3516 results about "Composite film" patented technology

The invention discloses a wafer composite film and a preparation method thereof, and belongs to the technical field of semiconductor preparation. The method comprises the following steps: (1) performing hydrogen ion or hydrogen-helium mixed ion implantation on a piezoelectric wafer to obtain an implanted wafer, wherein the implanted wafer sequentially comprises a thin film layer, an implanted layer and a residual layer; (2) sequentially forming a defect layer and an isolation layer on the supporting substrate; (3) bonding the isolation layer and the thin film layer of the injected wafer to obtain a bonding body; and (4) laser is adopted to heat the injection layer, then annealing heat treatment is carried out on the bonding body to achieve complete stripping, polishing and cleaning of the film, then the wafer composite film is obtained, the wavelength of the laser is 100-700 nm, the power of the laser is 50 mw to 100 w, and the scanning speed of the laser is 10-50 mm / s. According to the method, complete stripping of the composite film and combination of laser and thermal annealing processes can be effectively achieved, the method has high process stability, the yield of the composite film can be greatly improved, and the processing time cost of the composite film is shortened.

The invention provides a high-barrier fresh-keeping low-temperature heat-sealing composite film and a manufacturing process and application thereof, the composite film sequentially comprises a heat-sealing layer, a barrier layer, a reinforcing layer and a surface treatment layer from the inner layer to the outer layer, and the layers are bonded through bonding layers. The heat-sealing layer is prepared from modified polyethylene, polypropylene and a heat-sealing auxiliary agent, and the barrier layer is made of a composite material of nano aluminum oxide, polyvinylidene fluoride and an ethylene-vinyl alcohol copolymer. The enhancement layer is a polyester film, and the surface treatment layer is subjected to corona treatment. The composite film is prepared through a specific manufacturing process, and the specific manufacturing process comprises the steps of preparation of the heat sealing layer and the blocking layer, compounding, curing treatment, surface treatment and the like. The composite film disclosed by the invention has excellent barrier property and low-temperature heat-sealing capability, is suitable for vacuum packaging or modified atmosphere packaging of foods, and effectively prolongs the fresh-keeping period and the shelf life of the foods.

The invention relates to the technical field of film packaging, in particular to a PA-EVOH multi-layer co-extrusion film, a preparation method thereof and a composite film. The PA-EVOH multi-layer co-extrusion film comprises a first functional surface layer, a first secondary surface layer, a core layer, a second secondary surface layer and a second functional surface layer, the thickness of the core layer is 13%-40% of the total thickness of the film layer, the melting point of the adopted PA resin is 215-225 DEG C, the melting point of the EVOH resin is 164-183 DEG C, and the ethylene content is 32-44 mol%. The PA-EVOH multi-layer co-extrusion film and the composite film thereof have high barrier property and thermal stability, and good transparency and apparent quality, and can be used for pasteurization or poaching sterilization food packaging. The invention further provides a preparation method which is used for manufacturing the PA-EVOH multi-layer co-extrusion film, the film layer structure and the film layer thickness proportion are optimized, and better physical comprehensive performance and processing performance are achieved.

The invention relates to the technical field of battery module detection, and discloses a high-temperature detection method and device for a composite film for a battery module, and the device comprises a detection assembly, a cleaning assembly, and a conveying assembly used for guiding the composite film to pass through a detection box body. The detection assembly comprises a heat source assembly and two groups of light source receiving assemblies and light source emitting assemblies which are respectively distributed at the front part and the rear part of the heat source assembly, the light source emitting assemblies emit strip-shaped light beams upwards, and the strip-shaped light beams penetrate through the composite film and are received by the light source receiving assemblies; according to the scheme, the transverse deviation of the film is inhibited in a high-temperature test through the directional deviation correction of the threaded telescopic sheet and the negative-pressure scrap recovery system, meanwhile, the scraping brush and the negative-pressure pump are linked to remove attachments on the surface of the carrier roller, the detection environment is prevented from being polluted by the softened and molten film, and the same film sample is supported to be continuously subjected to a contrast experiment at multi-gradient temperature.

