138 results about "Interfacial bond" patented technology

The invention relates to the field of optical display and material engineering, in particular to a silica gel integrated optical film with a 3D light splitting function and a manufacturing method of the silica gel integrated optical film. A silica gel integrated optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer, and the microstructure layer is combined on the surface of the transparent optical base material in an integrated forming mode. And the microstructure layer is an anhydrous silica gel-resin composite material obtained by combining organic silica gel with low refractive index and resin with high refractive index through an anhydrous chemical reaction system. The optical film obtained in the invention has excellent interface bonding stability and long-term reliability, the overall thickness of the optical film is small, the optical loss is reduced, the light transmittance is higher, and the overall transmittance can reach 93% or above. And the manufacturing process integration degree and the mold repeated utilization rate are high, the industrial batch production requirement can be met, and the excellent industrial application prospect is achieved.

The invention discloses a silane-crosslinked low-smoke halogen-free flame-retardant oil-resistant polyolefin cable material and a preparation method thereof. The method comprises the following steps: preparing a bio-based polyesteramide toughening phase which is pre-polymerized by castor oil-based polyamide and poly (butylene adipate-co-terephthalate) and is terminated by itaconic anhydride; the preparation method comprises the following steps: self-assembling phytic acid and melamine to wrap ammonium polyphosphate, so as to prepare supramolecular flame-retardant gel powder; the method comprises the following steps: grafting aramid pulp fibers by using a phosphorus-containing silane coupling agent to prepare a reactive liquid crystal reinforced phase; the preparation method comprises the following steps: blending and banburying the components with a hydrogenated styrene-isoprene-styrene block copolymer, an antioxidant and a peroxide cross-linking agent, carrying out dynamic vulcanization and interface bonding, and carrying out extrusion and electron beam irradiation to finally crosslink. An interpenetrating-topology network structure is formed in the prepared cable material, the crosslinking degree is larger than or equal to 82%, and the cable material is rapid in crosslinking, excellent in oil resistance, low in smoke and free of toxicity and is particularly suitable for super high-rise building hanging cables, deep sea exploration cables and new energy automobile liquid cooling cables.

The invention discloses a medical catheter surface strong interface bonding hydrogel coating method based on subsurface initiated polymerization. The method comprises the steps that firstly, a mixed solvent of an organic solvent and water is adopted for conducting swelling pretreatment on the surface of a catheter base material, so that polymer chains on the surface layer of the base material are relaxed; a solution containing initiator molecules is injected into the inner cavity of the catheter, so that the initiator is diffused and anchored in the subsurface area of the base material; preparing a hydrogel monomer solution containing a hydrophilic monomer, a cross-linking agent and a catalyst, and pouring the hydrogel monomer solution into the inner cavity of the catheter; and finally, sealing the two ends of the conduit, and initiating polymerization reaction under a specific temperature condition, so that the initiator anchored on the subsurface is decomposed to generate free radicals. The hydrogel coating and the catheter base material form a double combination effect of physical interlocking and chemical bonding through a subsurface initiated polymerization mechanism, the firmness and stability of the coating are remarkably improved, and the method is particularly suitable for modification of the inner surfaces of various medical catheters with complex structures.

The invention relates to the technical field of microelectronic devices, in particular to a single-molecule memristor-rectifier device based on supramolecular assembly and a preparation method thereof. According to the preparation method, the guest molecule B is covalently connected with the tail end of the graphene electrode pair, so that stable and tight interface bonding between the supramolecular functional molecule and the electrode can be ensured; and then soaking the graphene electrode pair connected with the guest molecule B in a solution containing the host molecule A and the guest molecule C to form a supramolecular functional molecule between the graphene electrode pair. The guest molecule C in the supramolecular functional molecule has intrinsic oxidation-reduction activity, and the molecular structure of the guest molecule C can generate a reversible electron gain and loss process, so that controllable and reversible adjustment of charge distribution in the molecule is realized. Under the action of an electric field, through the reversible oxidation-reduction reaction of the guest molecule C, significant changes of intramolecular charge distribution and electron transmission characteristics are triggered, and finally reliable switching of high and low resistance states of the device is achieved.

