35 results about "Curtain coating" patented technology

The invention firstly provides a structure of environment-friendly bottomless paper type thermo-sensitive paper. The structure comprises a base material, and a thermo-sensitive coating and a silicone oil layer which are sequentially laminated on one surface of the base material, the thermosensitive coating comprises a color developing layer, a pre-coating layer and a bottom coating layer which are laminated in sequence, and the bottom coating layer is laminated on one surface of the base material; secondly, a coating system is provided, and a color developing agent comprises 4, 4 '-sulfonyl diphenol; the invention also provides a preparation method which is used for preparing the thermo-sensitive paper by adopting the structure and the coating system, and comprises the following steps: coating the color developing layer on the surface of the pre-coating layer by using curtain coating; a novel structure is designed, a basis is provided for the self-curling release performance of the thermo-sensitive paper, a coating system uses 4, 4 '-sulfonyldiphenol, so that the color saturation, the light resistance and the stability of the thermo-sensitive paper can be improved, the thermo-sensitive paper does not react with silicone oil, the release performance is improved, a curtain coating method is adopted based on the structure and the coating system, and the self-curling release performance of the thermo-sensitive paper is improved. And the coating uniformity, color development and other properties of the thermo-sensitive paper are effectively improved, and the environment-friendly thermo-sensitive paper which is fast in reaction, bright in color and high in definition during printing is integrally formed.

The invention discloses a degradable fruit and vegetable fresh-keeping composite material based on multi-mechanism synergy and a preparation method thereof, and belongs to the technical field of food packaging materials, the degradable fruit and vegetable fresh-keeping composite material comprises the following components by weight: 35-45 parts of a biopolymer matrix, 12-18 parts of mechanical reinforced fiber, 18-25 parts of an ethylene catalytic scavenger, 8-12 parts of a slow-release preservative, 4-6 parts of glycerin, and 1.5-2.5 parts of citric acid; the preparation method comprises the following steps: respectively preparing the ethylene catalytic scavenger and the slow-release preservative; constructing basic gel; the functional components are uniformly dispersed in the gel, and the composite membrane material is prepared through curtain coating, drying, crosslinking and ultraviolet post-treatment. Through collaborative design of carrier loading, molecular embedding and nano-enhancement, efficient removal of ethylene, long-acting slow release of antibacterial and antioxidant activity, remarkable improvement of mechanical properties and unification of all-component biodegradation are realized, the shelf life of fruits and vegetables is effectively prolonged, and the preparation method is suitable for preparation of green packaging products.

The invention discloses a polyving akohol-based composite film with multiple functions and a preparation method thereof, and belongs to the technical field of polymer composite materials. The composite film is prepared by taking polyvinyl alcohol (PVA) as a matrix and introducing an iron-tannic acid coordination complex (Fe-TA) and nano zinc oxide (ZnO NPs). The preparation method comprises the following steps: preparing a PVA solution; the preparation method comprises the following steps: coordinating ferric chloride hexahydrate with tannic acid to form a Fe-TA complex solution, and compounding the Fe-TA complex solution with a PVA solution; and adding the nano-zinc oxide dispersion liquid into the composite liquid, and carrying out defoaming, curtain coating and drying to form the film. Through the synergistic effect of Fe-TA and ZnO NPs, the problems that a pure PVA film is high in hydrophilicity and single in function are effectively solved. The obtained composite film has excellent mechanical strength, high oxygen and water vapor barrier property, efficient near-infrared light thermal response capability and long-acting antioxidant activity, and has wide application prospects in the fields of food active packaging, intelligent packaging and the like. The method is simple in process, environment-friendly and easy for large-scale production.

A system and method for producing a porous electrode with a high level of porosity, preferably mesoporosity, without the use of a binder. The electrode is formed by depositing a layer on a substrate from a colloidal suspension containing aggregated or agglomerated nanoparticles. Deposition methods include electrophoresis, ink-jet printing, doctor blade, roll coating, curtain coating, or dip-coating. The process includes drying and may involve additional consolidation steps such as pressing and / or heat treatment to enhance structural integrity, electrical conductivity, and adhesion. The heat treatment induces partial coalescence of nanoparticles, creating a three-dimensional porous structure that facilitates ion mobility. A thin coating of an electrically insulating or ion-conductive material may be applied to reduce interfacial reactions. The resulting porous electrode may be used in energy storage applications, such as lithium-ion batteries. The invention also includes a method for manufacturing batteries utilizing these electrodes and related battery designs.

