994results about How to "Produce pollution" patented technology

The invention relates to a nanoparticle-added composite foam system used for an oil and gas field and a preparation method thereof. The composite foam system comprises components of, by mass, 0.3 to 0.5 parts of an anionic surfactant, 1 to 1.5 parts of modified silica nanoparticles, 0.03 to 2.3 parts of counter-ion salt, and 100 parts of water. The method comprises mixing the abovementioned components according to ratio, stirring by using a magnetic stirrer, standing, and then rapidly stirring to form well stable foam using a Waring Blender way. According to the composite foam system, the produced foam has a longer half life than that of foam stabilized by ordinary surfactant, and a larger start-foaming volume than that generated by adding a foam stabilizer The system has advantages of simple formula and preparation technology and good salt tolerance and temperature tolerance, can adapt to complex oil reservoir condition underground, does not pollute stratum, is capable of effectively blocking large channels and improving sweeping efficiency, and thus has good application prospects in oil field exploitation, especially in foam displacement.

The invention relates to a ceramic electric pressure cooker which comprises an outer casing, a ceramic vessel, a cover, a nylon ring, a middle loop, a sealing ring, an electric heating device, an anti-blocking sleeve, a safety valve and a metal sleeve; wherein, the sealing ring is arranged in the cover and is used for sealing the cover and the ceramic vessel; the anti-blocking sleeve is arranged in the cover; the safety valve is arranged on an air outlet pipe of the anti-blocking sleeve; and the metal sleeve is arranged in the outer casing and is buckled with the cover. The electric heating device is arranged in the metal sleeve and at the bottom. A supporting edge which bends outwards is arranged at an opening of the metal sleeve. The middle loop is fixed on the metal sleeve. The ceramic vessel is arranged in the metal sleeve. A folded edge which is folded outwards is arranged at the opening. The invention is characterized in that the ceramic electric pressure cooker also comprises a buffer washer which is arranged between the supporting edge and the folded edge of the ceramic vessel and leads to the close matching of the supporting edge and the folded edge of the ceramic vessel. Thus, the ceramic vessel can be suspended on the metal sleeve. As the vessel is made of ceramic, chemical reaction between the vessel and foods in the cooker can be avoided. The ceramic electric pressure cooker has the advantages of innocuity, safe and reliable using, pollution-free on the environment, environmental protection, energy saving and integration with soil. Compared with a common ceramic electric pressure cooker, the heating time is shortened.

The invention relates to a preparation technique of a wood plastic composite material, in particular to a method for preparing a wood plastic composite material by using modified wood powder and waste plastics. The method is characterized in that: (1) discarded agriculture and forestry wastes are crushed, milled and dried, and three different surface modification agents are added in sequence and mixed with the waste power one after another in a high-speed mixer to produce the modified water powder; and (2) waste plastics are washed and crushed into granules with the grain size of 2mm to 12mm and then dried; the modified waste powder, the waste plastic granules, a lubricant, a vesicant and a blowing promoter are mixed by weight percentage and put into the high-speed mixer for high-speed mixing and then cooled to the temperature lower than 55 DEG C for discharging so as to prepare a special premix. The composite material has super high strength and anti-bending and anti-impact capacity, wherein, the obvious enhancement of the anti-impact strength causes the great enhancement of the processing capacity of the product, thus causing products to meet different demands and ensuring an extremely wide application range.

The invention discloses a hydrogen container hydrogen environment fatigue test system. One end of a high pressure hydrogen container is respectively communicated with a test container and a low pressure hydrogen container through an explosion protection pressure reducing valve, a flow regulating control valve, a first normal open stop valve and a test container depressurizing valve; the low pressure hydrogen container is communicated with the other end of the high pressure hydrogen container through a booster pump; a pressure sensor and a cycle recording device are arranged between the first normal open stop valve and an atmospheric valve; the normal open stop valve, a pressure display and a standard pressure gauge are arranged between the test container and the normal open stop valve; one path of an automatic control system operation console is respectively electrically connected with the booster pump and the pressure gauge through an excessive pressure controller; the other path of the automatic control system operation console is electrically connected with the atmospheric valve and the test container depressurizing valve. The high pressure hydrogen in the high pressure container is charged into the test container through the explosion protection pressure reducing valve and the flow regulating control valve, the explosion protection pressure reducing valve is closed when a set pressure is reached, the test container depressurizing valve is opened after maintaining the pressure for a while, and the hydrogen is depressurized into the low pressure container to complete a fatigue test cycle.

