42results about How to "Performance comparison" patented technology

The invention discloses a thermoplastic elastomer composition for preparing a flexible printing material for three-dimensional printing rapid prototyping. The thermoplastic elastomer composition comprises the following components in percent by weight: 16.8-90.0% of thermoplastic elastomer, 1.0-49.8% of polyolefin, 0-44.0% of softening agent, 0.1-1.3% of lubricating agent and 0.2-0.3% of antioxidant. The hardness of the thermoplastic elastomer is Shore hardness of 50-90A, and the prepared flexible printing material is low in hardness, has outstanding flexibility and toughness and excellent handfeel and is particularly applied to the fields of special industrial design and consumer applications such as the manufacturing of toys, jewelries and fingerprints.

The invention relates to a method for rapidly processing and extracting nucleic acids from various trace clinical samples. The method comprises the following steps: cracking cells; absorbing by a filter membrane; and leaching and extracting nucleic acids (DNA and RNA). The invention also relates to a kit for rapidly extracting nucleic acids from clinical samples and application thereof.

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high/low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g/g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.

The invention discloses a boracic Cu-P-based amorphous brazing filler metal and a method for preparing the same, which belong to the technical field of the brazing of amorphous brazing filler metal and copper as well as copper alloy. The amorphous brazing filler metal comprises the following components in percentage by weight: 7.2 percent of P, 14.0 percent of Ni, 5.4 percent of Sn, 0.02 to 0.04 percent of B, 0.2 percent of Si, and the balance of Cu. The amorphous brazing filler metal is prepared by adopting a rapid solidification technique, and the prepared brazing filler metal has a bright and clean surface, two smooth sides and better toughness. The melting temperature of the amorphous brazing filler metal is between 602 and 663 DEG C and the brazing temperature is between 670 and 720 DEG C. The amorphous brazing filler metal is applicable to the brazing of the copper and the copper alloy, and applicable brazing process methods comprise flame brazing, furnace brazing, gas shield brazing, salt bath brazing, and the like. By adopting the amorphous brazing filler metal to perform flame brazing of red copper, the wetting property of the brazing filler metal is obviously better than the brazing filler metal with same components prepared by a conventional melting technique, and the shear strength of a brazed joint is more than 112 MPa.

The invention relates to alkaline stemming which is prepared from the following raw materials: 25%-50% of sintered magnesia, 5%-20% of dust coke, 10%-25% of magnesium-carbon reclaimed material, 1%-10% of carbon-containing resin powder, 5%-10% of silicon carbide, 5%-10% of Jiaozuo clay, 1%-5% of alpha aluminum oxide, 5%-20% of light burning magnesium powder, 5%-10% of andalusite, and stemming-dedicated resin accounting for 10%-20% of the total weight of the raw materials. The alkaline stemming provided by the invention has the advantages of good plasticity and adhesion, appropriate porosity, slight volume expansion at high temperature, good sintering property, high strength, scouring resistance, erosion resistance, easiness in tapping and environmental friendliness, and does not discharge pollutant gas in the sintering process; the molten iron scouring resistance of the alkaline material is fully played, and the alkaline stemming does not bring pollution or harmful impurities to molten iron; the harmful impurities in the molten iron can be reduced to purify the molten iron; the harmful components such as phosphorus, sulfur and silicon in the molten iron are reduced; the alkaline stemming provided by the invention has the advantages of long service life, short sintering time, high strength and easiness in tapping, reduces the maintenance cost of an iron notch and is conducive to the stable operation and stable and high yield of a blast furnace.

The invention belongs to the technical field of radiation protection and discloses nuclear-radiation-protection yarn with a temperature control function and a production method thereof. The productionmethod includes: subjecting core-shell-structured phase change microcapsules to surface modification, washing and filtering; blending the modified phase change microcapsules and polymer in deionizedwater, and performing solution spinning to produce phase change microcapsule-polymer composite fibers; doubling the change microcapsule-polymer composite fibers and radiation protection polymer composite fibers to form the nuclear-radiation-protection yarn with functions of neutron and gamma ray protection and temperature control. The nuclear-radiation-protection yarn can be further woven into nuclear-radiation-protection textile fabric and wearable nuclear-radiation-protection products and is promising in application prospect in fields such as nuclear operation and nuclear emergency. The novel preparation method is simple to operate, stable in process and low in cost.

The invention creatively provides a low temperature resistant polypropylene material and a preparation method thereof. The low temperature resistant polypropylene material comprises, by mass, 54-88% of polypropylene, 10-20% of elastomer, 0-10% of polyethylene and 0.4-1% of an assistant. The low temperature resistant polypropylene material has good low temperature toughness and rigidity in low temperature environment, has obviously better brittle temperature than other like products in the market, and can reach an expected effect without increasing the production cost.

