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

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.

A method for preparing water-based paint for steel structures, relating to a method for preparing paint. The invention uses natural humic acid fulvic acid (FA) to modify graphene (GO) to integrate it, and then integrates the integrated fulvic acid and graphite The water-based epoxy composite anti-corrosion coating is prepared by filling olefin into the water-based epoxy resin. This method successfully solves the problem that graphene is easy to agglomerate in the water-based matrix, and enhances the barrier ability of graphene to corrosion particles; at the same time, fulvic acid has a strong ability to adsorb metal ions and complex with them to form stable compounds. During use, it complexes with ions on the surface of the metal substrate, which can prevent the further occurrence of corrosion reaction, effectively slow down the corrosion and improve the adhesion of the coating. The method overcomes the disadvantages of poor barrier property and short anticorrosion period caused by uneven distribution of anticorrosion fillers in the current waterborne anticorrosion coating, and greatly improves the anticorrosion performance of the waterborne coating.

A method for preparing a silicon dioxide block layer for a group I-III-IV compound solar cell comprises the following steps: preparing an acid catalysis solution, of ortho-silicic acid alkyl ester, that comprises ortho-silicic acid alkyl ester, ethanol, H2O, and acid, and adding NH4OH water solution or adding NH4OH water solution and ethanol after placement, so as to obtain silica sol; coating the silica sol on a medium, and obtaining a gel membrane after aging; heating and drying the aged gel membrane to obtain a silicon dioxide block layer for a group I-III-IV compound solar cell. The method is simple and is suitable for batch production, and the obtained silicon dioxide block layer can better block heteroatoms on a substrate of the solar cell from spreading.

The invention relates to the field of plastic films, and particularly relates to an ultra-low-thickness polyethylene (PE) film and a preparation method thereof. The ultra-low-thickness PE film is composed of an outer layer, a middle layer and an inner layer, wherein a preparation raw material of the middle layer comprises modified polypropylene, and the modified polypropylene is one or more selected from ethylene-vinyl alcohol (EVOH) modified polypropylene, nylon modified polypropylene and polyvinylidene chloride (PVDC) modified polypropylene.

The invention discloses a comprehensive system for taking and delivering blast furnace slag and controlling toxic water vapor pollution in a slag pond, which includes a slag flushing unit, a slag and water separation unit, a slag conveying unit and a water storage unit; the slag flushing unit includes a slag flushing ditch, slag, water The separation unit includes a slag and water separation unit, the slag conveying unit includes a slag delivery unit, and the water storage unit includes a clean water storage unit; the slag flushing ditch is connected to the slag and water separation unit, and the slag and water separation unit is respectively connected to the slag delivery unit and the clean water storage unit, The slag and water separation part transfers the separated slag to the slag conveying part, and the slag and water separation part transfers the separated water to the clean water storage part through the underground ditch; the clean water storage part is connected to the slag flushing ditch through the trench; the clean water storage part is equipped with barriers unit, the barrier unit limits the evaporation of toxic water vapor from the fresh water storage unit to the atmosphere. The invention is novel, practicable, feasible, efficient and energy-saving, and greatly reduces one-time investment and operation cost; it is applicable to both the existing advection process and the bottom filter process.

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.