1335 results about "Moisture resistance" patented technology

The invention relates to the technical field of power transmission, in particular to a moisture-proof cable which sequentially comprises a conductive wire core, a gradient buffer layer, a dynamic sealing layer, a flexible supporting layer and a self-repairing sheath from inside to outside. A gradient buffer layer; the dynamic sealing layer is of a split type sealing structure formed by an outer ring surface sealing lip and an inner ring surface static sealing belt, the outer ring surface sealing lip is formed by embedding a polytetrafluoroethylene fiber reinforcing layer in a silicone rubber matrix, and the surface of the outer ring surface sealing lip is coated with a humidity response type graphene coating; the flexible supporting layer is formed by spirally winding a nickel-titanium alloy belt, and bionic fish scales are welded to the surface of the nickel-titanium alloy belt; the self-repairing sheath is characterized in that a hexagonal honeycomb structure is molded on the outer layer, hydroxyl-terminated polysiloxane and a platinum catalyst are contained in an A-type microcapsule, and modified epoxy resin is contained in a B-type microcapsule. The moisture-proof cable shows excellent corrosion resistance, moisture resistance and self-repairing capability in a humid environment, and can maintain good performance when subjected to external physical impact.

The invention provides a bio-based adhesive and a preparation method thereof. Inspired by a spider thread structure, biomass adhesive interface enhancement based on a tannic acid adhesion group is combined with construction of a differential phase separation structure by biomass-induced polylipoic acid depolymerization, and a brand new strategy of adhesion-cohesion synergistic enhancement of the adhesive strength of the adhesive is realized. According to the invention, tannic acid and carboxymethyl chitosan are introduced into a lipoic acid-based adhesive, so that the purpose of synergistically enhancing the bonding performance of the adhesive through adhesion-cohesion is achieved, and the defects of weak cohesion, low bonding strength, poor water resistance, poor moisture resistance and the like of the conventional biomass adhesive are overcome. Benefited from a new strategy of adhesion-cohesion synergistic enhancement, the biomass adhesive has good adhesive strength in various environments and materials. In addition, the biomass adhesive also has the characteristics of biological safety, antibacterial and mildew-proof properties and recoverability, so that the product has wider application and potential compared with the previous product, and has a good application prospect.

The invention relates to the field of functional building materials, and discloses a preparation process of a building backing plate and a product. The invention discloses a preparation process of a building backing plate. The preparation process comprises the following steps: S1, cutting an extruded sheet, and flattening the surface of the extruded sheet; s2, placing fiber gridding cloth on one surface of the extruded sheet, coating the fiber gridding cloth with an interface treating agent, and shaping; s3, the surface of the fiber gridding cloth is coated with mortar emulsion, and drying is conducted; s4, turning over, placing fiber gridding cloth on the other surface of the extruded sheet, coating the fiber gridding cloth with an interface treating agent, and shaping; and coating the mortar emulsion on the surface of the fiber gridding cloth, drying and maintaining to obtain the building backing plate. The preparation process is simple and easy to operate, and the prepared building backing plate has good water resistance, moisture resistance, heat insulation, sound insulation and flame retardance, is not prone to separation and cracking after being used for a long time, and is suitable for humid environments such as toilets or kitchens.

The invention relates to the technical field of electricity meters, and particularly discloses a relay and an electricity meter thereof, comprising a mounting plate: a clamping frame is fixedly mounted on the front surface of the mounting plate, sliding grooves are formed in the upper and lower ends of the clamping frame, sliding plates are slidably connected to the inner sides of the sliding grooves, and heat dissipation fins of a heat conduction aluminum plate are attached to electronic components in the electricity meter. The n-pentane heat-conducting medium in the liquid storage box is heated and vaporized, the heat is absorbed, the heat dissipation capability is improved, the heat pushes the air cylinder to open the heat dissipation window, the air velocity in the electric meter is improved, the heat dissipation is enhanced, the temperature is continuously increased, and the heat-conducting medium is further vaporized, so that the inner current-conducting plate and the outer current-conducting plate are attached; and after the temperature is reduced, the heat-conducting medium is condensed, the air cylinder shrinks to block the heat dissipation window, the heat dissipation fan does not need to be automatically triggered by a temperature sensor, the consumption is reduced, the stability is improved, the cost is reduced, and the protection and moisture-proof performance is improved by the blocking window when the heat dissipation device is not used.