The invention discloses a high-barrier degradable composite film and a preparation method thereof, and belongs to the field of film manufacturing. 15 to 30 parts of PBAT; 15 to 30 parts of PPC; 1 to 10 parts of montmorillonite; 0.2 to 1 part of an epoxy chain extender; 0.2 to 0.5 part of an aliphatic alcohol chain extender; and 1.5-15 parts of a low molecular weight aliphatic polyamide substance. According to the invention, biodegradable materials PLA, PBAT and PPC with excellent performance are selected as base materials, and a certain amount of auxiliary agents are added to modify and prepare the high-barrier degradable composite film. The prepared composite film has the advantages of high strength, high toughness, high barrier property, low cost, high biodegradability and the like. Besides the field of mulching films, the film can also be widely applied to high-end packaging fields with high barrier property requirements, such as packaging of high-tech fine instruments, food and medicine industries and the like, and the preparation method is simple, economical and environment-friendly.

The invention discloses an MXene / PVDF photo-thermal composite film for seawater evaporation, and belongs to the technical field of solar interface water vapor conversion. The photo-thermal composite film is prepared by the following steps: blending an MXene dispersion liquid and PVDF (Polyvinylidene Fluoride) to obtain a film casting liquid, and carrying out blade coating to prepare the film; the photothermal conversion material MXene is a dispersion liquid of Ti < 3 > C < 2 > T < x > in water; and the photothermal conversion material MXene is obtained by etching Ti3AlC2 by using HCl + LiF (HCl + LiF). The photo-thermal composite film is prepared by blending MXene and PVDF, the influence of introduction of MXene on the hydrophilic-hydrophobic property and photo-thermal conversion performance of the MXene / PVDF composite film is explored, MXene has good photo-thermal conversion performance and hydrophilicity, PVDF as a common film material has hydrophobicity, and the MXene / PVDF composite film has good photothermal conversion performance and hydrophilicity. And the two are combined, so that the composite film can automatically float on the water surface for interface photothermal conversion while absorbing water. The MXene / PVDF composite film is prepared by adopting a blade coating method, so that the whole process is relatively simple, the film structure characterization and the film performance test are convenient to carry out, and a theoretical and practical basis is provided for the subsequent construction and application of a seawater evaporator.

The invention discloses a polyvinyl alcohol composite film as well as a preparation method and application thereof in food coloring detection. The polyvinyl alcohol composite film is prepared from raw materials including phenylboronic acid modified carbon dots and polyvinyl alcohol through a thermocuring reaction, a phenylboronic acid group on the surface of the phenylboronic acid modified carbon dot and polyvinyl alcohol form a reversible covalent bond crosslinking point based on boric acid ester so as to form a dynamic three-dimensional network, and the structural formula of the phenylboronic acid modified carbon dot is # imgabs 1 #. The phenylboronic acid modified carbon dot is simple in process, easy to process and form and simple and convenient to use; compared with the prior art, the carbon dots modified by phenylboronic acid groups and the polyvinyl alcohol are added, the crosslinking effect between the carbon dots modified by the phenylboronic acid groups and the polyvinyl alcohol is remarkably enhanced, the mechanical strength and water resistance of the composite film are improved, the food coloring detection capacity of the composite film is improved, and in addition, the composite film further has the characteristic of being capable of being reprocessed, so that the composite film has wide application value.

The invention relates to a heat-conducting MXene film with ultrahigh anisotropy and a preparation method of the heat-conducting MXene film. The ultrahigh-anisotropy heat-conducting MXene film is an MXene / MMT composite film and is formed by alternately stacking a plurality of MXene layers and a plurality of MMT layers. The MXene and MMT nanosheets in the alternating layered structure are highly and regularly oriented along the plane direction, so that excellent anisotropic heat-conducting property can be effectively realized. As a heat diffuser of a high-performance electronic device, the film has more excellent cooling efficiency than a traditional commercial heat-conducting film.

The invention discloses a PVA-PET composite film preparation control system based on data analysis, and belongs to the technical field of data processing and analysis, and the PVA-PET composite film preparation control system comprises a data acquisition module, a data analysis module, a control strategy generation and early warning module and a feedback optimization module which are in communication connection with one another. The data acquisition module is used for acquiring key parameters in the preparation process of the PVA-PET composite film; and the data analysis module is used for carrying out data preprocessing, statistical analysis and machine learning training on the acquired key parameters in the PVA-PET composite film preparation process. According to the invention, by selecting a proper sensor and establishing an effective data acquisition system, key parameters in the preparation process of the PVA-PET composite film can be acquired and monitored in real time. And establishing a relationship among key parameters by combining preliminary identification with a secondary identification result. And the data accuracy and the control effectiveness of the PVA-PET composite film preparation control system are improved.

