108results about How to "Conditions are easy to achieve" patented technology

The invention relates to a method for producing environment-friendly rubber filling oil, which comprises the following steps: performing extraction through back flow and sufficient contact in an extraction tower by using the specific gravity difference of raw oil and a solvent; dissolving polycyclic aromatic hydrocarbon in the raw oil into the solvent, and depositing the polycyclic aromatic hydrocarbon to the bottom area of the tower automatically; raising the raw oil after the extraction to the top of the tower automatically; performing solvent recovery through a steam stripping process; and removing the carried solvent to obtain the environment-friendly rubber filling oil. The method has the advantages that the environmental protection of an oil product meets European Union requirements, the oil product has good compatibility with rubber, and the adopted solvent recovery process has the advantages of high solvent recovery rate, easily achieved conditions and the like.

The invention discloses a magneto-calorific system, comprising a heat energy collecting device used for collecting heat energy, a heat energy transmission device used for transmitting heat energy, a magneto-calorific machine set used for converting heat energy into mechanical energy and outputting the mechanical energy, and a heat dissipating system used for exhausting residual heat; the heat energy collecting device and the magneto-calorific machine set are connected through the heat energy transmission device, and the magneto-calorific machine set and the heat dissipating system are connected through the heat energy transmission device; and the magneto-calorific machine set comprises at least one magneto-calorific machine unit used for converting heat energy into mechanical energy, and a power shaft connected with the magneto-calorific machine unit, and the magneto-calorific machine unit drives the power shaft to rotate. The magneto-calorific system is operated in the medium and low temperature region, is low in cost, simple to manufacture, long in service life and is suitable for large-scale construction and production.

The invention relates to an antistatic coating and discloses a washing-resistant antistatic coating. The antistatic coating comprises the following components by weight percent: 15-25% of film former, 2-5% of conductive fillers, 0.5-1% of dispersing agents, 0.5-1% of coupling agents, 0.2-0.5% of defoaming agents, 0.3-0.6% of levelling agents, 0.5-1% of anti-settling agents and the balance of solvents. The preparation method can be implemented to prepare the antistatic coating which is efficient, has low toxicity and strong adhesion, is resistant to washing with water and organic solvents and is convenient to use, prepare and process; the components of the antistatic coating are the raw materials which are easily available, so the cost of the prepared antistatic coating can be effectively lowered; and the preparation method is carried out under normal temperature and pressure, the conditions required by the preparation process are easy to reach, the preparation flow is simple and the operability is strong.

The invention discloses a carbon brush of a motor of a drum washing machine. The carbon brush of the motor is characterized by comprising, by weight, from 80% to 90% of graphite powder, from 7% to 15% of asphalt and from 2% to 5% of tungsten powder. A method for manufacturing the carbon brush of the motor of the drum washing machine includes steps of adding the graphite powder, the asphalt and the tungsten powder into a mixer according to the respective weight percentages, and sufficiently mixing the graphite powder, the asphalt and the tungsten powder; feeding a mixture into a grinder after the graphite powder, the asphalt and the tungsten powder are sufficiently mixed to obtain the mixture, grinding the mixture, and sieving powder obtained after the mixture is ground; performing compression moulding for the powder; sintering; cutting and grinding surfaces after sintering is completed; coating solid glue on two surfaces of a crude product of the carbon brush of the motor after the surface grinding is completed to obtain the crude product; and then punching, embedding wires and grinding arcs to obtain a finished product. The grain size of screen cloth is 100 meshes. The carbon brush and the method have the advantages that a process is simple, conditions are easy to realize, the carbon brush obtained by the method is low in breakage rate and long in service life, loss can be effectively reduced, and the production cost can be effectively saved.