The invention discloses a temperature-resistant waterproof polyurethane coating and a preparation method thereof, and belongs to the technical field of polyurethane coatings, the temperature-resistant waterproof polyurethane coating comprises the following components by mass: 80-90 parts of a polyurethane prepolymer, 1-1.5 parts of a reinforcing filler, 2-3 parts of a composite curing agent and 7-9 parts of polyether glycol; the polyurethane prepolymer is prepared by the following steps: stirring and mixing a fluororubber grafted solution and polyester polyol in a reaction kettle, heating to 70-80 DEG C under the protection of nitrogen, adding an isocyanate mixture, and stirring and reacting for 2-3 hours to obtain the polyurethane prepolymer; according to the temperature-resistant waterproof polyurethane coating prepared by the preparation method disclosed by the invention, the-NCO group is terminated, so that the coating has good stability before curing, is not easy to react with moisture in air and has good moisture resistance before curing, and the fluororubber, the reinforcing filler and the polyurethane waterproof coating are mixed, so that a cross-linked network of the cured polyurethane waterproof coating is enhanced; the mechanical property and the temperature resistance of the cured polyurethane waterproof coating are improved.

A high-temperature-resistant and aging-resistant polyurethane material and a preparation method therefor. The polyurethane material comprises the following components in parts by mass: 21-27 parts of a modified polyurethane resin, 10-15 parts of a phenolic resin, 10-15 parts of an epoxy resin, 16-20 parts of a modified solid filler, 7-13 parts of a curing agent, 1-2 parts of a defoaming agent, 1-3 parts of a wetting agent, 0.7-1 part of a leveling agent, and 5-10 parts of water. The high-temperature-resistant and aging-resistant polyurethane material has excellent temperature resistance and moisture resistance, high aging resistance, and strong adhesion to a glass surface and can be used as a coating with which a glass surface is coated.

The invention discloses a solid electrolyte, a preparation method thereof and an all-solid-state battery, and belongs to the technical field of solid electrolytes. According to the preparation method, a nano inert oxide and a solid electrolyte raw material are compounded through mechanical grinding, and the solid electrolyte with a core-shell structure is prepared; the device comprises an inner core, an interface layer and a shell from inside to outside, the inner core is a solid electrolyte matrix, the interface layer is a transition layer generated by reaction of the solid electrolyte matrix and a nano inert oxide, and the shell is a nano inert oxide layer. The material combines the advantages of high moisture resistance and wide electrochemical window of the nano inert oxide and the characteristics of high ionic conductivity and excellent mechanical property of the solid electrolyte, and the comprehensive performance of the material is remarkably improved through the synergistic effect of the components. The composite structure design not only solves the problem of performance limitation of a single material system, but also realizes collaborative optimization of ionic conductivity, environmental adaptability and electrochemical stability while ensuring the material stability.

The invention relates to the technical field of capacitor films. The invention discloses a preparation process of a multilayer polypropylene capacitance film, which comprises the following steps: S1, raw material preparation: preparing basic resin, a nano ceramic filler, a nucleating agent and an antioxidant into multilayer raw materials respectively; s2, fusing multiple layers of raw materials by an independent screw extruder, and compounding by a co-extrusion die head to form a film blank; and S3, carrying out air ring gradient cooling on the film blank. And S4, longitudinally and transversely stretching the film blank. And S5, performing heat setting in a segmented heating furnace, and performing corona treatment to improve surface energy. And S6, segmentally curing the moisture-proof coating by using an infrared oven. The multilayer heterostructure is adopted, the comprehensive performance of the capacitor film is improved through material matching, the dielectric constant, the breakdown strength and the moisture resistance are enhanced, and the problem of considering the dielectric property and the mechanical property is solved. The innovative process guarantees stable performance, is compatible with an existing production line, can realize large-scale production, meets the requirements of fields such as new energy and the like, and provides a feasible scheme for localization of high-performance capacitor films.