The invention relates to a device for applying a treatment substance, in particular starch or size, to a moving paper and board web (11), in particular to a containerboard or corrugated board, by means of at least one curtain coating mechanism (2.1, 2.2). In order to provide an improved treatment substance coating device, the at least one curtain coating die can be supplied with differently prepared treatment substances, and the curtain coater (2.1, 2.2) combines both a film mode of operation and a slot mode of operation by providing an electrically and / or mechanically drivable gap adjustment device (3.1, 3.2) for the outlet gap (14.1, 14.2) of the control die lip applied to the curtain coating die, and optionally sets the outlet gap (14.1, 14.2) to 100 μm to 500 μm in the film mode of operation or to 500 μm to 2.0 mm in the slot mode of operation, so that the at least one curtain coating mechanism (2.1, 2.2) is designed to be able to be operated in two different modes of operation.

The invention provides three-dimensional wave-absorbing honeycomb forming equipment. The three-dimensional wave-absorbing honeycomb forming equipment comprises a material table; the portal frame is arranged above the material table in a spanning mode. The numerical control displacement module is fixed to the portal frame and used for driving the machine head to move relative to the material table top. The prefabricated body storage bin is communicated with the machine head through a prefabricated body conveying module; the assembling turntable module is arranged between the prefabricated body storage bin and the prefabricated body conveying module and is used for driving the prefabricated body storage bin to be aligned with the prefabricated body conveying module; the honeycomb morphology feature detection module is fixed with the machine head and is used for generating a feeding track arrangement diagram; and the machine head puts preforms into the to-be-processed wave-absorbing honeycomb according to the feeding track arrangement diagram. By implementing the method, single holes in the wave-absorbing honeycomb can be subjected to shower coating, effective 2D plane electromagnetic separation surface design is formed, and the implementation reliability of a 3D electromagnetic separation surface design process is displayed; the problems of limitation of a traditional technology and errors of manual machining are solved, and the equipment blank in the technical field is filled up.

The utility model discloses chemical paint fading equipment for airplane components. The chemical paint fading equipment comprises an equipment outer cover, and a dip coating tank, a curtain coating tank, a reaction tank, a washing and air drying tank, a paint fading agent storage tank and a single-arm gantry manipulator which are arranged in the equipment outer cover, the dipping and coating groove is used for dipping and coating a paint fading agent in the dipping and coating groove; the curtain coating groove is used for curtain coating of a paint fading agent in the curtain coating groove, and a spraying pipe is arranged in the curtain coating groove; a spraying pipe in the curtain coating tank is connected with a liquid outlet of the paint fading agent storage tank through a spraying pump, and a liquid outlet of the spraying pipe is also connected to a waste liquid inlet of the paint fading agent storage tank, so that a circulating spraying system is formed; the reaction tank is used for carrying out paint fading reaction on the aircraft component treated by the dip coating tank or the curtain coating tank; a spraying air-drying pipe is arranged in the washing air-drying tank and is used for washing and water-cutting air-drying the airplane parts subjected to the paint fading reaction; and the single-arm gantry manipulator is used for driving the aircraft parts to move into the grooves for treatment.

The utility model discloses a plastic extrusion lamination composite unit stand column reel changing and unwinding device which comprises a first fixing plate, a discharging reel is arranged on the side face of the first fixing plate, a clamping device is arranged at the other end of the discharging reel, a second fixing plate is arranged on the side face of the clamping device, and a first fixing plate and a second fixing plate are arranged on the second fixing plate. And a moving device is arranged below the second fixing plate. By means of the structure, the problems that when a traditional roll changing and unwinding device is used for disassembling a winding roll or an unwinding roll, tedious steps are usually needed, and a large amount of manual operation is needed can be solved, the problems that the working intensity of workers is greatly increased, and the working efficiency is reduced are solved, and the working efficiency is improved. By means of the roll changing and unwinding device, the problem that when part of roll changing and unwinding devices are used for assembling the winding rolls or the unwinding rolls, the winding rolls or the unwinding rolls which are manually placed generally incline can be solved, the problem that the quality of subsequent machining is reduced is solved, and the problem that the practicability of the device is reduced is solved.