The invention discloses a bionically textured material capable of preventing the algae attachment and a preparation method thereof. The bionically textured organic silicon modified acrylic polyurethane antifouling material is prepared by taking natural substances namely biological cuticle or leaves such as crab shell, lotus leaf, and the like as the template, and an organic silicon elastomer as the transition template. The obtained textured antifouling layer has a micrometer level protrusions or pits, wherein the protrusions or pits all have a nano structure, thus the water drop is not easy to wet the surface of the material, and fouling organisms cannot easily attach themselves to the surface of the material; at the same time, the contact surface between the fouling organisms and the bionically textured material is greatly reduced, the attachment sites are reduced, and thus attachment on the surface becomes more difficult for the fouling organisms. The natural antifouling characteristics of biological cuticle or leaves in nature are fully utilized, the characteristics of the microstructure on the surface is utilized to prevent fouling, pollution to the natural environment is not generated, and thus the material is a novel high efficient environment-friendly antifouling material.

The invention discloses a degradable type shield tail sealing grease of a shield excavation machine, belonging to the field of chemical grease. The degradable type shield tail sealing grease of the shield excavation machine is prepared by compounding the following raw materials in parts by weight: 16-20 parts of base oil, 10-16 parts of thickening agents, 68-76 parts of filling materials, 3-5 parts of lubricating agents, 0.5-2 parts of antioxidants, 0.3-1.7 parts of antirusting agents, 0.5-1.5 parts of antimildew agents, 5-7 parts of viscosity index modifying agents and 16-24 parts of plasticizing agents. The preparation method of the degradable type shield tail sealing grease comprises the following steps of: firstly adding the base oil, the thickening agents, the viscosity index modifying agents, the antirusting agents, the antimildew agents, lubricating agents and the antioxidants to an agitator according to weight ratio at normal temperature, and uniformly mixing and agitating; then adding the filling materials in batches, and uniformly mixing; finally adding fibers, and mixing and agitating for about 90 minutes. The degradable type shield tail sealing grease not only has property of the conventional shield tail sealing grease and the advantages of low cost, high adhesivity, good pumping effect and excellent sealing property, but also can be degraded by microbes contained in soil without polluting the soil and underground water, belongs to an environmental-friendly product.

The invention discloses a catalytical ozonization catalyst prepared by utilizing multi-source sludge and an application thereof, and establishes a method for preparing a sludge group active carbon catalyst for catalytical ozone oxidation organic industrial waste water. The method comprises the following steps of: utilizing multi-source sludge such as surplus sludge generated by urban sewage factory biochemical treatment and a metal sludge generated by a Fenton oxidation method, preparing a skeleton which is a sludge group active carbon through steps such as organic substance adding, actification, dehydration, drying, mixing, roasting and screening, wherein a surface layer contains a solid catalyst of metallic oxide, and the ratio of the sludge group active carbon and the metallic oxide in parts by weight is 1:(0.3-0.5). The catalyst is used for catalyzing ozone oxidation treatment organic industrial waste water and has higher catalytic activity and stability, the processing range is wide, the realization and popularization and application are easy, and the economic benefits are improved in an organic industrial waste water processing procedure.

The invention relates to carboxylic acid polymer which is an admixture of concrete which can control the slump loss of the concrete. Hydroxyl bifunctional polyether esterifies with bifunctional maleic or the acid anhydride of maleic to produce crosslinked large monomer, and copolymerizes with allylic alcohol ether and bifunctional small monomer to produce certain molecular weight polymer. The water-reducing agent can incessantly release small molecular weight water-reducing agent during the hydration of the cement, thereby the goal of continuously restraining slump loss is achieved.

