124results about How to "Guaranteed barrier properties" patented technology

The invention relates to a three-layer composite water-absorption pad non-woven fabric and a production method. According to the three-layer composite water-absorption pad non-woven fabric, polypropylene spunbond cloth and pulp composite cloth are taken as base materials and coated with a low-density polypropylene film. By taking a polypropylene spunbond cloth layer as a support layer, a product has very strong power, one side of the composited product has excellent water absorption property, and the other side of the composited product has anti-sliding and waterproof effects. Pulp fibers have super-hygroscopicity, the non-woven fabric is endowed with the super-hygroscopicity through spunlacing, and one side of the polypropylene spunbond cloth of the spunlaced product is coated with the film, so that the integral adhesiveness of the composite product is guaranteed, and the hygroscopicity and barrier property of the composite product are guaranteed. By utilizing a cross-pattern embossing roller, each layer of the product is well laminated, and meanwhile, the product has good skid resistance and wear resistance and a novel pattern appearance. The polypropylene spunbond cloth and the polyethylene film can be prepared into colored products, so that the composite product is integrally colorful and can meet various requirements of customers.

The invention provides a flexible organic light-emitting diode (OLED) display panel. The flexible OLED display panel comprises a flexible substrate, an OLED device and a thin film encapsulation layer,wherein the OLED device is arranged on the substrate, the thin film encapsulation layer is arranged on a surface of the OLED device and at least comprises two thin film encapsulation units independent to each other, the at least two thin film encapsulation units cover a surface, deviating from the flexible substrate, of the OLED device in a mode of one-dimensional array or two-dimensional array,and a gap is formed between edges of adjacent two thin film encapsulation units. By the flexible OLED display panel, the technical problem that the flexible OLED display panel of the prior part is easy to crack during bending by encapsulation of the whole thin film encapsulation layer to cause that water and oxygen enter the device through cracks to further cause failure of the OLED device is solved.

The invention discloses a graphene oxide/cobalt-based composite plating as well as a preparation method and application thereof. The preparation method comprises the following steps: soaking cobalt, nickel or a cobalt-nickel alloy serving as a positive electrode and a workpiece to be plated serving as a negative electrode in a composite electroplating solution for ultrasonic oscillation; performing electro-deposition on the workpiece to be plated by adopting pulse current to obtain the graphene oxide/cobalt-based composite plating, wherein the composite electroplating solution is prepared from30 to 200 g/L of cobalt salt, 30 to 200 g/L of nickel salt, 5 to 80 g/L of phosphate, 10 to 60 g/L of boric acid, 10 to 50 g/L of a complexing agent, and 0.1 to 5 g/L of graphene oxide and the balance of deionized water. The preparation method is simple, efficient and environmentally friendly. The composite plating has the advantages of high hardness, superior wear resistance and corrosion resistance, and can be widely applied to various mechanical parts which have high requirements on hardness, wear resistance, low friction coefficient and high corrosion resistance as a functional protectionlayer.

The invention discloses an organic light-emitting diode device. The device comprises a substrate, an OLED unit disposed on the substrate, and a packaging structure which is connected with the substrate and is used for packaging the OLED unit. The packaging structure comprises a water and oxygen absorbing layer disposed on the surface of the OLED unit, an inorganic nano-organic copolymer mixed layer disposed on the surface of the water and oxygen absorbing layer in a coated manner, and an inorganic blocking layer which is deposited on the surface of the inorganic nano-organic copolymer mixed layer. The device provided by the invention is excellent in water and oxygen blocking capability, is small in thickness, and is strong in interface bonding force. The invention also provides a preparation method for the device.

The invention provides functional lining body paper for cigarettes and a preparation method of the functional lining body paper. The body paper is of a double-layer structure, one layer is a lining paper body paper base layer, and the other layer is a functional coating. The preparation method comprises the following steps: performing pulping treatment on a fiber raw material; adding a wet strength agent, a sizing agent, a defoaming agent, a retention aid and a reinforcing agent into the pulp after the pulping treatment is finished, performing uniform mixing, and applying the pulp to a mesh for treatment; performing squeezing dehydration treatment on the pulp subjected to treatment by the mesh to obtain the body paper base layer; coating the surface of the body paper base layer by a functional coating; and sequentially drying, coiling and slitting the coated body paper base layer to obtain the body paper. According to the invention, the surface of the body paper base layer of the lining paper for cigarettes is coated by the functional coating, so that the lining paper for cigarettes has high-barrier, moisture-preserving and moisture-preserving functions, and compared with conventional printing lining paper and pre-coated lining paper, the body paper of the lining paper for cigarettes has a lower water vapor transmission rate and a water absorption rate and higher wet strength.

