31results about How to "Change nature" patented technology

According to the modified fiber mining filling material and the preparation method thereof provided by the invention, through a dual modification technology of plasma treatment and a silane coupling agent, the uniform dispersity of fibers in a cementing agent is enhanced, and the properties such as rapid hardening, early strength and compressive strength retention rate of the filling material are remarkably improved. The filling material comprises cement clinker, solid waste, a retarder, an early strength agent, modified fibers, an accelerator, gypsum, a water reducing agent, a suspending agent and other raw materials, the modified fibers are treated through specific steps, surface functional groups are increased, and the compatibility and binding power of the modified fibers and a cementing agent are improved. The filling material disclosed by the invention has the advantages of good transportability, simplicity and convenience in construction, low cost and environmental protection characteristic, conforms to the development trend of green mining industry, is particularly suitable for being applied to mine filling and supporting, and has wide application prospects and social and economic values.

The invention relates to bamboo fiber-based food fresh-keeping packaging paper and a preparation method thereof. The preparation method of the bamboo fiber-based food fresh-keeping packaging paper comprises the following steps: respectively grinding bleached sulfate tender moso bamboo fibers and moso bamboo root fibers, and dispersing and mixing to obtain NBF / BRF mixed pulp; then adding the modified moso bamboo cellulose nanocrystals to obtain NBF / BRF / BNC composite slurry; making paper with pulp, forming, dehydrating and drying to obtain a bamboo paper sample A, uniformly spraying bamboo vinegar on the outer surface of the bamboo paper sample A, and finally performing hot pressing and drying to obtain the bamboo fiber-based food fresh-keeping packaging paper. Bamboo fiber raw materials with different characteristics are used for preparing the packaging paper for food preservation, the bamboo fiber-based food packaging paper is endowed with excellent mechanical strength, barrier property, hydrophobic property and antibacterial and mildew-proof capabilities, and the bamboo fiber-based food packaging paper can be used in the field of packaging materials for fruit and vegetable preservation.

The invention discloses a construction method for controlling large deformation of tunnel soft rock by a mining method, which comprises the following steps of: 1, determining the shape and the size of a tunnel, 2, excavating the tunnel by the mining method, judging an over-excavation construction section and carrying out fixed-interval tunnel over-excavation, 3, backfilling a tunnel over-excavation surface with foam light soil, fourthly, supporting is conducted after foam light soil is backfilled, and a construction face is closed in time; according to the method, through the construction of overbreak and foam light soil backfilling of the tunnel, the property and the structure of surrounding rock are changed, transmission of high ground stress is directly blocked structurally, the effect of controlling large deformation of soft rock is achieved, and a good effect can also be achieved on soft rock mass.

The invention proposes a NiCoAl / C catalyst and application thereof in furfural conversion, belonging to the technical field of biomass conversion. The invention uses furfural as a raw material and NiCoAl / C as a catalyst, and catalyzes furfural to prepare cyclopentanone or tetrahydrofurfuryl alcohol with high selectivity and high conversion rate through simple regulation of the catalyst. Non-precious metal raw materials are used, the raw materials are easy and cheap to obtain, the process is simple, and the invention has good application prospects.

The invention relates to the technical field of rare earth treatment, and in particular to a method for controlling the amount of rare earth added to a rare earth low alloy high-strength and tough steel. The invention obtains an optical image of a composite rare earth inclusion formed by interaction between aluminum oxide and manganese sulfide after adding a rare earth solution through testing. The optical image of the composite rare earth inclusion can accurately determine whether the anti-corrosion performance of the high-strength and tough steel meets the standard, thereby improving the accuracy of the amount of rare earth added to the high-strength and tough steel. The image of the segregated interface of rare earth ions, lanthanum ions and cerium ions can determine whether the wear resistance of the high-strength and tough steel meets the standard, further improving the accuracy of the amount of rare earth added to the high-strength and tough steel. According to the determined amount of rare earth added, an actual rare earth ion penetration quenching and tempering treatment operation is performed on the alloy steel, thereby further improving the accuracy of the amount of rare earth added to the high-strength and tough steel.

