127results about How to "Strong moisture resistance" patented technology

A high-effective catalyst used for removing indoor formaldehyde at normal temperature includes a carrier, a noble active component, and an additive. The carrier is a mesoporous oxide including at least one of Al2O3, TiO2, SiO2, cerium oxide, cobalt oxide and manganese oxide; the active component includes a less amount of at least one of noble metals Pd, Pt, Au and Ag; the additive is at least one of Na, K, Fe, Co, Ce and Ni. The catalyst can completely convert the formaldehyde into CO2 and H2O at normal temperature under relative humidity of 50-90%. The catalyst has high catalytic-oxidizing activity and strong anti-moisture capability and is suitable for removal of the formaldehyde in a sealed or a semi-sealed space.

The invention relates to a supported catalyst for removing ozone and a preparation method thereof, and belongs to the field of catalysis and environmental protection. The supported catalyst is characterized in that a honeycomb ceramic carrier or a porous foam metal carrier or an active carbon fiber cloth carrier is adopted, a manganese-iron composite oxide is adopted as a main active component, and silver is adopted as an auxiliary component. The preparation method comprises the following main steps: adopting an oxidation reduction-reflux method to prepare MnO2-Fe2O3 composite oxide powder, adding a certain percentage of deionized water and silica gel, beating to obtain a slurry, placing the catalyst carrier into the slurry to immerse, taking the carrier, drying, baking, placing the catalyst carrier in a soluble silver solution to immerse, taking the carrier, drying, baking, placing the catalyst carrier in hydrogen to heat, and cooling to a room temperature. The catalysts prepared by the method provides high catalysis activity and stability for decomposition of ozone in indoor air, wherein addition inputs of light, electricity, heat and other energy sources are not required, and the ozone can be stably decomposed into oxygen under conditions of a room temperature, normal humidity and large air flow.

The invention discloses an efficient denitrified integral catalyst of a stationary source, which relates to a control technique of catalytic selective reducing nitric oxides (NOx) in the fields of catalyzation, environmental protection and energy saving and is characterized in that honeycomb cordierite ceramics are used as matrixes; gamma-Al2O3 is used as a first carrier; anatase crystal TiO2 is used as a second carrier; and a manganese oxide molecular sieve (V-OMS) of framework vanadium ions (V<5+>) is used as an active component, wherein contents of the gamma-Al2O3 and the TiO2 are respectively 5wt% to 15wt% and 5wt% to 15wt%; the content of the V-OMS is 5wt% to 20wt%; and the molar ratio of V to Mn is between 0 and 0.20. On a window with wide temperature of 80 DEG C to 450 DEG C, the conversion ratio of the NOx of the integral catalyst of the invention by using NH3 as a reducing agent is not less than 85%; and the selectivity of N2 is larger than 90%. The integral catalyst is suitable for controlling the discharge of nitrogen oxides of the stationary source (boiler).

The invention discloses a monolithic catalyst for simultaneously removing formaldehyde, carbon monoxide and ozone at room temperature, and relates to the fields of catalysis and environmental protection. The monolithic catalyst is characterized in that: honeycomb ceramics or porous foam metal is taken as a carrier; doped alpha-MnO2 which is supported first is taken as a first active ingredient; and platinum-gold with coexistence of an oxidation state and a metallic state, which is supported later, is taken as a second active ingredient. The doped alpha-MnO2 is characterized in that: silver in a metallic state and an oxidation state simultaneously exists in pores of which the size is about 0.46*0.46nm<2>, and titanium ions (Ti4+) replace partial lattices of the alpha-MnO2; and the Ag and Ti respectively account for 0 to 20 weight percent and 0 to 50 weight percent of the alpha-MnO2. The weight ratio of a platinum-gold alloy to the doped alpha-MnO2 is 0 to 10 percent, wherein the platinum accounts for 0 to 100 weight percent of the platinum-gold alloy. The monolithic catalyst can efficiently and stably remove the formaldehyde, carbon monoxide and ozone pollutants in air simultaneously in actual environment at normal temperature and normal pressure.

