68results about How to "Evenly combined" patented technology

The invention provides a polycrystalline diamond material with a double-peak structure and a preparation method of the polycrystalline diamond material, and relates to the technical field of superhard materials. The polycrystalline diamond material comprises the following raw materials: nano onion carbon and micron graphite, and the preparation method comprises the following steps: weighing the nano onion carbon and the micron graphite, carrying out mechanical grinding treatment, fully mixing to obtain mixed powder, pressing the mixed powder with a mold, and wrapping with boron nitride to obtain a green body; and the blank is loaded into a high-temperature and high-pressure synthesis cavity for high-temperature and high-pressure synthesis treatment, then heat preservation and pressure maintaining treatment is carried out, cooling and pressure relief treatment are carried out, and the polycrystalline diamond material with the double-peak structure is obtained. According to the method disclosed by the invention, the grain size with a'double-peak structure 'is constructed in the polycrystalline diamond, so that the fracture toughness of the polycrystalline diamond is improved by more than two times while high hardness is maintained, the extremely-hard and high-toughness polycrystalline diamond is successfully synthesized, and a reference is provided for toughening of other ceramic materials.

The invention provides an aerosol in-situ jet printing forming system and method for an intelligent bearing embedded sensor. The system comprises a computer control module, a self-adaptive aerosol jet printing module, a time sequence curing module, a visual module and a five-axis motion platform, and the working mode of key components in the system is improved and designed according to the structural characteristics of a bearing. According to the method, the structural characteristics of the surface of the bearing structural part are identified to obtain the motion trail of the spray head under curved surface parameterization mapping, and atomized functional material micro-droplets are directly deposited on the surface of the bearing structural part point by point, line, surface and layer according to the preset trail according to the structure and material characteristics of a target sensor. And meanwhile, by reasonably controlling the curing time and the curing sequence, uniform combination of heterogeneous / homogeneous materials of the spray deposition interface is promoted, in-situ integrated manufacturing of the bearing embedded sensor is achieved, and technical support is provided for standardized application of the intelligent bearing.

The invention discloses a catalyst for improving discharge performance of a metal fuel cell through phase change of a rare earth induced manganese-based material and a preparation method, tetravalent rare earth cerium is doped into the manganese-based material through a hydrothermal method, uniform combination of cerium and manganese dioxide is realized in the process, crystal phase transformation of manganese dioxide is successfully induced, and the discharge performance of the metal fuel cell is improved. Beta-phase MnO2 which is stable but poor in electro-catalytic performance is converted into alpha-phase MnO2 with higher activity and better conductivity. The phase change greatly improves the electrochemical activity of the material. The number of active sites is insufficient due to the compact crystal structure of the beta-phase MnO2, and the open structure of the alpha-phase MnO2 increases the surface area and the reaction active sites, so that the catalytic performance of the oxygen reduction reaction is optimized.

The invention provides a preparation method capable of preparing high-purity ZrC powder on a large scale and ZrC powder.The preparation method comprises the steps that firstly, zirconium metal salt, deionized water, organic ligands and absolute ethyl alcohol are subjected to ultrasonic mixing, and a metal salt solution and an organic solution are obtained; pouring the organic solution into the metal salt solution to form a mixed solution, and ultrasonically removing gas in the solution; dropwise adding a small amount of ammonia water into the mixed solution, shaking, performing ultrasonic treatment to enable the solution to be uniform, and standing for a period of time to obtain metal organic gel; centrifugally cleaning the gel, and drying the cleaned gel in a drying oven at a certain temperature to obtain dry gel powder; and finally, putting the dry gel powder into a graphite crucible, and carrying out high-temperature cracking in a vacuum carbon tube furnace to obtain the high-purity ZrC powder. Impurities are prevented from being introduced into a traditional ball milling process, the metal organic gel can achieve uniform combination of metal ions and organic ligand atoms, the ZrC powder is endowed with the excellent characteristics of 50-200 nm nanoscale size, high purity, uniform distribution, spherical morphology and the like, and meanwhile the preparation method is short in period, low in temperature, low in cost, environmentally friendly in raw material and suitable for industrial production. The method is easy to control and suitable for large-scale preparation.