The application discloses a method and system for comprehensively utilizing high-magnesium nickel sulfide ore by a low-temperature oxygen-rich method. The method comprises the following steps: obtaining pre-leaching residue by pre-leaching and magnesium removal with high-magnesium nickel sulfide ore as raw material; obtaining activated ore slurry by mechanically activating the pre-leaching residue; and obtaining a nickel-containing leaching solution by low-temperature oxygen-rich leaching of the activated ore slurry. The application has wide application range, is simple and reliable, easy to control, and low in investment cost, and can convert metals into corresponding products, so that high-magnesium nickel sulfide concentrate can be treated at low cost and high efficiency.

The invention relates to a laser cladding ceramic phase composite reinforced iron-based high-entropy alloy coating as well as a preparation method and application thereof. The laser cladding ceramic phase composite reinforced iron-based high-entropy alloy coating comprises high-entropy powder and WC powder, the mass of the WC powder accounts for 1 wt.%-40 wt.% of the mass of the high-entropy powder; the high-entropy powder comprises Fe metal powder, Co metal powder, Cr metal powder, Ni metal powder and Mo metal powder which are arranged in an equal molar ratio. Compared with the prior art, the WC is added into the high-entropy alloy coating to change the structure of the coating, so that the properties of the coating in practical application are changed. The Mo element can promote formation of a sigma phase, a hard net-shaped framework is formed in the material, the grain boundary stability is improved, then the structural stability of the coating is improved, and excessive precipitation of a brittle phase is avoided while carbide distribution is optimized through a proper amount of WC. And the addition of WC can cause the solid solution strengthening effect of the high-entropy alloy, so that the hardness of the coating is improved.

The invention discloses a spinning method for improving washability of a fabric and a preparation method of the fabric, and relates to the technical field of preparation of the fabric, and the spinning method comprises the following steps: pretreating a spinning fiber raw material to remove impurities in the raw material; the pretreated spinning fibers are synthesized into fiber bundles, and the fiber bundles are stretched, so that the fiber bundles are refined and reach the required linear density; in the spinning nozzle, air is utilized to enable the fiber bundles to move along the spiral channel, and the fiber bundles are twisted under the action of centrifugal force; and the fiber bundles are gradually condensed and twisted into newly formed yarns under the action of specific airflow to form yarn cores. According to the spinning method, the fibers form a multi-point crossed entangled structure in the yarns under the action of airflow, so that the friction force among the fibers is enhanced, and the strength and the elasticity of the yarns are improved; the formed yarn has an open structure and has more gaps and channels, so that a path for dye to enter the interior of the fiber is provided, and the dyeing effect of the fabric is better.

The invention relates to a superheated steam device and method for storage and preservation of rice, the superheated steam device comprises a steam generating device and an enzyme deactivation box, the enzyme deactivation box comprises a sealed box body, the top of the box body is provided with a feed port, the bottom of the box body is provided with a discharge port, and a slide way is arranged in the box body to communicate the feed port with the discharge port; the sliding way is composed of a plurality of sliding plates which are fixed in the box body, distributed from top to bottom and sequentially arranged in a Z shape. Through holes with the diameter smaller than that of rice grains are evenly distributed in the sliding plates to form air holes. A plurality of steam inlets are formed in the two sides of the box body, a steam outlet is formed in the top of the box body, the steam inlets of the box body are connected with a steam outlet of the steam generating device through pipelines, and the steam outlet of the box body is connected with a steam recycling opening of the steam generating device through a pipeline; the method can effectively kill microorganisms, pests and oxidase in the rice and effectively prolong the storage life of the rice, so that the rice can safely live in summer.

The invention discloses a negative thick film photoresist for advanced packaging, the formula of which includes: 40-60 parts by mass of solvent, 30-50 parts by mass of acrylic resin, 3-10 parts by mass of initiator, 10-30 parts by mass of cross-linking agent and 500-1500ppm of additives; the viscosity of the photoresist is 3000-5000mPa.s; the molecular weight of the acrylic resin is 6000-15000, preferably 8500-12000. The invention increases the coating thickness of the photoresist and improves the uniformity of the coating; at a thickness of 110um, exposure and development are performed, followed by electroplating of copper, nickel, and selenium silver, the photoresist surface is intact and not cracked, the photoresist is easy to remove after electroplating, and the angle of the electroplated copper column is steep.