The invention relates to a preparation method of a normal-temperature normal-pressure efficient gas adsorption composite material. The method comprises the following steps: firstly, pretreating activated carbon to obtain surface-OH modified mesoporous activated carbon; then modifying the surface-OH modified mesoporous activated carbon with the ZIF-8 material to obtain ZIF-8 (at) OH-AC; and finally, performing surface hydrophobization modification to obtain the adsorption material. Wherein in the modification process, ZIF-8 is firmly loaded and uniformly distributed on the surface of hydroxyl-modified mesoporous activated carbon by adopting an in-situ growth technology, the interface bonding force is enhanced, the loading capacity of the activated carbon on the MOFs material is improved, and by utilizing the chemical adsorption effect of ZIF-8 Zn < 2 + > and methane and the high porosity of the mesoporous activated carbon, the MOFs material can be prepared. The adsorption capacity of the composite material to methane is greatly improved, meanwhile, the moisture resistance of the composite material is effectively improved, the composite material can still keep stable and efficient adsorption performance in a high-humidity environment, and the problem that an existing material is prone to inactivation in a humid environment is solved.

The invention provides a soluble fiber inorganic ceramic plate and a preparation method thereof, and the method comprises the following steps: S10: carrying out polysiloxane coating treatment on soluble ceramic fibers to obtain modified soluble ceramic fibers; wherein the polysiloxane contains an amino group; s20, dispersing the modified soluble ceramic fibers in water to obtain a first mixed solution; s30, adding an epoxy silane coupling agent into the silica sol binder to graft epoxy groups on the surface of silicon dioxide in the silica sol binder to obtain a second mixed solution; and S40, mixing the first mixed solution and the second mixed solution to obtain slurry, performing wet vacuum forming on the slurry, and drying to obtain the soluble fiber inorganic ceramic plate. The soluble fiber inorganic ceramic plate obtained by the method has good moisture resistance and strength.

The invention belongs to the technical field of packaging carton production, and discloses a folding-resistant damp-proof packaging carton and a preparation method thereof. The folding-resistant moisture-proof packaging carton is prepared from the following raw materials in parts by weight: 70 to 80 parts of papermaking wood flour, 8 to 10 parts of filler, 30 to 40 parts of modified plant fiber, 20 to 30 parts of high-toughness plant fiber-based composite material, 8 to 10 parts of carboxymethyl cellulose and 1 to 2 parts of additive. According to the folding-resistant damp-proof packaging carton and the preparation method thereof, the defects that a packaging carton is prone to being affected with damp, cracks exist after being folded for multiple times, and the packaging carton is difficult to reuse are overcome. Through the modified plant fibers and the high-toughness plant fiber-based composite material, the folding resistance of the packaging carton is effectively improved, and meanwhile, the moisture resistance of the carton is also improved.

The invention discloses a natural eutectic solvent enhanced konjac glucomannan film as well as a preparation method and application thereof, and belongs to the technical field of food packaging. The konjac glucomannan film enhanced by the natural deep eutectic solvent, provided by the invention, comprises konjac glucomannan, the natural deep eutectic solvent and gallic acid modified MXene nanoparticles; the mass ratio of the konjac glucomannan to the natural eutectic solvent to the gallic acid modified MXene nanoparticles is (850 to 950) to (50 to 250) to (10 to 40). Through the synergistic effect of all the components, the defects that KGM is insufficient in intrinsic mechanical strength, weak in antibacterial and antioxidant performance and poor in moisture resistance are overcome, the comprehensive performance of the film is remarkably improved, and the film can be used for cold-chain packaging of high-value fresh food and has environment friendliness and functional practicability.

The invention discloses a high-strength moisture-proof gypsum board and a preparation method thereof, and relates to the technical field of gypsum board preparation. The high-strength moisture-proof gypsum board is prepared by dipping the surface paper in the composite dipping liquid and then pouring the surface paper and the gypsum core with the waterproof agent, the composite dipping liquid comprises the methoxy vinyl ether copolymer and the epoxy polyoxymethylene dimethyl ether, and the methoxy vinyl ether copolymer is 2, 3, 5-trimethyl-1, 3-pentanediol monoisobutyrate. According to the present invention, epoxy polyoxymethylene dimethyl ether is prepared by reacting 2, 4-dimethoxymethoxyphenylacetic acid with 2-hydroxyethyl vinyl ether, and the epoxy polyoxymethylene dimethyl ether is prepared by terminating polyoxymethylene dimethyl ether with allyl and then reacting with phthalimide hexperoxy acid, such that the waterproofness and the mechanical property of the gypsum board are improved; the waterproof agent is prepared by reacting hydrogen-containing silicone oil and fluorine-containing hyperbranched amide polyurea urethane, so that the moisture resistance and bonding strength of the gypsum board surface paper are enhanced, and additional mechanical support is provided for the gypsum board.