The invention relates to the technical field of curtain coating film forming and profiling, and provides curtain coating film forming and profiling equipment for composite non-woven fabric and a profiling production technology.The curtain coating film forming and profiling equipment for the composite non-woven fabric comprises a sliding rail, a tension adjusting mechanism and a rapid temperature adjusting mechanism, and when an extrusion system slides, a molten material can be driven to move; the tension adjusting mechanism is arranged on the side, close to the pressing position of the molten material, of the extrusion system, the tension adjusting system can supply air to the molten material, and the rapid temperature adjusting mechanism is fixedly connected to the machine body frame and can adjust the temperature of the molten material to be adjusted. The extrusion system is arranged between the tension adjusting mechanism and the rapid temperature adjusting mechanism, the rapid temperature adjusting mechanism can make contact with the tape casting forming system, the surface temperature of the tape casting forming system is rapidly adjusted, and the technical problem that in the prior art, the thickness difference of concave-convex positions of lines on non-woven fabric is large during tape casting film forming pressing is solved.

The invention relates to an ultra-thin iodine polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin iodine polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and iodine and / or potassium iodide dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving manner. According to the invention, iodine and / or potassium iodide are / is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin iodine polarizer is finally obtained through the steps of material mixing, distillation, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On the first aspect, iodine and / or potassium iodide are dispersed more uniformly by adopting a dissolving and dispersing mode, so that the degree of polarization and the light transmittance of each part of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, a retarder is compounded on the ultra-thin iodine polaroid, so that the purpose of manufacturing the ultra-thin circular polaroid is achieved.

The utility model discloses an environment-friendly laminating and coating device for a paper-plastic composite bag, which belongs to the field of composite bag production and comprises a composite bag laminating and coating device connecting bottom plate total component, and one side of the composite bag laminating and coating device connecting bottom plate total component is fixedly connected with a telescopic rod. A coating head assembly is fixedly connected to one side of the telescopic rod, a limiting guide plate is fixedly connected to the side, connected with the bottom plate total component, of the composite bag film coating device, and a supporting arm is fixedly connected to the side, connected with the bottom plate total component, of the composite bag film coating device; through cooperative use of the devices, when a user needs to conduct coating, the user needs to place a composite bag on a transmission roller, after the user places the composite bag, the user needs to turn on an output motor, and after the output motor is started, the transmission roller fixedly connected to the top end of an output shaft of the output motor in a sleeving mode can be driven to rotate; in this way, the compound bag can be used and transmitted through the transmission roller.

The application relates to the technical field of extrusion curtain coating composite equipment, in particular to a multi-layer extrusion curtain coating composite unit, which comprises a trimming rack of a curtain coating composite machine, the upper end of the trimming rack is provided with a conveying table, the upper end of the trimming rack is provided with a trimming mechanism, the trimming mechanism comprises a transverse adjusting assembly, the transverse adjusting assembly is provided with a longitudinal adjusting assembly, the longitudinal adjusting assembly is provided with a longitudinal sliding block with a built-in ball nut, the outer side of the longitudinal sliding block is provided with a supporting rod, the lower end of the supporting rod is provided with a fixing rod, and the fixing rod is provided with a roller, the trimming mechanism is arranged, a double-dimension adjusting structure of the transverse adjusting assembly and the longitudinal adjusting assembly is constructed, synchronous and opposite or opposite and synchronous precise displacement of two cutters is realized, the trimming demand of the composite film with different widths is quickly adapted, the longitudinal height of the cutter is flexibly adjusted, and the adaptability to the composite films with different thicknesses is ensured.

