86results about How to "No change in composition" patented technology

The invention discloses a device and a method for generating, sampling and analyzing gas hydrates. The device comprises a gas supply module, a liquid supply module, a gas hydrate generation module, a sampling module, a temperature control module, a data acquiring and processing module and a gas chromatograph. The method comprises the steps of acquiring gas components in a gas phase, a liquid phase and a hydrate phase in a phase equilibrium point of a multicomponent mixed gas hydrate, the generation process of the multicomponent mixed gas hydrate and hydrate-method separation gas respectively through the device, analyzing the components in gas chromatography and obtaining the component-distribution situation of multicomponent mixed gas in each phase, as well as the recovery rate and separation factor of the hydrate-method separation gas. The invention solves the study on the determination of each component of mixed gas in each phase state in the generation experiment of the multicomponent mixed gas hydrate, can accurately sample, does not affect other conditions or change the component distribution of the other phase states, ensures true accurate analysis results, and applies to the study on the generation of the multicomponent mixed gas hydrate and gas separation-purification experiment. The method and the device have the advantages of simplicity, convenient operation and low cost.

The invention belongs to the technical field of medical bone injury restoration materials, in particular discloses anti-collapsibility calcium phosphate cement, as well as a preparation method and the application thereof. The anti-collapsibility calcium phosphate cement is prepared by uniformly mixing 2-10 percent of beta-cyclodextrin or derivates thereof by mass percentage with 90-98 percent of common calcium phosphate cement by mass percentage. The invention successfully applies the beta-cyclodextrin or the derivates thereof to the common calcium phosphate cement for the first time, not only remarkably improves the anti-collapsibility performance of original calcium phosphate cement, but also keeps the original curing characteristics of the original calcium phosphate cement and improves the mechanical performance requirements thereof, effectively improves the success rate of operations, widens the application fields of the beta-cyclodextrin or the derivates thereof and enables the calcium phosphate cement to have wider application prospects.

The invention discloses a self-circulation micro-fluidic chip, as well as a preparation method and a usage of the self-circulation micro-fluidic chip. The micro-fluidic chip comprises a microfluid layer, an electroosmosis driving layer and a chip base layer from top to bottom, wherein the electroosmosis driving layer defines a microfluid flow channel and a wide/narrow electrode liquid metal flow channel with the microfluid layer and the chip base layer respectively; the microfluid flow channel and the wide/narrow electrode liquid metal flow channel are independent and are filled with a to-be-driven solution and a liquid metal respectively; the electroosmosis driving layer and the wide/narrow electrode liquid metal flow channel are interdigital; the lower surface of the electroosmosis driving layer is completely covered with the wide/narrow electrode liquid metal flow channel; the upper surface of the electroosmosis driving layer is exposed in the microfluid flow channel; and the two ends of the wide/narrow electrode liquid metal flow channel are communicated with a power supply via four metal electrodes. The micro-fluidic chip has the advantages of small size, high integration level, portability, good stability and the like, is low in preparation cost and wide in application scope, and a preparation technology of the micro-fluidic chip is also very simple and practicable.

The invention discloses a method for constructing a grain size gradient structure on the surface of a metal material. The method includes the following steps that pretreatment is performed on the metal material so that a cold rolled structure or a fine-grain structure can be obtained; then degreasing, surface grinding and polishing and other treatment are performed on a cold rolled plate or a fine-grain plate, and roughing and blackening treatment increasing the laser absorption efficiency of the surface of the cold rolled plate is performed; and a continuous laser device is adopted, reasonable parameters are set to perform laser heat treatment on the surface of the cold rolled plate, and the coarse grain-fine grain gradient structure is formed on the surface of the obtained metal material. The gradient structure material obtained through the processing method has the beneficial effects that the surface grain size is large, the core grain size is small, and no obvious interface layer exists; the coarse grain-fine grain gradient structure makes the thickness of the gradient structure on the surface of the metal material larger than that in the prior art, and the roughness of the surface of the gradient structure cannot be changed although surface processing treatment is performed.