The invention relates to the field of sealing plates, in particular to an environment-friendly moisture-proof density board and a preparation method thereof, and the environment-friendly moisture-proof density board comprises the following components in parts by mass: 50-70 parts of modified wood fiber, 30-50 parts of bamboo fiber, 8-15 parts of a modified isocyanate adhesive, 0.5-3 parts of nano silicon dioxide, 0.3-1 part of a vegetable oil release agent and 0.08-0.15 part of a curing agent. Through combination of natural renewable raw materials and innovative materials and combination of refined process regulation and control and multifunctional integrated design, compared with the prior art, the environment load is remarkably reduced, the moisture resistance and moisture resistance are improved, meanwhile, the flame-retardant and antibacterial properties are considered, the structural stability is optimized, and the service life is prolonged. The method can be widely applied to furniture manufacturing, building decoration and high-humidity environment scenes, and has green, sustainable and high-adaptability application prospects.

The invention discloses a low-temperature-resistant bending-resistant cable for new energy, relates to the technical field of cables, and solves the problem of short service life of a cable caused by poor protection performance and durability of the cable for new energy in the prior art. Comprising an inner core structure, the inner core structure comprises a conductor layer, the conductor layer is composed of a plurality of conductors distributed in an array, and each conductor is wrapped by an insulating layer; the cable is characterized in that the outer part of the inner core structure is wrapped with a wrapping shielding layer; the outer sheath wraps the wrapping shielding layer, the outer sheath comprises a low-temperature-resistant layer, a buffer layer, a supporting layer and a reinforcing layer, the low-temperature-resistant layer wraps the lining layer, the buffer layer wraps the low-temperature-resistant layer, and the supporting layer wraps the buffer layer and is located on the inner side of the reinforcing layer; the cable is kept stable at extreme temperature, stress damage can be reduced, the cable is not hardened at low temperature and can be tightly attached to form sealing, and moisture resistance is improved.

The invention discloses a UV curing adhesive for coating a low-refractive-index optical fiber and a processing method thereof, belongs to the technical field of adhesive preparation, and is used for solving the technical problem that the refractive index and the damp-heat resistance of the UV curing adhesive for coating the optical fiber in the prior art need to be further improved. The preparation method comprises the following steps: introducing a low-refractive-index hybrid siloxane prepolymer, a multi-component interface bonding prepolymer and a modified branched polyester prepolymer into a system together, and constructing a compact and uniform organic-inorganic three-dimensional network in a curing process by utilizing silica condensation, interface chemical bonding and a flexible chain segment cross-linking reaction, the low-refractive-index hybrid siloxane prepolymer endows a film layer with a stable refractive index, the multi-component interface bonding prepolymer enhances the binding force of a base material, the modified branched polyester prepolymer improves stress buffering and toughness, and the obtained cured film is low in refractive index, firm in interface bonding and small in mass change in a humid and hot environment and shows excellent optical stability and long-term reliability.

The invention relates to the technical field of electronic packaging materials, in particular to a phthalonitrile modified thermosetting resin composition containing a siloxane structure and application of the phthalonitrile modified thermosetting resin composition in the electronic packaging materials. The composition comprises multifunctional epoxy resin, XYLOK phenolic resin, a curing accelerator, a modifier and an inorganic filler, and the modifying agent is eugenol phthalonitrile trisiloxane. The modifier disclosed by the invention has good mechanical compatibility and dispersity in matrix resin; when the epoxy resin is applied to a thermosetting resin system, the processability can be improved, and the toughness of a cured product can be effectively improved while the glass-transition temperature is increased, so that the cured product has excellent bending property; the composition has excellent thermal stability, low bending modulus, good impact performance and humidity and heat resistance after being cured, the glass transition temperature of the composition is effectively improved, the comprehensive performance of resin is remarkably improved, and the composition is suitable for improving the packaging reliability and environmental stability of semiconductor devices.