The utility model provides a pre-flattening mechanism for curtain coating processing of a filter membrane, which relates to the technical field of filter membranes and comprises an operation box, four corners of the bottom of the operation box are fixedly connected with supporting legs, the top of the operation box is provided with a through hole, and the bottom of the inner wall of the operation box is provided with a flattening mechanism. The motor is started and rotates to drive the stretching wheel to rotate, friction force of rotation of the stretching wheel is reduced through the arrangement of the balls, efficient fixing of the stretching wheel is facilitated through the arrangement of the positioning balls, the stretching wheel is prevented from deviating, and meanwhile through the arrangement of the universal coupling, the stretching wheel can be conveniently and rapidly fixed. And a plurality of stretching wheels can rotate synchronously, so that the filter membrane is uniformly stretched to the outer side, an electric push rod moves to the bottom to drive an air pump to move to the bottom, a suction head at the bottom of the air pump efficiently adsorbs the filter membrane, and the filter membrane can efficiently move by rotating a rotating column.

1. Name of the product in this design: Two-component spray coating equipment. 2. Application of this design: This design is applied to the field of coating technology for two-component fluids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of curtain coating material belt transverse cutting, in particular to a curtain coating material belt transverse cutting device which comprises a supporting frame, a cleaning machine, a control unit, a material receiving telescopic fork, a support, a transverse cutting assembly and a conveyor. The cleaning machine is fixedly installed on one side of the long edge of the supporting frame, the control unit is fixedly installed on the other side of the long edge of the supporting frame, the material receiving telescopic fork is movably installed on the top of the supporting frame, the support is fixedly installed on one side of the short edge of the supporting frame, the conveyor is fixedly installed on the support, and the transverse cutting assembly is fixedly installed on the support. The transverse cutting assembly is close to one side of the conveyor on the supporting frame. According to the tape-casting material belt cutting device, in the cutting process of the tape-casting material belt, the tape-casting material belt is prevented from being slightly shrunk, stretched or shaken, meanwhile, cuttings are prevented from being generated, flatness of a notch is guaranteed, and the cutting precision is greatly improved.

1. The name of the design product: double-component curtain coating equipment. 2. The use of the design product: the design product is applied to the coating technology field of double-component fluid. 3. The design points of the design product: the shape of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses a curtain coating system and a curtain coating method for a wear-resistant coating of windshield glass of an outfield aircraft cabin, and belongs to the technical field of aircraft maintenance. The mobile cleaning room comprises a mobile cleaning room body, an environment control system and a platform operation assembly, the bottom of the mobile cleaning room body is borne and driven by an AGV, and a main body of the mobile cleaning room body is a hexahedral shell formed by splicing a plurality of cleaning plates and a plurality of anti-static acrylic plates; the front surface and the rear surface are provided with openings for an airplane to pass through and are respectively connected with a front binding cover and a rear binding cover in a sealing manner; the environment control system comprises at least one fresh air FFU air purifier and a plurality of return air FFU air purifiers which are installed on the inner side of the top of the movable clean room. The working platform assembly comprises a plurality of heavy-load sliding rails laid on the inner bottom face of the movable clean room and a telescopic working table installed on the heavy-load sliding rails in a sliding mode. According to the method, the surface of the windshield glass can be directly and efficiently subjected to strengthening treatment under the external field condition.

The utility model relates to a kind of anti-light soft curtain coating uniform coating devices, including frame, sprayer, placing table and straightening mechanism, the placing table is equipped in frame, the sprayer is installed in frame, for the coating coating on placing table soft curtain, the soft curtain needing to be sprayed is laid on placing table, first start hydraulic rod and drive placing table to move up, two compression rollers first contact soft curtain, compression roller is extruded to cause inclined plate rotation, to compress spring, two compression rollers are mutually far away, to preliminarily straighten soft curtain, wherein the pushing range of hydraulic rod setting movement, soft curtain and compression roller extrusion intensity cannot be too large, subsequently move pull frame, drive movable frame to move in support seat bottom, two compression rollers are mutually far away, and soft curtain is straightened, after distance is adjusted, nut can be rotated, since nut and bolt are threadedly connected, nut bottom and support seat top are pasted, and extrusion is implemented to the fixation of compression roller.