The invention relates to the technical field of flame-retardant nylon materials, and provides a halogen-free flame-retardant nylon material and a preparation method thereof, the halogen-free flame-retardant nylon material comprises the following components by mass: 80-120 parts of nylon, 30-40 parts of modified polyacrylate, 1-10 parts of modified nylon, 20-40 parts of a halogen-free flame retardant, and 0.1-5 parts of an auxiliary agent; the modified polyacrylate is a copolymer of phosphorus pentoxide, hydroxyl acrylate, acrylic acid, acrylate, glass fiber and antimony trioxide; the modified nylon is a copolymer of nylon and acrylate. The components have good affinity, a uniform and stable mixed system can be formed, the mechanical strength and flame retardant property of the nylon composite material can be obviously improved by introducing the components, the product is endowed with more excellent comprehensive performance, harm to the environment and human bodies can be avoided, the ecological friendliness is higher, and the nylon composite material is suitable for industrial production. The problems existing in the prior art are solved, and the method has important significance on development and further popularization of nylon products.

The invention relates to the technical field of rubber waterstops, and discloses a rubber waterstop suitable for a low-temperature environment of a tunnel in a cold region and a preparation method of the rubber waterstop. The rubber waterstop suitable for the low-temperature environment of the tunnel in the cold region is prepared from the following raw materials in parts by mass: 100 to 150 parts of ethylene propylene diene monomer, 5 to 15 parts of homopolymerized epichlorohydrin rubber, 20 to 40 parts of acrylate rubber, 1 to 3 parts of liquid nitrile rubber, 0.01 to 0.1 part of phthalic anhydride, 5 to 10 parts of nano graphene oxide, 1 to 3 parts of tetraethoxysilane, 1 to 2 parts of amino silane and 40 to 60 parts of reinforcing agent. 1-3 parts of an anti-aging agent, 1-5 parts of a plasticizer, 1-2 parts of a vulcanizing agent and 1-2 parts of an accelerant. The obtained water stop belt is excellent in mechanical performance, tensile strength, tearing strength and compression set at the low temperature of-40 DEG C are excellent, cracking is avoided at the low temperature, and the water stop belt can better adapt to the extreme environment.

The invention discloses a preparation method of a graphene (alias black gold) / high-entropy alloy composite material, and belongs to the field of novel structural materials. The method comprises the following steps: mixing graphene and N-methyl pyrrolidone (NMP), adding the mixture into ammonia water, putting the mixed solution into a microwave oven for radiation, carrying out electro-deposition on a graphene dispersion solution heated by microwaves, connecting a positive electrode with a steel sheet, connecting a negative electrode with a high-entropy alloy, stacking high-entropy alloy sheets subjected to electro-deposition together, putting the stacked high-entropy alloy sheets into a mold, and carrying out heat treatment to obtain the graphene / NMP composite material. And putting the mold into an induction coil, and regulating and controlling the temperature and the time to obtain the composite material. And finally, carrying out vacuum annealing on the composite material. The graphene and the high-entropy alloy are uniformly mixed and tightly combined by adopting lamination compounding, so that the problem of non-uniform structure in a traditional smelting method is avoided. Meanwhile, the graphene dispersion liquid can be efficiently prepared within a short time through microwave radiation treatment and can be stably dispersed in a solvent. The material has the characteristics of high hardness, corrosion resistance and the like.

The invention discloses a preparation method of high-entropy carbide-based metal ceramic, which comprises the following steps: step 1, preparing according to the molar ratio of a carbide addition phase, putting powder into a sand mill, and carrying out first ball milling; 2, carrying out secondary ball milling, adding a metal binder, carbon black, paraffin, rubber or polyvinyl alcohol and other binders into the mixed carbide powder, carrying out ball milling, mixing, and carrying out spray drying on the mixed powder after the ball milling is finished; thirdly, the powder is subjected to pressing forming, and the pressing pressure ranges from 50 MPa to 200 MPa; and fourthly, the pressed blank is degreased and sintered, and the high-entropy carbide-based metal ceramic is obtained. The high-entropy carbide-based metal ceramic material with the bending strength superior to 2100 MPa, the fracture toughness superior to 8.5 MPa.m < 0.5 > and the Rockwell hardness superior to 92.0 can be obtained, and the high-entropy carbide-based metal ceramic material can be widely applied to the fields of bearing materials, cutting tools, mold materials and the like.