The invention relates to a high-efficient denitration monolithic catalyst for titanium oxide carried vanadium-molybdenum composite oxide and a preparation method thereof, and relates to a technology for controlling selective catalytic reduction of nitrogen oxide (NOx) in the fields of catalysis, environmental protection and energy saving. The preparation method provided by the invention is characterized in that a honeycomb cordierite ceramic material is used as a matrix, gamma-Al2O3 is used as a first carrier, Anatase crystalline TiO2 is used as a second carrier, and active components containing V2O5-MoO3 composite oxide are used as the active components, wherein the contents of gamma-Al2O3 and TiO2 are respectively 5-15 wt% and 5-10 wt%, the content of V205-MoO3 is 1-10 wt%, and the mol ratio of V/Mo ranges from 0 to 0.20. The monolithic catalyst provided by the invention has a broad temperature window of 80-450 DEG C; with NH3 as a reducing agent, the transformation rate of NOx is not less than 85%; and the selectivity on N2 is greater than 90%.

The invention discloses PVC/PE/PVCD solid medicine using composite hard sheet manufacturing technology. It includes the following steps: unreeling for PVC basis material; corona treatment for its surface; coating adhesive; drying; unreeling for PE film; compositing the PVE basis material and PE film; solidifying; dying; corona treatment for the PE film surface; coating adhesive; coating PVCD glue; drying to form PVCD film; repeating coating the PVCD glue on the PE film; drying; rolling, solidifying to form PVCD film again; patting cut and detecting.

The invention relates to a multi-layer voltage-sensitive resistance and relative production, wherein it has the types as internal electrode and end electrode inside the insulated layer; the internal electrode and end electrode are connected directly; and the end electrode and the base board are directly connected; and the production comprises: preparing slurry, laminating layers, slicing, discharging adhesive, sintering, surface treating the insulated slurry of base board, producing two end electrodes and electrically plating. The invention insulated treats the surface of multi-layer sheet voltage-sensitive resistance without end electrodes, without water adsorption, and it plates nickel and tin on the surface of end electrode, to improve the welding property and the welding reliability, with lower cost and batch production.

The invention provides electro-slag re-melting slag, consisting of the following components in percentage by weight: 20%-25% of fluorite, 35%-40% of bauxite, 30%-35% of high-calcium lime, 3%-8% of fused magnesite and 5%-10% of silica. A preparation method of the electro-slag re-melting slag comprises the following process steps of checking, finely grinding, proportioning, balling, drying, electrically smelting, deslagging, cooling, crashing, checking, packaging and storing. The electro-slag re-melting slag provided by the invention can be used for reducing the introduction of hydrogen, oxygen and nitrogen, and has the advantages of ensuring the surface smoothness of cast ingots and low power consumption.

The invention provides a thermoplastic modified polyethylene material suitable for electric insulators, wherein the thermoplastic modified polyethylene material is prepared from the following raw materials by weight: 50-65% of polyethylene, 2-6% of a toughener, 15-20% of an inorganic filler, 15-20% of a bromine-based flame retardant, 1.5-5% of a synergistic flame retardant, 0.6-1.4% of a stabilizer, 0.5-1% of a coupling agent, and 0.2-1% of a lubricant, the raw materials are stirred and mixed in a high-speed mixer, and the mixture is extruded and granulated by a twin-screw extruder to obtain the product. According to the present invention, the thermoplastic modified polyethylene material has advantages of excellent comprehensive performance, stable flame retardancy, low density and smoothsurface property, is the thermoplastic material, can be recovered and reused, and meets the environmental protection trends; and with the application of the thermoplastic modified polyethylene material in the preparation of insulator product, the process is simple, the production cycle is short, the production environment is free of dust, and the product can be recovered and reused after the usedlife is achieved and the product is rejected so as not to cause white pollution.

The invention relates to a vacuum evaporating coating machine of films for aluminum thickened metalized capacitors. An evaporation source comprises a first aluminum crucible and a second aluminum crucible, wherein the first aluminum crucible is installed on one side wall of a vacuum evaporation coating chamber for synchronously performing an aluminum film evaporation coating step, and the second aluminum crucible is used for an aluminum reinforced layer evaporation coating step. After aluminum film evaporation coating, an aluminum reinforced layer can be quickly coated by vaporization on the surface coated with an aluminum film by vaporization; the two evaporation steps are synchronously performed; and the thickening of the reserved side of the aluminum metalized capacitor is realized. The machine has the greatest advantages that a natural oxide layer is formed, the capability of moisture resistance is high, the storage cycle is long, the natural repair performance is good, metalized films can produce Al2O3 after natural repair, and the parameters of the capacitor arrre not affected. Simultaneously, the machine improves the quality of the whole coating film, and simultaneously improves the evaporation efficiency, and solves the problem that the traditional vacuum evaporating coating machine at home and abroad can not prepare films of aluminum thickened metalized capacitors. Simultaneously, the vacuum evaporating coating machine of films for aluminum thickened metalized capacitors can also be used for producing films for pure aluminum metalized capacitors.

