52results about How to "Adjustable ratio" patented technology

The invention provides a carbon-doped transition metal oxide composite material, a preparation method and an application thereof. The preparation method comprises the following steps: adding sodium alginate into deionized water, stirring to obtain transparent viscous liquid; Adding a sulfur and nitrogen source into a transition metal solution and stirring to obtain a homogeneous solution; Adding transparent viscous liquid into homogeneous solution dropwise, stirring, standing, and obtaining tubular gel hydrogel; Filtering, washing and freeze drying the tubular gel hydrogel to obtain a xerogel;Carbonizing the xerogel in an inert atmosphere to obtain pyrolytic clinker; The pyrolysis clinker is heat treated in air atmosphere, then washed and dried to obtain the doped carbon-based transitionmetal oxide composite. The method has the advantages of simple process, easy scalization, good catalytic activity and electrical conductivity, and can be used as a bifunctional catalyst for the positive electrode of the air electrode of the zinc-air battery.

The invention relates to a cement adhesive with low energy consumption and super-early strength for binding of an insulator and a preparation method thereof. The cement adhesive is prepared from the following raw materials of quick-hardening cement, common cement, micro-silicon powder, binding quartz sand, a composite admixture and water, wherein the composite admixture consists of a retarder, a polycarboxylate superplasticizer, an early strength agent, a tackifier and a defoamer according to a ratio. The cement adhesive has the beneficial effects that (1) the production efficiency of the insulator is greatly improved by the compounding of the quick-hardening cement and the common cement; (2) the strength stability, anti-seepage property and durability are excellent; (3) by adopting the proper tackifier, the water sensitivity is decreased, the viscosity of the cement adhesive is adjusted, and the operability of the cement adhesive is obviously improved; (4) the binding time of the adhered insulator is greatly shortened, and the utilization rate of a curing tank is improved; (5) by adopting the three-step mixing method, the ratio of premixture to the quick-hardening cement is properly adjusted, so as to maintain the actual condensing time and operation time of the cement adhesive.

The invention relates to a preparation method of a zinc-aluminum alloy-base composite material, in particular to a preparation method of a carbon nano tube enhanced zinc-aluminum alloy-base compositematerial. The aim is to solve the problems that according to an existing method, when carbon nano tubes are added into zinc-aluminum alloy melt, carbon nano tubes are not uniform in dispersion, and the mechanical properties of the prepared carbon nano tube enhanced zinc-aluminum alloy-base composite material are poor. The method includes the steps that 1, CNTs-Zn composite powder is prepared; 2, aCNTs-Zn intermediate material is prepared; 3, smelting is conducted, so that the carbon nano tube enhanced zinc-aluminum alloy-base composite material is obtained. The carbon nano tube enhanced zinc-aluminum alloy-base composite material can be obtained.

The invention provides a preparation method for a nano-composite of carbon-coated iron and iron carbide. The method comprises the following steps: (S1) mixing one type or more than one types among citric acid coordinated iron or EDTA coordinated iron with one type or more than one types among cyanoguanidine and melamine to form a first precursor; (S2) treating the first precursor with first high-temperature pyrolysis under an inert atmosphere or a reducing atmosphere to obtain a primary composite material; (S3) mixing the primary composite material with one type or more than one types among cyanoguanidine, melamine and hexamine to form a second precursor; and (S4) treating the second precursor with secondary high-temperature pyrolysis under the inert atmosphere or the reducing atmosphere,wherein the temperature of the first high-temperature pyrolysis is higher than the temperature of the secondary high-temperature pyrolysis. In the method provided by the invention, through coordination effects of common and cheap organic acids and assistant effects of cyanamide compounds, a use dosage of low-efficiency cyanamide compounds is effectively reduced, and generation of CNT coated metalby-products is avoided. Through two low-temperature pyrolysis courses, defects of the composite are effectively repaired.

The invention relates to a non-loaded type deep-hydrogenation catalyst and a preparation method thereof, and belongs to the field of catalyst preparation. The catalyst takes Ni and Mo as main active components and one or more of Zr, Zn, Al and Fe as an auxiliary active component; through BET-method determination, the catalyst has a mesoporous structure, and has the mesoporous diameter of 5.0-7.0 nm and the specific surface area of 100-300 m<2>/g. With combination of characteristics of simple operation of a precipitation method and catalyst thermal stability improvement of a hydrothermal synthesis method, the defects of long period, low metal utilization rate and high cost are overcome, the obtained catalyst not only has more metal active sites, but also has the hydrothermal stability improved. In the preparation process of the catalyst, no other binders are used, the preparation process is simplified, and the cost of the catalyst is reduced.