The invention provides a ship anchor dynamic testing device, and relates to the technical field of ship anchor testing, and the ship anchor dynamic testing device comprises an installation supporting part which is provided with a test conveying member; the test conveying piece is used for conveying sandy soil; a conveying device is mounted on the mounting supporting part; the conveying device is used for circularly conveying the sandy soil on the test conveying piece; a stone recycling part is mounted on the side surface of the mounting supporting part; the stone recycling part is used for screening and recycling sandy soil, the sandy soil can be continuously conveyed to provide reverse acting force for the ship anchor, the testing mode of sandy soil conveying is adopted, more space can be saved, meanwhile, testing work can be continuously conducted, testing efficiency is guaranteed, and the property of the sandy soil can be flexibly adjusted. The problems that the site needed by the mode that an existing ship anchor dynamic testing device pulls an anchor to test the anchoring quality is too large, and back-and-forth conveying of the anchor is not flexible enough are solved.

The invention discloses an aqueous zinc ion battery electrolyte, a preparation method thereof and an aqueous zinc ion battery, and belongs to the technical field of new energy. The aqueous zinc ion battery electrolyte comprises phthalic dicarboxaldehyde and a zinc salt. The addition of the o-phthalaldehyde does not change the property of the electrolyte, the cycle stability of the aqueous zinc ion battery electrolyte is improved by modifying the interface of the zinc negative electrode, and the zinc negative electrode has better corrosion resistance in the aqueous zinc ion battery electrolyte. In addition, the battery prepared from the aqueous zinc ion battery electrolyte has good cycling stability, high electrochemical reversibility and durability. The method has important guiding significance for further development and application of the aqueous zinc ion battery.

The invention relates to the field of natural gas decarburization, and discloses an absorption solvent for natural gas decarburization as well as a preparation method and application thereof. Wherein the absorption solvent comprises a main agent, an activating agent and a defoaming agent, the main agent is selected from N-methyldiethanolamine, the activating agent is selected from one or more of diethanol amine, triethanolamine, methyl monoethanolamine, piperazine, hydroxyethyl piperazine, 2-piperidine ethanol and tert-butylamino diethanol amine, and the defoaming agent is selected from one or more of diethanol amine, triethanolamine, methyl monoethanolamine, piperazine, hydroxyethyl piperazine, 2-piperidine ethanol and tert-butylamino diethanol amine. The defoaming agent is a composite defoaming agent consisting of dimethyl silicone oil, hydrophobic silicon dioxide and dimethylformamide. The stability of the decarburization absorption solvent for natural gas decarburization is guaranteed, and a guarantee is provided for normal and stable operation of a decarburization system.

The invention discloses shortening with good shortening property and a preparation method and a use method thereof, and belongs to the technical field of shortening preparation, the shortening comprises beta'crystal form grease, 10%-20% by mass of an oil-in-water emulsifier, 5%-10% by mass of fatty acid propylene glycol ester and 5%-10% by mass of vital gluten. According to the invention, the dough is good in crispness, the elasticity of the dough is not influenced by the addition of the shortening, the fixation of grease in the shortening on starch is reduced, the water absorption of the starch is improved, and the influence of fixation on subsequent starch gelatinization is avoided.

The invention discloses a treatment method suitable for dicyclopentadiene cracking kettle residues, and belongs to the technical field of chemical engineering. According to the invention, the specific auxiliary agent is introduced into the kettle residue, and the properties of the kettle residue can be effectively changed in the mixing and heating process of the specific auxiliary agent and the kettle residue, so that the kettle residue falls off from the inner wall of the reaction kettle, the flowability of the kettle residue is improved, and the kettle residue can be smoothly removed; the auxiliary agent with a specific structure not only plays a role of a solvent, but also permeates into the cross-linked chain structure of the polycyclopentadiene through the intermolecular force, so that the flowability of the molecular chain is promoted, a certain chemical reaction possibly exists between the auxiliary agent and the polycyclopentadiene, and the polycyclopentadiene is promoted to fall off from the kettle wall by changing the chemical structure of the auxiliary agent. On the basis, the polycyclopentadiene kettle residue can be completely removed under the condition of ensuring the treatment cost by limiting the use amount of the auxiliary agent and the reaction temperature.

