65results about How to "High cost advantage" patented technology

The invention relates to an active hydraulic damper specially for railway vehicles, comprising a hydraulic cylinder, an electric motor, a hydraulic accumulator, at least a pump and at least a control valve. According to the invention, all components of the active hydraulic damper are arranged at the hydraulic cylinder.

The invention belongs to the preparing field of TiO2 nano-crystal thin film photoelectrode of dye sensitization solar cell, especially relates to a preparing method of non-metal doped dye sensitization TiO2 nano-crystal thin film photoelectrode which is prepared by colloids containing non-metal doped large granule TiO2 nano-crystal and non-metal doped TiO2 nano-crystal granule. The photoelectrode prepared by the invention is prepared by rotary coating the non-metal doped TiO2 colloidal sols and non-metal doped TiO2 power body slurry in order on a conductive substrate; after naturally drying, performing heat-treatment to obtain a nano-crystal thin film photoelectrode with porous structure. On one hand, the non-metal doped TiO2 nano-crystal granule changes the performance of the semiconductor, and is used as almsgiver to provide more carriers to improve the electric conductivity; on the other hand, the non-metal doped TiO2 nano-crystal granule changes the position of TiO2 energy band to improve the photovoltage and the photo absorption efficiencies. The preparing method of the invention is simple and is easy to operate, is suitable for the industrial production preparation of the dye sensitization TiO2 nano-crystal thin film photoelectrode, and also is suitable for the fields of photochemical catalysis electrode and self-cleaning glass and so on.

The invention provides a formula and a preparation method of a cationic polymer. The raw material formula of the cationic polymer comprises the following components in part by weight: water 5-50, acetone 3-25, amine 5-30, aldehyde 5-40, alkaline regulator 3-12 and acidic regulator 5-20. In the method, a water soluble cationic polymer is prepared from aldehyde, acetone and amine by a nucleophilic addition reaction, an aldol condensation reaction and a Michael addition reaction in the presence of acid and alkali catalysts in turn and by a two-step feeding process. The method has the advantages that: the raw material cost is low, the synthesis process is simple and easy to implement; the preparation conditions are mild and safe; and the obtained product has high cation content and has high decolorizing and flocculating effects on anionic dye waste water.

The invention relates to a polyvinylidene fluoride composite film and a preparation method thereof, wherein the polyvinylidene fluoride composite film comprises: an outer PVDF layer, a middle layer and an inner polyolefin layer, wherein the middle layer is acrylic acid Copolymer layer or olefinic copolymer layer, wherein said acrylic acid copolymer comprises ethylene-acrylate EMA, ethylene-acrylic acid EAA, ethylene-ethyl acrylate EEA, ethylene-methacrylic acid copolymer EMAA and ethylene-methyl acrylate One or more of the copolymer EMAC; the olefinic copolymer layer is one or more of the graft-modified ethylene-vinyl acetate EVA and the graft-modified polyolefin elastomer POE. The polyvinylidene fluoride composite film and its preparation method in this invention are adopted, and the solar battery back plate prepared adopts the modified PVDF composite film, which has good bonding performance and good aging resistance effect, greatly reduces the production cost of the fluorine film, and The preparation method is simple and practical, and reduces the difficulty of compounding it with other substrates.

The discharge hole diameter of the nozzle is 0.01 to 25 μm, and the upper limit voltage (10) set to be greater than or equal to the minimum dischargeable voltage (30) as a voltage condition for starting fluid discharge is applied between the nozzle and the substrate by a voltage applying unit the pulse voltage. Before the rising edge of the pulse voltage, set the first lower limit voltage (20a) whose polarity is the same as the upper limit voltage (10) and whose absolute value is smaller than the lowest dischargeable voltage (30), and immediately after the rising edge of the pulse voltage, set A second lower limit voltage (20b) having a polarity opposite to the upper limit voltage (10). Therefore, it is possible to provide an electrostatic attraction type fluid discharge method and device, which can achieve miniaturization of nozzles, discharge of tiny fluids, high accuracy of impact position, and low voltage of driving voltage, while improving discharge start-stop characteristics and driving frequency. And it can control the pulse time of the discharge volume.

The present invention discloses one kind of fire retardant glass fiber reinforced polycarbonate material and its preparation process. The fire retardant glass fiber reinforced polycarbonate material is prepared with polycarbonate 10-80 wt%, polycarbonate/catalyst 8-40 wt%, bromide fire retardant 2-10 wt%, toughening agent 4-10 wt%, antioxidant 0.1-1 wt%, lubricant 0.1-5 wt% and glass fiber 5-30 wt%. The addition of the catalyst makes the stable polycarbonate produce chemically active end hydroxyl radical and end carbonyl radical to enhance the compatibility between polycarbonate and long glass fiber. The product of the fire retardant glass fiber reinforced polycarbonate material has high surface smoothness and no floated glass fiber.