The invention provides a preparation method of quaternary ammoniated and modified polyacrylonitrile-based protofilaments and carbon fibers. The preparation method comprises the following steps of: preparing a reaction solution by taking AN (Acrylic Nitrile), MA, IA, AS and AIBN (2,2-azobisisobutyronitrile) as solutes and taking DMSO (Dimethylsulfoxide) as a solvent; carrying out polymerization reaction on the obtained reaction solution and carrying out vacuum dynamic monomer-removing and de-foaming to obtain a ammoniated and modified spinning solution; and carrying out condensation and molding, hot water stretching, three times of oil feeding, steam stretching and sizing, pre-oxidization and carbonization treatment on the obtained spinning solution to obtain the carbon fibers. According to the preparation method disclosed by the invention, a reasonable formula and reasonable technical parameters are adopted so that the homogenizing degree of the obtained raw spinning solution is high in the condensation and molding process, and the strength of the protofilaments is improved. According to the preparation method disclosed by the invention, the strength and the modulus of the carbon fibers are greatly improved, the variable coefficient becomes small and the hook strength of the carbon fibers is obviously improved.

The invention, which belongs to the technical field of micromechanical systems, discloses a displacement amplifying tuning fork type micro-mechanical gyroscope based on a lever effect. Photoetching isperformed on a glass substrate and metal is sputtered, and a metal electrode is formed by stripping; a silicon wafer is bonded to glass substrate and photoetching deep etching is performed on the silicon wafer on the glass substrate to form an anchor point; and photoetching deep etching is performed on the silicon wafer to release an MEMS mechanical structure that is fully-decoupled fully-symmetric structural tuning fork structure. According to the invention, a flexible lever mechanism is arranged between the central mass block and the detection frame of the detection mode, the detection displacement of the central mass block is amplified and is transmitted to the detection frame, and the detection frame detects a capacitance change obviously. Meanwhile, secondary decoupling is realized by using the dead point effect of the lever and the decoupling property of the U-shaped force transmission beam, so that the orthogonal coupling is reduced and thus the higher sensitivity and higher resolution are realized.

The invention provides a method for producing a foam material in a rubber mold. The method includes that hard material and a soft material are mechanically mixed; the hard materials is formed by melting extruding and granulating of oil-extended rubber, polystyrene, K resin, polyphenyl ether and/or heavy calcium powder; the soft material is formed by mixed smelting and granulating of oil-extended rubber, methyl vinyl silicone rubber, C5 petroleum resin, foamer AC and expended-microsphere foamer; the oil-extended rubber is formed by mixing of a styrene-butadiene-styrene segmented copolymer and softening oil. The invention further provides a sole material produced by the method for producing the foam material in the rubber mold. The foam sole material produced with the method has the advantages of light weight, wear resistance, cold resistance, good production performance, high production efficiency, reclamation, environment friendliness and the like.

The invention relates to a manufacturing method of a multi-stage frothing quick medium and high-voltage electrode foil. A conventional single-stage constant-current frothing technique is improved into a direct-current multi-stage frothing technique with special waveform, the total processing time of each stage is divided into multiple different processing time periods, connecting points of adjacent time periods are time nodes, the current density is gradually changed along with the change of the processing nodes, multi-stage frothing is favorable for frothing areas which are not frothed again, additionally, the manufacturing method has the advantages of large frothing current density and small current density at a hole growth stage, extracorporeal circulation is added to frothing and chambering so as to be favorable for forming large holes, thereby increasing the capacity of an etched foil, and the manufacturing method is suitable for a high-voltage formed foil.

The invention discloses ultra-low-volume cypermethrin.profenofos liquid and a preparation method thereof. According to the liquid, cypermethrin and profenofos are used as active ingredients, and glycol ether, methyl oleate, epoxidized soybean oil, an emulsifier and other additives are added. The preparation method comprises the steps that the raw materials are preliminarily stirred and mixed according to the proportion, then a high-shear pump is started to perform shear mixing, so that full shearing, dispersion, emulsification and homogenization are conducted on a system to obtain stable homogeneous-phase liquid. The ultra-low-volume liquid is convenient to prepare, low in cost, good and lasting in pesticide effect and high in coordinative synergism, and water resources are saved. Environmental pollution can be reduced, the pesticide utilization rate can be improved, and the pesticide application amount can be decreased. Compared with a conventional ultra-low-volume liquid preparation method, the prepared ultra-low-volume liquid is more stable in performance and longer in lasting period.