The invention relates to the technical field of semiconductor packaging materials, in particular to a resin composition for sealing an electronic device, and the existing epoxy resin composition comprises solid / powder nanoscale filler so as to reduce CTE and inhibit the exudation problem. However, it is very difficult to add a solid / powder nanoscale filler to an epoxy resin composition, which will result in a sharp increase in overall viscosity and even unable to mix evenly. By adding the colloid filler, the viscosity of the prepared resin composition is low, which means that the filler loading capacity in the resin composition (bottom filler) can be further increased, and the overall excellent moisture resistance and better temperature resistance of the composition can be improved. In addition, since the loading amount of the filler is increased, the CTE of the cured resin composition is reduced, and thus the reliability of the cured resin mixture can be improved.

The invention discloses a connector with an in-place plugging detection function. The connector comprises a plug and a socket, the plug comprises a plug shell assembly, a pin base assembly and a clamping ring; the needle base assembly is composed of an upper needle base, a lower needle base, an interface sealing gasket, a contact pin and a detection lifting pin; the socket comprises a socket shell, a hole base assembly, a sealing ring and a clamping ring; the hole base assembly is composed of an upper hole base, a lower hole base, a jack assembly, an adapter pin and a spring needle. When the plug and the socket are not plugged, the device can detect that the plug and the socket are in a non-plugging state through a loop connected by the jack assembly and the spring needle; when the plug and the socket are plugged in place, equipment can detect that the plug is in place by detecting a loop connected between the lifting pin and the spring needle, so as to detect the plugging state of the connector. And based on a shell structure of a GJB599B series III, the high-voltage switch cabinet has higher salt mist resistance, strong vibration resistance, water resistance, moisture resistance, dust resistance and the like.

The invention relates to the field of processing of capacitor packaging coatings, and particularly discloses a quick-drying packaging coating for a thin-film capacitor, a preparation method and application. The quick-drying packaging coating for the thin film capacitor consists of a component A and a component B in a mass ratio of 100: (90-100), the component A comprises 30-50 parts of organic silicon modified epoxy resin, 20-30 parts of polyether polyol, 10-25 parts of toughening filler, 1-3 parts of a coating tackifier, 1-3 parts of a flow promoter and 0.5-1 part of a defoaming agent; the component B comprises the following components in parts by weight: 45-75 parts of a curing agent, 1-2 parts of an accelerant, 1-1.5 parts of an antioxidant and 1-2 parts of a weather-resistant agent; the preparation method comprises the following steps: respectively preparing the component A and the component B, respectively packaging, and mixing while using to obtain the packaging coating. The method is applied to a thin-film capacitor. The quick-drying water-based paint has the advantages of quick drying, good moisture resistance, good flexibility and high adhesion stability.

The invention belongs to the field of food additives-compound coating agents and medicine solid preparation thin film coating premixing agents, and relates to a preparation method of a solid dispersion and a water-based gastric-soluble efficient moisture-proof coating composition containing the solid dispersion. According to the solid dispersion provided by the invention, stearic acid and magnesium stearate are selected as indissolvable components, polyglycerol fatty acid ester is used as a surfactant, hydroxypropyl methylcellulose / hydroxy propyl cellulose / sodium alginate is used as a carrier, and a grinding process is combined to treat the raw materials, so that a good synergistic effect is formed among the components; and the solid dispersion which can be stably amorphized is prepared. Tests find that the content of insoluble components in the prepared solid dispersion is obviously improved unexpectedly, and a coating composition of a carrier containing the solid dispersion has extremely excellent moisture resistance after film formation.

The invention discloses a moisture-proof corrugated paper generation method and system based on machine vision. Humidity distribution data are obtained through image acquisition equipment, uniformity deviation characteristics are extracted through an image processing algorithm and input into an intelligent analysis model, and if deviation exceeds a threshold value, a coating thickness adjusting signal is output to determine the spraying amount of a moisture-proof agent; then, on the basis of the spraying amount, a structural integrity image in the forming stage is collected, deformation parameters are extracted, a production parameter optimization instruction is generated through a feedback verification unit in combination with the effect mapping relation model, an execution mechanism is driven to adjust the pre-drying temperature and the forming pressure, and meanwhile finished product moisture resistance detection data are obtained; finally, a closed-loop regulation and control cycle is formed through detection data and deviation characteristics, model parameters are optimized, deviation changes are continuously monitored, the mapping model is dynamically adjusted to adapt to different paper types, intelligent real-time optimization is achieved, and the production efficiency and the moisture-proof performance stability are improved.

