surface of the chromium or chromium alloy target by the chemical plating and realizes industrial production.

The invention relates to a method for a composite centrifugal casting high-chromium steel roller. The invention is characterized in that a semi-steel intermediate transition layer is arranged between a high-chromium working layer and a nodular-cast-iron core. The steel roller is produced through the following steps: smelting; modifying the semi-steel intermediate transition layer and the external high-chromium cast steel respectively, and nodulizing and inoculating melted iron used for preparing a nodular-cast-iron core; carrying out centrifugal casting; casting the nodular-cast-iron core; and cooling at room temperature and carrying out heat processing. The semi-steel intermediate transition layer comprises the following chemical components in percentage by weight: 1.0-2.2% of C, 0.4-1.5% of Si, 0.4-1.5% of Mn, 0-0.1% of P, 0-0.03% of S, 0-0.2% of Cr, 1.0-2.0% of Ni, 0.2-1.0% of Mo and the balance of Fe. The method provided by the invention has the beneficial effects that the bonding strength of the high-chromium working layer and the nodular-cast-iron core is enhanced, and occurrences of bonding-layer stripping and roller breakage accidents of the high-chromium composite cast steel roller are avoided.