The invention relates to injectable efficient suspended stable calcium phosphate cement and a preparation method and application thereof. The invention discloses the injectable efficient suspended stable calcium phosphate cement and the preparation method and the application thereof. When fumed silica and a modified product thereof are applied in the injectable calcium phosphate cement, the suspension stability of the original calcium phosphate cement is remarkably improved, the curing property of the calcium phosphate cement is kept on the basis that the operation is simple and convenient, and meanwhile the requirements of the injectable property and the compressive strength of the calcium phosphate cement are not reduced. The calcium phosphate cement has the advantages of low raw material cost, simple preparation, convenience for operation and the like, has good suspension stability, can be stored for a long term under certain conditions, and is expected to be used as a high-performance novel tissue repair material which realizes large-scale industrialized production and is applied to clinic.

The invention belongs to the technical field of medical materials, and discloses a composite bone repair material of a degradable macromolecule network which can in situ form a three-dimensional interpenetrating porous structure and calcium phosphate bone cement and a preparation method and application of the bone repair material. According to the preparation method, a macromolecule network structure is obtained through printing by means of a 3D printing technology, CPC slurry is injected into the macromolecule network structure, and the repair material is obtained. The degradable macromolecule network which can in situ form the three-dimensional interpenetrating porous structure is printed out through 3D printing, the characteristics, size and porosity of in-situ pore forming are optimized, and the material has a good mechanical property; the macromolecule network is degraded in CPC to in situ form three-dimensional interpenetrating large holes beneficial for bone tissue and blood vessel ingrowth, and therefore new bone tissue and new blood vessels can grow into the CPC; meanwhile, the specific surface area of the CPC is increased, degradation of the CPC is promoted, and therefore the degradability and osteogenesis and blood vessel generation capabilities of the CPC are effectively improved.

The invention provides a method for wet extraction of purified microalgae oil. The method comprises the following steps: (1) adding an ethanol solution into ooze of collected microalgae, quickly stirring the mixture uniformly, carrying out centrifugation, and collecting sediments to obtain dehydrated algae ooze; (2) adding non-toxic or slightly-toxic organic solvent of a water solution of the organic solvent into the dehydrated algae ooze obtained in the step (1), carrying out cell disruption on the algae ooze, and extracting coarse oil in the microalgae; (3) carrying out centrifugation, collecting the coarse oil obtained in the step (2), adding water and inorganic salt into the coarse oil, stirring the mixture uniformly to form a coarse oil-water solution, adding n-hexane into the coarse oil-water solution, carrying out standing layering or centrifugal layering after uniform mixing to form three layers which are the upper solution layer, the middle solid matter layer and the lower solution layer, and collecting the solution on the upper layer; (4) carrying out desolvation on the solution on the upper layer to obtain the microalgae oil. According to the method for wet extraction of the purified microalgae oil, the yield of esterified grease is high, operation is easy, and energy consumption is low.

The invention discloses a high-temperature and high-confining-pressure fluid-solid mutual effect testing device and a testing method. The high-temperature and high-confining-pressure fluid-solid mutual effect testing device comprises a pressure container, wherein two axial pressing rods, which are symmetrically sealed, are arranged in the pressure container in the horizontal direction; a test sample is arranged between the two pressing rods; a heating device for heating the test sample sleeves the outer side of the pressure container; a liquid pressing hole and an optical window are arranged on the surface of the pressure container; the heating device is arranged in a groove of a base; a temperature sensor is arranged on a contact surface between the heating device and the pressure container; theliquidpressing hole is communicated to a test sample placement part; and the optical window is aligned to the center of the test sample and is provided with an optical measurement system for observing a test sample light spectrum. According to the testing device and testing method, by carrying out chemical reaction and light spectrum measurementon the test sample under high-confining-pressure and high-temperature conditions, the micro morphology characteristics and spectrum collection of solid samples can be observed in situ under high-temperature high-pressure fluid condition, the interaction product of the solid and fluid can be measured in situ, measured data is closer to actual data, the measured data is more accurate and reliable and the accurate practice, and utilization and analysis of the test sample can be more easily guided.