The process of making composite substrate for micro stripe gas chamber detector is one RF plasma aided chemically vapor deposition process to deposit diamond-like film onto D263 glass. Optical glass D263 via pre-treatment is first deposited inside high vacuum reaction chamber and then annealed in a nitrogen atmosphere furnace to produce composite substrate. By means of applying bios, increasing magnetic field and annealing treatment, the present invention obtain high quality composite diamond-like/D263 glass substrate. The present invention overcomes the stress between the film and the substrate, lower combining force and other problems, and has less detector charge accumulating effect and high substrate stability.

The invention provides an on-line three-roll fitting large floor with locking button preparation technology, and relates to the technical field of plastic wood material production. The preparation technology mainly comprises a material mixing process, an extruding process and a fitting process; the required raw material components and the amount of components in the mixing process are: 30 to 35% of PVC 5, 60 to 70% of ground calcium carbonate, 0.03 to 0.07% of PE wax, 0.1 to 0.2% of calcium and zinc stabilizer, 0.1 % of processing modifier, and the balance of MBS, and the sum of the components is 100%. The on-line three-roll fitting large floor with locking button preparation technology has the following beneficial effects that a previous complex technology of fitting again is solved, the on-line integration of extruding and fitting is fully realized, the biggest advantage is blending and pressing a color film and a wear-proof layer by using temperature, no glue exists and the peel strength is greatly improved.

The invention discloses an ultralow volume liquid agent of profenofos and a preparation method of the ultralow volume liquid agent. According to the liquid agent, the profenofos is selected as an active component, and additives, such as glycol ether, methyl oleate, epoxy soybean oil, an emulsifying agent and the like are added. The preparation method of the ultralow volume liquid agent comprises the following steps of preliminarily stirring and mixing the raw materials according to a compounding ratio, and starting a high-shear pump for shearing and mixing so that a system can sufficiently perform shearing, dispersion, milking and homogenizing, and stable homogeneous liquid is obtained. The ultralow volume liquid agent disclosed by the invention is convenient to process, low in cost, good in drug effects, long in persistent effect and high in coordination and synergism, and water resources can be saved; and environmental pollution can be reduced, the utilization rate of pesticides can be increased, and the application quantity of the pesticides can be reduced. Compared with a preparation method of a conventional ultralow volume liquid agent, the preparation method disclosed by the invention has the advantages that the ultralow volume liquid agent prepared by the preparation method is stabler in properties and longer in persistent effect periods.

The invention relates to a method for preparing single-piece talc powder. The method comprises the following steps: (1) adding talc powder and a coupling agent to a high-speed mixing stirrer to obtaina premixed substance; (2) dispersing and mixing the premixed substance obtained in the step (1) and a foaming agent, and adding the mixed material into a rotary homogenizer, and stripping the talc powder step by step under the shearing action of rotating blades to obtain a primary product of the single-piece talc powder; and (3) separately washing the primary product of the single-piece talc powder obtained in the step (2) with water and acetone, and performing drying to obtain the single-piece talc powder. Compared with the prior art, the talc powder prepared by the method provided by the invention has high efficiency and low costs, can be widely used in a filler, and has broad market application prospects.

The invention discloses a high-sensitivity microwave microfluidic sensor based on an improved split-ring resonator, which is provided with a three-layer structure, the top layer comprises two microstrip lines, a metal sheet, an IDC-SRR structure and an SMA connector, each microstrip line is provided with an input port and an output port, the input port and the output port are respectively connected with the SMA connector, the SMA connector is communicated with a vector network analyzer, and the vector network analyzer is communicated with the IDC-SRR structure. The IDC-SRR structure is provided with PDMS, and a microfluid channel is formed in the PDMS; the middle layer comprises a dielectric plate with four metal through holes; the bottom layer comprises a metal sheet, two microstrip lines and an SRR structure, and an etching region is formed in the middle of the metal sheet; the four metal through holes are communicated with the top layer and the bottom layer; one end of the SRR structure is connected with the interdigital capacitor of the IDC-SRR on the top layer through two metal through holes, and the other end of the SRR structure is connected with the metal sheet on the top layer through the other two metal through holes. The sensor is high in sensitivity, wide in measurement range and small in detection error, and ensures the detection result.