The invention discloses a human body respiratory protection method and device. The human body respiratory protection method includes the steps that a respiratory bag cavity is formed between a transparent mask a human face, and air which is subjected to sterilization treatment by a filtration and sterilization device or an electronic sterilization device is introduced into the respiratory bag cavity, so that the air pressure in the respiratory bag cavity is higher than the air pressure outside the respiratory bag cavity. The air in the respiratory bag cavity flows out from gaps between the edge of the transparent mask and the face to form isolated air flow, the isolated air flow is used for preventing the air outside the respiratory bag cavity from entering the respiratory bag cavity. According to the human body respiratory protection method and device, the air in the respiratory bag cavity is blown out from the peripheral gaps between the transparent mask and the human face, the outside air can be prevented from entering the respiratory bag cavity, and thus it is ensured that the air that people breathes in is free of viruses and harmful bacteria, and the purpose of preventing cross infection is achieved. And the air flow in the respiratory bag cavity is always flowing, an exhaled dreggy gas can be quickly exhausted, the feeling that the mask hinders breathing and the pressureof wearing the mask on the face and ears do not exist, and the use comfort is good.

The invention discloses a protective film for an STP building exterior wall thermal-insulation fire-retardant material. The protective film comprises an aluminum-coated glass-fiber gridding cloth layer, an aluminum layer, a polyester (PET) layer, a two-way stretch nylon layer, an aluminum layer, a two-way stretch nylon layer and a compound polyethylene layer which are respectively arranged from outside to inside. Compared with the prior art, the protective film for the STP building exterior wall thermal-insulation fire-retardant material comprises the following characteristics that a flexible packaging material is good in smoothness effect and excellent in barrier effect and ageing resistance. The protective film disclosed by the invention is packaged outside a panel, and thus, not only is a protection function performed but also the barrier effect is performed on cement and adhesives, and the barrier effect is performed on temperature and noise.

The invention relates to outdoor tent fabric with an efficient, uvioresistant and heat-insulating coating. After a base blank is subjected to desizing, dyeing and shaping, the mode of repeated coating for two times is used, wherein the coating finishing step comprises the sub-steps as follows: 1, base coating: selecting two-liquid polyurethane resin and adding amino-modified small-particle-size inorganic oxide hollow microspheres for compounding; and 2, surface coating: selecting PU color glue to be compounded with modified large-particle-size inorganic oxide hollow microspheres. Inorganic oxide hollow microspheres/polyurethane coatings with gradient particle sizes are selected, infrared rays and ultraviolet rays in sunlight are blocked and reflected through two times of coating processes, penetration of light rays is effectively blocked, and the inorganic oxide hollow microspheres are modified through an amino silane coupling agent, so that the inorganic oxide hollow microspheres have better compatibility and dispersity in polyurethane, chemically bonded inorganic oxide hollow microspheres/polyurethane coatings are formed, and uniform and firm adhesion of the coating to fabric is better facilitated.

The invention relates to a water isolation type coal mine refuge chamber transition chamber and a method for entering the chamber to solve the problem of harmful gas isolation in the chamber entering process of an existing underground coal mine refuge chamber. The structure of the transition chamber comprises a chamber surrounding wall (1), a transition chamber outside door wall (2), a transition chamber middle wall (3), a transition chamber inside door wall (4), a transition chamber outside safety door (5), a water storage basin (6), a transition chamber inside safety door (7), a midfeather air-tight door (8) and a midfeather observation window (9). When entering into the chamber, a miner takes off thick and heavy outerwear, opens the refuge chamber outside safety door (5), dives into the transition chamber water storage basin (6), passes through a lower channel of a middle separation board, and then opens the inside safety door (7) to enter into a personnel survival chamber.

The invention discloses a slurry overflow prevention clamping slot type cylindrical formwork plate and a construction method and belongs to the technical field of building cylindrical formwork plates.The slurry overflow prevention clamping slot type cylindrical formwork plate at least comprises two circular arc formwork plate bodies, first connecting parts are fixedly connected to the two ends ofthe two circular arc formwork plate bodies, first connecting holes are formed in the first connecting parts, reinforcing rib plates and connecting steel plates are fixedly connected to the outer walls of the two circular arc formwork plate bodies, second connecting parts are fixedly connected to the two ends of one circular arc formwork plate body, second connecting holes, positioning grooves andflow blocking grooves are formed in the two second connecting parts, third connecting parts are fixedly connected to the two ends of one circular arc formwork plate body, third connecting holes, positioning parts and flow blocking parts are arranged on the two third connecting parts, fourth connecting parts are connected in the third connecting holes and the corresponding second connecting holesin a matched mode, the positioning parts are matched with the positioning grooves, the flow blocking parts are matched with the flow blocking grooves, slurry overflowing and leaking at joints of cylindrical formwork plates can be effectively prevented in concrete construction, and meanwhile the perpendicularity of concrete and the construction quality can be ensured.