The invention provides a dynamic load-oriented brazed diamond bonding strength testing device and method. The dynamic load-oriented brazed diamond bonding strength testing device comprises a base, a test framework, a self-adaptive sample holding unit, a data acquisition unit and a visual auxiliary alignment unit, the self-adaptive sample holding unit realizes stable clamping and angle adjustment of a sample through a rotatable platform, a translation bottom table, a hydraulic clamping cylinder and an angle adjusting piece; the data acquisition unit acquires a shear force-displacement curve by using a fiber bragg grating sensor, and a high-speed camera records a fracture process; and the vision-assisted alignment unit (high-resolution industrial camera) is used for calibrating the positions of the sample and the pressure head. The method comprises the steps of intelligent pre-characterization clamping, variable load dynamic shear testing, in-situ fracture mode judgment, multi-mode effective fracture area measurement and multi-dimensional strength characterization. According to the invention, the sample positioning and clamping stability is improved, the loading interference is reduced, the interface bonding strength is quantitatively and reliably represented under the dynamic load, and the test accuracy and repeatability are guaranteed.

The invention discloses a low-temperature-impact-resistant high-strength bolt for a high-cold railway and a heat treatment method of the low-temperature-impact-resistant high-strength bolt. The bolt is of a special three-layer structure of a base body, a bionic nanometer laminated layer and a high-entropy alloy nitriding layer, wherein the grain size of the base body reaches the ASTM8 level or above; the bionic nano laminated layer is formed by alternately depositing TiN and VC, and the thickness of a single layer is less than 50nm; the high-entropy alloy nitriding layer is made of AlCoCrFeNiTi, the thickness is larger than 50 microns, the heat treatment method comprises the steps of grain refinement pretreatment, lamination preparation through magnetron sputtering, high-entropy alloy laser cladding, electromagnetic field assisted nitriding, oil quenching, cryogenic oscillation, tempering and the like, and intelligent quality control means such as a machine learning model, sound pressure feedback and image recognition are integrated. According to the scheme, the impact energy of the bolt at the temperature of minus 60 DEG C is higher than 55 J, the tensile strength is larger than 1200 MPa, the surface hardness is not lower than 1200 HV, the interface bonding critical load is higher than 80 N, and the problems of low-temperature brittle fracture, obdurability contradiction and quality consistency of the high and cold bolt are solved.

The present application relates to geotechnical engineering technical field, specifically to a kind of slope stabilizing mechanism and its construction technology, wherein, the slope stabilizing mechanism includes moving assembly, moving assembly includes expansion part and drive structure.Expansion part has the contraction state along the radial contraction of anchor rod and the expansion state along the radial expansion of anchor rod.Drive structure drives expansion part to move on anchor rod axially, and control expansion part switches between contraction state and expansion state.When expansion part is in expansion state and moves along anchor rod axially, the hole wall of drilling can be continuously wiped, the low-intensity, low-permeability mud skin structure formed on the surface of drilling hole wall due to drilling construction is broken, the loose drill cuttings and collapse on the surface of hole wall are removed, so that the surface roughness of drilling hole wall is improved, and then the interfacial bond strength between drilling hole wall and grouting body is enhanced, to avoid mud skin, drill cuttings and other impurities to hinder the effective combination of grouting body and hole wall.

This utility model relates to a composite copper foil conductive layer structure, comprising a substrate layer, a transition layer, and a conductive layer. The conductive layer is located on the surface of the substrate layer, and the transition layer is located between the substrate layer and the conductive layer. Micropores are formed on the surface of the substrate layer by plasma etching. The transition layer is formed on the surface of the substrate layer by magnetron sputtering. Cross-linked mesh grooves are formed on the surface of the conductive layer by laser engraving or chemical etching. This structure, through a multi-layer composite design, provides mechanical support through the substrate layer, enhances interfacial bonding through the transition layer, and optimizes conductivity through the conductive layer. By combining a lightweight substrate with a highly conductive metal layer, a balance between high strength, high flexibility, and excellent electrical performance is achieved.