The invention discloses a rate gyroscope calibrating method which is used for solving the technical problem of complicated error calibration process of an existing rate gyroscope. According to the technical scheme, a carrier respectively rotates around an X axis, a Y axis and a Z axis and a rotation angle rate of the carrier is calculated according to output data change of a magnetic sensor so as to be used as a reference angle rate of calibrating a rate gyroscope, and a scale factor and a zero offset error of each axis of the rate gyroscope are respectively calibrated. According to the rate gyroscope calibrating method, a rate rotary table is not needed, realizing conditions are simple and online rapid calibration is facilitated. Through testing, the static precision of the gyroscope can drift within 2.5 DEG for 10min, and when an input angle rate is less than 25 DEG/s under a dynamic condition, errors of three axes can be kept to be within +/-2 DEG.

The invention belongs to the field of environmental protection and particularly relates to a modified preparation method for a corn straw capable of adsorbing arsenic in water. Middle nodules of the air-dried corn straw are removed, the corn straw is cut into short sticks, the short sticks are washed and dried to reach constant weight, the hard barks on the surfaces are removed, the short sticks are cut into straw particles, the straw particles are soaked in isopropyl alcohol for 8-10 hours, washed with deionized water and dried, then the processed straw particles are soaked in a NaOH solution with the concentration of 0.8-1.2mol/L for 6-8 hours, washed with deionized water and dried, then the processed straw particles are soaked in oxalic acid with the concentration of 0.18-0.22mol/L, washed with deionized water, and dried, so as to finally obtain a modified corn straw adsorbent, wherein the maximum saturated adsorption is up to 94[mu]gAs(III)/g (straw). The materials are easy to get, the cost is low, the toxicity is low, the modified method is simple in operation steps, the conditions are easy to achieve, high temperature or high pressure is not needed, the method is easy to realize, and the arsenic adsorption effect of the modified corn straw is good.

The invention discloses a method for increasing the leaching rate of polyphenols in dendrobium officinale kimura et migo. The method comprises the steps of pre-treatment, extraction and post-treatment, and specifically comprises the following steps of cleaning and air-drying raw materials fresh dendrobium officinale kimura et migo twigs, drying the dendrobium officinale kimura et migo twigs for 3.0 to 3.5h at 95 to 100 DEG C until the water content is 15 to 30 percent, and cutting the dendrobium officinale kimura et migo twigs into 3.0 to 4.0cm short twigs a; performing expansion wall breaking and crushing on the short twigs a, sieving the crushed short twigs a to obtain dendrobium officinale kimura et migo extract prepared material b by virtue of a 100 to 300-mesh sieve, adding an alcohol solvent in an amount which is 4 to 8 times the weight of the dendrobium officinale kimura et migo extract prepared material b, performing extraction 3 to 4 times at 60 to 80 DEG C for 1 to 3h every time, mixing extracting solutions, and performing filtration and concentration to obtain extract c with relative density of 1.1 to 1.3; drying, crushing and sieving the extract c to obtain a target extract. The method is less in production equipment investment, a process is easy to operate, conditions are easily reached, a preparation process is low in energy consumption and cost, convenience in processing is achieved, and adopted reagents are nontoxic, harmless, safe and environment-friendly; the polyphenols in a prepared dendrobium officinale kimura et migo product can be easily leached, and the leaching rate of the polyphenols in the dendrobium officinale kimura et migo is increased.

The invention particularly relates to an indium sulfide photocatalyst with hierarchical structures and a preparation method thereof. The cubic-phase beta-In2S3 catalytic material can be prepared by a simple hydrothermal method and adopting polystyrene sodium sulfonate (PSS) as a special surfactant. Experimental conditions are easy to reach, no acid or base needs to be added to adjust the pH of the reaction solution so that the environmental pollution is reduced; the synthesized material is small in size and uniform in particle size which is between 100nm and 200nm and the specific surface area between 70m<2>/g and 82m<2>/g and the adsorption of pollutants molecules during the catalytic reaction is facilitated; by regulating and controlling the structure of PSS, the In2S3 material has the special hierarchical structures formed by assembling nanosheets; due to the morphologic characteristic, the In2S3 material has larger specific surface area and more active sites are generated; by the staggered nanosheets, light can be reflected for many times among the structures of the catalyst and thus the utilization rate of light is increased; and when 2,4-dichlorophenol is subjected to photocatalytic degradation for 80 minutes by the nanomaterial, the degradation rate can reach 91%.