The invention discloses modified quartz sand and a modification method thereof. Aporous silicon dioxide coating layer is arranged on the surface of the modified quartz sand. The modified quartz sand is prepared through the following steps: adding water glass into a mixture of tri-block polymer P123, water and acid-pickled quartz sand first, then adding hydrochloric acid under quick stirring, and performing mixing uniformly,or adding hydrochloric acid first, then adding water glass and performing mixing uniformly; stirring an obtained reaction system uniformly, and performing a oscillating reaction so that the water glass reacts to generate silicon dioxide which covers the surface of the quartz sand; and after the reaction, taking out sediments, and washing, drying and calcining the sediments to obtain the modified quartz sand. According to the invention, cheap water glass is taken as a raw material, the quartz sand is modified by forming the porous silicon dioxide coating layer on the surface ofthe quartz sand, the method is simple to operate and easy to realize, the composition of the quartz sand is not changed while the surface area of the quartz sand is enlarged, and convenience is provided for recycling quartz sand which is used as an adsorbent or filter sand.

The invention relates to a desulphurization method of cracked C5 fraction. The desulphurization method of cracked C5 fraction comprises the following steps: firstly adding a desulfurizer into a cracked C5 fraction raw material, and carrying out a reaction at a certain pressure and a certain temperature for a while; separating a cracked C5 fraction which is free of sulfur from the top of a tower by a filtering and a distillation method; after reaction, obtaining a sulfur compound in a column bottom; the desulfurizer comprises the following components: 3-8% of triethanolamine, 3-8% of acetonitrile, 3-8% of toluene, 3-8% of acetone, 8-12% of benzene, 25-35% of saturated ammoniacal liquor, 8-12% of butyronityile, 8-12% of cyclohexane, 10-20% of aniline, and 3-8% of diethyltoluenediamine. According to the method, a proper amount of desulfurizer is added into the cracked C5 fraction raw material, and the purpose for desulphurization of cracked C5 fraction is realized by the methods of filtering and distillation. The method provided by the invention has a good desulphurization effect, by-products are not introduced into the desulphurized product, and the composition of the cracked C5 fraction is not changed; the desulfurizer has little toxicity and is not volatile and inflammable.

The invention relates to magnesium phosphate cement as well as a preparation method thereof. The magnesium phosphate cement at least comprises the following components in parts by weight: 100-400 parts of sintered magnesia, 100 parts of phosphate and 5-80 parts of a compound retarder, wherein the sintered magnesia is a calcined product of a salt lake-based lithium by-product magnesium oxide; and the compound retarder comprises a mixture of at least two of glucose, sucrose and chloride, and can also comprise citric acid. The preparation method of the magnesium phosphate cement comprises the following steps: mixing the sintered magnesia and the phosphate with the compound retarder, and carrying out ball-milling to obtain the magnesium phosphate cement. The compound retarder can be applied to a bone repair surgery. According to the magnesium phosphate cement disclosed by the invention, the hydration reaction rate and the hydration temperature are reduced; meanwhile, the strength of the magnesium phosphate cement meets the requirements; the operation is simple; and the cost is relatively low.

The invention discloses a method and a device for rapidly extracting saturation pore water from a cement-based material. The method comprises the following steps of: smashing the cement-based material into particles, soaking the particles by water, placing in a vacuum apparatus and carrying out continuous vacuum pumping treatment for 12 hours to 16 hours, and stopping vacuum pumping treatment until no bubbles are generated; filtering the water on the surfaces of the particles, rapidly filling the filtered particles in a hole solution extractor, placing on a universal testing machine pressing plate, pressurizing, and then squeezing out the pore water in the particles. The device is composed of an outer cylinder (1), a pinhole filter screen (2), a macropore inner cylinder (3) and a force transferring cylinder (4). The solution extracted by the device provided by the invention is a pore solution under saturation state flowing out when the particles are squeezed, other substances are not introduced, and composition or concentration of the pore solution is also not changed, so that the actual situation of void water is truly reflected; the device has double filtering effects, the extracted void water does not contain broken particles or impurities, and test foundation is provided for relevant analysis of void water of cement-based materials.