This invention relates to the field of cement technology, specifically to a fiber-reinforced high-strength cement pole and its preparation method. The pole comprises a steel wire skeleton and a conical annular pole body covering its outer circumference. The pole body is formed by centrifugal molding and curing of a cement-based composite material containing interfacially pre-complexed basalt chopped fibers. The interfacially pre-complexed basalt chopped fibers are obtained sequentially through alkaline activation, silane-nano silica treatment, polycarboxylate segment grafting, and calcium ion pre-complexation, and are added to the slurry after the cementitious material is initially moistened and before the aggregate is added. This method improves the dispersibility and interfacial bonding stability of the basalt chopped fibers in a low water-cement ratio cement matrix, thereby enhancing the pole's compressive, tensile, crack, shrinkage, and freeze-thaw resistance.

This invention discloses a bimetallic composite self-lubricating bushing and its preparation method, comprising an outer layer and an inner layer. The outer layer is made of steel, and the inner layer is made of copper alloy. The inner wall of the outer layer is provided with multiple mating grooves, which are arranged in multiple layers along the axial direction of the outer layer. Adjacent mating grooves are spaced apart, and each layer includes multiple annularly spaced mating grooves. The inner layer is located within the mating grooves. Each mating groove includes a tip and a tail. The tips of adjacent mating grooves face opposite directions, and the distance between two adjacent mating grooves is the same as the groove width. The multi-layer mating groove structure of this invention, through centrifugal casting, achieves bimetallic interlocking and increases the metallurgical bonding area of ​​the staggered triangular straight mating groove structure with adjacent layers of tips facing opposite directions, significantly improving the interfacial bonding force of the bimetallic composite bushing.

This application provides a rubber composition for stator lining and a motor assembly, relating to the field of rubber material technology. The rubber composition for stator lining, by weight, comprises: 100 parts of nitrile rubber, 10-14 parts of plasticizer, 60-70 parts of reinforcing component, 1-5 parts of silane coupling agent, and 10-15 parts of vulcanizing component; wherein, based on the weight of the nitrile rubber, the acrylonitrile content in the nitrile rubber is 30%-40%. The technical solution of this application can effectively solve the problems of insufficient adhesion strength and poor interfacial bonding stability between the stator lining layer and the metal housing in the prior art, which leads to cracking and delamination of the stator during use.

The present invention relates to the technical field of the preparation of materials and aims to solve the problems of interface separation and relatively weak oxidation resistance under complex working conditions caused by insufficient interfacial bonding force of existing carbon / carbon composite materials. To this end, the present invention provides a carbon / carbon composite material and a preparation method therefor. The carbon / carbon composite material comprises, in mass percentages, 40-55% of polyacrylonitrile-based carbon fibers, 10-25% of pitch-based carbon fibers, 8-20% of nano silicon dioxide-grafted carbon fibers, 8-20% of bio-pitch, 8-15% of a nanographene-modified phenolic resin, 3-6% of silicon carbide whiskers, 2-4% of zirconium boride nanoparticles, 2-4% of graphitized carbon fibers, and 1-3% of a natural plant extract antioxidant. The carbon / carbon composite material of the present invention can provide stable interfacial bonding force and significant oxidation resistance, thereby ensuring the structural integrity and mechanical property stability of the material when subjected to a variety of complex stresses such as tension, compression, bending, and shear, and broadening the application range of the material in the field of high-temperature oxidation resistance.

The invention relates to 200 light, thin and wear-resistant underpants fabric, and belongs to the technical field of fabric. A self-made antibacterial chain extender participates in preparation to obtain modified spandex filaments, and then the modified spandex filaments and cotton fibers are made into the underpants fabric; the quaternary ammonium salt of the antibacterial chain extender can be combined with bacterial cell membranes and interfere cell metabolism, so that efficient bacteriostasis is realized; the flexible long-chain alkyl group has a plasticizing effect, the elasticity loss of the fabric after liquid ammonia finishing is relieved, an amido bond and a cotton fiber hydroxyl group form a hydrogen bond, the interface bonding is enhanced, the layering of a spandex filament and a cotton fiber is avoided, a polycyclic aromatic fused ring and the amido bond form a conjugated system, an intermolecular strong hydrogen bond is matched, the high-temperature stability of the spandex is improved, and the methoxy group can consume chlorine; a conjugated system stabilizes nitrogen-hydrogen bonds, condensed ring steric hindrance hinders chlorine attack, chlorine resistance of the fabric is enhanced, underpants are not prone to loosening and deformation after being worn for a long time, and elasticity and wrapping feeling are kept for a long time.