A process for preparing flaky heavy calcium carbonate includes choosing altered calcite or coarse-grain marble, pulverizing, preparing slurry, superfine ball grinding with zirconium (or aluminium) oxide balls with diameter of 0.5-1.2 mm and 1.5-2 mm in a ratio of (1-2):(1-3) for 30-60 min, pressing filtering and drying. Its advantages are low cost, no toxicity and no environmental pollution.

The invention discloses a soil sample collecting device for geological exploration. The soil sample collecting device comprises a machine frame; the machine frame is arranged in an inverted T shape; the left side and the right side of the bottom of the machine frame are in threaded connection with adjusting columns which are vertically arranged; the top of the machine frame is in screw connectionwith a screw rod; a first motor is fixed at the bottom of the screw rod; sliding grooves are formed in the left side and the right side of an inner cavity of the machine frame; a supporting plate is connected between two sliding blocks; the bottom of the first motor is connected to the top of the supporting plate; and the output end of the first motor is connected with a rotating shaft. A soil layer is crushed under the action of a drill bit and a crushing blade, then a soil sample is moved upwards under the action of a spiral propeller, and soil is pushed into a sampling barrel and is moved upwards, so that the pushed soil falls into an obliquely-arranged sampling box through a second threaded sleeve and is collected; and the second threaded sleeve and the sampling box are in threaded connection, so that the disassembly and installation of the second threaded sleeve and the sampling box are facilitated, and the sampling box can be replaced when the soil with different depths is collected.

The invention relates to a method for manufacturing a zinc oxide-cellulose nanocrystalline composite fiber film with the antibacterial characteristic and the photocatalytic degradation characteristic at the same time. The method includes the steps of enabling microcrystalline cellulose to be reacted for 5 hours to 10 hours under the 40 DEG C-95 DEG C mixed acid condition, adjusting the pH value to seven after the reaction is finished, and obtaining cellulose nanocrystalline powder; (2) preparing suspension liquid with the powder, mixing the suspension liquid with a zinc salt water solution, dropwise adding a sodium hydroxide solution at 30 DEG C to 95 DEG C, stirring to enable the mixture to be reacted for 5 min to 60 min after drop adding is finished, and carrying out washing and drying to obtain cellulose nanocrystalline-zinc oxide hybrid materials; (3) adding the materials and PHBV into organic solvents, raising the temperature to range 30 DEG C to 80 DEG C, and obtaining an electrostatic spinning solution; (4) carrying out electrostatic spinning on the electrostatic spinning solution, and obtaining the zinc oxide-cellulose nanocrystalline composite fiber film. According to the method, the preparing process is simple, and the obtained fiber film is a multifunctional full biodegradation product and has the antibacterial characteristic and the photocatalytic degradation characteristic.

The invention relates to a novel tubular-structure electric unmanned helicopter which has the prominent advantages of large load, high stability and long duration of voyage. When the novel tubular-structure electric unmanned helicopter is applied in different industries, the workflow is optimized, the working efficiency is improved, and the operation strength and the safety risk of labor personnel are reduced. The novel tubular-structure electric unmanned helicopter is implemented through the following technical scheme: the electric unmanned helicopter uses a novel material, is designed in a four-tube structure, is low in cost and high in safety and can load different equipment to work; due to the high transmission ratio and duty ratio as well as a lithium polymer battery, the running time of a novel power battery is prolonged, and a piece of much heavier operation equipment can be loaded; a tail tube detachable device, a tail vane shock mitigation system and a flybarless structure guarantee the stability and the safety of the unmanned helicopter; a cloud deck stabilizing technique guarantees the shooting angle, so that the picture flutter can be reduced to the greatest extent in the shooting from high altitude; and the industrial-grade application of the unmanned helicopter is achieved in the true sense.