The invention discloses a calcium-iron-silicon-based composite material for restoring heavy metal polluted acid soil and application thereof. The mass ratio of component elements of the composite material is calcium:iron:silicon:manganese:magnesium:phosphorus:aluminum= 30-40:19-25:8-12:1-3:5-6:1-3:2-5, the composite material is particularly prepared from, by volume, 55-70% of calcium silicate, 20-30% of calcium ferrite and 5-15% of compound mixture, and the compound mixture is a mixture of calcium-iron-aluminum oxides, calcium iron silicate, calcium aluminate, calcium-aluminum oxides, calcium-manganese-iron oxides, hydroxyl aluminium phosphate and hydroxyl manganese phosphate. The composite material is used for improving and restoring the heavy metal polluted acid soil, the pH value of the soil can be increased by 0.5-2.5 units, the content of effective state heavy metal in the soil is reduced by 64-98%, the content of heavy metal in agricultural products is reduced by 33-94% compared with a control group, and the yield of the agricultural products is increased by 16-1412% compared with the control group.

The invention discloses a heat accumulating type pure air heating system. The heat accumulating type pure air heating system comprises six heaters arranged in parallel, first air inlet pipelines and an air outlet pipeline, wherein the effective power of each heater is about 9 MW, the heaters are FD07 air tunnel low-line metal sheet heat accumulation heaters, the first air inlet pipelines are connected to the first air inlet ends of the heaters to supply cold air to the heaters, each heater corresponds to one first air inlet pipeline, and the air outlet pipeline is connected to the air outlet ends of the six heaters and mixes and outputs hot air output by the six heaters. The six heaters are arranged in parallel, the effective power of each heater is 9 MW, and the heaters are FD07 air tunnel low-line metal sheet heat accumulation heaters, so that the heating system is formed, and the effective power of the heating system can reach 50 MW.

The invention discloses a heat treatment method for obtaining a high-toughness and high-damage-tolerance double-phase titanium alloy. The heat treatment method comprises the following steps of high-temperature annealing treatment, specifically, keeping the temperature for 0.1-2 hours at T1 temperature, reasonably controlling the cooling speed, preferably, controlling the temperature range from T1 to T-200 DEG C to be 2-50 DEG C/s, controlling the value range of T1 between Tbeta10 DEG C and T, controlling the value range of T between Tbeta10 DEG C and T, controlling the value range of T between Tbeta10 DEG C and T, wherein T is the beta transformation temperature of the double-phase titanium alloy. According to the method, the toughness and the damage tolerance performance of the double-phase titanium alloy are improved by controlling the heat treatment temperature and the cooling speed. The method can be used for the two-phase titanium alloy with two structures under the room temperature conditions of TC11, TA15, TC4, TC17, TC18 and the like, is not limited by the original manufacturing process of the titanium alloy, and is suitable for forge pieces, castings, welding pieces and additive manufacturing pieces of the two-phase titanium alloy.

The invention provides a thermal insulation deslagging agent, wherein pearlite is selected with low expansion coefficient through tests to serve as heat preservation deslagging agent, which achieves the same effect as the SLAX heat preservation deslagging agent by low cost. The invention can be applied before the casting step in the casting industry.

The invention discloses a deslagging agent used for smelting cast iron and a preparation method thereof. The deslagging agent comprises, by weight, 70%-75.2% of silicon dioxide, 12.1%-15.9% of aluminum oxide, 0.5%-1.9% of ferric oxide, 1.2%-3.22% of sodium oxide, 1.9%-3.84% of potassium oxide, 0.9%-1.48% of calcium oxide, 0.47%-1.46% of magnesium oxide, and the balance iron and inevitable impurities. The deslagging agent used for smelting the cast iron mainly comprises SiO2 and Al2O3 and can instantly expand when sharply heated to the temperature of 1100DEG C or over so as to form a viscous active material of a porous structure, so that molten iron, slag in the molten iron, and impurities can adhere together to be gathered; the deslagging agent has a low heat conductivity coefficient so that heat conduction and thermal radiation on the surface of the molten iron can be effectively reduced, and a heat preservation effect is achieved; and the problems, such as corrosive pits, white spotsand wrinkles, which occur frequently during cast iron machining are solved while the defects are overcome.