The invention belongs to the technical field of polymer composite materials, and relates to a cyanate ester high-wave-transparent composite material as well as a preparation method and application thereof. After a mixture of hollow glass microspheres and silicon dioxide is coated by polyphenyl ether with hydroxyl by adopting supercritical carbon dioxide fluid, polyphenyl ether PPO with hydroxyl is foamed on the surface of an inorganic material to form a porous structure. And then compounding the pretreated filler with a cyanate ester resin system, and carrying out curing molding to obtain the composite material. The porous structure can effectively toughen a matrix, hydroxyl on the surface of the porous structure can react with cyanate ester groups, the interface bonding force and reactive compatibility of inorganic filler and the resin matrix are remarkably improved, and finally the organic-inorganic hybrid material with interpenetrating polymer chains and the porous structure is formed. According to the prepared composite material, the mechanical property, especially the toughness, is remarkably improved while the excellent wave-transparent performance is kept, and the composite material is suitable for wave-transparent parts such as high-performance radomes and antenna windows.

This invention provides a composite structural component made of thermosetting carbon fiber composite material and plastic, and its preparation method, relating to the field of composite material technology. This invention achieves an effective connection between the thermosetting carbon fiber composite material and the plastic mounting structure by introducing a PC / ABS composite film between the thermosetting carbon fiber composite material and the plastic mounting structure, combined with co-curing molding and subsequent injection molding processes. Specifically, by mixing polycarbonate and acrylonitrile-butadiene-styrene copolymer at mass ratios of 30%-40% and 60%-70%, the composite film possesses both good temperature resistance and interfacial compatibility. Polycarbonate can form a good melt bond with the plastic material during subsequent injection molding, while the acrylonitrile-butadiene-styrene copolymer facilitates the formation of a stable interfacial bond with the thermosetting carbon fiber composite material during co-curing, thereby constructing a transition layer between the two materials and achieving a stable connection between the thermosetting carbon fiber composite material part and the plastic mounting structure.

The application relates to a preparation method of a flame-retardant modified polyisocyanate, and belongs to the technical field of polyurethane elastomers. Nano-composite flame retardants are chemically grafted through the reaction of hydroxyl groups and isocyanate groups in polyisocyanate segments, can be uniformly dispersed in a hydrophilic system, and avoid agglomeration and sedimentation caused by physical mixing. Not only is the dispersibility of the nano-composite flame retardants in polymers improved, but also the interfacial bonding force between the two is improved. 2,2-dimethylol propionic acid is covalently grafted to the polyester side chain of the polyisocyanate through the esterification reaction of hydroxyl groups, pyromellitic anhydride and trimethylolpropane, is converted into a carboxylate after neutralization, and the dispersibility in water is improved. The branched main chain of the comb-shaped polyisocyanate and the side chain polyester unit form a large steric hindrance, further weaken the van der Waals force between molecules, enhance the repulsion between particles, avoid molecular aggregation, and make the flame-retardant modified polyisocyanate form a stable and uniform dispersion liquid in deionized water.

The invention discloses foamed ceramic surface protective glue and a preparation method thereof, and belongs to the field of protective glue. The coating comprises the following components in percentage by weight: 20%-45% of organic modified silica resin, 10%-25% of a polyamide prepolymer, 10%-30% of alumina sol, 3%-10% of a nano-silica dispersion liquid, 1%-5% of a titanate coupling agent and a solvent which is a mixture of isopropanol and deionized water and accounts for 10%-20% of the total weight. The preparation method comprises the following steps: S1, mixing the silica resin and the polyamide prepolymer, stirring at 60-90 DEG C for 2-4 hours, and performing nitrogen protection; s2, mixing the aluminum oxide sol with the nano silicon dioxide dispersion liquid, adjusting the pH value to 4-6, and stirring for 30-60 minutes to form an inorganic sol system; s3, mixing the two systems under the pressure of-0.08 to-0.09 MPa, adding a titanate coupling agent, and stirring for 1-2 hours at the speed of 200-400 rpm; and S4, carrying out vacuum degassing on the composite glue solution for 10-20 minutes, curing at 100-150 DEG C for 2-3 hours, and carrying out cooling molding. The coating has the beneficial effects of excellent interface bonding force, high-temperature stability, crack resistance and wear resistance.