The invention relates to a river-side coal mine old goaf water disaster inspection and treatment integrated treatment method. The method comprises the following steps that a waterproof curtain inspection and treatment exploration line is arranged between an earth surface river and a mine area boundary, and the waterproof curtain inspection and treatment exploration line passes through an underground goaf in a to-be-treated mine area; in the exploration drilling construction process on the waterproof curtain inspection and treatment exploration line, grouting plugging is conducted on the interior of an exploration drilling hole of an exposed goaf, a curtain wall grouting section is formed, and the curtain wall grouting section and a solid stratum section jointly form a waterproof curtain wall. By constructing the curtain wall, supply of surface rivers to the old goaf is effectively isolated, the threat of shallow water to mine mining is relieved, the construction period is short, the cost is low, and the blocking effect is good.

The invention relates to a medicinal symmetrical cold-forming aluminum-casting plate. The medicinal symmetrical cold-forming aluminum-casting plate is of a layered structure and composed of an aluminum base layer, novel functional adhesive resin (AD) closely attached on the outer side and the inner side of the aluminum base layer, an outer layer and an inner layer, wherein the outer layer sequentially comprises a polyamide (PA) layer, novel functional adhesive resin (AD) and a homo-polypropylene (PP) layer, and the inner layer comprises a PA layer, novel functional adhesive resin (AD) and a homo-polypropylene layer; the relatively thick aluminum base layer has good ductility and good mechanical property and also has good barrier property; the PA layers can well protect the aluminum base layer, can uniformly stretch especially during molding and can ensure the molding depth; the homo-polypropylene (PP) layers can ensure the barrier property and prevent the PA protective layers from being scratched; the inner layer is made of a PP material, has good stability and drug resistance, has good low-temperature heat-sealing property and high heat-seal strength; and the whole structure material is symmetrical, has uniform stress and is free from edge warping phenomenon after pit scouring.

The invention discloses a hot melt adhesive for polyolefin, which is prepared from, by weight, 100 parts of polypropylene random copolymer, 1-20 parts of halogenated butyl rubber, 0.05-15 parts of modified montmorillonite, 0.05-15 parts of polyethylene glycol, and 0.01-5 parts of an antioxidant. The softening point of the hot melt adhesive is 125-140 DEG C. The softening point of the polypropylene random copolymer is 125-140 DEG C. The halogenated butyl rubber is one or two of chlorinated butyl rubber or brominated butyl rubber. The modified montmorillonite is prepared through intercalation modification to montmorillonite raw ore with polyethylene glycol. The preparation method of the hot melt adhesive includes the steps of 1) melt-blending the modified montmorillonite with the polypropylene random copolymer, halogenated butyl rubber, polyethylene glycol and antioxidant; and 2) discharging the material and shearing the material into granules to obtain a product of the hot melt adhesive. The hot melt adhesive is used for adhesion of a polyolefin thin film and a polyolefin catheter, especially, for adhesion of medical polypropylene materials.

The invention discloses a steel fireproof door for an inflammable storage warehouse, and relates to the technical field of fireproof doors. The steel fireproof door aims at solving the locking problem. The steel fireproof door specifically comprises a door frame, door leaves, a connecting mechanism used for connecting the door frame with the door leaves, closing mechanisms used for ensuring that the door leaves are normally closed and an automatic locking mechanism used for locking the door leaves when a fire occurs, wherein the automatic locking mechanism comprises clamping blocks arranged inone of the door leaves and clamping grooves formed in the other door leaf and matched with the clamping blocks; and containing grooves are formed in the inner walls of the door leaves, and containingcylinders are fixedly arranged on the inner walls of the containing grooves. According to the steel fireproof door for the inflammable storage warehouse, by arranging the automatic locking mechanism,if the fire occurs, liquid inside the containing cylinders is heated and evaporated, therefore the internal pressure intensity of the containing cylinders is sharply increased, locking pistons push piston connecting rods to stretch out, and then the clamping blocks stretch out and are inserted into the clamping grooves, so that it is guaranteed that the two door leaves are mutually locked, and the blocking effect is safely and reliably achieved.

The invention relates to a curtain grouting method for a large-space large-dip-angle goaf. The curtain grouting method comprises the following steps: an inspection and treatment exploratory line of a waterproof curtain is arranged between a surface river and a mining area boundary; feeding drill holes are densely constructed around the exploring drill holes of the exposed goaf on the two sides of the exploratory line of the waterproof curtain; and cement-water glass double slurry is poured into the underground goaf through the exploring drill holes of the exposed goaf, and coarse aggregate quick-setting concrete is poured into the underground goaf through the feeding drill holes. The curtain wall is constructed between the surface river and the mining area boundary to effectively isolate the supply of the surface river to the old goaf, and effective treatment of the large-space goaf and the coal and rock layer mining area with the large dip angle is achieved.