The invention provides a green and environment-friendly flame-retardant cellulose material and a preparation method thereof. The green and environment-friendly flame-retardant cellulose material is prepared from the following components in parts by weight: 20 to 40 parts of bio-based cellulose, 60 to 90 parts of phosphate, 30 to 90 parts of urea, 5 to 10 parts of amino silicon oil microemulsion and 90 to 150 parts of melamine. The flame-retardant cellulose material prepared by the invention has excellent flame retardance, realizes waste utilization and environment-friendly production at the same time, adopts cellulose with a wide source, is low in cost, and meets the requirements of sustainable development; the flame retardant property of the cellulose is remarkably improved through synergistic modification. High-temperature and high-pressure conditions are provided through the hydrothermal reaction kettle, uniform combination of phosphate and cellulose molecules is promoted, the modification efficiency is improved, and excessive damage of high temperature to the cellulose molecular structure is avoided. Meanwhile, through the auxiliary effect of urea, the temperature required by the phosphorylation reaction is reduced, and the integrity of cellulose molecules is protected; the reaction activity of hydroxyl is improved, and the modification uniformity is promoted; the compatibility of the material and thermoplastic resin is improved.

The invention relates to the technical field of ceramic powder, in particular to high-performance ceramic composite spraying powder and a preparation method thereof.The preparation method comprises the steps that a carbon layer is deposited on the surface of nano silicon carbide powder, acid treatment is conducted, and modified nano silicon carbide powder is obtained; preparing aluminum oxide powder and zirconium oxide powder into a suspension; adding modified nano silicon carbide powder into the suspension, and filtering, washing, drying, ball-milling and sieving the formed precipitate to obtain a composite material; the composite material and silicon boride powder are fully mixed, and the high-performance ceramic composite spraying powder is prepared. According to the preparation method, the nano silicon carbide powder is subjected to deposition treatment and acid treatment in sequence, so that the nano silicon carbide powder, the aluminum oxide powder and the zirconium oxide powder can be fully mixed, dispersed and combined, the non-uniform dispersion of the nano silicon carbide powder caused by agglomeration is prevented, and then the silicon boride powder with relatively small particle size is added; the self-healing performance of the ceramic composite spraying powder on surface cracks is improved, so that the quality of the ceramic composite spraying powder is greatly improved.

The invention discloses a multi-layer composite component and a preparation method thereof and a wind power blade, the multi-layer composite component comprises the following layers: a) a PE film at least containing ultra-high molecular weight polyethylene, b) a fiber layer and c) an elastic layer, the fiber layer is arranged between the PE film and the elastic layer, and the fiber layer is at least partially embedded in the PE film and / or the elastic layer; the PE film and the fibrous layer are joined in a first process to form a laminated composite, and the elastic layer is joined to the other side of the fibrous layer opposite the PE film in a second process to form the multilayer composite member. The multi-layer composite component has comprehensive performance such as high interlayer bonding strength and overall mechanical strength and excellent fatigue resistance, and the wind power blade manufactured through the multi-layer composite component is simple in manufacturing process, low in cost and capable of being safely applied to the severe environment for a long time.

The invention relates to a flame retardant and a preparation method and application thereof, and relates to the technical field of flame retardants, the preparation method of the flame retardant comprises the following steps: adding hypophosphite, polyethylene glycol and a silane coupling agent into water, and stirring to obtain a first mixture; performing pulsed electric field treatment on the first mixture to obtain a second mixture; and filtering the second mixture, and washing and drying the obtained solid product to obtain the flame retardant. According to the invention, a material system composed of hypophosphite, polyethylene glycol and a silane coupling agent is modified by adopting a pulsed electric field technology, so that the physical properties such as particle size distribution and particle regularity of hypophosphite are remarkably improved, and the compatibility and flame-retardant effect of hypophosphite and a high polymer material are also improved; the defects of the existing hypophosphite flame retardant are overcome.