The invention discloses a processing method of a high-moisture-resistance metallized polypropylene film capacitor, and relates to the technical field of capacitors. The method comprises the followingsteps: S1, film coating: carrying out low-temperature plasma corona treatment on the surface of a polypropylene film so that a dangling bond can be formed on the surface of the polypropylene film, andthen plating a metal coating on the surface of the polypropylene film; S2, metal spraying: performing metal spraying treatment on the core (a metal spraying material is a zinc-aluminum wire), and coating the surface of the core with an aluminum foil adhesive tape after metal spraying is completed; S3, energizing: automatically testing the core on an energizing machine; S4, welding: automaticallyfeeding the core to a welding machine through a vibrating disc, and then performing the welding operation after the distance between the welding joints is adjusted to be equal to the pin distance of the capacitor. The invention has the beneficial effects that the capacitor manufactured through the method can meet the requirements of the service life test of 85 DEG C, 85% of RH, 1-time of rated voltage and 1000 hours, and the capacity attenuation of the capacitor is smaller than 10%.

The invention relates to a titanium oxide-supported vanadium-tungsten composite oxide high-efficiency denitration integral catalyst and a preparation method thereof, and relates to a control technology for catalytic selective reduction of nitrogen oxides (NOx) in the fields of catalysis, environmental protection and energy saving. It is characterized in that the honeycomb cordierite ceramic material is used as the matrix, γ-Al2O3 is used as the first carrier, the Anatase crystal TiO2 is used as the second carrier, and the active components include V2O5-WO3 composite oxides as the active components. The contents of γ-Al2O3 and TiO2 are respectively 5-15wt% and 5-10wt%, V2O5-WO3 is 1-10wt%, and the V/W molar ratio is between 0-0.20. The monolithic catalyst of the present invention has a wide temperature window of 80-450 DEG C, the conversion rate of NOx by using NH3 as a reducing agent is not less than 85%, and the selectivity to N2 is more than 90%.

The invention discloses an adhesive-film-winding automatic packaging machine for a floor group. The adhesive-film-winding automatic packaging machine comprises seven parts, that is, a vertical frame (1), rotary assemblies for the floor group, a clamping and location assembly for the floor group, an adhesive film cutting assembly, an adhesive film barrel reciprocating motion assembly, a floor conveying system and a control system PLC, wherein the rotary assemblies for the floor group are fixed to the two sides of the vertical frame (1); the clamping and location assembly for the floor group is located around the floor group to be packaged; the adhesive film cutting assembly is located between an adhesive film barrel (19) and the floor group; and the adhesive film barrel reciprocating motion assembly is located at the front side of the vertical frame (1). The invention discloses special equipment capable of automatically packaging the floor group composed of six floors. The equipment has the advantages of being high in automation degree, high in production efficiency, low in production cost, and capable of lowering the labour intensity.

The invention provides a method for preparing a waterproof cone of a loudspeaker, and relates to the technical field of loudspeakers. The method comprises the following steps: first, preparing pulp suspension: the pulp suspension comprises the following components in weight ratios: 60%-70% of plant fibers, 3%-5% of dye, 1%-3% of melamine resin, 10%-15% of barium sulfate, 6%-10% of aluminum sulfate and 1%-3% of rosin; second, picking up the pulp, and carrying out hot press molding, wherein the pulp suspension flows into a 50-mesh or 100-mesh copper wire gauze to be adsorbed on the copper wire gauze, picking up the pulp for forming, and carrying out the hot press molding by using a paper machine; and third, gluing and punching; spray coating an acrylic polyester waterproof agent on the surface of a cone formed by the hot press molding, drying the cone and punching the cone to form the same. The method provided by the invention has the beneficial effects that by adopting the method for preparing the waterproof cone of the loudspeaker, the prepared cone is good in toughness, strong in waterproof ability and low in preparation cost.