The invention relates to the field of manufacturing of sensitive elements and sensors in the electronic core industry, in particular to a piezoelectric MEMS acoustic device and a manufacturing method thereof. The device structurally comprises a substrate, an insulating layer, a silicon substrate, a multi-layer composite film structure and a protective layer from bottom to top in sequence, wherein the multi-layer composite film structure is formed by alternately growing electrode layers and piezoelectric layers, and the first layer and the last layer of the multi-layer composite film are the electrode layers; a bonding pad is arranged on the multi-layer composite film structure; the protective layer covers the upper surface of the device; a suspended back cavity structure is arranged between the substrate and the insulating layer; the silicon substrate, the multi-layer composite film structure and the protective layer are connected through an opening communicated with the back cavity; according to the device provided by the invention, the volume of the piezoelectric material is increased mainly by adding the piezoelectric layer, and the energy conversion efficiency of the structure is effectively improved, so that the sensitivity of the transducer is improved.

The invention relates to the field of anticorrosive paint, in particular to anticorrosive paint containing lanthanum cerium oxide and a preparation method of the anticorrosive paint. The invention relates to an anticorrosive coating containing lanthanum cerium oxide. The anticorrosive coating is prepared from the following raw materials: 28 to 45 parts of ultraviolet stable composite film forming matter, 5 to 10 parts of composite rare earth filler, 6 to 12 parts of supported synergistic antirust agent, 18 to 30 parts of mixed solvent, 0.8 to 2.5 parts of dispersing agent, 2.7 to 5.3 parts of functional additive and 0.5 to 1.2 parts of nano montmorillonite, the composite rare earth filler is lanthanum cerium oxide-hydroxyapatite composite powder with a core-shell structure, wherein lanthanum cerium oxide is used as a core, hydroxyapatite is used as a shell, and the thickness of the shell layer is 10-20 nm; the ultraviolet stable composite film forming substance comprises epoxy resin and ultraviolet grafting modified polyurethane in a weight ratio of 1: (0.6-2.2); the supported synergistic antirust agent is a mixture of mesoporous silica supported benzotriazole and zinc molybdate. And the obtained coating is high in adhesive force and long in service life.

The invention discloses a high-cohesiveness polyimide composite film capable of being used for a flexible copper-clad plate and a preparation method of the high-cohesiveness polyimide composite film. The polyimide composite film is composed of a thermosetting polyimide supporting layer and a thermoplastic polyimide bonding layer arranged on at least one face of the thermosetting polyimide supporting layer. An interface layer formed by reacting amino-terminated hyperbranched polyamide grafted silicon dioxide particles with thermosetting polyamide acid is embedded between the thermosetting polyimide supporting layer and the thermoplastic polyimide bonding layer, and an end group of thermoplastic polyimide contains an imidazole ring capable of forming a complex with copper. The amino-terminated hyperbranched polyamide grafted silicon dioxide particles are embedded into the interface of the thermosetting layer and the thermoplastic layer, so that the contact area of the supporting layer and the adhesive layer is increased; the polyimide composite film with high cohesiveness, high dimensional stability, high heat resistance and low glass transition temperature is prepared.

The invention discloses a diaphragm type EFPI optical fiber sonic sensor with a sensibilization structure, and relates to the field of optical fiber sensing and underwater acoustic signal communication. The sensor is composed of an optical fiber unit, a threaded sleeve and a sensitization shell which are connected in sequence. The single-mode optical fiber is embedded into the optical fiber ceramic ferrule as a first reflecting surface and inserted into the threaded sleeve in a combined manner, and the chromium-gold composite film is attached to the outer side of the threaded sleeve as a second reflecting surface through epoxy resin glue; the sensitization shell is combined with the threaded sleeve in a screwed mode, the chromium-gold composite film is protected, sound signals are gathered, and the sensitization effect is achieved. The invention has the following advantages and positive effects: (1) the FZP sensitization structure improves the minimum detectable sound pressure of the hydrophone and enhances the capability of identifying weak small signals; (2) the designed water pressure balance hole contributes to the water pressure in the F-P cavity and the outside, and can be suitable for deepwater operation; and (3) the nano-scale transduction film of the film type EFPI sensor can be protected to a certain extent, and the film type EFPI sensor can be suitable for changing environments.