The invention relates to a preparation method of a cellulose based 3D printing wire, and belongs to the field of biomass based 3D printing materials. The invention aims to provide a preparation method of a biomass based 3D printing material, which is low in production cost and can implement industrialization easily. The preparation method comprises the following steps: processing a cellulose raw material by virtue of polyethylene glycol (PEG:MW=400) in combination with a machine to prepare a cellulose polyethylene glycol dispersed solution smaller than 10 microns; flushing away polyethylene glycol by using dichloromethane to obtain a dichloromethane suspension of cellulose; adding a certain amount of silane coupling agent to perform surface silanization modification; adding modified cellulose, plasticizer polyethylene glycol and toughening agent solution into a dichloromethane solution of polylactic acid with certain concentration, mixing uniformly, and then recovering to remove a dichloromethane solvent by virtue of a condensing unit; and finally, performing extrusion molding at a certain temperature by virtue of a linear extrusion molding machine to prepare the cellulose based 3D printing wire.

The invention relates to an iron ore dust suppressant composition, which consists of styrene butadiene latex, a water-soluble polymer material, a surfactant and water. The iron ore dust suppressant can form a cured layer with certain strength and toughness on the surface of iron ore and mineral powder to adhere large, granular and powdery iron ore together, so that iron ore powder can be effectively prevented from flying. The iron ore dust suppressant also can be used for soil desertification prevention, construction site dust prevention and other ore dust prevention, and cannot pollute environment.

The laser surface-hardening process of gear includes the following steps: (1). cleaning surface of gear to be treated and applying light-absorbing paint; (2) scanning surface of gear by using laser beam to quickly heat the surface layer or gear to above phase transformation temp.; (3) removing laser beam from surface of gear, making gear self-body quickly cool and quench so as to form hardened layer on surface of gear. Said ivnention not only possesses high quenching hardness, but also the hardened layer formed on the surface of gear is a alloyed layer whose grains are refined, deformation is less and it has no environmental pollution.

The invention provides a method for recycling and separating paper, aluminum and plastic packaging boxes. The method comprises the steps of: taking the paper, aluminum and plastic packaging boxes; dispersing in a hydraulic dispersion machine; screening and separating out pulp fibers for cellulose high-value use, wherein the rest are the aluminum and plastic composite materials; mixing the obtained aluminum and plastic composite materials with a separating agent, stirring slightly until separating out aluminum and plastic completely; and finally cleaning the separated aluminum and plastic respectively. The separating method of the invention is low in cost, high in recycling efficiency, and does not cause environmental pollution.

The invention discloses a continuous production device of hydroponics pasture, which is integrally in a rectangular structure and is composed of a greenhouse, a continuous production mechanism for planting hydroponics pasture and a control system, wherein the control system can regulate and control the indoor temperature, moisture, illumination, wind speed and air quality and the conditions, such as nutrient solution supply, spraying, circulation, cleaning and the like, the growth requirements of various types of pasture can be satisfied, and the control system can be regulated to adapt to different pasture varieties. Pasture seeds are sown in a planting disk; the continuous production mechanism for planting hydroponics pasture can cause the planting disk to slowly and continuously move, and the hydroponics pasture sprouts and grows in the planting disk; after about 7-15 days, the mature hydroponics pasture is harvested; the hydroponics pasture can be continuously produced; each batch of hydroponics pasture is sown everyday, and each batch of hydroponics pasture is harvested everyday without the limitation of the natural environmental conditions; and both the harvested hydroponics pasture and the root hair can be used for feeding livestock, thereby partially solving the problem of livestock forage grass.