The utility model belongs to the field of equipment for modification experiments, and particularly relates to a modification device for coarse cereal experiments, which comprises a barrel and a screw arranged in the barrel, and a group of adjusting plates arranged at intervals along the axial direction of the barrel are arranged in the barrel. The adjusting plate is located between the barrel and the screw and has the freedom degree of radial movement along the barrel by means of a telescopic assembly, the telescopic assembly comprises a push rod fixedly connected with the barrel by means of a mounting frame, a hinge rod, a transverse moving block and a longitudinal moving block fixedly connected with the adjusting plate by means of a first connecting rod penetrating through the barrel, and the two ends of the hinge rod are hinged to the transverse moving block and the longitudinal moving block correspondingly; according to the modification device, the screw does not need to be frequently replaced, different pressures can be applied to coarse cereals in the barrel by adjusting the gap between the adjusting plate and the screw, the coarse cereals are modified to different degrees, and the screw matched with the coarse cereals is rapidly determined.

The invention discloses a high-fastness dye composition and a preparation method thereof, and relates to the field of dyes, the high-fastness dye composition comprises the following raw materials by weight: 40-60 parts of a dye monomer A; 10 to 20 parts of a dye monomer B; 0-20 parts of a dye monomer C; 10 to 40 parts of dye monomer D; 10 to 35 parts of dye monomer E; 10 to 35 parts of dye monomer F; 10 to 20 parts of modified sodium lignin sulfonate; 2-5 parts of a surfactant; 3-6 parts of a dispersing agent; the modified sodium lignin sulfonate is prepared from the following raw materials: sodium lignin sulfonate, chitosan, isopropanol, chloroacetic acid and durian shell powder. The dye composition has the effect of improving the washing fastness of the dye composition.

The present invention relates to an endoscope system, which includes a computer system and a height display and a handheld portion. The handheld portion includes a reusable handle portion and a single-use portion configured to be discarded after a single use. The single-use portion includes a straight elongated cannula having an imaging module and an illumination module at its distal tip. The imaging module is mounted so that its direction of view (DOV) is at an oblique angle to the main longitudinal axis of the cannula.

The invention provides an efficient composite sludge dewatering conditioner and a preparation and use method thereof, and belongs to the technical field of sludge treatment agents, the sludge dewatering conditioner comprises poly dimethyl diallyl ammonium chloride, a polyferric sulfate solution, sodium percarbonate particles and slag porous particles; the polymeric ferric sulfate solution is a liquid with the effective iron content of 6-16%; the poly dimethyl diallyl ammonium chloride and the polymeric ferric sulfate solution are subjected to a mixed reaction under the heating condition according to the weight ratio of 1: (12-20), and a copolymer of poly dimethyl diallyl ammonium chloride and polymeric ferric sulfate is obtained; a copolymer is generated through a mixing reaction, sodium percarbonate particles and slag porous particles are added while stirring is conducted, and a finished product is obtained after sufficient and uniform mixing is conducted. The sludge water content can be reduced, the sludge increment is small, the use method is simple and convenient, the volume and the amount of the sludge are greatly reduced, the cost is low, and the method is environment-friendly.

The invention discloses a method for preparing a fertilizer on the basis of ultrafiltration pretreatment of proline fermentation liquor, and relates to the technical field of fertilizer preparation, and the method comprises the steps of proline fermentation liquor pretreatment, nutrient substance blending, fermentation waste liquor pretreatment, liquid fertilizer preparation and quality detection. Various enzymes react with organic substances in the fermentation liquor, the cellulase can decompose polysaccharide substances such as cellulose in the fermentation liquor and convert the polysaccharide substances into micromolecular saccharides which are more easily absorbed by plants, and the protease can hydrolyze protein and release nutritional ingredients such as amino acid; the amylase can decompose carbohydrates such as starch into monosaccharides such as glucose, the above reactions can improve the nutrient content and the bioavailability of the fermentation liquor, and the three groups of filtering devices are used for filtering the proline fermentation liquor in sequence, so that impurities with different particle sizes can be effectively removed.