The invention discloses a method for extracting scandium from scandium-containing iron-rich acid liquor through P507. The method comprises a step of extracting to remove iron and a step of extracting to gain scandium. The method specifically comprises the following steps of: firstly, extracting through an N235-containing organic phase to remove the iron from the scandium-containing iron-rich acid liquor, wherein the extraction rate is up to more than 99.5%, and the loss ratio of scandium is less than 0.5%; and secondly, extracting the scandium through a P507-contianing organic phase. According to the method, the scandium-containing iron-rich acid liquor contains 5 to 50mg/L of scandium based content, 5 to 45g/L of iron based on content, and 1 to 5.5mol/L of H<+> based on concentration; and the extracting rate of the scandium is up to 99%. The method disclosed by the invention is a novel method which is low in cost and high in scandium recovery rate, can meet the demand of industrial production, and has a wide prospect.

The invention relates to a method for preparing aromatic hydrocarbon and derivative compound thereof, especially a preparation method of 5-chlorosulfonyl isophthaloyl acid chloride. The method in the invention comprises: using sodium 3,5-dicarboxybenzene sulfonic acid and phosphorus pentachloride in ratio of 1:3-6 to perform chlorination reaction; washing by after reaction; extracting by ether; distilling and drying to obtain a transparent colorless oily liquid, cooling into a white crystal which is the object product. The advantages of the invention is that: the product yield and purity are high, the chlorination agent amount is low, the operation is easy; the condition is easy to obtained, the reaction is easily controlled, and the environmental pollution is reduced.

The invention discloses a quenching agent, belonging to the field of heat treatment of metals. The quenching agent comprises the following components in parts by weight: 15-20 parts of polyoxyethylene ether, 5-8 parts of triisopropanolamine, 3-7 parts of polyvinyl acetate, 1-4 parts of sodium benzoate, 0.5-2 parts of a defoaming agent and 70-80 parts of water. By applying the quenching agent to the heat treatment of the metals, the high-temperature cooling speed can be effectively increased, the high-temperature cooling time can be prolonged, and the cracking of workpieces can be prevented; furthermore, the quenching agent is safe and environmental friendly in use, extremely low in environmental pollution and cost, and easy to industrially produce.

The invention mainly provides a production method of environmental protection biologic rubber tire filling oil, which uses the technologies of hydrogenation, extraction, fractionation in a combination way and provides a new idea for preparing the rubber filling oil by using mineral oil and vegetable oil together as raw material oil. A conventional device in traditional processing industry can be used. The production method has mature technology, simple production process and lower cost. The produced environmental protection rubber filling oil not only enables the environmental protection performance of an oil product to achieve European Union requirements, but also has good compatibility with rubber, and various main indicators all meet the quality indicator requirement of environmental protection tire oil.

The invention discloses an improved fruit and vegetable sterilization preservative comprising the following components in percent by weight: 10-30% of chitosan, 20-30% of activated aluminium oxide, 5-8% of citric acid, 0.5-1% of acrylate, 5-20% of sulphite and balance of water. The preparation method of the improved fruit and vegetable sterilization preservative comprises the following steps of: a, mixing 10-30 parts by weight of chitosan, 20-30 parts by weight of active alumina oxide and 30-60 parts by weight of water, blending, and centrifuging to obtain supernate; b, adding 5-8 parts by weight of citric acid and 0.5-1 part by weight of acrylate into the supernate obtained by the step a, and controlling the temperature at 60-80 DEG C; c, washing a mixed solution obtained by the step b; and d, after cooling is carried out, adding 5-20 parts by weight of sulphite into the mixed solution obtained by the step c, stirring, and standing to obtain the improved fruit and vegetable sterilization preservative. The invention has the advantages that the sterilization preservative is safe, non-toxic and pollution-free and the preparation method of the sterilization preservative is simple.