The invention discloses a silicon nitride-modified phase-change and energy-storage microcapsule, comprising a shell material and a cladded core material, wherein the shell material comprises the following raw materials in parts by weight: 50-100 parts of high-molecular polymers and 1-20 parts of silicon nitride powder which is evenly dispersed into the high-molecular polymers; the core material comprises 50-100 parts of organic phase-change and energy-storage materials and 1-20 parts of silicon nitride powder which is evenly dispersed into the organic phase-change and energy-storage materials. The invention also provides a preparation method of the phase-change energy-storage microcapsule. The thermal conductivity of the phase-change and energy-storage material is improved, overheat and overcold degrees in the phase-change process are inhibited, and meanwhile, the thermal endurance and the abrasive resistance, the thermal shock resistance, the fatigue resistance and the like also are improved. The silicon nitride-modified phase-change and energy-storage microcapsule is relatively simple in preparation technology, available in raw materials, strong in controllability, and applicable to the industrial large-scale production, an existing industrial processing technology can be fully utilized, and the performance of the phase-change and energy-storage microcapsule is improved.

The invention relates to a method for preparing a water retaining and sand fixing agent and particularly relates to a method for preparing a water retaining and sand fixing agent by using furfural residues. The method is characterized by comprising the following steps: adding super absorbent resin into water accounting for 20-45% of the total percentage by mass, heating up to 60-90 DEG C, stirring until the super absorbent resin is dissolved, adding the rest of water, then, sequentially adding the fermented furfural residues, a fixing agent and crushed plant straws, and uniformly stirring to obtain the tan pasty water retaining and sand fixing agent. In percentage by weight, 5-25% of fermented furfural residues, 5-20% of fixing agent, 0.5-5% of crushed plant straws, 1-10% of super absorbent resin and 50-85% of water are used. The method provided by the invention is unique, the furfural residues generated in a furfural production process are used as main components to prepare an environmental-friendly and degradable water retaining and sand fixing agent, and the water retaining and sand fixing agent not only can be used for preventing wind and fixing sand, but also can be used as a liquid film and a planting lawn.

The invention provides an Acetobacter xylinum Y05 strain and a method for preparing nanometer cellulose skin tissue repairing material with the same. The preparation method comprises the following steps that: Acetobacter xylinum Y05 (CCTCC M 207163) preserved on an inclined plane is made into a shake-flask seed and cultivated statically to obtain a nanometer cellulose membrane; and the well-cultivated membrane is separated, purified and then compounded with natural polysaccharide (chitosan, etc.) and protein (collagen, silk fibroin, etc.), so as to prepare the repairing material. The nanometer repairing material has good biocompatibility, flexibility and strength which are similar to human skin, as well as good plasticity and elasticity, can be suitable for various irregular wound surfaces, can keep moisture for a long time, and can be used as a skin substitute and medical dressings for burns, chronic skin ulcers and other skin injuries or defects in clinical practice.

The invention relates to a test device and a method for various types of oil pumps, and particularly discloses a sealing type test device and a method applicable to various types of oil pumps. The test method concretely comprises the following steps of: (1) setting the step length of the initial value of the inlet pressure value Gs of the oil pumps to be tested and the gradual decrease Gs value according to the oil pump work points; (2) setting the upper and lower limit values of each step Gs through a visual interface of the monitoring software in a host computer; (3) setting the upper and lower limit values of the test media temperature T through the visual interface of the monitoring software in the host computer; (4) obtaining a net positive suction head calculation formula through deduction and simplification; and (5) gradually decreasing the Gs value according to the step length and finely regulating a throttle valve to enable the oil pump full pressure to be stabilized to the test point pressure value. The test device and the method have the advantages that the sealed space pressure regulation range is large, the pressure of the sealed space can be fast, stably and highly reliably regulated, in addition, the environment is protected, and the tested data are accurate.

The invention discloses a biological treatment method for waste mud in petroleum and natural gas exploration drilling work, which is characterized by comprising the following steps of: a, forming a microbial treatment layer, namely inoculating special microbial strains to the waste mud in a weight ratio of 3-5: 100, mixing the strains and the waste mud uniformly, stirring the mixture and natural soil with water content of 10 to 10 percent and grain diameter of less than 0.5 centimeter uniformly according to the density condition of the waste mud in a following mode to form the microbial treatment layer, adding the natural soil in an amount which is 2.5 to 3 times that of the waste mud into the waste mud with density of 1 to 1.5kg / L, adding the natural soil in an amount which is 2 to 2.5 times that of the waste mud into the waste mud with density of 1.5 to 2.5kg / L, and controlling the water content of the microbial treatment layer to be between 25 and 30 percent; b, treating the soil; and c, treating plants. The method can solve the technical problem that effusion enters underground water to pollute a water source because the natural soil with high water content and large grain diameter is easily scoured by hard rain under the condition that pollutants in a pretreatment mixture are not yet effectively degraded in the prior art.