The invention relates to the technical field of defoaming, and particularly discloses a high foam inhibition type defoaming agent and a preparation method thereof. The invention relates to a high foam inhibition type defoaming agent, which is prepared from the following raw materials in parts by weight: 100 to 150 parts of organic silicone oil; 10 to 20 parts of capric triglyceride; 10 to 20 parts of modified quercetin; 5 to 10 parts of nano silicon dioxide; 1-5 parts of a surfactant; 1-5 parts of a dispersant; 1-5 parts of an emulsifier; 30 to 50 parts of micro-nano bubble water; 30 to 50 parts of deionized water; the modified quercetin is obtained by modifying quercetin through ethylene oxide. The defoaming agent provided by the invention can be used for defoaming treatment in various industrial applications, and has efficient defoaming performance and foam inhibition performance.

The invention provides an acidic zinc-plated trivalent chromium black passivator as well as a preparation method and an application method thereof, and relates to the technical field of electrochemical deposition. The acidic zinc-plating trivalent chromium black passivator comprises a component A and a component B with specific composition, the component A comprises a trivalent chromium compound, oxalic acid, sodium hydroxide, nickel sulfate, cobalt sulfate, citric acid and water, and the component B comprises thiosemicarbazide hydrochloride, cystine and water. And the corrosion resistance of the passivation layer is good.

The invention relates to a long-acting slow-release goose down anti-mite treatment process, and relates to the technical field of down feather treatment.The long-acting slow-release goose down anti-mite treatment process comprises the following steps that S1, anti-mite treatment liquid is dispersed in an ethanol solution with the mass being 10-12 times that of the anti-mite treatment liquid and the volume fraction being 75%, then nanoscale nacrite powder is mixed and evenly stirred, the mixture is heated to 60-70 DEG C, and anti-mite nano-emulsion is obtained; s2, uniformly spraying an anti-mite nano-emulsion onto the dried goose down, and then drying; s3, repeating the step S2, and spraying at least two layers of anti-mite nano-emulsion on the goose down; wherein the anti-mite treatment liquid is prepared from the following raw materials in parts by weight: 8 to 10 parts of tea tree essential oil, 8 to 10 parts of rosemary essential oil, 3 to 5 parts of microalgae extract, 2 to 3 parts of snake oil extract, 10 to 15 parts of bamboo vinegar, 0.5 to 1 part of emulsifier, 0.5 to 1 part of thickener and 40 to 50 parts of deionized water. The anti-mite treatment liquid is prepared from the microalgae extract and the snake oil extract, the anti-mite effect of the treated goose down is obviously enhanced, and the goose down has the characteristic of long-acting slow release performance.

The invention discloses a preparation method of water vapor modified chemical capacitance carbon, which comprises the following steps: (1) taking an intermediate of current commercial chemical capacitance carbon, namely activated carbon which is not calcined at a high temperature, as a carbon material, putting the carbon material into a corundum boat, and putting the corundum boat into a tubular furnace; (2) introducing inert gas into the tubular furnace, heating to 250 DEG C at the heating rate of 10-15 DEG C / nim, switching the inert gas into water vapor with the flow of 0.15-0.35 L / min and the constant heating rate, continuously heating to 850-950 DEG C, and keeping the temperature for specified time; and (3) naturally cooling to 750 DEG C, switching to inert gas, continuously cooling to room temperature, and taking out to obtain the modified capacitor carbon. The capacitor carbon modified by the chemical carbon has the properties of the capacitor carbon prepared by a physical method, and the capacitor assembled by the carbon is resistant to high temperature and stable in performance.

The invention discloses a preparation method of starch / garlic essential oil self-assembled particles capable of achieving targeted delivery. The preparation method is characterized in that the starch self-assembled particles are prepared by combining pre-gelatinized starch with a high-speed shearing method. The preparation method comprises the following steps: pre-gelatinizing corn starch, cooling to room temperature, mixing with garlic essential oil, carrying out high-speed shearing treatment under certain conditions, and freeze-drying to obtain a crude product of starch / garlic essential oil self-assembled particles; and washing the crude product with alcohol, centrifuging to obtain a solid sample, drying, grinding and sieving to obtain the starch / garlic essential oil self-assembled particles capable of targeted delivery. Determining that the self-assembled particles are V-shaped crystals through X-ray diffraction; an in-vitro gastrointestinal tract digestion slow release simulation experiment shows that the garlic essential oil can be effectively delivered to the intestinal tract by the self-assembly particle, so that the accumulative release condition in the digestion stage of the stomach and the intestinal tract is realized. The targeted delivery starch / garlic essential oil self-assembled particle provides a new thought for development of a garlic essential oil delivery carrier.