The invention relates to a device and a method for analyzing the fiber composition content in fabrics, which are used for observing and identifying fibers by utilizing the difference of fibers in apparent micro morphogenesis, and calculating the content of mixed fibers in the surface layer through accurately counting the number of fibers. The device comprises a multifunctional sample platform, a two-dimensional free moving system, a digital photography system, a combined oblique incidence illuminating system, a supporting system and a computer, wherein the multifunctional sample platform can clamp samples without damaging the samples, the two-dimensional free moving system drives the multifunctional sample platform to make motion, the digital photography system can be adjusted with variable magnification and has high resolution, high magnifying power and long focus, and the computer is provided with an imaging acquiring and processing system and a fiber identifying and data statistic system. The device has the characteristics of no need of manufacturing the samples, no damage to the samples in the detecting process, automatic damage-free detection for the sample, suitability for identification and content calculation of fiber in fibers, yarns, fabrics and other fiber aggregation, high detection speed, high degree of automation and convenient operation.

The invention discloses a statistical-optimization-based ZigBee hierarchical routing networking method. A network comprises a coordinator and node routers. The method comprises the following steps that a level attribute is added to each piece of equipment as an attribute Depth for identifying the level of the equipment in the network; and after all the equipment is successfully networked, each piece of equipment maintains a forwarding count parameter Count, and a superior node regulates the level of the node according to a count value of a subordinate node. According to the method, statistics on data loads of the routers can be made in real time, the routers can be allocated and scheduled according to service needs, the communication quality of the network is ensured in an indoor positioning system, and the routers can be deployed in a large scale. The method aims to change a networking mode and a routing mode for a sensor network to optimize the networking method without changing network hardware composition. The method is convenient to use, high in accuracy and practicability and widely applicable to various indoor positioning systems.

The invention provides curing liquid applicable to calcium phosphate-based bone cement as well as a preparation method and application of the curing liquid. The curing liquid applicable to the calciumphosphate-based bone cement comprises the following components by mass percentage: 2-9% of citric acid, 1-6% of PVP, 5-25% of phosphate and 1-5% of PVA. The invention creatively utilizes the abilityof phosphate to promote early hydration products; an acidic environment is provided by citric acid; PVP has a molecular mediated effect on calcium phosphate deposition; PVA has a water-retaining function; through the synergistic effect of citric acid, phosphate, PVP and PVA, the mechanical properties of calcium phosphate bone cement such as curing ability, early strength, late strength and the like are significantly improved, the medical value of calcium phosphate bone cement is expanded, at the same time, calcium phosphate bone cement is closer to clinical use standards, and calcium phosphatebone cement has broad application prospects.

The invention discloses an enhanced gas diffusion layer microporous membrane for a fuel cell membrane electrode, the membrane electrode and a preparation method thereof, and belongs to the field of fuel cells. A fuel cell enhanced gas diffusion layer is a self-supporting microporous membrane, the microporous membrane is prepared by performing rolling, stretching for film formation and roasting ona mixture of polytetrafluoroethylene and carbon powder, the thickness of the self-supporting microporous membrane is 30 to 50 micrometers, the surface of the microporous membrane is coated to preparea catalytic layer to obtain microporous membrane supporting catalytic layers. An enhanced membrane electrode is composed of an anode gas diffusion layer, an anode microporous membrane supporting catalytic layer, a proton exchange membrane, a cathode microporous membrane supporting catalytic layer and a cathode gas diffusion layer. The enhanced membrane electrode is obtained by combination. The enhanced gas diffusion layer prepared by the invention has excellent conductivity and strength and high gas permeability and water conductivity, the micropore distribution is uniform, the membrane electrode is assembled by the microporous membrane supporting catalytic layers and the strength of the membrane electrode is significantly improved, the processing process is simple, the performance of themembrane electrode is good, and the industrial mass production is facilitated.

