40results about How to "Improve barrier efficiency" patented technology

Provided are a heat insulation sheet, a hybrid heat insulation sheet including the heat insulation sheet, and a heat insulation panel having the hybrid heat insulation sheet. The heat insulation sheet includes: an outer shell with a hollow portion therein; and a phase change material (PCM) that is positioned in the hollow portion and that absorbs heat transferred from the outer shell.

The present disclosure includes a substrate, a moisture-transmission delay part, and a protective layer. The substrate includes a display area, and a non-display area disposed outside the display area. The moisture-transmission delay part includes a trench which is formed to surround the display area and which has a cross section in which a lower portion has a width greater than a width of an upper portion. The protective layer covers the display area and the non-display area in which the moisture-transmission delay part is formed.

The invention discloses a method for preparing water-based paint of a steel structure and relates to a paint preparation method. The method disclosed by the invention comprises the following steps: integrating natural fulvic acid (FA) and graphene oxide (GO), and filling the integrated fulvic acid and graphene into a water-based epoxy resin, thereby obtaining the water-based epoxy composite anticorrosive paint. According to the method, the problem that the graphene is easy to aggregate in a water-based matrix is successfully solved, and the blocking ability of the graphene on corrosive particles is enhanced; and meanwhile, the fulvic acid has the ability of strongly adsorbing metal ions and combining with the metal ions to form stable compounds, the corrosion reaction can be further blocked by complexing the fulvic acid and ions on the surface of the metal matrix in the application process, corrosion is effectively relieved, and the adhesion force of the coating is improved. Accordingto the method, the defects ubiquitous in the conventional water-based anticorrosive coating that poor barrier property and short anticorrosion cycle are caused by non-uniform distribution of the anticorrosive filler in the matrix can be overcome, and the corrosion resistance of the water-based coating is greatly improved.

The invention relates to the technical field of a solar cell and provides a preparation method for a silicon dioxide block layer used for an I-III-IV compound solar cell. The preparation method comprises the following steps that: acid catalysis solution of ortho-silicic acid alkyl ester is prepared; the acid catalysis solution of the ortho-silicic acid alkyl ester rests for 0.5-6h, and then NH4OH solution is added into the acid catalysis solution, so as to obtain silica sol; the silica sol is coated on a medium in an isopropanol atmosphere; the medium after being coated with the silica sol is aged continuously in the isopropanol atmosphere for 5-75min and then is soaked into isopropanol solution to be aged, so as to obtain an aged gel membrane; and the aged gel membrane is heated and dried, the heating rate is 10-180 DEG C/s, the aged gel membrane is kept for 10-75min after being heated to the temperature of 150-500 DEG C, so as to obtain the silicon dioxide block layer used for the I-III-IV compound solar cell. The preparation method is simple, thereby being suitable for batch production; moreover, the prepared silicon dioxide block layer used for the I-III-IV compound solar cell can effectively improve the efficiency of the solar cell.

The invention discloses a low-temperature-rise automotive interior material, which comprises a reflective base material layer and a reflective surface layer, wherein the reflective base material layeris doped with an inorganic white pigment, the reflective surface layer is doped with hollow ceramic microspheres and infrared reflective particles, and the infrared reflective particles are formed bycoating inorganic color pigment crystal nucleuses with an organic pigment. The low-temperature-rise automotive interior material can have rich colors, and is energy-saving and environment-friendly.

The invention belongs to the technical field of polytetrafluoroethylene films, and particularly relates to a PTFE nano mask film and a preparation method thereof. The PTFE nano mask film is prepared from the following raw materials in parts by mass: 100 parts of PTFE dispersion resin, 25 to 40 parts of pore-forming agent, 0.5 to 0.8 part of an antibacterial agent, 0.08 to 0.1 part of a dispersingagent, and 0.5 to 0.8 part of an antistatic agent. The PTFE nano mask film has the advantages that the pore diameter is 100 to 200 nm, the porosity is 90 to 95 percent, the pure physical interceptionis realized, the filtering pressure difference is lower than 6 to 7mmH2O, the change due to the temperature is avoided, and the fear of a humid environment is avoided; existing fused spray adopts an electrostatic adsorption mechanism, fibers are thick, holes are large, only static electricity is used as a filtering mechanism, and once the static electricity fails due to temperature or humidity, ahuman body cannot be protected.

The invention discloses a reflective film protective layer with acid and alkali resistance for a photovoltaic module and a manufacturing method thereof, belongs to the field of solar power generation,and relates to a functional protective layer of a reflective film used on a photovoltaic welding tape. The functional protective layer having acid and alkali resistance and an ultraviolet shielding effect, which is applied to the microstructure surface of the reflective film, resists acid and alkali corrosion while shielding and absorbing ultraviolet to a certain extent, thereby prolonging the service life of the reflective film, reducing light waste and improving the photovoltaic power generation efficiency. The reflective film protective layer comprises the adhesive layer, the base layer, the microstructure layer, the reflective layer and the functional acid-alkali protective layer, wherein the adhesive layer is arranged below the base layer, the reflective film protective layer with acid and alkali resistance for a photovoltaic module is bonded to the photovoltaic module through the adhesive layer, the microstructure layer is arranged on the base layer, the reflective layer is arranged on the microstructure layer, and the functional acid-alkali protective layer is arranged on the reflective layer.

