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70results about How to "Reduce migration speed" patented technology

Fog-dissipation and anti-dropping polyvinyl chloride greenhouse film and preparation method thereof

The invention relates to a fog-dissipation and anti-dropping polyvinyl chloride greenhouse film and a preparation method thereof, and belongs to the technical field of polymer materials. The preparation method is characterized in that 100 parts by weight of a polyvinyl chloride resin is adopted as the main raw material, 2.5-5.0 parts by weight of a composite anti-fogging and anti-dropping additive is added, and a three-layer co-extruding composite calendering process is adopted to prepare the greenhouse film with a three-layer composite structure, wherein the concentration of the composite anti-fogging and anti-dropping additive in the middle layer is 1.5-2.5 times the concentration of the composite anti-fogging and anti-dropping additive in the surface layer, the thickness of the middle layer is 2-3 times the thickness of the surface layer, and the composite anti-fogging and anti-dropping additive is formed by carrying out an intercalation reaction on 10-15 parts by weight of a composite anti-fogging agent, 25-50 parts by weight of a composite anti-dropping agent, and 40-80 parts by weight of a slow-release agent. The durable fog-dissipation and anti-dropping polyvinyl chloride greenhouse film preparation method is the intercalation-material matching and mixing-calendering process of the anti-fogging agent, the anti-dropping agent and the slow-release agent. The fog-dissipation and anti-dropping polyvinyl chloride greenhouse film has effects of fog-dissipation and anti-dropping.
Owner:CHINA PETROLEUM & CHEM CORP

Epitaxial wafer of light-emitting diode and preparation method thereof

The invention discloses an epitaxial wafer of a light-emitting diode and a preparation method thereof, and belongs to the technical field of semiconductors. The epitaxial wafer comprises a substrate, a buffer layer, an undoped gallium nitride layer, an N-type gallium nitride layer, a defect blocking layer, a first stress release layer, a second stress release layer, a third stress release layer, a light emitting layer and a P-type gallium nitride layer, and is characterized in that the buffer layer, the undoped gallium nitride layer, the N-type gallium nitride layer, the defect blocking layer, the first stress release layer, the second stress release layer, the third stress release layer, the light emitting layer and the P-type gallium nitride layer are sequentially laminated on the substrate, the defect blocking layer is a silicon-doped aluminum gallium nitride layer, the first stress release layer is a silicon-doped gallium nitride layer, the second stress release layer comprises a plurality of first sub-layers and a plurality of second sub-layers which are arranged in an alternately laminating manner, the first sub-layers are undoped InGaN layers, the second sub-layers are silicon-doped gallium nitride layers, and the third stress release layer is a silicon-doped InGaN layer; and the doping concentration of silicon in the defect blocking layer is lower than that of the first stress release layer, the doping concentration of silicon in the first stress release layer is higher than that of each second sub-layer, and the doping concentration of silicon in each second sub-layer is lower than that of the third stress release layer. The light emitting efficiency can be improved according to the invention.
Owner:HC SEMITEK ZHEJIANG CO LTD

High-toughness high-water-steam-baffled completely-biodegraded composite multilayer film and preparation method thereof

The invention relates to the technical field of polymer materials, and specifically relates to a high-toughness high-water-steam-baffled completely-biodegraded composite multilayer film and a manufacturing method thereof. The film comprises a structure from the second layer to the seventh layer and is composed of a PBAT based high-toughness high-barrier biodegradable material (A), a high-weatherability high-barrier biodegradable material (B), and a high-toughness functional biodegradable material layer (C). A multi-layer co-extrusion film blowing technology is adopted. Multiple material layers are compounded to prepare the film. The film is highly tough, the tensile strength can reach 18 MPa, the horizontal/vertical breaking elongation rate can reach more than 500%, no prominent difference exists in the vertical direction and the horizontal direction, the water steam baffling performance is strong, the water steam penetration rate of the film with a thickness of 10 [mu]m is 240 g/m2.24h; the processing performance is good, the minimal thickness of the film can reach 5 [mu]m; the processing equipment does not need frequent adjustment, and the film is used as a package film, an agricultural cover film, and the like.
Owner:SHANGHAI HONGRUI CHEM PROD CO LTD