The invention relates to the field of flame-retarding products, in particular to a flame retardant, polyester, a flame-retarding epoxy resin cured material and a preparation method thereof. The flame retardant obtains high flame retardancy under the synergistic action of nitrogen and phosphorus, and the strength of epoxy resin is enhanced through amino and hydroxyl in a molecule. The flame-retarding epoxy resin cured material is high in flame retardancy and relatively high in mechanical property.

The invention discloses a waterborne polyurethane emulsion with high stretch intensity and a preparation method thereof, and belongs to the technical field of paint. The waterborne polyurethane emulsion is prepared from the following raw materials in parts by weight: 30 to 90 parts of polyether polyol, 20 to 60 parts of polyisocyanate monomers, 3 to 13 parts of hydrophilic chain-extending agents,2 to 7 parts of salt-forming agents and 2 to 5 parts of quadrol. The invention also discloses a preparation method of the waterborne polyurethane emulsion with high stretch intensity. The method has the advantages that the polyether polyol, polyisocyanate monomers and hydrophilic chain-extending agents are gradually polymerized according to a certain proportion; under the chain expansion effect ofamine chain extenders, the anionic waterborne polyurethane emulsion is synthesized by a self-emulsification method. After the coating deformation film forming by the waterborne polyurethane emulsionwith high stretch intensity, the fracture intensity is higher than or equal to 45 MPa; the stretch resistance performance is good.

The invention relates to the field of biological information, in particular to the function of a surfactant, and a signal amplification method for SPR (Surface Plasma Resonance) detection on low molecular weight substances. According to the method, molecules with smaller relative molecular mass are aggregated into micelles through the surfactant to form macromolecules, and the macromolecules react with enzymes, the sensitivity is very high, and the reaction speed is very fast, so that the method is suitable for quick and sensitive detection; compared with other signal amplification methods, the signal amplification method provided by the invention is based on the principle that the micelles can be aggregated through the surfactant, simple and convenient to operate, and high in environmental repeatability.

The invention relates to a visual detection method. Visual detection is performed by converting indicating substances of traditional target molecules into catalysts such as nano-particles or enzymes capable of achieving catalysis for gas generation, and then using the catalysts at the positions of the target molecules to catalyze substrates to generate gas. By the aid of the method, detection sensitivity can be greatly improved, and even single molecule detection can be achieved. Generated bubbles are regarded as visual signals to be read, and accordingly the method is high in speed, easy to detect and extremely high in sensitivity and facilitates reading of results, and equipment for analysis is greatly simplified. The technology high in throughput and sensitivity and capable of achieving real-time detection can be obtained. The method high in adaptability is applicable to clinical and common laboratories and even can be used for field detection.

A full-degree-of-spatial-freedom metamorphic mechanism type palletizing robot mechanism comprises a platform, a planar locating mechanism, a spatial driving mechanism and a manipulator assembly, wherein a first controllable motor and a second controllable motor are fixedly mounted on the platform; a platform fixing rod is fixed on the platform to realize assembly of the planar locating mechanism and the platform; a chute is fixed on the platform to realize assembly of the spatial driving mechanism and the platform; a horizontal output fixing rod is horizontally fixed on a vertical rod to realize assembly of the spatial driving mechanism and the planar locating mechanism; and a horizontal rotary slider sleeves a horizontal output slide rod to realize assembly of the manipulator assembly andthe spatial driving mechanism. The full-degree-of-spatial-freedom metamorphic mechanism type palletizing robot mechanism is simple in structure and convenient to machine, manufacture and mount, can realize full-degree-of-spatial-freedom location according to functional demands or environmental changes, and can deal with different work tasks under different working occasions.