The invention discloses top-coat-free thermo-sensitive paper suitable for high-speed printing and a manufacturing method of the top-coat-free thermo-sensitive paper, and belongs to the technical field of curtain type coating thermo-sensitive coating materials and processes. The top-coat-free thermo-sensitive paper is sequentially composed of a base material, a bottom coating and a top coating, the coating dry weight of the bottom coating is 4.2 + / -0.2 g / m, and the bottom coating comprises inorganic dye dispersion liquid, hollow balls, resin emulsion and the like; the coating dry weight of the surface coating is 3.3 + / -0.2 g / m, the surface coating comprises a color developing agent, an inorganic dye dispersion liquid, PVA, an inorganic dye grinding liquid and the like, the particle size D (4, 3) of the bisphenol A color developing agent is less than or equal to 0.50 mu m, and the particle size D (4, 3) of a silicon dioxide grinding dye is less than or equal to 0.60 mu m. The manufacturing method comprises the steps of preparation of coating liquid of each coating, curtain type coating, hot air drying and the like. By optimizing the formula and process of the coating, the lubricity of the top-coat-free thermo-sensitive paper is improved, precipitation and accumulation of a color developing agent are reduced, the problems of paper jam, printing head abrasion, image instability and the like in high-speed printing are solved, and the top-coat-free thermo-sensitive paper has the advantages of economic benefits and environmental protection and is suitable for large-scale application in high-speed printing scenes.

The invention discloses a full-bio-based antibacterial composite film for fresh keeping of fruits and vegetables as well as a preparation method and application of the full-bio-based antibacterial composite film, and belongs to the technical field of bio-based food packaging materials. The problems that a pure chitosan film is poor in mechanical property, insufficient in barrier property and single in function are solved. The composite membrane is prepared by taking chitosan as a matrix, introducing a natural cross-linking agent genipin, a reinforcing phase sulfonated nano cellulose whisker and a functional component lemon grass essential oil, and carrying out the steps of curtain coating, drying and the like. Through the synergistic effect of genipin crosslinking and nanocellulose enhancement, the mechanical strength and barrier property of the composite film are remarkably improved, and the composite film is endowed with broad-spectrum antibacterial, antioxidant and excellent anti-ultraviolet functions. All components of the membrane are derived from natural renewable resources, and the membrane is safe and biodegradable. Application experiments show that when the preservative is applied to preservation of perishable fruits and vegetables of cherries and tomatoes, the growth of microorganisms can be effectively inhibited, the quality deterioration is delayed, the weight loss rate is reduced, the hardness is maintained, the shelf life is remarkably prolonged, and the preservative has important application prospects.

The invention discloses an intrinsic coloring polyimide film and a preparation method thereof. The film is obtained by carrying out curtain coating and imidization on low-molecular-weight intrinsic coloring polyamide acid resin and high-molecular-weight polyamide acid resin, the tensile strength of the intrinsic colored polyimide film is larger than 160 MPa, and the elongation at break is larger than 40%. The preparation method comprises the following steps: (1) preparing or taking the polyamide acid composition; and (2) carrying out imidization on the polyamide acid composition to prepare the intrinsic colored polyimide film. The tensile strength of the finally obtained product is larger than 160 MPa, the elongation at break is larger than 40%, the 60-degree glossiness is smaller than 35, the dehumidification electrical strength is larger than 180 kv / mm, and the light transmittance is smaller than 0.1%. The preparation process has flexibility and simplicity in performance regulation and control, and industrial application is realized.

The invention relates to the technical field of shoe and clothing auxiliary materials, in particular to an anti-aging three-layer waterproof heat-sealing adhesive tape and a preparation process thereof.The preparation process includes the steps that a polyurethane waterproof layer is compounded on one side of base cloth through a transfer coating process and dried; the surface of the semi-finished polyurethane waterproof layer is coated with TPU / EVA hot melt adhesive melt in a curtain coating mode through a melting curtain coating technology, and the three-layer waterproof heat-sealing adhesive tape sequentially comprises the base cloth, the polyurethane waterproof layer and a TPU / EVA hot melt adhesive layer from top to bottom; the TPU / EVA hot melt adhesive comprises the following melt components: TPU resin, EVA resin, an EVA-g-MAH (maleic anhydride-grafted maleic anhydride) compatilizer, an anti-UV (ultraviolet) agent, an antioxidant and a hydrolysis-resistant cross-linking multifunctional agent. The anti-hydrolysis crosslinking multifunctional agent is unblocked to expose a reaction group in the process of attaching the anti-hydrolysis crosslinking multifunctional agent to the carrier through high-temperature hot pressing, a TPU molecular chain is promoted to form a crosslinking network, the mechanical property is improved, carbodiimide is embedded into the TPU molecular chain, and therefore carbodiimide can better react with carboxyl generated through ester group hydrolysis in a high-humidity environment, and the autocatalytic effect is blocked.