The invention provides a spatial ALD (atomic layer deposition) coating device, a coating method and a composite film. According to the spatial ALD coating device, a coating cavity comprises at least one group of reaction areas which are connected in sequence, and the adjacent reaction areas are isolated through air curtains; each group of reaction areas consists of a precursor reaction area and a co-reactant reaction area which are separated by an air curtain; the gas inlet assembly comprises a precursor source gas inlet piece, a co-reactant source gas inlet piece and a gas curtain supply piece; the precursor source gas inlet piece comprises a precursor source gas supply device and a precursor source gas transmission device; the co-reactant source gas inlet piece comprises a co-reactant source gas supply device and a co-reactant source gas transmission device; the air curtain supply part comprises an air curtain air supply device and an air curtain air conveying device; and the substrate to be coated is driven by the conveying mechanism to sequentially pass through each group of reaction areas. According to the spatial ALD coating device, the preparation of a composite film with any material ratio can be realized according to requirements, the production efficiency is improved, and the application range is widened.

The invention discloses an MXene-edge graphene oxide heterojunction / PBO fiber multifunctional heat-conducting composite film and a preparation method thereof.The preparation method comprises the steps that firstly, MXene and edge graphene oxide EOG are subjected to nucleophilic substitution and dehydration reaction to prepare an MXene-edge graphene oxide MEOG heterojunction filler, then the filler is added into a PBO fiber dispersion liquid to prepare acid gel, then the acid gel is subjected to heat preservation, and the composite film is prepared. And finally, carrying out hot pressing on the obtained hydrogel, so as to obtain the multifunctional heat-conducting composite film. The heat-conducting composite film provided by the invention comprises the PNFs matrix and the MEOG heterojunction filler, an effective way is provided for phonon transmission by utilizing filler-filler covalent interaction, interface thermal resistance is effectively reduced by filler-matrix hydrogen bonds and pi-pi interaction, and the heat-conducting composite film can be widely applied to the aspects of EMI shielding performance, heat dissipation and the like in electronic equipment.

The invention provides a high-entropy nano composite film with self-supporting performance and a preparation method. The preparation method comprises the following steps that a high-power pulse magnetron sputtering method is adopted, metal strips of four elements of Fe, Co, Ni and Cr are spliced together to serve as a sputtering target material, high-purity Ar and a carbon-containing gas source serve as working gas, negative bias voltage is applied to a substrate subjected to surface cleaning treatment, target voltage is applied to the metal splicing target, and high-entropy nano composite film deposition is conducted; and after deposition of the high-entropy nano-composite film is completed, cooling the high-entropy nano-composite film to 80 DEG C or below in a vacuum environment, deflating, opening the cavity and discharging the high-entropy nano-composite film out of the furnace, so that the high-entropy nano-composite film with the self-supporting performance is obtained on the surface of the substrate. The thin film comprises the following components in atomic percent: 5-35 at.% of Fe, 5-35 at.% of Co, 5-35 at.% of Ni, 5-35 at.% of Cr and 10-40 at.% of carbon atoms, and the sum of the atomic percent of the components is 100%. Through component design and process innovation, collaborative optimization of high hardness, high toughness, corrosion resistance and self-supporting performance is achieved.

The invention relates to the technical field of research and development of BIB liquid packaging materials, and discloses a PE-PA-based composite film, a manufacturing process and an application in BIB liquid packaging, and specifically comprises the following steps: synthesizing a PE-PA compatilizer; the preparation method comprises the following steps: carrying out ring-opening reaction on an epoxy functional group of a PE-PA compatilizer and an amino functional group or a carboxyl functional group at a PA resin molecular chain end to prepare PE-PA compatilizer grafted nylon resin, and carrying out physical anchoring action on a long-chain alkane structure on the PE-PA compatilizer grafted nylon resin and a PE resin molecular chain to prepare the PE-PA alloy master batch; low-density polyethylene resin is used as a raw material of a supporting layer, PE-PA alloy master batch is used as a raw material of a functional layer, metallocene polyethylene resin is used as a raw material of a heat sealing layer, a three-layer co-extrusion blow molding film forming technology is adopted, the PE-PA composite film is prepared, and the film product is excellent in comprehensive performance and can be used for manufacturing a BIB bag body.