The invention relates to a hard-wire constructed safety protection device of a wind generating set. According to the technical solution, the safety protection device is mainly composed of a first safety relay and a second safety relay, and input, output and reset of the safety protection device completely depend on hard wires to be connected to the two safety relays special for safety loops in a cabin cabinet so that the whole safety protection device is divided into two levels, the function and a control loop of the safety protection device are completely separated from a programmable logic controller (PLC) control system, safety of a unit can be still guaranteed in the condition of dead halt of a PLC, communication interruption or failure to normally operate, and the safety protection device has a fail-safe function; signals from each input contact and each output contact of the safety protection device are simultaneously input into the PLC in a mode of independent switching value digital signals, so that fault points of the unit can be conveniently diagnosed, requirements for PLC factories and types are absent, and the universality is high; only the two safety relays, signal cables and a plurality of auxiliary contacts are added, and the advantage of low costs is achieved.

Silanes containing halogen which is bound to silicon are prepared using microwave energy. Silicon is reacted with mixtures of elements or compounds selected from the group consisting of halogen or halogen and organohalogen compounds or halogen and hydrogen or halogen and halogen hydrogen or organohalogen compounds or organohalogen compounds and hydrogen or organohalogen compounds and halogen hydrogen or halogen hydrogen or fluorosilanes and hydrogen, or fluorosilanes and halogen hydrogen or hydrogen containing chlorosilanes and hydrogen or hydrogen containing chlorosilanes and halogen hydrogen or organohalogensilanes and hydrogen or organohalogensilanes and halogen hydrogen or hydro-carbons and halogen hydro-carbons.

The invention discloses a semitransparent closed type solvent-free epoxy prime coat compound. The component A of the compound is composed of epoxy resin, a bifunctional reactive diluent, crystalline silicon micro-powder and an auxiliary agent, and the component B is composed of a cardanol modified phenolic aldehyde amine curing agent, a coupling agent and a waterproof agent. The closed solvent-free epoxy prime coat is solvent-free, has the characteristics of strong bonding force with a base material, excellent sealing performance on a calcium silicate board and a concrete base surface, high transparency and low total heat value, and has a stronger cost advantage and a better application prospect.

The invention discloses an activity imitation adhesive composition and a preparation method thereof. The novel activity imitation adhesive is prepared from, by weight, 0.5-10% of inorganic nanopowder,15-35% of clay, 2-15% of alkyd resin, 15-45% of silicon- acrylic copolymer and 25-40% of water according to the total weight of the novel activity imitation adhesive. The composition is good in stability and high in self-thickening performance, does not contain a formaldehyde agent, is applied to a pure cotton fabric, and has the advantages that the darkening effect is significant, the fastness is extremely high, and the hand feeling is quite soft, the comprehensive effect of the composition is same with the performance of reactive printing (dyeing), and the effect of activity imitation printing is achieved.

The invention discloses an application of compound grease comprising freshwater fish oil or the freshwater fish oil after fractionation treatment or combination of the above two types of the grease and other grease in a piglet feed. A dosage of the grease in the feed is 0.5-10%. The other grease is coconut oil and modified deep sea fish oil. The modified deep sea fish oil is obtained by ester exchange of the deep sea fish oil and the coconut oil, especially, on the basis of improvement of grease properties. The invention further relates to a fractionation method for fractionation freshwater fish oil and an ester exchange method, so oil which is better in quality and suitable for piglet growth is obtained. The feed grease is capable of reducing generation of a stress syndrome, and has an apparent function for promoting the piglet growth.

The invention relates to the technical field of brake materials, in particular to an alloy material, a lightweight brake drum with the alloy material applied, and a lightweight brake drum preparationmethod. The alloy material is prepared from, by weight, C: 0.23-0.28%, Si: 0.45-0.55%, Mn: 1.05-1.10%, S: no greater than 0.007%, P: no greater than 0.008%, Ni: 1.05-1.20%, Cr: 0.8-0.95%, Mo: 0.5-0.62%, Al: no greater than 0.04%, and the balance Fe. The alloy material has better mechanical properties and thermal fatigue resistance. The annealing and quenching and tempering processes are added in the casting process of the lightweight brake drum, so that the mechanical property of the lightweight brake drum is enhanced. In addition, the wall thickness can be thinned and the structure of the lightweight brake drum can be optimized so as to enhance the braking stability of the lightweight brake drum and increase the driving safety performance.

The invention provides a method for preparing pentamethyldipropylene triamine. The method comprises the following steps: (1) performing a reaction on 3-dimethylaminopropylamine and acrylonitrile so asto form a 3-[[3-(dimethylamino)propyl]amino]propionitrile reaction solution, and performing separation so as to obtain a 3-[[3-((dimethylamino)propyl]amino]propionitrile pure product; (2) performinga hydrogenation reaction on 3-[[3-(dimethylamino)propyl]amino]propionitrile, hydrogen and a solvent under the action of a catalyst so as to obtain a N'-(3-aminopropyl)-N,N-dimethyl-1,3-propylene diamine reaction solution; and (3) performing a methylation reaction on the N'-(3-aminopropyl)-N,N-dimethyl-1,3-propylene diamine reaction solution obtained in the step (2), formaldehyde and hydrogen underthe action of a catalyst so as to obtain pentamethyldipropylene triamine. The method has the advantages of cheap and easily available starting materials, good selectivity to the product and high product yield, and the method is economical and effective, and has industrialization prospects.