The invention relates to the technical field of paper printing processing, in particular to a coating liquid for improving the adhesive force of printing ink as well as a preparation method and application of the coating liquid. The water-based adhesive is prepared from the following raw materials in parts by weight: 25-30% of acrylic resin, 45-50% of a polyurethane-vinyl acetate-acrylate copolymer emulsion, 4-8% of a cellulose acetate butyrate resin emulsion, 2-5% of a composite surfactant and the balance of water, wherein the composite surfactant is prepared from C6-12 short-chain fatty alcohol, polyvinyl alcohol and sulfonate; according to the coating liquid, the interface bonding force between ink and paper can be improved, and the problems of poor adhesive force, ink falling and the like are solved. The drying rate of the drying agent can adapt to a high-speed flexographic printing or gravure process with the production line speed higher than 150 m / min, and set-off and adhesion faults caused by insufficient drying are effectively avoided. And under the storage or transportation condition that the relative humidity is larger than 75%, the after-tack phenomenon is prevented, and the strict requirement for special paper printing treatment is comprehensively met.

The application discloses an interface-locked anti-swelling hydrogel coating mesh membrane and a preparation method and application thereof, and comprises the following steps: growing a tin dioxide particle layer on the surface of a stainless steel filter mesh in situ, depositing a polydopamine coating on the tin dioxide particle layer, coating an anti-swelling hydrogel coating on the polydopamine coating, and preparing the interface-locked anti-swelling hydrogel coating oil-water separation mesh membrane through heat curing and freeze-thaw cycles; the polydopamine in the mesh membrane has adhesion, and cooperates with sulfuric acid and [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl) ammonium hydroxide to induce the Hofmeister effect, so that polyvinyl alcohol molecular chains are dehydrated and crystallized, a high-physical-crosslinking anti-swelling hydrogel coating is formed, strong interface bonding is provided, the micro-nano rough structure constructed by the tin dioxide particles and the introduced hydrophilic substances are combined, the problems of easy excessive swelling and interface delamination of the hydrogel coating oil-water separation mesh membrane are overcome, and long-acting and high-performance oil-in-water emulsion separation can be realized.

The invention relates to a slow-release pesticide preparation containing modified montmorillonite and application of the slow-release pesticide preparation, and belongs to the technical field of pesticide preparations. Nano silicon dioxide and montmorillonite are mixed and calcined to form a rigid porous framework, then a complex generated by ferroferric oxide and chitosan is loaded on the surface of the composite framework through physical adsorption and interface bonding, and the slow-release pesticide preparation containing modified montmorillonite is obtained. The preparation method comprises the following steps: modifying montmorillonite to form modified montmorillonite, carrying out surface functionalization treatment with a silane coupling agent to enable the modified montmorillonite to cooperate with a polylactic acid-glycolic acid copolymer to form a compact shell layer, wrapping a pesticide inside, and carrying out selenylation treatment to form a composite structure of a rigid structure and the shell layer, so that the problem of weak mechanical strength of a traditional sustained release preparation is solved; the rigid framework can resist extrusion of field soil, the compact shell layer and the selenylation layer synergistically resist rain wash, and meanwhile, the layered barrier property of the montmorillonite and the antioxidant property of the selenylation layer form synergistic protection, so that the pesticide preparation still has a good retention rate under long-time ultraviolet irradiation, and the stability of the preparation in a complex field environment is remarkably improved.

The invention discloses activated phosphogypsum-polyurethane composite modified asphalt and an ultrasonic synergistic preparation method thereof, and belongs to the technical field of new materials for road engineering. According to the modified asphalt, matrix asphalt is used as a substrate, two-component polyurethane, phosphogypsum subjected to three-step activation treatment, a coupling agent and nano SiO2 are added, and the activated phosphogypsum is subjected to water washing, calcination at 500-600 DEG C and silane coupling agent grafting pretreatment, so that the compatibility with an organic phase is effectively improved; according to the preparation method, an ultrasonic and high-speed shearing synergistic process is adopted, uniform dispersion of all the components and full crosslinking of polyurethane are synchronously realized, and the high and low temperature performance, the anti-aging performance and the interface bonding force of the modified asphalt are remarkably improved in combination with the synergistic effect of nano SiO2. The core pain points of non-uniform phosphogypsum dispersion, insufficient polyurethane crosslinking and poor compatibility in the prior art are solved, resource utilization is realized, the process operability is high, and the road construction requirements are met.