The invention belongs to the technical field of wire and cable production, and discloses a wire and cable coating process which comprises the following steps: S1, conductor treatment: selecting a conductor, and performing micro-nano roughening treatment on the surface of the conductor; s2, preparing an insulating material: selecting an insulating base material; by increasing the contact area between the conductor and the coating material (such as the insulating layer and the sheath), the physical binding force, namely the adhesive force, between the conductor and the coating material is improved, and the good adhesive force can ensure that the problem that the insulating layer falls off or the sheath cracks does not easily occur in the use process of the electric wire and cable, so that the service life of the electric wire and cable is prolonged. The reliability and the service life of the wire cable are improved; the roughening treatment also affects the electric field distribution on the surface of the conductor, the phenomenon of electric field concentration is reduced, the risk of insulation breakdown caused by electric field concentration is reduced, and meanwhile, the rough surface structure is beneficial to increasing the contact resistance between the conductor and the coating material, reducing current leakage and further improving the electrical performance of the electric wire and cable.

The portable graphene seedling raising shed has the advantages that the graphene composite support rod is adopted, the support rod is used as a heating device while supporting, the support rod itself is changed into an efficient and uniform heating body, stable and controllable heat supply is provided for the inside of the seedling raising shed, the spraying assembly arranged in the shed is convenient for watering and realizes intelligent control, the portable graphene seedling raising shed can be used for small-scale and family type seedling raising and cultivation in winter, has the characteristics of being light, capable of being quickly folded or stretched, and convenient for users to carry, transport and quickly deploy at different sites.

The utility model relates to the field of batteries, and provides a battery and an electric device. The battery comprises a battery cell, a substrate and a support table. And at least two battery monomers are arranged. The battery monomers have opposite first and second sides along the first direction, and the first side of each battery monomer is provided with an electrode terminal. In the first direction, the battery monomer with the largest size is a first battery cell, and the battery monomer with the size smaller than that of the first battery cell is a second battery cell. The substrate supports a second side of each battery cell. The supporting tables are arranged corresponding to the second battery cells, and the supporting tables are supported between the corresponding second battery cells and the substrate. Based on the structure, the distance between the electrode terminal of the corresponding second battery cell and the electrode terminal of the first battery cell can be reduced in the first direction through the supporting table, so that the electrode terminals of the battery monomers can conveniently construct an electric connection relation through the confluence component, and the assembly quality, the assembly efficiency and the yield of the battery can be optimized.

The application specifically relates to a preparation method of silver and metal mixed powder, and the silver and metal mixed powder is prepared by innovatively combining a chemical method and a physical method, the metal foil is combined with silver into a silver-coated metal foil by the chemical method, the silver-coated metal foil is extended to a thickness of 10-20 mu m by a rolling mill, the foil belt is impacted to form a powder by airflow crushing, and the silver and metal mixed powder meeting the particle size requirement is sorted out. Since the thickness of the silver layer of the extended silver-coated metal foil is basically consistent, the thickness of the metal layer is also basically consistent, at this time, each metal powder after crushing has silver, the silver layer and the metal are combined to form the silver and metal mixed powder, so that the silver and the metal can be uniformly mixed, and batch production can be realized.

The application provides a wear-resistant composite piercing mill head manufacturing method and a piercing mill head, and the manufacturing method comprises the following steps: S1, preparing a steel base head; S2, adopting a submerged-arc welding process to make a flux-cored wire cladded on a working cone surface and a nose end surface of the steel base head, so as to form a cladding layer with a thickness of 6-8 mm; and S3, pre-oxidizing the cladding layer of the steel base head at high temperature, so that the wear-resistant composite piercing mill head is obtained. The wear-resistant composite piercing mill head manufacturing method has a dense and uniform oxide film on the surface of the cladding layer of the piercing mill head, the oxide film is firmly combined with the cladding layer, and the existence of the dense and uniform oxide film can reduce the power consumption of a steel pipe piercing mill and prolong the service life of the piercing mill head.