The invention provides a method for synthesizing methyl isopropyl ketone through a one-step method. The method comprises the steps of feeding, a first-stage heat preservation reaction process and a second-stage heat preservation reaction process. According to the synthesis method, the reaction yield and the production efficiency are improved, the yield is 70-80% (metered by formaldehyde), operations such as material turnover and separation are reduced, the amount of waste water and waste gas is obviously reduced, and the method is safe and easy to control. Compared with the traditional synthesis method, the method significantly reduces the use amount of equipment and the like, greatly shortens the reaction time and has simple and easily-controlled processes. Various expenses of material consumption, equipment investment, three-waste treatment, personnel and the like are reduced, and the cost advantage is obviously improved. According to the synthesis method disclosed by the invention,the yield of the methyl isopropyl ketone can be 80-85% (metered by formaldehyde) and the purity of the methyl isopropyl ketone is 99.5% or above by virtue of a preferable technical scheme.

The invention provides an oil outlet massage cream. The oil outlet massage cream provided by the invention is composed of the following components in percentage by weight: 25.0-40.0% of diethylhexyl carbonate, 25.0-40.0% of isohexyl palmitate, 2.0-10.0% of glycerinum, 3.0-5.0% of cyclopentasiloxane, 0.8-1.2% of cetearyl glucoside, 0.05% of xanthan gum, 0.1% of carbomer, 0.1% of triethanolamine, 0.1% of allantoin, 0.05% of sodium hyaluronate, 0.5% of caprylyl glycol, 0.4% of phenoxyethanol, 0.05% of essence, and the balance of deionized water. The oil outlet massage cream provided by the invention is good in massage effect and oil outlet effect and high in moisturizing degree.

The invention discloses an ingot casting furnace capable of improving average conversion efficiency of a silicon ingot. The ingot casting furnace comprises a furnace body and a crucible, wherein the crucible is arranged in the furnace body; a graphite vertical column is vertically arranged at the bottom part of the interior of the furnace body; a heat exchange platform is horizontally arranged at the top part of the graphite vertical column; the crucible is placed on the heat exchange platform; a graphite protective plate layer, a heater layer and a heat insulation cover layer are sequentially arranged between the periphery of the furnace body and the wall surface of the interior of the furnace body; the cross section of the crucible is in an octagon shape; the octagon-shaped crucible comprises four crucible walls and four crucible chamfer walls; each crucible chamfer wall is positioned between the two adjacent crucible walls; the cross sections of the graphite protective plate layer and the heater layer have the same shape with the cross section of the crucible; the graphite protective plate layer and the heater layer are respectively formed with chamfer layer surfaces corresponding to the crucible chamfer walls. The ingot casting furnace has the advantages that the four corners of the existing quadrilateral heat field are chamfered, the size of the heat field is increased, the quadrilateral heat field is upgraded into the octagon-shaped heat field, the production of corner ingots is avoided, and the average conversion efficiency of the whole silicon ingot is improved.

There is provided a gas turbine combustor which includes a burner component which is molded by 3D additive manufacturing and is optimized in material strength per part. The burner component includes a first part which is used within a first temperature range and/or a first stress range and a second part which is used within a second temperature range which is lower than the first temperature range and/or a second stress range which is lower than the first stress range, and a lamination speed at which a metal material is laminated on the first part by the 3D additive manufacturing is lower than a lamination speed at which the metal material is laminated on the second part.

The invention discloses a fireproof and thermal insulation building material. The fireproof thermal insulation material comprises the following materials in parts by weight: 20-30 parts of expanded perlite, 9-15 parts of silicon dioxide, 15-20 parts of clay, and 3-10 parts of dolomite powder 5-18 parts of rubber, 7-18 parts of plant fiber powder, 4-10 parts of aluminum silicate fiber cotton, 10-17 parts of flame retardant, 2-15 parts of color masterbatch, 2-13 parts of auxiliary raw materials. The invention provides a fire-proof and heat-preserving building material, which has good heat-preserving and flame-retardant effects, improves the fire-proof performance of the building material, and also realizes the energy storage and temperature-regulating function of the material to prevent the loss of indoor heat energy; the heat-insulating material uses swelling Perlite is the main raw material, which makes the insulation material have the characteristics of light apparent density, low thermal conductivity, good chemical stability, non-toxic and tasteless. The flame retardant used in the building materials is tetrabromobisphenol A, which is one of the flame retardant products with the most scientific tests and the highest cost advantage in the market.