This invention discloses a self-adhesive hydrogel photoelectrode, array, device, application, and evaluation method. The self-adhesive hydrogel photoelectrode comprises a self-adhesive hydrogel optical fiber and at least one flexible fiber electrode. The optical fiber has a core-skin structure; the skin is composed of adhesive polymers such as polyvinyl alcohol, polyacrylic acid, and polydopamine, while the core is a transparent hydrogel. The flexible fiber electrode comprises conductive materials such as graphene oxide, carbon nanotubes, and polypyrrole. The flexible fiber electrode is directly integrated onto the surface of the optical fiber through the adhesion of the fiber skin, forming a heterogeneous structural unit integrating optical transmission and electrical conduction. This technology relies on a dynamic interface bonding mechanism to achieve stable and reconfigurable heterogeneous integration in a humid environment. The device simultaneously possesses low optical loss, high conductivity, strong tissue adhesion, and excellent biocompatibility, making it suitable for implantable neural modulation and signal acquisition, in vitro testing, and interface reliability assessment.

An intelligent detection system and method for determining the interfacial bond strength of pump-type fixed-length anchorages are disclosed. The system comprises: a sample-accommodating space within a load-bearing box; a transparent anchoring substrate housed within the box; a hollow anchor rod anchoring section inserted into a drilled hole; a through-cylinder jack fitted onto a pre-tightening section; a guide support sleeve and a top-mounted fixing nut applying axial restraint to the through-cylinder jack; a pump-type anchoring mechanism connected via pipeline to the grouting port of the hollow anchor rod; and an intelligent detection mechanism including a pressure sensor, an acoustic emission sensor, a laser emitter, and a high-speed camera, forming an integrated multi-source synchronous monitoring network. The method involves: preparing the transparent anchoring substrate, drilling holes and inserting hollow anchor rods, pumping grouting for curing; assembling a pull-out loading system, deploying the multi-source monitoring system, applying a pre-tension force followed by uniform loading, collecting various data, and analyzing and evaluating the bond-slip constitutive relationship and failure mechanism of the anchorage interface. This invention can accurately obtain the interfacial mechanical parameters under different anchoring parameters.

The invention provides an ionic liquid modified aluminum-doped zinc oxide filler and modified fluororubber, a novel core-shell structure composite filler AZO (at) Ils is synthesized by innovatively adopting ionic liquid assisted coprecipitation, and the unique structure can realize high-efficiency stress transfer through strong interface bonding; and the continuous carbonaceous shell layer constructs an efficient electron transmission path. The fluororubber and AZO-coated ILs are mechanically blended to prepare the FKM / AZO-coated ILs composite material, the mechanical property, the electrical property and the thermal property of the composite material are remarkably improved, an innovative thought and an effective solution are provided for design and development of the high-performance and multifunctional fluororubber composite material, and the FKM / AZO-coated ILs composite material has huge application potential in the fields of aerospace, military affairs, semiconductor manufacturing and the like.

This application relates to the field of engineered wood panel manufacturing technology, and discloses a flexible, shapeable technological board and its preparation method. The technological board comprises two layers of reconstituted decorative veneers and a modified polyolefin adhesive film layer located between them. The adhesive film layer is made of metallocene propylene-based elastomer, polyolefin elastomer, maleic anhydride-grafted polyolefin initiator, crosslinking aid, and silane coupling agent. The preparation method includes: coating the surface of resin particles with liquid-phase additives, and obtaining an adhesive film with latent reactive activity through low-temperature extrusion casting; stacking the veneers and adhesive film layers, initiating crosslinking reaction and interfacial bonding through high-temperature hot pressing, and then holding the pressure and cooling for shaping. This invention solves the problems of high formaldehyde content and brittleness of traditional adhesives and poor heat resistance of ordinary thermoplastic films. The resulting board has excellent flexibility, heat creep resistance, and water-resistant bonding strength, meeting the requirements for irregular curved surface shaping.