The present invention relates to a high-strength PP plastic and a preparation method, and belongs to the technical field of polypropylene materials. The preparation method mainly includes the preparation of a polyphenylene sulfide solution, the preparation of a polyphenylene sulfide fiber loaded with modified nano-silicon dioxide, and finally the melt extrusion of various materials, thereby obtaining a high-strength PP plastic. The present invention loads the modified nano-silicon dioxide on the polyphenylene sulfide fiber, and cooperates with components such as γ-chloropropyltrimethoxysilane and maleic anhydride grafted polypropylene resin to jointly improve the performance of the polypropylene material, and enhances the cross-linking structure between molecular chains through chemical bonding and physical entanglement, thereby enhancing the interface compatibility and stress transfer efficiency, significantly improving the strength of the material, and optimizing the overall performance of the material.

The utility model discloses spraying equipment for tobacco shred preparation. The spraying equipment comprises a base; the tobacco shred storage box is placed on the base, and an opening is formed in the top of the tobacco shred storage box; the spraying assembly is arranged in the tobacco shred storage box, the spraying assembly is arranged in the circumferential direction of the opening, the spraying assembly comprises a fixing frame, a connecting arm and a spraying part, the first end of the fixing frame is connected with the inner wall, close to the opening, of the tobacco shred storage box, and the second end of the fixing frame is rotationally connected with the first end of the connecting arm; the spraying piece is arranged at the second end of the connecting arm; the stirring assembly is arranged in the tobacco shred storage box and used for stirring the tobacco shreds in the tobacco shred storage box; the driving assembly is arranged at the top of the tobacco shred storage box, and the driving assembly is connected with the connecting arm through the opening. According to the tobacco shred spraying device, the spraying piece can spray perfume on tobacco shreds in the tobacco shred storage box in all directions, it is guaranteed that the perfume and the tobacco shreds are evenly combined, and the quality of the tobacco shreds is guaranteed.

An injector and a welding method thereof, relating to the technical field of engine injectors. The injector comprises a support part and a cover plate arranged on the front of the support part; a plurality of concentrically distributed annular grooves are arranged on the covering surface of the cover plate, a plurality of annular convex ribs are arranged on the front of the support part and inserted into the annular grooves in a one-to-one correspondence, the plurality of annular convex ribs are concentrically distributed, and the annular convex ribs are fixedly connected with the annular grooves by a diffusion welding process to form a mixing chamber between adjacent annular convex ribs; a plurality of injection holes connected with the mixing chamber are arranged through the cover plate along the thickness direction; a first fuel chamber and a combustion-supporting chamber respectively connected with the mixing chamber are arranged in the support part, the first fuel chamber is used to introduce fuel into the mixing chamber; the combustion-supporting chamber is used to introduce an oxidant into the mixing chamber. The injector has a stable structure and a small change in overall flatness, and the connection strength and sealing of the welded joint are improved by the diffusion welding process, thereby ensuring the dimensional accuracy and shape accuracy of the injector, as well as the safety and reliability of the injector.

The invention discloses a lamination process of an AMB ceramic substrate and an FPC flexible circuit board, and relates to the technical field of semiconductors, and the lamination process comprises the following steps: preparing an AMB substrate; preparing an FPC (Flexible Printed Circuit) flexible board; pre-pressing and cleaning; performing vacuum pressing; performing laser cutting on the appearance; coating a functional coating; according to the lamination process of the AMB ceramic substrate and the FPC flexible circuit board, the positions of positioning holes of the AMB ceramic substrate and the FPC flexible circuit board are reserved in the design stage so that accurate positioning can be facilitated, the vacuum hot-pressing binding force with the FPC substrate is guaranteed through the AMB substrate pre-cleaning process before lamination, meanwhile, the filler of the coating is treated through long-chain alkyl silane, and therefore the coating quality is improved. And the moisture-proof and anti-permeation capacities of the coating are obviously improved. According to the invention, by optimizing the pressing process and functionalizing the protective coating, the packaging structure has excellent mechanical reliability and corrosion resistance at the same time.