The invention provides a slow-release antibacterial enhanced composite film for fruit and vegetable preservation and a preparation method thereof, and the preparation method comprises the following steps: performing sulfonation modification treatment on nano cellulose powder to obtain sulfonated nano cellulose; carrying out quaternization modification treatment on the sulfonated nano-crystalline cellulose to obtain quaternary ammonium sulfonated nano-crystalline cellulose; adding gelatin and sodium carboxymethyl cellulose into deionized water to obtain a wall material solution, and adding curcumin into the wall material solution to obtain a prepolymer solution; stirring and emulsifying the prepolymer solution at a high speed to obtain a prepolymer suspension; adding a chitosan solution into the prepolymer suspension to obtain a microcapsule solution, adding tannic acid into the microcapsule solution to obtain a microcapsule suspension, and performing spray drying to obtain double-layer microcapsule powder; the preparation method comprises the following steps: uniformly mixing polylactic acid, quaternary ammonium sulfonated nanocellulose, the double-layer microcapsule powder, a plasticizer, a lubricant and an antioxidant to obtain a mixed material, and sequentially carrying out melt extrusion, cooling, pelletizing and film blowing.

The invention provides a high-strength toughened polyethylene composite film with good interfacial compatibility, which comprises the following components in percentage by weight: 82 to 90 percent of matrix resin, 2 to 5 percent of compatibilizer, 2 to 3 percent of nano reinforcing agent and 6 to 10 percent of toughening agent, the matrix resin is composed of LDPE, LLDPE and HDPE; the proportions of the LDPE, the LLDPE and the HDPE in the matrix resin are respectively 30wt%, 20wt% and 50wt%. According to the high-strength toughened polyethylene composite film disclosed by the invention, the compatibility of a polyethylene film and the toughness of the film are improved through formula optimization, high performance is realized by utilizing the matrix resin and a plurality of additives with low addition amount, and two-phase interface reinforcement and nano reinforcement are realized by utilizing the synergistic effect of the compatibilizer and the nano reinforcing agent. The high-strength toughened polyethylene composite film can be used for producing micro films, and is suitable for the fields of packaging, agricultural covering films, protective materials and the like.

The invention discloses a silk protein-MXene composite film and a preparation method thereof. The silk protein-MXene composite film sequentially comprises a conductive surface layer, a porous response layer and a supporting bottom layer from top to bottom, the invention relates to the technical field of composite films. According to the fibroin-MXene composite film and the preparation method thereof, a three-layer gradient structure is formed by the conductive surface layer, the porous response layer and the supporting bottom layer, good conductivity and electromagnetic shielding effectiveness are ensured by utilizing oriented arrangement of MXene of the conductive surface layer, gallic acid and MXene form a hydrogen bond network, and nitrogen-doped carbon quantum dots coat the surface of MXene to form a physical barrier, so that the electromagnetic shielding effect is improved, and the electromagnetic shielding effect is improved. Through double oxidation resistance of gallic acid and nitrogen-doped carbon quantum dots, a sponge body structure formed by the porous response layer is matched to endow the composite film with high-sensitivity response to external stimulation, the supporting bottom layer is crosslinked by hexamethylene diisocyanate and enhanced by nanocellulose, the tensile strength is improved, and the tensile strength of the composite film is improved. And the contradiction between the mechanical property and the conductivity of the traditional composite film is effectively solved.

The invention relates to the technical field of dental restoration materials, in particular to a bacteriostatic dental restoration composite film and a preparation method thereof. The oral cavity restoration composite film is composed of an upper-layer antibacterial film, a middle-layer polycaprolactone fiber film and a lower-layer bone restoration film. The upper-layer antibacterial film is prepared from the following components in parts by weight: 3 to 4 parts of cinnamon essential oil, 0.5 to 1 part of xanthan gum, 0.5 to 1 part of seed meal protein, 0.1 to 0.15 part of tannic acid, 5 to 7 parts of silk fibroin, 1 to 1.5 parts of polylactic acid, 0.6 to 1 part of chitosan, 1 to 1.5 parts of polyvinyl alcohol and 1.5 to 2.5 parts of glycerol; the lower-layer bone repair membrane is prepared from the following raw materials in parts by weight: 2 to 3 parts of nano-hydroxyapatite, 3 to 5 parts of citric acid, 6 to 9 parts of lactic acid, 3 to 4 parts of tyrosine, 1 to 2 parts of glycollic acid, 2 to 3 parts of casein, 0.2 to 0.3 part of hyperoside and 1 to 2 parts of gelatin.