The invention relates to fluid active lime powder, in particular to fluid active lime powder which has low surface energy, is used for desulfurizing molten steel and iron and comprises lime powder anda modifier in a weight ratio ranging 100:0.5 to 100:0.7. The modifier comprises the following components: a chromic compound, an ethanol solution, soap powder, alkali liquor, a vector and organic silicon oil. The production method of the fluid active lime powder with low surface energy comprises the following steps: sequentially selecting limestone; kilning; calcining; crushing; proportionally mixing the limestone in the modifier; and finally, grinding to obtain the active lime powder. The active lime powder has short calcination time, high activity, strong water resistance and higher fluidity, is suitable for desulphurization by an injection method and can improve the steel-iron production efficiency.

The invention provides a polyvinyl chloride (PVC)-based wood plastic composite and a preparation method thereof. The PVC-based wood plastic composite is mixed by the following raw materials by weight percent: 32-51% of PVC, 1-3% of stabilizer, 1-2% of processing additive, 2-3% of impact modifier, 2-3% of lubricant and 40-60% of wood flour. The preparation method comprises the following steps: mixing the raw materials according to the formula ratio, using a conical twin-screw for mixing, cooling and solidifying, and cutting to obtain the finished product. Compared with the common wood plastic material, the prepared molding-grade PVC-based wood plastic composite has the advantages of high wood flour filling volume, good high temperature fluidity and the like and can be directly used for molding production; and the formed wood plastic product has good comprehensive physical-mechanical performance and appearance, strong wood feeling and obvious cost advantage.

The invention discloses a monolithic catalyst for removing carbon monoxide at room temperature, and relates to the field of catalysis and environmental protection. The monolithic catalyst is characterized in that: honeycomb ceramic or a porous foam metal is taken as a carrier, doped cryptomelane MnO2 which is loaded first is taken as a first active ingredient, and platinum-gold with coexisting oxidation state and metallic state which is loaded later is taken as a second active ingredient. The doped cryptomelane MnO2 is characterized in that: metallic state silver and oxidation state silver coexist in ducts with the dimensions of about 0.46*0.46nm<2>, and titanium ions (Ti<4+>) substitute partial lattice sites of the cryptomelane MnO2; and Ag and Ti account for 0 to 20 weight percent and 0 to 50 weight percent of alpha-MnO2 respectively. A platinum-gold alloy accounts for 0 to 10 weight percent of the doped cryptomelane MnO2, wherein platinum accounts for 0 to 100 weight percent of the platinum-gold alloy. The monolithic catalyst can efficiently and steadily remove carbon monoxide pollutants in the air in the normal-temperature normal-pressure real environment.

The invention discloses a controller shell for an electric vehicle. A main body of the controller shell is an aluminum shell; two ends of the aluminum shell are respectively sealed by a front baffle plate and a back baffle plate; a blower is arranged on the front baffle plate or the back baffle plate; a circuit board is fixedly connected to an inner wall of the aluminum shell; heat radiation air channels are formed on a side wall of the aluminum shell along the length direction of the aluminum shell; the inner side surface of the side wall, which is provided with the heat radiation air channels, of the aluminum shell is connected with heat radiation aluminum strips; a wind current turning structural member is arranged between the back baffle plate and the aluminum shell; one side of the wind current turning structural member, is provided with the blower, and the other side of the wind current turning structural member is provided with air outlet holes; and the air outlet holes are opposite to the heat radiation air channels. The external cold air is absorbed by the blower, and the heat radiation aluminum strips which are internally embedded in the shell are subjected to forced cooling heat radiation through the heat radiation air channels on the inner side of the shell, so that the problems of incapability of dissipating heat from the shell in time due to temperature rise in a natural heat radiation way and incapability of isolating internal and external environments in the conventional air cooling heat radiation way are solved, and good waterproof and moistureproof functions are realized.

The invention discloses a salt mist-resistant moisture-resistant catalyst for removing carbon monoxide at low temperature, in particular a catalyst and a preparation method thereof, and belongs to the technical field of chemical engineering. The catalyst is characterized by consisting of a carrier and active metals, wherein the carrier is a mixture of alumina, manganese oxide, cerium zirconium composite oxide of CexZr1-xO2 and a small amount of adhesive; a mass ratio of the alumina to the manganese oxide is (1-5):1; the cerium zirconium composite oxide is 1 to 10 mass percent of the carrier, and x is more than or equal to 0.5 and less than or equal to 1; the adhesive is 0.5 to 5 mass percent of the carrier; and the active metals are Pt and Pb, wherein the Pt is 0.1 to 1 mass percent of the carrier, and the Pd is 0.3 to 2 mass percent of the carrier. The invention has the advantage that: the prepared catalyst is low in cost, high in low temperature catalytic activity, high salt mist resistance and moisture resistance, and high stability.