The invention provides a modified polyether-ether-ketone resin composite material as well as a preparation method and application thereof, and belongs to the field of high-molecular polymer materials. The modified polyether-ether-ketone resin / glass fiber composite material with a continuous chemical gradient interface is prepared through the interface bonding design of the polyether-ether-ketone oligomer containing the phenylacetylene functional group, the respective plasticizing and co-extrusion composite process and the reverse gradient structure design with the hard outside and the tough inside; the composite material is used for a high-performance robot exoskeleton device, and the problems that the strength and toughness of a traditional composite material are difficult to maximize at the same time, layers of a multi-layer or gradient material are easy to strip and lose efficacy, and a high-performance complex component is tedious in preparation process and low in efficiency are solved. The composite material provided by the invention has excellent mechanical properties and anti-aging and anti-fatigue properties, shows certain heat resistance during high-temperature heating, and shows great application potential in the field of high-end medical devices.

The invention discloses a preparation method of a waste fiber thermoplastic composite material, and belongs to the technical field of biomass conversion material preparation. According to the invention, a core process combining fiber entanglement and hot melting is constructed, the melt-blown PE superfine fiber is innovatively adopted as the adhesive, the melt-blown PE superfine fiber is uniformly adhered to the waste fiber in all regions due to the huge specific surface area and excellent permeability, and the problem that the mechanical property of the plate is fluctuated due to non-uniform coating of the traditional chemical adhesive is solved. According to the method, no solvent is added in the whole process, and VOCs emission is fundamentally eradicated. Particularly, air or oxygen plasmas are introduced to carry out on-line treatment on the opened fibers, so that the industrial bottleneck that the interface bonding force of inert fibers such as polypropylene is insufficient is effectively solved, and the mechanical strength and long-term durability of the plate are remarkably improved. The method is simple in process, environmentally friendly and efficient, the obtained board is excellent in performance, and a new way is provided for high-value utilization of waste textiles.

The invention relates to a method for producing carbon fiber reinforced tubular pipe with a polymer matrix, and for bonding metal parts to both ends of the pipe to increase durability and provide long-term performance and safety advantages.

The application discloses a two-pass rolling forming high-interface bonding strength metal laminated composite and a method, and belongs to the technical field of metal laminated composite preparation. The blank is subjected to softening annealing, and the surface to be compounded is polished. After the blank is stacked, the first-pass rolling is performed, the second-pass rolling is performed, and finally, the short-time diffusion heat treatment is performed, so that the high-interface bonding strength metal laminated composite is obtained. The two-pass rolling forming is adopted, so that the rough surface to be compounded is closely attached, the hardened layer and the oxidized layer at the interface are fully broken and refined, the composite interface with high interface bonding rate is obtained, the synchronous and rapid diffusion of elements on the whole interface is facilitated by the diffusion heat treatment, the uniform diffusion layer is obtained, the generation of the interfacial intermetallic compound is greatly reduced or avoided, the bonding strength of the composite interface is greatly improved, the diffusion heat treatment temperature is significantly reduced, the diffusion heat treatment time is shortened, and the production cycle is short, the cost is low, and the energy is saved, and the like.

This invention relates to a wear-resistant and high-temperature resistant composite coated band saw blade, its preparation method and application. Through the synergistic optimization of the three-layer coating structure and composite deposition process, it fundamentally breaks through the bottleneck of the existing technology and has the following advantages: (1) Gradient transition layer: Through the composition gradient design of TiN / AlTiN / HfN, the difference in thermal expansion coefficient between the matrix and the core layer is matched, significantly improving the interfacial bonding force and effectively alleviating the thermal stress concentration during high-temperature sawing; (2) Superhard core layer: PcBN is used as the wear-resistant skeleton, HfC is used as the toughening phase, graphene is used as the interfacial reinforcement phase, and Ti-Cr-Ni alloy is used as the bonding phase to achieve the multi-effect synergy of "superhard + toughening + high-temperature oxidation resistance"; (3) Self-lubricating surface layer: The composite coating is used as a friction reduction barrier to reduce the friction coefficient to below 0.12, while isolating oxygen penetration and further improving the high-temperature oxidation resistance of the coating.