The invention discloses polyurethane glue with heat conduction and insulation characteristics for a self-adhesive label and a preparation method of the polyurethane glue, raw materials of the glue comprise a polyurethane prepolymer, an organic silicon modifier, nano montmorillonite and the like, and a glue layer has a structure in which a heat conduction compact phase and an insulation porous phase are combined with each other. The organic silicon modifier endows hydrophobicity, and the nano-montmorillonite hinders moisture permeation, reinforces the fiber to support a cellular structure and improves mechanical properties. The preparation method comprises the following steps: preparing a polyurethane prepolymer, modifying organic silicon, dispersing nano montmorillonite and the like, and synergistically improving various properties of the glue by controlling the conditions of each step and the ratio of raw materials. The glue disclosed by the invention is excellent in moisture-proof, heat-conducting, insulating and mechanical properties, can meet the use requirements of the self-adhesive label in a complex environment, and solves the problems that the existing glue is single in performance and cannot meet high-end application scenes.

The invention relates to a preparation method of a damp-proof antibacterial medicine packaging composite material with multiple barrier functions, and belongs to the technical field of medicine packaging materials. Enabling the composite complexing nano-silver, polyethylene and zinc stearate to pass through a double-screw extruder to obtain nano-silver antibacterial master batches; adding the nano-silver antibacterial master batch, a mixture of linear polyethylene and an ethylene-vinyl alcohol copolymer, an antioxidant 1010 and silicon dioxide into a single-screw extruder to obtain a damp-proof antibacterial film layer; uniformly coating a polyurethane adhesive on the surface of the damp-proof and antibacterial film layer, compounding an aluminum foil and the film layer coated with the adhesive on a compounding machine, and curing to obtain an aluminum foil-damp-proof and antibacterial film layer; the surface of the aluminum foil-damp-proof antibacterial film layer is coated with a polyurethane adhesive, and then the aluminum foil-damp-proof antibacterial film layer is compounded with a biaxially oriented polypropylene film and cured. The packaging composite material prepared by the invention has excellent moisture resistance, antibacterial ability, barrier property and mechanical property.

The invention relates to the technical field of powdered ink, and discloses a plant-based environment-friendly powdered ink composition which comprises the following components: resin, a coloring agent, a charge control agent, wax / a release agent and an additive. The resin comprises polyester resin and bio-based resin. The polyester resin comprises polyhydric alcohol and polybasic acid. The polyol comprises ethylene glycol, neopentyl glycol and a bisphenol A derivative. The polybasic acid comprises terephthalic acid, isophthalic acid and oxalic acid. Compared with the prior art, the plant-based environment-friendly powdered ink composition provided by the invention has the advantages that the plant-based environment-friendly powdered ink composition is based on a plant-oil-based biodegradable material and is prepared from plant oil, polyhydric alcohols and polybasic acid compounds, so that the excellent biodegradability and moisture resistance of the plant oil are kept; and when the resin is used for preparing the biological powdered ink, the biodegradability and moisture resistance of the powdered ink can be effectively improved, and the biological powdered ink prepared from the resin has excellent biodegradability, moisture resistance, performance retentivity and fixing strength.

The utility model relates to the technical field of distribution box equipment, in particular to a distribution box with a lifting moisture-proof function, which comprises a bottom frame, a protective eave is fixedly connected to the top end of the bottom frame, an electric push rod is fixedly connected to the bottom end of the protective eave, and a box body is fixedly connected to the bottom end of the electric push rod. A humidity sensor is arranged in the box body; the ventilation mechanism comprises an exhaust frame arranged at the top end of the box body, and a fan is arranged in the exhaust frame; the ventilation mechanism can plan the path of an air duct for ventilation and heat dissipation, can dry entering air, reduce the humidity of gas entering the box body and ensure effective heat dissipation operation on the device, and is matched with an electric push rod and a humidity sensor, so that the humidity in the box body can be monitored, and when the external humidity is relatively large, the ventilation mechanism can be used for monitoring the humidity in the box body. The lifting operation of the box body can be achieved, the device is prevented from being affected by surface accumulated water, meanwhile, the plugging operation of the box body is achieved, and the moisture-proof performance of the device is improved.