The invention discloses a metal ion doped copper sulfide nanosheet with a near-infrared shielding function and a preparation method of the metal ion doped copper sulfide nanosheet. The preparation method comprises the following steps: firstly, adding hexadecylamine into an organic solvent at room temperature, and stirring and dissolving under an ultrasonic condition to obtain a solution A; addingcopper nitrate and doped metal ion salt into the solution A, performing ultrasonic dispersion to obtain turbid liquid B, and sealing the turbid liquid B; heating and stirring the sealed turbid liquidB until the turbid liquid B is completely dissolved to obtain a solution C; adding carbon disulfide into the solution C, and carrying out solvothermal reaction at 100-140 DEG C for 6-24 hours; and cooling, washing and drying the reaction product to obtain the metal ion doped copper sulfide nanosheet. The obtained metal ion doped copper sulfide nanosheet is small in particle size, high in near-infrared absorption, high in selective light transmission and easy to control in reaction, the dispersion stability of the product is good, and the metal ion doped copper sulfide nanosheet has potential application value in the aspect of transparent heat insulation coatings.

The invention discloses an oil-pollution-resistant heat-sealing high-barrier thin film. The structure of the oil-pollution-resistant heat-sealing high-barrier thin film is PA1/T1/PP/T2/PA2/C/PA3/T3/PE1/PE2/PE3. The PE3 is an outer layer in contact with the outside during packaging. The PA1 is an inner layer in contact with a packaged object during packaging. The PP material is an auxiliary layer,and the C is a gas barrier layer. The T1, T2 and T3 are adhesive layers, the PA1, PA2 and PA3 are oil-pollution-resistant layers, and the PE1, PE2 and PE3 are heat-sealing high barrier layers. The auxiliary layer, the gas barrier layer, the adhesive layers and the oil-pollution-resistant layers are separately subjected to pretreatment to obtain pre-crystalline materials, and the pre-crystalline materials are subjected to transverse and longitudinal stretching, corona, static electricity removal, curing and winding treatment by a twin-screw extruder to obtain the high-barrier thin film. In a word, according to the process structure of the oil-pollution-resistant heat-sealing high-barrier thin film, the adhered oil pollution can be cleaned away, the influence of high temperature on the high-barrier thin film is prevented, and good bending strength is achieved; and the high-barrier thin film is subjected to sealing treatment, the structure is reasonable, and the recovery is facilitated.

The invention discloses a blast furnace slag taking and conveying and slag pool toxic water vapor pollution treatment comprehensive system which comprises a slag flushing unit, a slag and water separating unit, a slag conveying unit and a water storing unit, wherein the slag flushing unit comprises a slag flushing trench; the slag and water separating unit comprises a slag and water separating part; the slag conveying unit comprises a furnace slag conveying part; the water storing unit comprises a clear water storing part; the slag flushing trench is connected with the slag and water separating part; the slag and water separating part is connected with the furnace slag conveying part and the clear water storing part; the slag and water separating part transfers the separated furnace slag to the furnace slag conveying part and transfers the separated water flow to the clear water storing part via a blind ditch; the clear water storing part is connected with the slag flushing trench viathe trench; the clear water storing part is provided with an obstructing unit; and the obstructing unit prevents toxic water vapor in the clear water storing part from evaporating to the atmosphere environment. The system is novel, practical, feasible, efficient and energy-saving, greatly reduces the one-time investment and operating cost, and is applicable to the existing streaming type technology and the bottom filtering type technology.

The invention discloses a high-efficiency and low-resistance filter membrane and application thereof in mask fabric. The high-efficiency and low-resistance filter performance of the mask fabric is realized through a method of combining an electrostatic spinning nanofiber microporous composite membrane with non-woven fabric. The method specifically comprises the following steps: 1, preparing a non-woven fabric surface layer; 2, preparing a composite filter membrane inner layer; and 3, fitting a mask. According to the mask fabric, the BFE filtering efficiency of the mask fabric can reach 95% orabove, the PFE filtering efficiency can reach 95% or above, the respiratory resistance is 104-119 Pa, and the mask fabric has the advantages of being lasting in filtering, light, thin and breathable.

The invention discloses a rapid-flushing type integrated elbow floor drain, which comprises a diversion block, wherein two liquid passages, which are image-symmetrical, are formed in the diversion block; liquid inlets of the liquid passages extend to the upper surface of the diversion block and liquid outlets of the liquid passages are connected to the bottom of the diversion block; a stream guidance pipe is arranged between the liquid outlets of the two liquid passages; two ends of the stream guidance pipe are butted with the liquid outlets of the two liquid passages; the side faces, away from the sidewalls of the diversion block, of the stream guidance pipe are provided with discharging ports; the liquid passages are three-dimensional pipes provided with horizontal bends and vertical bends; the liquid passages are composed of liquid inlet pipes, blocking elbows, transition pipes and blocking liquid outlet pipes which are sequentially connected; and the liquid inlet pipes and the transition pipes are mutually staggered in a vertical plane. Through opposite flushing caused by a floating wall flow generated on the stream guidance pipe, a cleaning step can be greatly simplified; with the design of a square opening, the loss rate of a water flow is reduced; and the elbow floor drain not only guarantees a drainage efficiency but also guarantees a flushing function.

The invention discloses a novel nanometer surgical mask filtering material and a manufacturing method thereof. The novel nanometer surgical mask filtering material comprises an outer layer, a middle layer and an inner layer, wherein the outer layer is a waterproof layer, the middle layer is a filtering layer, the inner layer is a moisture absorbing layer, and the filtering layer is formed by a nanometer film composite material. The novel nanometer surgical mask filtering material and the manufacturing method thereof have the advantages that the pore diameter of the middle of the filtering layer is smaller, the blocking efficiency is higher, the service life is long, and wearing is more comfortable.