The invention discloses a method for preparing a composite crushing plate with a columnar hard phase. A gear rack of the composite crushing plate with the columnar hard phase prepared by the method is formed by compounding a high hardness columnar hard phase and a high tenacity base metal. The method comprises the following steps: weaving alloy powder core materials into an alloy powder core material framework according to the shape of the gear rack on the crushing plate; fixing the framework on the crushing plate through binding or welding; through a casting method, performing in situ reaction on the alloy powder core materials to generate the columnar hard phase by using the high temperature of melted base molten metal; and performing the metallurgical combination of the hard phase and a base metal interface to form a high wear resistant high tenacity composite material on the gear rack of the crushing plate. The composite crushing plate prepared by the method has the advantages of high wear resistance, high tenacity, high tensile strength, high compression strength and the like. The method has the characteristics of small equipment input, low cost, simple operation and the like, and can be widely applied to various jaw type crushers.

The invention belongs to the field of machine-made sandstone equipment manufacturing and provides a high-quality granite machine-made sandstone aggregate production line. The production line adopts acrushing and screening process of jaw crusher coarse crushing, desilting and screening, pre-screening, cone crusher secondary intermediate crushing, vertical shaft impact crusher shaping and coarse aggregate finished product screening at the front end, and adopts a floor type sand making process at the rear end. According to the production line, technical means such as a computer network, wirelesscommunication, spatial positioning and geographic information are comprehensively utilized, monitoring and control information of operation of production line equipment compositions is integrated into a set of intelligent monitoring and control system, dynamic management and control of the sandstone aggregate production line are achieved, and controllability and flexibility of the whole production process are achieved. By adopting the production line, firstly, the high quality of the finished aggregate can be ensured; secondly, green and environment-friendly production process can be realized; and thirdly, the intelligent process control can be realized, and the controllability and the flexibility of the whole production process are ensured.

The invention discloses an instant compound seasoning suitable for preparing mixed rice noodles. The instant compound seasoning is prepared from the following components in parts by weight: 80-100 parts of edible salt, 15-30 parts of chicken essence, 1-2 parts of starch, 1-3 parts of maltodextrin, 0.5-1 part of disodium 5'-ribonucleotide, 1-10 parts of ground pepper, 1-30 parts of chilli powder and 1-5 parts of dried ginger powder. Since the instant compound seasoning disclosed by the invention contains insoluble ground pepper, chilli powder and dried ginger powder, the obtained particles are looser with more pores and are dissolved in water faster; and with the salty, fresh, hemp, spicy, aromatic and other tastes, the workload of preparing mixed rice noodles is reduced, and the preparation efficiency of mixed rice noodles is improved.

The invention discloses a method and device for plating cladding magnetic material on a microorganism surface. The method comprises the following steps: (1) template pretreatment; (2) template conduction treatment; (3) cladding of magnetic material; (4) dehydration treatment; and (5) vacuum drying. The device comprises a plating tank, a diaphragm, a vibrator, a stirrer, an electrode, a circulation pump and the like. The plating tank is divided into a cathode tank and an anode tank by a round diaphragm; a multi-layer cylindrical copper grid electrode is arranged in the cathode tank, and the top of a fixture of the copper grid electrode is connected with the vibrator; a mechanical stirrer is arranged at the centre of the copper grid electrode; a bracket is arranged at the bottom of the anode tank, and a six-hole cylindrical graphite electrode is fixed on the bracket; and the circulation pump is connected with the two sides of the anode tank through two pipelines with valves. Through the invention, the materials are easily available, the process is stable, microorganism coalescence in the plating process can be effectively avoided, and the original body characteristics of the microorganism are maintained.

The invention relates to a preparation method for adjusting the chemical ratio of a Cu2ZnSnS4 film through two times of sulfuration heat processing. The preparation method is characterized in that magnetron sputtering is carried out on a Cu2ZnSnS4 prefabricated film through the single Cu2ZnSnS4 target, two times of sulfuration heat processing is carried out on the prefabricated film, and the high-quality Cu2ZnSnS4 film poor in copper and rich in zinc is obtained. The corresponding band gap is changed from 1.42eV to 1.52eV. The preparation method for adjusting the chemical ratio of the Cu2ZnSnS4 film through two times of sulfuration heat processing is simple in process, low in cost, convenient to operate, high in repeatability and favorable for industrialization development of stacked solar cells with Cu2ZnSnS4 absorption layers.