The invention relates to a method for removing heavy metal from sludge. The method comprises the following steps of: extracting the heavy metal by using citric acid and hydrogen peroxide, performing microwave heating and solid-liquid separation, and adding sodium hydroxide to precipitate the heavy metal. The method is simple in process, the removal rate of the heavy metal is high, and consumption of acid is low; the citric acid solution can be recycled; the method is low in cost and does not harm the environment; and by adding the hydrogen peroxide into the extract, the extraction rate is improved, the reaction is quickened, and loss of available chemical elements such as N and P is reduced.

The invention discloses a hydrochloride total-recover zero-discharge method in PVC production and a relative equipment, which uses a new absorber as hydrochloride combination adsorption tower, an alcaine desorption equipment and a dilute hydrochloric acid deep desorption equipment as main equipments, uses the combination adsorption tower to absorb the over hydrochloride in the chloroethylene production and uses the alcaine desorption equipment and dilute hydrochloric acid deep desorption equipment to convert into the synthesis gas material of chloroethylene. The invention can directly convert the low-density alcaine generated in traditional method into the synthesis gas material of chloroethylene, to save production cost, avoid environment pollution and simplify hydrochloride recovery, with few equipments, small volume, thereby saving investment.

The invention discloses a device with the function of preventing marine creatures from dirt fouling. The interior of a filtering net of a sea water filter is provided with two ultrasonic oscillatory plates, sound production surfaces of which respectively face an inlet pipe and an outlet pipe of the sea water filter; and the interior of a sea chest also can be provided with the ultrasonic oscillatory plates directly above 25-35cm of vertical distances of a grating plate; the sound production surfaces of the ultrasonic oscillatory plates face the grating plate. The ultrasonic oscillatory plates are fixed on a cover plate of the sea water filter and a crest slab of the sea chest by a positioning rod and a connection pipe; the connection pipe leads out a power cord connected with an ultrasonic signal generator. The device can effectively hold up sea creature, cleans the sea water filter and the grating plate of the sea chest, and prevents the filtering net of the sea water filter and the grating plate of the sea chest from being blocked and the attachment of other sea creatures, thus achieving the purpose of effectively preventing marine creatures from dirt fouling.

The present invention relates to a process for pre-electrodeposition of copper at zincium surface by adopting ion liquid. Said method in accordance with the present invention comprises the following steps: selectively synthesizing intermediate of chlorinated 1-methyl-3-butyl-imidazole (BMIM-Cl), preparing BMIBF4 ionic liquid from the BMIM-Cl together with NH4BF4, adding the intermediate of 10%(BMIM-Cl ) and dissolving it in BMIBF4 ionic liquid, and adding waterless copper chloride into the ionic liquid mentioned above finally, stirring them uniformly to form an ionic liquid electrolyte for electroplate copper, wherein said ionic liquid can be used for electric plating zincium surface with one layer of cuprum because that the ionic liquid will substantially not erode surfaces of zincium substrate and will not be involved in a metatheticalreaction with the cupric ions in the ionic liquid at the same time. The electrical current efficiency of the ionic liquid for pre-electrodeposition of copper in accordance with the present invention may achieve 100%. The pin-holing phenomena in plating and hydrogen separation in aqueous solution electrodeposition of copper will not occur for the ionic liquid for electrodeposition of copper. Said ionic liquid for electrodeposition of copper will not pollute the environments.