Method for producing latex foamed product by using low-protein latex

PendingCN110982131AReduce allergies and other hazardsImprove foam stabilityPolymer scienceFoaming agent
The invention relates to the technical field of latex foamed products, in particular to a method for producing a latex foamed product by using low-protein latex. The natural latex foamed product is prepared from the following raw materials in parts by weight: 100 parts of latex, 2-5 parts of a vulcanizing agent, 0.5-6 parts of a foaming agent, 1-5 parts of a foam stabilizer, 0.5-1.5 parts of a gelatinizing agent, 3-5 parts of an active agent, 3-12 parts of an auxiliary agent and 1-15 parts of a filler. The natural latex in the preparation raw materials of the natural latex foamed product provided by the invention is low-protein natural latex, and has the characteristics of nature, environmental protection, no pollution, no toxicity, antianaphylaxis and the like. Proper amounts of the foamstabilizer and the active agent are added in the production and preparation process of the latex foamed product; meanwhile, the production process parameters are changed, so that the prepared latex foamed product has good foam stability, uniform foam pore size, regular and stable pore structure, few internal defects and the like, the prepared foamed product has good resilience, and the tensile strength, elongation at break, resilience rate and the like are remarkably improved.
Owner:RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI

Frozen pre-deep-fried fish and shrimp type powder-coating food and preparation method thereof

The invention belongs to the field of food processing, and discloses a frozen pre-deep-fried fish and shrimp type powder-coating food. The frozen pre-deep-fried fish and shrimp type powder-coating food comprises the following components in parts by weight: 50-60 parts of core materials, 2-6 parts of pre-coating powder, 15-25 parts of coating starch, 13-22 parts of bread crumbs and 2-4 parts of palm oil. The invention further discloses a preparation method of the frozen pre-deep-fried fish and shrimp type powder-coating food. According to the frozen pre-deep-fried fish and shrimp type powder-coating food and the preparation method disclosed by the invention, fish meat and shrimp meat are used as main raw materials for making the powder-coating deep-fried foods, and nutritive white meat protein is provided; besides, the compounding ratio of optimal water retention auxiliary materials of the core materials, the compounding ratio of flavor, and the type of outer-layer starch bran are improved, seasoning water retention slurry is mixed, bran is coated, after deep-frying is performed, freezing is performed, and packaging is performed so that the frozen pre-deep-fried fish and shrimp type powder-coating food which is good in appearance, good in mouth feel, good in tissue, good in flavor, capable of being subjected to microwave treatment and resistant to heat preservation can be obtained. The frozen pre-deep-fried fish and shrimp type powder-coating food can be heated from a frozen state through a commercial or household microwave oven, and then the heated frozen pre-deep-fried fish and shrimp type powder-coating food can be subjected to heat preservation in a hot cabinet for 2-4 hours for sale and supply.
Owner:SHENZHEN ALLIED AQUATIC PROD DEV LTD

Cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and repairing method

The invention belongs to the technical field of non-point source pollution repairing and particularly relates to cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and a repairing method. The cornstalk biochar is prepared from raw material components in parts by weight as follows: 50-200 parts of cornstalk charcoal and 0.1-0.5 parts of a microbial agent. The repairing method comprises steps as follows: preparation of the cornstalk biochar, application of the cornstalk biochar, crop planting and the like. The cornstalk is pretreated with a calcium chloride solution, so that the adsorptive property of the cornstalk is improved, nitrogen and phosphorus adsorbed on the stalk are subjected to concentrated treatment and degraded under the action of the microbial agent and microorganisms in soil, and the nitrogen and phosphorus non-point source pollution is efficiently repaired. According to the repairing method, the cornstalk biochar is adopted toperform partitioning interception on soil of an excrement accumulation area and farmlands surrounding the excrement accumulation area, the migration rate of nitrogen and phosphorus in the soil is reduced, and the problem of pollution is solved from the soil source.
Owner:JILIN AGRICULTURAL UNIV