The invention relates to a paper cone in a loudspeaker. A carbon fiber cloth and paper pulp direct papermaking composite cone is formed by impregnating a carbon fiber woven fabric with resin; then placing the carbon fiber woven fabric on a papermaking mold, and drying the carbon fiber woven fabric together with the papermaking wet paper pulp to form a composite paper cone. Further, the weight ratio of the carbon fiber woven fabric to the paper pulp is 1:1 to 1:1.5. The invention relates to a composite cone composed of carbon fibers and paper pulp. The paper pulp penetrates into the carbon fiber cloth and interweaves with the carbon fiber cloth. Thus, glue bonding is not required and good firmness is achieved. The paper cone has both the rigidity of the carbon fibers and the damping of paper fibers. The paper pulp ratio can be adjusted to achieve an effect with less distortion and realistic reproduction of various sounds.

The invention discloses an intelligent LED lighting system for duckling culture. The intelligent LED lighting system comprises a master control module (1) and also comprises an LED driving module (2), an LED lamp group (3), an environment detection module (4), an early warning module (5) and an interaction module (6), wherein the LED driving module (2) is connected with an output end of the master control module (1), the LED lamp group (3) is connected with the LED driving module (2), the environment detection module (4) is connected with an input end of the master control module (1), the early warning module (5) is connected with an output end of the master control module (1), the interaction module (6) is connected with an output end of the master control module (1), the LED driving module (2) adopts a buck type DC/DC converter LM3402 to design an LED driving circuit so that the light brightness and intensity of the LED lamp group (3) are changed, the LED lamp group (3) comprises red LED lamps and blue LED lamps which are in 15 rows and 16 lines, the proportion of the red lamps and the blue lamps is 7:1, moreover, five white LED lamps are jointly used for generating a light condition with a color temperature range of 4,000-5,000K for duckling culture.

The invention discloses a freezing salt separation system and a freezing salt separation method. The freezing salt separation system comprises a precision pretreatment device, a first reverse osmosisdevice, an electrodialysis device, a carbon remover, a freezing crystallization device, a nanofiltration device, a sodium chloride evaporation crystallization device, an organic matter removal device,a second reverse osmosis device and a miscellaneous salt evaporation crystallization device, wherein the precision pretreatment device, the first reverse osmosis device, the electrodialysis device, the carbon remover, the freezing crystallization device, the nanofiltration device, the sodium chloride evaporative crystallization device and the carnallite evaporative crystallization device are connected in sequence; and the second reverse osmosis device and the organic matter removal device are sequentially connected with the electrodialysis device. The freezing salt separation system and method can achieve the purposes of being short in technological process, stable in operation, relatively mild in operation condition, low in investment cost, low in final miscellaneous salt rate and free of emission.

The invention discloses a community detection method based on backbone network extension, which is used for rapid community discovery in large-scale complex networks. The present invention mainly includes: use the improved PageRank algorithm (WP) based on node weight to calculate the input network, select the node whose WP value is greater than the threshold as the backbone node of the network; traverse the whole network, extract the backbone node and connect any two backbone nodes The edges of the nodes constitute the backbone network; the hierarchical clustering algorithm is run in the backbone network to obtain the backbone community structure; the extension algorithm is used to extend the backbone community to the entire network to obtain the community structure of the overall network. The invention narrows the operating range of the hierarchical clustering algorithm to the backbone network, avoids clustering in the whole network, has relatively small time complexity, and is suitable for community discovery in large-scale complex networks. In addition, the present invention can quickly capture the change details of the overall community by tracking the change of the backbone community, and is suitable for community discovery in a rapidly evolving network.

The invention relates to the technical field of preparation of bimodal concrete gradation powder and particularly relates to a preparation method of bimodal concrete gradation zirconium powder. The method comprises the following steps of heating zircon serving as raw sand, carrying out rapid cryogenic treatment to form a large number of micro cracks in the raw sand so as to increase the crushing speed of the raw sand in a ball milling process, and mixing the raw sand with raw sand free of rapid cryogenic treatment and carrying out ball milling treatment to obtain the zirconium powder with bimodal particle size distribution. According to the preparation method of the bimodal gradation zirconium powder, the peak particle size of the fine bimodal gradation zirconium powder is 7 micrometers to14 micrometers, and the peak particle size of the coarse bimodal gradation zirconium powder can be controlled by adjusting a raw sand particle size and ball milling time; and meanwhile, the process is simple, a conventional heating furnace and a conventional ball mill are required, the investment is small, the production cost is low, and the bimodal gradation powder suitable for different conditions can be obtained through raw sand and the control of process parameters.