The invention relates to a high-thermal-conductivity shape memory nano composite material and a preparation method and application thereof, and the preparation method comprises the following steps: functionalizing a graphene nanosheet by using phenylphosphonic acid to obtain PPA (at) GNPs; the preparation method comprises the following steps: combining cellulose nanocrystals and PPA (at) GNPs through non-covalent interaction in an environment with the pH value of 6-8, so as to form a CNC-PPA (at) GNPs nanosheet; and uniformly dispersing the CNC-PPA-coated GNPs nanosheets in a polypropylene carbonate (PPC) solution, and then carrying out curtain coating and drying to obtain the shape memory nano composite material with high thermal conductivity. The preparation method comprises the following steps: anchoring a PPA functionalized graphene nanosheet GNPs by CNC (computer numerical control) to form a CNC-PPA coated GNPs nanosheet; the nanosheets are dispersed in a polypropylene carbonate (PPC) matrix, and the composite material is prepared through a solution casting method. According to the invention, a bridging heat conduction network is constructed in PPC through the CNC-PPA-GNPs nanosheets, so that the heat conductivity, the mechanical property and the shape memory function of the composite material are remarkably improved, and the composite material has biodegradability; the material can reduce the temperature of a CPU of a smart phone to 17.9 DEG C under real operation conditions, and balance of thermal insulation and heat dissipation is achieved.

The acrylic mirror board comprises a gloss oil protection layer, an aluminum plating layer and an acrylic substrate layer which are sequentially arranged from top to bottom, and the gloss oil protection layer is formed by curtain coating and curing gloss oil formed by components such as acrylate resin, polyurethane acrylate resin and a photoinitiator. The preparation method of the acrylic mirror board for the sound panel comprises the steps of vacuum aluminum plating, gloss oil curtain coating and curing, and the board has excellent wear resistance and adhesive force and high reflectivity.

The invention relates to a plastic-free coating material laminating machine, which belongs to the technical field of laminating machines, and comprises a machine shell, a composite rotating roller, a coating mechanism, a heat source control mechanism and a vertical-wind-free drying mechanism, the coating mechanism is arranged in the machine shell, and one end of the top of the coating mechanism is communicated with a feeding tank; the heat source tank is used for coating a plastic-free coating raw material in the feeding tank onto a base material passing through the composite rotating roller, the heat source control mechanism is fixed in the machine shell through a support, one end of the top of the heat source control mechanism is communicated with the heat source tank, and the vertical-wind-free drying mechanism is arranged in the machine shell and further communicated with the heat source tank through a pipeline. By means of the hot water circulation system, double-face collaborative and stepped drying of the base material is achieved, the heat energy utilization rate is high, and curing is uniform. The coating mechanism is integrated with an adjustable eccentric disc, salient point textures can be directly manufactured on a wet coating after film spraying, and the product function and the process flexibility are improved.

The invention belongs to the technical field of intelligent controlled-release antibacterial packaging, and particularly relates to a preparation method and application of an intelligent controlled-release fresh water absorption pad based on a multi-stage response time sequence. The preparation method comprises the following steps: firstly, preparing a sodium alginate-Zn < 2 + > microcapsule; then, the microcapsules are used as functional filler to be uniformly dispersed in a chitosan membrane casting solution, a chitosan base layer with a compact network structure is formed through film casting, and the layer is used for controlling the release rate of an initial active substance; finally, the surface of the chitosan layer is further coated with a Eudragit L100 solution in a curtain coating mode, an outer layer pH regulation and control film is formed, precise controlled release of Zn < 2 + >, tea tree essential oil, lysozyme and other biological antibacterial materials in different decay stages is achieved, and therefore the overall preservation effect is optimized. The prepared preservative film is flexible in form and convenient to use, has long-acting preservation performance and has wide application prospects.