The invention discloses a reinforced composite PCB and a preparation method thereof, and belongs to the technical field of PCB preparation. The preparation method of the reinforced composite PCB comprises the following steps: step 1, processing an inner-layer core board to obtain a preprocessed inner-layer core board; 2, cutting, drilling and activating the modified composite film to obtain a treated modified composite film; and 3, sequentially carrying out stacking, hot pressing treatment, pressure relief, cooling, drilling, hole metallization treatment, outer layer pattern transfer, pattern electroplating, outer layer etching, resistance welding, surface treatment, molding and testing on a copper foil, a prepreg, the pretreated inner layer core plate, the prepreg, the treated modified composite film, the prepreg, the pretreated inner layer core plate, the prepreg and the copper foil. And the composite PCB is obtained. The circuit board prepared by the method has excellent thermal stability and mechanical properties.

The invention discloses an MEMS composite film stress gradient measuring device and method. The measuring device comprises a V-shaped thermal actuator structure, a displacement measuring structure connected with the V-shaped thermal actuator structure and a multi-layer cantilever beam structure. The method comprises the steps that a V-shaped thermal actuator structure is used for pushing a displacement measurement structure to move towards a multi-layer cantilever beam structure, and when a contact electrode of the displacement measurement structure makes contact with a to-be-measured beam of the multi-layer cantilever beam structure, a horizontal displacement value s is obtained through reading of the displacement measurement structure; calculating the equivalent stress gradient of the composite film according to the geometric dimension of the measuring device, the horizontal displacement value s and the Young modulus of each layer of film; the MEMS composite film stress gradient measuring device and method have the advantages of being easy to operate, low in cost and high in measuring speed, and can be used for parameter monitoring of a process line.

The invention relates to the technical field of film temperature sensors, in particular to a film preparation method based on the sputtering technology, a temperature-sensitive film and a temperature sensor.The temperature sensor comprises an adhesion layer, an insulation layer is arranged on the adhesion layer, a temperature-sensitive layer is arranged on the insulation layer, the adhesion layer is made of NiCrAlY materials, the insulation layer is made of high-melting-point metal oxide materials, and the temperature-sensitive layer is made of high-melting-point metal oxide materials. The temperature-sensitive layer is an ITO-Al2O3 composite film with the mass ratio of Al to In being 1-10 wt%, the adhesion layer of the temperature-sensitive film is used for being adhered to a measured component, and a platinum wire is led out of the temperature-sensitive layer of the temperature-sensitive film to transmit electric signals. Compared with a pure ITO thin film temperature sensor not doped with Al2O3, the thin film temperature sensor based on the temperature-sensitive thin film has the advantages that a repeatability error order of magnitude is remarkably reduced, and the measurement reliability of the thin film temperature sensor based on the temperature-sensitive thin film under an extreme working condition is effectively guaranteed.

The invention discloses an anti-static polyether-ether-ketone composite film as well as a preparation method and application thereof, relates to the technical field of electrostatic protection materials, and solves the problem of poor dispersity of single-form conductive fibers in a polyether-ether-ketone material in the prior art. The In2O3SnO2 (at) CF composite material with the multilayer porous structure and the superfine hollow structure is prepared through a spinning method and a solvothermal method, the specific surface area of the material is increased, and the conductivity is remarkably improved. The anti-static polyether-ether-ketone composite film is prepared by utilizing a method that indium and tin metal ions in the In2O3SnO2 (at) CF composite material can form stable coordinate bonds with amino groups and carboxyl groups in polyether-ether-ketone containing amino groups and carboxyl side groups, so that the interface bonding capacity between the In2O3SnO2 (at) CF composite material and the anti-static polyether-ether-ketone composite film is remarkably enhanced; the stability and the durability of the anti-static polyether-ether-ketone composite film are further improved. The anti-static film can be applied to preparation of anti-static films of integrated circuit chips and sensors in mobile phones or small electronic equipment.