The invention provides a plant-type nano latex paint, which is characterized by being prepared from the following raw materials by weight through bleeding: 30-50 parts of nanometer titanium dioxide, 10-20 parts of nanometer zinc oxide, 60-80 parts of a synthetic resin emulsion, 80-120 parts of a nano polyacrylate emulsion, 4-8 parts of nano calcium carbonate powder, 20 -40 parts of a poly vinyl acetate emulsion, 30-50 parts of deionized water, 1-5 parts of tannic acid, 1-2.5 parts of orange oil, 1-2 parts of a dispersant, 0.5-0.8 part of a film-forming agent, 2-3 parts of a thickening agent, 0.4-1.2 parts of a defoaming agent and 1-2 parts of a antifogging agent. The latex paint has the advantages of high tensile strength, good elasticity, good water resistance, anticorrosion performance, and environment-friendliness.

The invention provides a processing method of a rain boot material and a rain boot material prepared through the method. The rain boot material is formed by mechanically mixing a hard material and a soft material. The hard material is formed by melting, extruding and granulating oil-extended rubber, polystyrene, K resin, polyphenyl ether, maleic anhydride modified polyolefin elastomer and/or heavy calcium powder. The soft material is formed by mixing, smelting and granulating oil-extended rubber, methyl vinyl silicone rubber, C5 petroleum resin, foaming agent AC and expandable microsphere foaming agent. The oil-extended rubber is formed by mixing styrene-butadiene-styrene segmented copolymer and softening oil. The invention further provides a rain boot and a rain boot processing method. The prepared rain boot or rain boot material has the advantages of being good in color, luster and brightness, light in weight, resistant to wear and cold, good in processing performance, high in production efficiency, recyclable, environmentally friendly and the like.

The invention provides a production process of a wood-plastic plate capable of being directly nailed and relates to the technical field of production of plastic-wood materials. The production process mainly comprises a production process of mixing materials, granulating and extruding; in a granulating process, raw material components and component amount are as follows: 40 percent to 60 percent of bamboo powder or wood powder, 15 percent to 30 percent of PE (Polyethylene), 4 percent to 10 percent of talcum powder, 10 percent to 15 percent of toner, 2 percent to 5 percent of a coupling agent and the balance of maleic anhydride for grafting; the sum of all the components is 100 percent. The production process of the wood-plastic plate capable of being directly nailed has the beneficial effects that the density of the product is low; the density of an original product is 1.35g/cm<3> and the density of the product prepared by the production process is reduced to 1.15g/m<3>, so that nails can conveniently penetrate through the wood-plastic plate.

The invention provides a continuous injection shoe sole material and a processing method thereof. The continuous injection shoe sole material is prepared by mechanical mixing of a hard material and a soft material. The hard material is prepared by the melt extrusion and the granulation of oil filled rubber, polystyrene, K resin, polyphenylene ether, maleic anhydride modified propylene-based elastomer, and/or heavy calcium powder. The soft material is prepared by the mixing smelting and the granulation of oil filled rubber, methyl vinyl silicone rubber, C5 petroleum resin, foaming agent AC and expandable microsphere foaming agent. The oil filled rubber is prepared by mixing styrene-butadiene- styrene triblock copolymer and softening oil. The invention further provides a continuous injection shoe and processing method thereof. The prepared continuous injection shoe sole material has the following advantages that shoe surface and shoe sole can be formed by direct injection, and the continuous injection shoe sole material has the advantages of being light in weight, wear resistant, cold resistant, good in processing performance, and high in production efficiency, recyclable and environmental friendly and the like.

The invention discloses a double-photosensitive double-electrode photoelectrochemical sensor as well as a preparation method and application thereof. The sensor comprises a counter electrode and a working electrode, wherein the surface of the counter electrode is modified with three-dimensional graphite phase carbon nitride loaded with gold nanoparticles, the surface of the counter electrode is modified with nitrogen-doped carbon-cuprous oxide shell-core tetrakaidecahedron, and the working electrode is self-assembled with a specific aptamer probe. The preparation method comprises the following steps: modifying three-dimensional graphite phase carbon nitride loaded with gold nanoparticles, a nitrogen-doped carbon-cuprous oxide shell-core tetrakaidecahedron and a specific aptamer probe on conductive glass, and constructing a dual-photosensitive dual-electrode system by the three-dimensional graphite phase carbon nitride, the nitrogen-doped carbon-cuprous oxide shell-core tetrakaidecahedron and the specific aptamer probe. The double-photosensitive double-electrode photoelectrochemical sensor disclosed by the invention has the advantages of high stability, long service life, strong anti-interference capability, wide detection range, low detection limit and the like, can realize specific detection of pollutants (such as antibiotics) in media such as water bodies and organisms, is high in utilization rate, and has very good use value and application prospect.