The invention discloses a polyetherimide-ultraviolet light absorber composite film and a preparation method and application thereof, and the method comprises the following steps: adding a hydroxyl-containing ultraviolet light absorber into a diamine dispersion liquid to obtain a composite solution; bisphenol A type diether dianhydride is added into the composite solution in batches, stirring reaction is carried out, and composite sol is prepared; and preparing a composite film by using the composite sol, and carrying out imidization treatment on the composite film to prepare the polyetherimide-ultraviolet light absorber composite film. According to the method, a hydroxyl-containing ultraviolet light absorber is introduced, and the hydroxyl-containing ultraviolet light absorber and polyetherimide can form hydrogen bonds, so that chain segments are combined more tightly, molecular chain segments are increased, and relative movement of the chain segments is not easy to generate at high temperature, so that the thermal stability is improved, meanwhile, the weather resistance of the composite material is improved, and the service life of the composite material is prolonged. The method is simple to operate and efficient in reaction, and has wide application value.

The invention relates to the technical field of aluminum profile machining, in particular to aluminum profile positioning, drilling and tapping integrated equipment based on automatic drill bit replacement, which comprises a base provided with a clamping assembly for fixing an aluminum profile; the first driving part and the second driving part are arranged on the base and can move in the length direction of the base, a third driving part is connected to the first driving part, and a loading disc is rotationally installed on the second driving part; the locking assembly is connected with the loading disc, and the locking assembly can lock the loading disc in the circumferential direction, so that when the loading disc moves to the lower portion of the third driving part, a drilling tool arranged on the loading disc can be coaxial with a rotating base arranged on the lower portion of the third driving part; and the driving assembly is connected with the loading disc and the locking assembly, and the driving assembly can enable the locking assembly to release circumferential locking of the loading disc and drive the loading disc to rotate by a preset angle when the first driving piece and the second driving piece move close to each other, so that the positioning precision is improved.

The application discloses a kind of chopped carbon fiber reinforced fluorine-containing resin composite material and preparation method and application, belong to composite material preparation technical field, the application includes: to chopped carbon fiber is sequentially carried out surface activation treatment, homogeneity coating treatment and chemical bonding treatment, to be gradually structured interface bonding layer on the surface of chopped carbon fiber;The treated chopped carbon fiber is mixed with fluorine-containing resin matrix, and extrusion forming is obtained, and composite material is obtained.The application is sequentially carried out surface activation, homogeneity coating and the three-step synergistic modification of chemical bonding, first activation provides reaction site, then pass through homogeneity coating and eliminate the interface energy difference between fiber and matrix, finally pass through chemical bonding and lock interface, and gradually structured interface layer of strong combination, effectively solve the problem that chopped carbon fiber and fluorine-containing resin interface compatibility is poor, and easily peeling, realize the significant improvement of the mechanical properties of composite material.

A rear cylinder barrel is arranged at the rear end of a dyeing machine body, a front cylinder barrel is arranged at the front end of the dyeing machine body, the rear end of the front cylinder barrel is connected with a plurality of lobster joint elbow barrels, the rear ends of the lobster joint elbow barrels are connected with the rear cylinder barrel, and an adjusting inclined semicircular open barrel is arranged on the bottom face of the inner side of the rear cylinder barrel. An adjusting air cylinder is installed at the bottom of the adjusting inclined semicircular open barrel, the top of the rear end of the front cylinder barrel and the top of the rear end of the rear cylinder barrel are connected with a cloth conveying pipe, and a nozzle and a cloth conveying roller are arranged in the front cylinder barrel. By means of the mode, the cloth feeding distance can be shortened or prolonged according to the dyeing characteristics of different pieces of cloth, the internal cloth feeding conveying line can be adjusted, the cloth can be fed more smoothly according to the characteristics of the cloth, the situations of cloth collision and creases are reduced, and the cloth feeding efficiency is improved. The cylinder body structure of the rear cylinder barrel is adjusted by adjusting an inclined semicircular open cylinder, so that dyeing with a lower bath ratio is achieved, and energy conservation and consumption reduction are achieved.