The invention relates to the technical field of mixed material production equipment and devices, and discloses a road waste asphalt admixture reprocessing production device and a processing method.The road waste asphalt admixture reprocessing production device comprises a work setting frame, a grinding assembly and a reprocessing assembly, two sets of supporting setting bases are arranged on a panel of the work setting frame at intervals, and the grinding assembly is arranged on the supporting setting bases; and an asphalt recycling device is arranged on the left side of the work setting frame, a reprocessing assembly is arranged below the work setting frame, and a stirring assembly is arranged on the left side of the discharging assembly. The reprocessing production device is used as an operation assembly, working parameters of related parts are set according to corresponding grinding and material mixing production requirements, grinding, screening, reagent adding and material mixing treatment are carried out on preliminarily-crushed asphalt fragments, finally, mixed materials are fully heated, the mixed materials are stimulated to react, and therefore the reprocessing production efficiency is improved. The mixed asphalt generates good adhesion, the property of the waste asphalt is changed, and the waste asphalt can be reused after being treated.

The invention discloses a method for preparing a silicon carbide material from coal gasification slag, and belongs to the field of solid waste recovery. According to the scheme, the method comprises the steps that firstly, the coal gasification slag is pretreated, then the pretreated coal gasification slag is subjected to acid leaching, water washing, suction filtration and drying, Joule heating treatment is conducted, and silicon carbide is obtained after calcination; in the Joule heating treatment, the discharge voltage is set to be 120V-150V, and the number of discharge times is 1-5. According to the method, the coal gasification slag is subjected to Joule heating treatment, so that the Joule heating reaction time each time is extremely short, the energy consumption is greatly reduced, the reaction time is sharply shortened, and the technical problem of high energy consumption caused by long reaction time when a silicon carbide material is prepared through traditional carbon thermal reduction in the prior art is solved.

The present application relates to the field of microorganisms. Specifically, the invention relates to application of a regulator in regulating the methylation level of prokaryotic nucleic acid and application of the regulator in preparing a prokaryotic culture medium or food. The invention further relates to a method for regulating the methylation level of prokaryotic nucleic acid and a method for changing the performance of bacteria (for example, improving the resistance of the bacteria to bacteriophages, increasing the survival rate of the bacteria and changing fermentation products of the bacteria).

The invention provides an ultrasonic-assisted device for capturing CO2 from magnesium ore pulp, which belongs to the technical field of gas collection and comprises a main pipeline, and a carbon dioxide gas tank, a gas flow controller, a three-way valve, an adsorber, an ultrasonic generator and a gas analyzer are sequentially arranged on the main pipeline; the magnesium ore powder is used as a raw material, the raw material source is rich, the preparation process is simple, and the cost is low; an ultrasonic technology is introduced, liquid drops are broken through ultrasonic waves, the specific surface area of ore pulp is increased, the property of the ore pulp is changed, and the carbon dioxide trapping capacity is improved.

The invention belongs to the technical field of agricultural mulching films, and relates to a degradable mulching film and a preparation method thereof. The invention provides a degradable mulching film. The degradable mulching film is prepared from polypropylene, a humectant, an emulsifier, a stabilizer and a modified filler, a preparation method of the modified filler comprises the following steps: mixing kapok fiber, nano silicate and beryllium oxide, adding a modified hydrogen-containing silicone oil cross-linking agent, stirring and reacting at 50-60 DEG C for 3-5 hours, cleaning and drying, thereby obtaining the modified filler. The modified hydrogen-containing silicone oil cross-linking agent is obtained by modifying a hydrogen-containing silicone oil cross-linking agent with vinyltriethoxysilane and distearoyloxy isopropyl aluminate. The degradable mulching film disclosed by the invention not only has very high degradability, but also can promote plant growth.