Aluminum-plastic composite bag for food packaging and processing method thereof

The invention discloses an aluminum-plastic composite bag for food packaging and a processing method thereof, and belongs to the technical field of food packaging. The innermost layer of the aluminum-plastic composite bag is an aluminum foil layer, a biaxially oriented polypropylene layer and a heat sealing film layer are sequentially arranged outwards, and the layers are bonded through an adhesive. The aluminum foil layer is 1235 double-zero foil with the thickness of 0.008 to 0.009 mm and is prepared from the following raw materials in parts by weight: 0.086 percent to 0.10 percent of Si, 0.37 percent to 0.43 percent of Fe, 0.005 percent to 0.01 percent of Cu, 0.005 percent to 0.01 percent of Mn, 0.005 percent to 0.01 percent of Mg, 0.005 percent to 0.01 percent of Cr, 0.005 percent to 0.01 percent of Zn, 0.02 percent to 0. 03 percent of V, 0.013 percent to 0.030 percent of Ti, less than or equal to 0.01 percent of other single impurities, less than or equal to 0.05 percent of total impurities and the balance of Al; and the aluminum foil layer is formed by casting, saw milling, soaking, hot rolling, primary cold rolling, primary annealing, secondary cold rolling, foil rolling and finished product annealing. The tensile strength and the elongation of the aluminum foil processed by the method provided by the invention are improved to different degrees, the corrosion resistance is improved, the metal element migration speed of the aluminum-plastic composite bag is low when the aluminum foil is applied to food packaging, and the preservation time of food is prolonged.
Owner:滨州宏展铝业科技有限公司

PID effect resistant solar cell module

The invention relates to a PID effect resistant solar cell module, and the module comprises a module frame, solar cell glass, a cell piece and a back plate, wherein the solar cell glass, the cell piece and the back plate are disposed in an installation groove of the module frame and are sequentially stacked. The interior of the installation groove is provided with sealing glue, and a first packaging layer is disposed between the solar cell glass and the cell piece. A second packaging layer is disposed between the cell piece and the back plate, and the first and second packaging layers are made of the same material. Each packaging layer comprises a blocking layer, a first adhesive layer and a second adhesive layer, wherein the first and second adhesive layers are disposed at two sides of the blocking layer, and the blocking layer is a polyolefin blocking layer made of ethylene-alpha-olefin polymer. Each adhesive layer is made of ethylene-vinyl acetate copolymer, and the cell piece is a back contact solar cell. According to the invention, the blocking layer can block steam from entering the solar cell module through the back plate. The structure can slow down the migration of sodion. The module solves a problem of potential induced attenuation in a wet and hot environment from two aspects, and prolongs the service life.
Owner:梁结平

Antistatic bacteriostatic ultra-high molecular weight polyethylene fiber and preparation method thereof

The invention belongs to the technical field of ultra-high molecular weight polyethylene fibers, and particularly relates to an antistatic antibacterial ultra-high molecular weight polyethylene fiber. The antistatic antibacterial ultra-high molecular weight polyethylene fiber is composed of the following components of, in parts by weight, 100-200 parts of ultra-high molecular weight polyethylene, 1-3 parts of an antioxidant, 3-5 parts of an antistatic agent, 20-50 parts of an antibacterial agent, 1-10 parts of a macromolecular compatilizer, 0.2-1.4 parts of a coupling agent, 4-8 parts of a surfactant, 0.1-1 part of a synergist and 450-1,000 parts of a solvent. According to the antistatic bacteriostatic ultra-high molecular weight polyethylene fiber and the preparation method thereof, a reasonable formula is selected, and all the components have a synergistic effect, so that the overall performance of the UHMWPE fiber is effectively improved, particularly, the UHMWPE fiber has stronger antistatic and antibacterial properties, excellent mechanical properties of the material can be maintained, the stability is high, the service life of the UHMWPE fiber is prolonged, and the use cost is reduced.
Owner:九江中科鑫星新材料有限公司

Display substrate, display device and preparation method of display substrate

The embodiment of the invention relates to the technical field of display, and discloses a display substrate. The display substrate comprises: a first metal layer and a second metal layer which are arranged on a substrate at intervals, a first insulating layer located on the sides, away from the substrate, of the first metal layer and the second metal layer; and a first bonding pad and a second bonding pad which are arranged at an interval, wherein the first bonding pad comprises a first flat part located at one side, far away from the first metal layer, of the first insulating layer, the first flat part is electrically connected with the first metal layer, the second bonding pad comprises a second flat part positioned on one side, far away from the second metal layer, of the first insulating layer, the second flat part is electrically connected with the second metal layer, and the bottom surface of one side of the first flat part facing the first metal layer is higher than the bottomsurface of one side of the second flat part facing the second metal layer. According to the display substrate, the display device and the preparation method of the display substrate provided by the embodiment of the invention, the risk of short circuit between the two bonding pads arranged at intervals is reduced, and the reliability of bonding pads in a binding area is improved.
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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