The present invention relates to the field of tunnel construction, and in particular to a support material injection device and method based on the coordinated utilization of multi-source solid waste. It is not convenient to smooth the concrete and aggregate when the existing equipment supports the tunnel, and at the same time, some aggregates will rebound, making the concrete and aggregate layers not dense enough, thereby making the support effect of the tunnel not good enough. A support material injection device and method based on the coordinated utilization of multi-source solid waste, including a mobile loader and a conveying pump, etc.; the conveying pump is fixedly connected to the mobile loader. The rotation of the two driving motors will drive the rotating gear to rotate through the active gear, and the swing arm will swing upward along the mobile ring frame. The upward swing of the swing arm will drive the injection pipe and the smoothing roller to swing upward. The upward swing of the injection pipe will continue to spray the tunnel, and the upward swing of the smoothing roller will smooth the part of the tunnel that has been sprayed with aggregate and concrete, so that the support effect of the tunnel is better.

The application belongs to the technical field of modified copolymer nylon and specifically relates to a modified PA6 material and a preparation method thereof. The application aims to solve the problem of high moisture absorption and lack of high insulation of the existing copolymer modified PA6 material. The application mixes caprolactam and lauryl lactam to obtain a PA6 / 12 random copolymer; pre-blends modified graphene oxide, boron nitride nanosheet and polyamide oligomer to obtain a composite suspension; coats the PA6 / 12 random copolymer on the surface, feeds the coated PA6 / 12 random copolymer into an extruder, adds the composite suspension after complete melting, uniformly mixes the composite suspension and the PA6 / 12 random copolymer, adds a flame retardant aid, and finally extrudes to obtain the modified PA6 material. The modified PA6 material prepared by the application has low water absorption and good insulation, and is not prone to electric leakage and tracking in a high-temperature working environment.

The preparation method comprises the following steps: (1) taking aminobenzene sulfonic acid and trivalent metal salt, adding the aminobenzene sulfonic acid and the trivalent metal salt into deionized water and absolute ethyl alcohol, then adding sufficient ammonia water, and fully precipitating; (2) fully washing, centrifuging and drying the mixed solution containing the precipitate to obtain dried powder; and (3) fully grinding the dried powder, and calcining in a muffle furnace at high temperature to obtain the long-afterglow luminescent material. And (4) putting the high-temperature-resistant fibers or yarns into the pretreatment liquid for pretreatment, then taking out the pretreated fibers or yarns, putting the pretreated fibers or yarns into a dye vat, adding a dyeing solution containing a long-afterglow luminescent material to dye the fibers or yarns, performing reduction cleaning on the fibers or yarns after dyeing is completed, and then performing water washing and drying to obtain the high-temperature-resistant fibers or yarns. The long afterglow fiber or yarn is obtained. The long afterglow fiber or yarn prepared by the invention not only can keep stable luminescence performance in a high-temperature environment, but also can generate long afterglow at a high temperature.

The invention discloses a preparation method of a high-temperature-resistant fireproof cable, and relates to the technical field of cables, a fireproof inner layer is prepared from expanded graphite, hydroxyl-terminated polydimethylsiloxane, quartz powder, silicone oil, methyltriethoxysilane, gamma-aminopropyltriethoxysilane and dibutyltin dilaurate in parts by weight; the cable has the advantages that the expanded graphite can be expanded at high temperature to form a heat insulation layer, the content of the expanded graphite is low, the expanded graphite cannot damage the insulating material and the polyvinyl chloride sheath after expansion, temperature propagation can be effectively prevented, the fireproof capability of the cable is further enhanced, and the cable has good application prospects. The dibutyltin dilaurate can promote the reaction among the components, so that the performance of the fireproof inner layer is more stable, and silane materials such as hydroxyl-terminated polydimethylsiloxane, methyltriethoxysilane and gamma-aminopropyltriethoxysilane are utilized, so that the stability and durability of the fireproof inner layer can be improved.

The present invention provides a method and system for generating a voice-driven face image using a diffusion model, which relates to the field of AIGC technology, including: inputting driving audio and a partial face image; extracting features of the driving audio and the partial face image respectively to obtain audio features and image features; inputting the audio features and image features into a diffusion model to generate complete image features; inputting the complete image features generated by the diffusion model into a decoder to obtain a complete face image. The present invention makes full use of the diffusion model and feature fusion to achieve accurate and clear generation of a face image corresponding to the audio.