The invention relates to the field of architectural decoration material and its post-contour machining technology, concretely a method for surface directly coating beaverboard of middle density. The invention is indicated constructing continuous coating lines of priming lacquer, emulation grain and top-coat, taking the beaverboard of middle density as basic materials on the continuous coating lines, and continuously coating the basic materials to form into coating of the priming lacquer, emulation grain and top-coat. With employing this method, the aforementioned coatings can dry and form film in 0.5-2 seconds, the coating speed is quickly, and the quality is excellent without environment pollution.

The invention relates to a barley green prescription and a preparation process thereof. The barley green prescription comprises the raw materials by weight percentage as follows: 82-95 percent of barley green powder and 5-18 percent of extract of edible cactus; wherein, the barley green powder is the extract of tender leaves of the fresh barley; and the extract of the edible cactus is the extract of opuntia milpa alta, the extracting proportion of the extract of opuntia milpa alta and the fresh cactus by weight ratio is 1:20 to 1:40. The preparation process comprises the following steps: the barley green powder and the extract of the edible cactus are weighted according to the weight ratio, then the two extracts are well mixed and stirred by adopting the method of equal quantity increasing and infiltration stirring; the obtained mixture is granulated and then placed in an oven to be dried for 3.5-5 hours and the moisture content is controlled in 3-4 percent; then the dried mixture passes through the steps of inspecting, screening, tabletting, sterilizing, thus the product is obtained after encapsulation. The barley green prescription of the invention has the advantages of no chemical composition, obviously improved oxidation resistance and stability, more complete and richer nutrition and inhibition of reproduction of bacteria.

The invention relates to a moisture-proof anti-cracking detachable floor. The side surface of the floor is at least provided with a horizontal groove and a tenon mouth; footings are arranged on the edge of the bottom surface of the floor; ventilating grooves are formed among the footings; and the bottom surface of the floor is at least provided with a groove. The floor has the advantages that: a ventilating space is formed among the bottom surface, the footings and the ventilating grooves of the floor; moisture under the floor can be dispersed through the ventilating space; and the floor has strong moisture resistance, can effectively resist the permeation of the moisture to the floor, and improves the protecting capability of the floor. The horizontal groove on the side surface of the floor and the round groove structure on the bottom surface of the floor weaken the tensile stress of the floor surface greatly, and reduce the possibility of floor cracking greatly. When the floor is paved, keels and iron nails are not required; the paved floor can be detached, and can be reused. The raw materials have higher utilization ratio. The floor has the advantages of simple structure, firmness, durability and beautiful appearance.

The invention discloses a high pressure resistant load leading-out end structure and a sealing-in craft based on metal ceramic. The high pressure resistant load leading-out end structure comprises insulators, leading-out rods and a base plate (7), wherein the insulators comprise four coil insulators (5) and at least four load insulators (6), the leading-out rods comprise at least four load leading-out rods (3) and four coil leading-out rods (4), the insulators are made of ceramic materials, the coil leading-out rods (4) are symmetrically distributed in the center of the base plate (7), the at least four load leading-out rods (3) are symmetrically distributed on two sides of an X axis of the base plate (7), the leading-out rods are arranged on the base plate (7) in a sleeved and sealed mode through the insulators, two ends of each leading-out rod are respectively higher than two ends of each insulator, and the two ends of each insulator are higher than the base plate (7).

An electroluminescent (EL) phosphor is described wherein each individual phosphor particle is encapsulated in an inorganic coating, preferably aluminum oxyhydroxide. The encapsulated phosphor shows an extreme insensitivity to atmospheric moisture and suffers only minor loss of initial brightness in lamps. The method of applying the coating is a hybrid process, which involves EL phosphor particles first being coated with a thin inorganic film using an atomic layer deposition (ALD) method in a fluidized bed wherein the precursors are introduced sequentially in repeated cycles, subsequently followed by an additional coating layer applied by a chemical vapor deposition (CVD) method in which the precursors are introduced simultaneously.

The present invention relates to humidity-proof heat sealer compositions having low specific gravity, which comprise a polyvinyl chloride resin, a filler, a moisture absorbent, a plasticizer, an adhesion promoter, an additive, and so forth, for use in automotive steel sheet joints or outside panel joints. When compared with conventional sealer compositions, the present compositions provide improved humidity resistance, as well as improved fuel efficiency.