The invention relates to a brightening aliphatic TPU base film for invisible car clothing and a preparation method of the brightening aliphatic TPU base film. The base film comprises the following components in parts by weight: 100 parts of aliphatic TPU, 0.5-3 parts of an optical-grade modifier, 1-5 parts of a polyester polyol-siloxane copolymer compatibilizing and brightening agent, an anti-hydrolysis stabilizer, an ultraviolet light absorber and a hindered amine light stabilizer; the modifier is nano SiO2 and / or nano Al2O3 treated by amino silane with the average particle size of 10nm-50nm, and the refractive index difference between the modifier and TPU is less than or equal to 0.02. The preparation method comprises the following steps: dispersing nanoparticles in an alcohol solvent, dropwise adding a silane coupling agent at 40-60 DEG C, replenishing water for in-situ hydrolysis, completing coupling and curing grafting under the condition that the pH value is 4-5, and then carrying out melt blending, filtering and curtain coating and stretching to form the film. The base film provided by the invention has the advantages of high light transmittance, low haze and brightening effect, the hydrolysis resistance and weather resistance stability are improved, and the batch stability is realized.

The invention belongs to the technical field of coating materials, and relates to matte water-based shower coating finish paint for floors and a preparation method and application thereof.The finish paint is prepared from polyurethane acrylate, modified polyacrylate emulsion, a photoinitiator, modified nano-silica and other components through the steps of pre-dispersion, multi-stage stirring dispersion, filtering packaging and the like. The invention further discloses a matte water-based shower-coating solid wood composite floor adopting the finishing paint and a production process of the matte water-based shower-coating solid wood composite floor, the floor comprises three or more layers of base materials, a roller-coating primer layer and a shower-coating finishing paint layer, and the floor is prepared through base material pretreatment, multiple times of primer coating, finishing paint shower-coating curing and post-treatment. The finish paint is scientific in formula, overcomes the defects of shrinkage cavity, poor wear resistance and the like of the traditional water-based shower paint, and has the advantages of uniform matte paint film, hardness of more than or equal to 2H, excellent wear resistance, VOC emission of less than or equal to 5g / L, and good environmental protection property. The matched production process is efficient and controllable, product storage is stable, the floor lock catch is good in mute effect, and the floor lock catch is suitable for industrial large-scale production and meets the market requirements of high-quality wood floors.

The invention discloses a high-barrier aging-resistant ETFE release film for semiconductor packaging and a preparation process thereof, and relates to the field of fluoroplastic film preparation and semiconductor back-end packaging. According to the preparation method, the rutile type flaky nano material is synthesized by a wet chemical method, and is subjected to synergistic modification of polymerizable double bonds and fluorine-containing chain segment bifunctional groups, so that the dispersity and interface bonding force of the rutile type flaky nano material in an ETFE matrix are remarkably improved. A modified nano material and pretreated ETFE resin are compounded, and melt blending, curtain coating stretching and gradient dose electron beam irradiation are carried out, so that a barrier network with directionally arranged nanosheets and a structure with gradient distribution of crosslinking density are constructed in the film. Finally, an organic-inorganic hybrid high-temperature-resistant release layer anchored by multiple chemical bonds is constructed on the surface of the membrane in situ through plasma activation and a sol-gel method. The ETFE release film prepared by the preparation method disclosed by the invention has the advantages of ultralow water vapor transmittance, excellent thermal dimensional stability, high mechanical reliability and lasting release function, and has a wide application prospect.

A pipe end blanking control mechanism for a steel pipe curtain spreading and coating machine includes a hopper mechanism (10), a gap control mechanism (20), and a width control mechanism (30). The gap control mechanism (20) forms a material drop gap (14) for adjusting the material drop width W of the material drop gap (14). 隙 The gap control mechanism (20) includes a fixed cam roller (21) and a rotatably mounted movable cam roller (22), forming a material drop gap (14) between the fixed cam roller (21) and the movable cam roller (22); the width control mechanism (30) simultaneously abuts against the fixed cam roller (21) and the movable cam roller (22) of the gap control mechanism (20), and moves along the material drop gap (14) in the same direction and at the same speed as the steel pipe to control the material drop width L of the material drop gap (14). 落 The tube end blanking control mechanism, in conjunction with the suction control mechanism and the amplitude control mechanism, allows the width and length of the material drop gap to be adjusted independently, automatically achieving tube end blanking.