The invention relates to a target knife utilizing laser surface texture optimization. The target knife comprises a stainless steel target knife body. The surface of the target knife body is provided with optimized surface tissue obtained through laser phase transformation hardening or laser remelting, the superfine hardening tissue is obtained on the surface of the knife body, the knife body surface abrasion resistance and high temperature oxidation resistance are improved, and friction between the knife body and the human tissue is reduced. The stainless steel surface tissue optimization is achieved through laser phase changing hardening or laser remelting, the content is not changed, after laser surface texture hardening, the corrosion resistance, abrasion resistance and high temperature oxidation resistance of the stainless steel knife body surface are remarkably improved, when the knife body enters the human body and is pulled out from organ tissue, friction between the knife body and the human tissue is reduced, and a knife edge becomes smaller, and therefore pain of a patient is relieved.

The invention discloses calcium phosphate bone cement with collapse resistance. The calcium phosphate bone cement is composed of calcium phosphate bone cement and galactomannan vegetable gelatin, wherein the weight of the galactomannan vegetable gelatin accounts for 0.3-3.0% of that of the calcium phosphate bone cement. The invention further discloses a preparation method and an application of the calcium phosphate bone cement with collapse resistance. According to the invention, the galactomannan vegetable gelatin is successfully applied to the calcium phosphate bone cement for the first time, meanwhile, the requirements of significantly improving the collapse resistance of the calcium phosphate bone cement, keeping the original curing characteristics of the calcium phosphate bone cement, and guaranteeing that hydration products have no large influences on the mechanical properties of the calcium phosphate bone cement are met, and the success rate of the operation is effectively improved. According to the calcium phosphate bone cement, as well as the preparation method and application thereof, the novel medical value of the galactomannan vegetable gelatin is expanded, and the calcium phosphate bone cement has relatively wide application prospects.

The invention belongs to the field of mask protection, and particularly discloses a recyclable mask, a preparation method and a recycling method. The recyclable mask comprises mask fibers serving as a substrate and a highly-compact nano-film which is formed by complexing polyphenol metal and wraps the surface of the substrate. Compared with masks prepared by other improvement means such as adding an activated carbon layer and a graphene layer and installing an air filter, the mask does not change the original shape of the mask, normal wearing is not affected, meanwhile, the structure and components of original fibers of the mask are not changed, and the air permeability is also improved. Neither polyphenol nor metal ions can be fixed on the mask fibers independently, through compounding and two times of spraying, the polyphenol and the metal ions form a high-density nano-composite on the surface of the mask fibers, and the adhesivity and the antibacterial property of the nano-composite enable the mask to have higher particle interception efficiency and sterilization, antivirus and inactivation capabilities.

The invention discloses a heat treatment method for improving impact resistance of 6xxx series aluminum alloy in the T6/T651 state. The method comprises the steps of rolling a cast ingot; determiningthe lowest temperature X DEG C required by the complete recrystallization annealing of rolled material; adopting the temperature of X-470 DEG C to carry out annealing treatment on the rolled materialfor 0.5-6 hours; carrying out solid solution quenching; and carrying out artificial aging. According to the heat treatment method for improving impact resistance of the 6xxx series aluminum alloy in the T6/T651 state, on the premise that alloy components are not changed, impact resistance of the 6xxx material in the T6/T651 state can be remarkably improved through a special heat treatment method.

The invention discloses an ultrasonic potential activating method for improving electric casting metal film base interface bonding strength. The method comprises the following steps: substrates are pretreated; photoresist microstructures are prepared on the substrates; the metal substrates with micro electric glue film molding cavities are fixed on cathode back plates; the cathode back plates, anodes and electric casting liquid are put in an electric casting tank; the electric casting tank is put in an ultrasonic cleaning machine for water bath heating; ultrasonic vibration is applied to activate oxide layers on the surfaces of the substrates; the application of ultrasonic vibration is stopped for electric casting to obtain electric casting layers; and after electric casting, the metal substrates are taken out for flushing by de-ionized water, and are dried by using nitrogen to remove the micro electric casting glue film molding cavities on the metal substrates to obtain electric casting layers. The oxide layers of the substrates are activated through ultrasonic potentials to improve the electric casting metal film base interface bonding strength, so that the micro metal device manufacturing yield can be improved, the service life of micro metal devices is prolonged, the application range of a micro electric casting technology is widened, and the characteristics of simplicity,high efficiency and economy are achieved.