The invention discloses a novel catalyst for carrying out liquid-phase high-selectivity catalytic oxidation on methylbenzene. The catalyst mainly takes an alkaline-earth metal composite oxide with high temperature stability as a carrier and metals (V, Cr, Mn, Fe, Co, Ni, Cu, Au, Pd and Pt) with high activity as catalytic oxidation active centers. The prepared catalyst shows high selectivity and activity in liquid-phase oxidation of methylbenzene. Under the conditions that the reaction temperature is 90-160 DEG C, the reaction time is 2-48 hours and the pressure of air or oxygen is 0.5-2.0MPa, the highest selectivity of benzaldehyde can be 94.0% and the highest conversion rate of methylbenzene also reaches 45.0%. Compared with the reported results, the prepared catalyst has the advantages that the catalyst still has good mesoporous structure under high temperature; in the catalysis process, the conversion rate of methylbenzene and the yield of benzaldehyde are high; and meanwhile, any solvent or organic additive is not added to a reaction system and the catalyst has the advantages of high yield, low cost, no environmental pollution, easy separation, good repeatability and the like.

The invention relates to a preparation technology of wood-plastic composite materials and particularly relates to a method of preparing a wood-plastic composite material with modified wood powder and waste plastic. The method includes the steps of (1) crushing, milling and drying agricultural and forestry wastes, successively adding three different surface modifiers and successively mixing the surface modifiers with the waste powder in a high-speed mixing machine to prepare a modified waste powder; (2) cleaning the waste plastic, crushing the waste plastic into granules being 2-12 mm in size, and drying the granules; and (3) according to weight percentage ratio, feeding a mixture composed of the modified waste powder, the waste plastic granules, a lubricant, a foamer and a foamer aid into the high-speed mixing machine to perform high-speed mixing, cooling the mixture until the temperature is lower than 55 DEG C and discharging the material to prepare a special premix. The composite material is very high in strength and anti-bending and anti-impact performance, wherein the anti-impact strength is significantly improved so that the composite material is greatly improved in processability, and further can be used for producing products satisfying different demands. The composite material is greatly wide in application range.

The invention relates to the field of medical technologies, in particular to a lipoic-acid-modified nanometer polypeptide carrier and a preparation method and application thereof.The lipoic-acid-modified nanometer polypeptide carrier is composed of arginine, histidine, lipoic acid and cysteine.A disulfide bond contained in lipoic acid is adopted for cross-linking, a formed polypeptide polymer can be rapidly degraded in cells and will not accumulate in the cells, and arginine and cysteine in polypeptide are in-vivo amino acid and are free of toxic and side effects to the human body.A CCK-8 cell proliferation test shows that the prepared nanometer carrier has low cell toxicity and meanwhile has good capacity of co-delivery of a gene and chemotherapy drugs; the nanometer carrier can specifically enhance the sensitivity of drug-resistant cells to the chemotherapy drugs in breast cancer drug-resistant treatment and promote apoptosis of breast cancer cells, and therefore becomes a targeted, efficient and low-toxicity nanoscale delivery system in breast cancer drug-resistant treatment.

The invention relates to a preparation method of an electrolyte for a vanadium redox battery (VRB), wherein the electrolyte for the VRB is prepared by means of an electrolytic process, the electrolyte for the VRB prepared by means of an electrolytic process is a quadrivalent vanadium ion solution, and the preparation method comprises the following basic steps: 1) preparing a mixed solution composed of sulfuric acid and vanadium sulphate, adding vanadium pentoxide powder into a 98% sulfuric acid solution, then heating and stirring, and then diluting with distilled water to prepare a mixed solution comprising sulfuric acid and vanadium sulphate; 2) filtering the mixed solution comprising sulfuric acid and vanadium sulphate to remove a small quantity of insoluble vanadium pentoxide to obtain a mixed solution comprising sulfuric acid and vanadium sulphate, wherein the mixed solution can meet the requirements for the preparation of the quadrivalent vanadium ion solution; and 3) pouring the mixed solution comprising sulfuric acid and vanadium sulphate into an electrolytic cell without a diaphragm to electrolyze to obtain a quadrivalent vanadium ion solution. The preparation method provided by the invention has the advantages that the preparation cost is reduced and the process is simple.