The present invention relates to a composite high-temperature proton exchange membrane, a preparation method thereof, and an application thereof. The preparation method of the composite high-temperature proton exchange membrane comprises the following steps: S1. Mix a polymer represented by formula (I), a polymer represented by formula (II), and a solvent to obtain a casting solution, pour it, and dry it to obtain a composite film; S2. Immerse the composite film obtained in step S1 in an alkaline solution of borax, wash it, dry it, and then adsorb phosphoric acid to obtain the composite high-temperature proton exchange membrane. The composite high-temperature proton exchange membrane prepared by the preparation method of the present invention still maintains good proton conductivity / has high proton conductivity, has a high peak power density, and has high tensile strength and high phosphoric acid retention rate under the condition of low phosphoric acid adsorption amount.

The invention belongs to the technical field of semiconductor material manufacturing, and particularly relates to a preparation method of a piezoelectric single crystal composite film material, which comprises the following steps of: carrying out ion implantation on a piezoelectric functional material, carrying out wet oxidation treatment on the surface of a support substrate, and then cleaning and blow-drying to obtain the piezoelectric single crystal composite film material. Oxygen and nitrogen mixed plasma is used for activating the surfaces of a supporting substrate and a piezoelectric functional material, pre-bonding, standing, nitrogen annealing, thinning and stripping are carried out in a low-vacuum environment, the preparation method is simple in process and low in cost, and the composite film prepared through the method is high in bonding strength, free of damage to a stripping interface and good in bonding performance. And meanwhile, cracking and fragmentation are effectively avoided, the yield is effectively improved, and industrial production is facilitated.

A preparation method of a bacteriostatic and antioxidant zein / hyaluronic acid degradable preservative film relates to the field of foods.The method comprises the steps that a zein-hyaluronic acid solution and a citrus polyphenol solution are mixed, distilled water is dropwise added, vacuum concentration is performed, the mixture is mixed with a laminarin solution, auxiliary materials are added, uniform mixing, bubble removing and film preparing are performed, and the preservative film is obtained. After drying, obtaining a zein-HA film of laminarin and citrus polyphenol; or mixing the zein-hyaluronic acid solution with the moringa oleifera leaf extract powder, dropwise adding distilled water, concentrating under reduced pressure, mixing with the laminarin solution, adding the sodium alginate solution and auxiliary materials, defoaming, pouring to form a film, and drying to obtain the zein-HA film of the laminarin and the moringa oleifera leaf extract. The synergistic effect among the substances of the protein film can effectively improve the fresh-keeping effect of the composite film, and the release property of the composite film can further improve the fresh-keeping effect on fresh-cut food.

The utility model relates to an optical composite film. The optical composite film sequentially comprises a first prism layer, a first base material layer, a haze attaching layer, a second prism layer, a second base material layer and a high-haze diffusion layer from top to bottom. Wherein the first prism layer adopts a microstructure design, the bottom width of the first prism layer is smaller than that of the second prism layer, the bad phenomenon of light interference is avoided, the second prism layer is composed of a prism group composed of high prisms and low prisms, and multi-angle and multi-layer regulation and control of light are achieved. In addition, due to the arrangement of the haze attaching layer and the high-haze diffusion layer, the diffusion effect and the shielding performance of the optical composite film are enhanced. Through the integrated design, the functions of a traditional multi-layer optical film and a diffusion plate are combined into a single film, the product weight and thickness are reduced, the product structure and the assembly process are simplified, and the production efficiency and reliability are improved. High optical gain is maintained, high shielding performance is achieved, and the advantages of improving display image quality, reducing product weight and thickness, simplifying product structure and assembly process and the like are achieved.

The invention discloses a composite film material with lasting fragrance, a preparation method and application of the composite film material in sticky notes, and belongs to the technical field of composite film materials. The composite film material is composed of a PET layer, a bonding layer and a CPP layer; the PET layer comprises PET resin, composite filler, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the bonding layer is composed of a solvent type polyurethane adhesive; the CPP layer comprises PP resin, a modified filler, microcapsule essential oil, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the composite film material prepared by the invention not only has lasting fragrance, but also has strong binding force with a writable coating, high strength, good dimensional stability and high transparency.