The invention relates to a damp-proof multifunctional air bubble film packaging bag which comprises a first air bubble film and a second air bubble film which are oppositely arranged, the first air bubble film and the second air bubble film comprise the first air bubble film and the second air bubble film which are oppositely arranged, and the three edges of the first air bubble film and the three edges of the second air bubble film are connected with edge sealing layers in a sealed mode. A top sealing structure is arranged on the outer surfaces of the upper ends of the first air bubble film and the second air bubble film, a fixing strip is fixedly connected to the inner surface of the front end of the top sealing structure, and the top sealing structure comprises a second sealing strip and a first sealing strip. The packaging bag has the beneficial effects that many defects of a traditional packaging bag in the aspects of moisture resistance and sealing performance are effectively overcome, the packaging bag has excellent physical protection performance and functional characteristics through the design of the six-layer functional composite film structure, the durability of the packaging bag is greatly improved through the arrangement of the anti-abrasion layer, and the effect that damage caused by friction in the transportation process is avoided.

The invention provides a preparation method of a perforated UHPC board fireproof, high-temperature-resistant, waterproof and moisture-proof strong sound absorption composite material, and belongs to the technical field of UHPC boards. An optimal perforation parameter combination is calculated through a two-layer nested optimization function system; preparing UHPC slurry and adding polypropylene fibers for toughening; carrying out pouring molding by adopting a vacuum vibration process and carrying out steam curing; performing precise perforation according to the optimized parameters; the basalt fiber cloth is adhered to the back surface to enhance the low and medium frequency sound absorption performance; the surface is coated with nano silicon dioxide sol to form a waterproof and moistureproof protection layer; performing acoustic performance evaluation to ensure that the medium-frequency sound absorption coefficient is greater than or equal to 0.7 and the high frequency is greater than or A fireproof performance test is carried out to ensure that an A-grade fireproof grade and a 2-hour fire endurance are reached; finally, performing a waterproof and moisture-proof performance test to ensure the water absorption rate lt; and 50 times of damp-heat circulation can be resisted. The optimal parameters comprise common perforation UHPC: the hole diameter is 5mm, the distance between the circle centers of two holes is 12mm, and the perforation rate is 13%; the method realizes organic unification of sound absorption performance and special environment adaptability.

The invention relates to the field of high polymer materials, and particularly discloses a high-oxygen-barrier moisture-barrier PE film and a process. The high-oxygen-barrier moisture-barrier PE film comprises a corona layer, a barrier layer and a heat sealing layer which are connected in sequence, the barrier layer comprises the following raw materials in parts by weight: 90-95 parts of polyethylene and 5-10 parts of polyvinylidene chloride, and the heat sealing layer is made of a polyethylene material; in addition, the preparation method provided by the invention has the advantages that the oxygen and moisture resistance of the polyethylene single film is improved, and meanwhile, the printing requirement is met.

The utility model relates to the technical field of carton structures, in particular to a waterproof and moistureproof coating carton structure, which comprises a carton body and is characterized in that at least two pairs of oppositely arranged double-layer folding cover plates are arranged at the top of the carton body, soft sealing strips are arranged on the long edges of the periphery of the top of the carton body, a moistureproof lining partition plate is arranged in the carton body, and the waterproof and moistureproof coating carton structure is arranged in the carton body. According to the utility model, a multi-layer structure is adopted to realize omnibearing water resistance and moisture resistance, the surface of the box body is coated with a polyurethane waterproof coating, and the top of the box body is provided with a double-layer folding cover plate and a sealing strip to reinforce sealing; honeycomb PP plastic partition plates are arranged inside to achieve dry and wet isolation. The bottom adopts a waterproof base matched with an arc-shaped diversion trench to discharge accumulated water; a disposable humidity sensing label is arranged to monitor humidity in real time; the cover plate is formed by compounding craft paper and PE coated paper, so that the cover plate is high in strength and moisture-proof; the handle holes are provided with double-layer reinforcing ribs to improve the bearing capacity. The structure integrates waterproof, moisture-proof and load-bearing functions and the like, and meets the use requirements of complex environments.