43results about How to "Improve passivation ability" patented technology

The invention relates to the field of microorganisms and discloses a microbial strain capable of remedying heavy metal-contaminated soil and application of the microbial strain. The preservation number of the microbial strain is CGMCC No.10843. A strain of burkholderia cepacia is screened from the soil contaminated by heavy metal cadmium and can purify the exchangeable cadmium in the soil and significantly reduce the content of the exchangeable cadmium. The microbial strain is extremely-strong in tolerance to the cadmium and small in soil disturbance, has a stronger biological remediation function, meanwhile can improve the activity of soil dehydrogenase and can also be applied to the remediation of the heavy metal-contaminated soil and the improvement of the activity of the soil dehydrogenase as well as the preparation of relevant products.

The invention relates to the technical field of plating films on the surface of organic polymers. The invention is realized through the following technical scheme that: the method for plating chromium on the surface of plastic materials sequentially comprises (1) a step for pretreatment; (2) a step for preparing a bottom plating layer; (3) a step for preparing a metallic chromium plating layer; (4) a step for preparing a surface plating layer; (5) inspection; and (6) packaging. The invention is suitable for the mechanical industry, transparent materials and other aspects.

The invention mainly discloses a heavy metal passivating and nitrogen-preserving method in a livestock manure aerobic composting process. The method comprises the following steps: according to a certain proportion and sequence, mixing livestock manure, a heavy metal passivating material, a biochemistry inhibitor and a conditioner, and performing aerobic composting, wherein according to parts by weight, an adding proportion of the livestock manure, the heavy metal passivating material, the biochemistry inhibitor and the conditioner is 1:0.005-0.2:0.001-0.01:0.3-0.5, and the heavy metal passivating material comprises one or more of modified charcoal, modified ground phosphate rock, modified zeolite, modified sepiolite and lime; and ventilating and turning over in natural conditions, composting for 30-45 days. The method is capable of performing the aerobic composting by using livestock and poultry industry and agriculture organic wastes of the livestock manure, straw and the like as rawmaterials, providing technical guidance for reducing heavy metal bio-availability in the livestock manure and reducing nitrogen nutrient loss, acquiring a high-quality organic fertilizer, and providing a scheme for agricultural healthy sustainable development.

The invention discloses a process for producing active lime, which comprises adhering a passivating agent onto the lime carbonate during the common lime burning procedure, the content of passivating agent in the lime carbonate being 1-30%.

The invention provides a non-initiating unlocking device and a locking and unlocking method thereof, which belongs to the field of unlocking devices. The device comprising a fastening cord, A hot knife assembly and at least two locking release members, the lock release member is used for fixing on the first member and the lock release member is used for fixing on the first member, the fastening cord is for providing a tightening force to the lock release member such that the lock release member locks the second member in a first state, the hot knife assembly comprises a hot knife and a hot knife mounting part, The hot knife mounting part is made of heat insulating material, the hot knife is arranged in the hot knife mounting part, the fastening rope is in close contact with the hot knife,and the hot knife is an electric heating element for generating heat to fuse the fastening rope, so that the locking releasing part returns to the second state and releases the second part. The invention avoids the carbonaceous fragments caused by the radial thrust, and the hot knife and the hot knife mounting part are structured under the space environment, and the performance is stable and the reliability is high.

The invention discloses a charcoal amine sulfur dual-group modification method. The method comprises the following steps that charcoal is subjected to nitric acid acidification oxidation, after ultrasonic concussion is performed for 2-5 h, centrifugal washing is performed till the charcoal is neutral to obtain oxidized activated charcoal BC-O; on the basis of the oxidized activated charcoal BC-O, the proper PH is adjusted, methanal is added under the constant temperature of 40-60 DEG C, ta reaction is performed to 20-50 min, polyamine substances are added dropwise, a reaction is performed for 4-6 h, and amino modified charcoal BC-N is obtained; cooling is performed to reach the room temperature, NaOH with the mass fraction being 40-50% is added, carbon disulfide is added dropwise to perform a sulfenyl reaction, after dropping is completed, the temperature is increased to 60-80 DEG C, and a reaction is performed for 5-7 h; centrifugal washing is performed, and after drying, the amine sulfur dual-group modified charcoal BC-SN is obtained. The prepared modified charcoal has the advantages that surface groups are abundant, the specific surface area is large, and the pore volume is large, and heavy metal ions are adsorbed and passivated.

The invention belongs to the technical field of lithium ion batteries and especially relates to an electrolyte adaptive to a silicon-carbon negative electrode and a lithium ion battery. The electrolyte comprises electrolyte lithium salt, a non-aqueous organic solvent and additives, and the additives comprise a compound additive A with a structure as shown in a formula I, a compound additive B withthe structure as shown in a formula II, a film-forming additive C and a lithium salt additive D. Compared with the prior art, by using the lithium ion battery electrolyte adaptive to the silicon-carbon negative electrode, through a synergistic effect of the additive A, the additive B, the additive C and the additive D, the electrolyte has excellent film forming performance on a surface of the silicon-carbon negative electrode so that cycle performance, high-temperature storage performance and the like of the silicon-carbon negative electrode lithium ion battery are effectively improved, and problems of volume expansion, cycle diving and the like in a charging and discharging process of the silicon-carbon negative electrode battery in the prior art are well solved.

The invention specifically discloses Pseudomonas aeruginosa and application thereof. The accession number of the Pseudomonas aeruginosa is CGMCC No. 10844. The invention also discloses a microbial agent containing the Pseudomonas aeruginosa and a method for passivation of lead. The Pseudomonas aeruginosa provided by the invention has strong capability in passivation of lead in a water body, can finish passivation of lead within 4 to 5 h and has a maximal lead removal rate of 97.33%. As soil contaminated by lead is inoculated with the Pseudomonas aeruginosa, the dehydrogenase activity of the soil can be obviously improved, and lead can be effectively changed into a stable state from a transformable state so as to achieve the effect of lead passivation. Moreover, as the Pseudomonas aeruginosa is used for lead passivation, operation is simple, a period is short, secondary pollution is not posed and high economic benefits and social benefits are obtained.

The invention relates to an organic polymer with a coated surface, in particular relating to coated polycarbonate. The invention is realized by the following technical scheme: the coated polycarbonate comprises a polycarbonate substrate layer and a coating layer, and the coating layer consists of a titanium oxide bottom coating layer, a chrome coating layer and a titanium oxide surface coating layer. The invention is applicable to various aspects like mechanical industry and transparent materials.

The invention discloses a natural medical stone contained agricultural soil heavy metal passivator and a preparation method thereof. The metal passivator comprises the following raw materials in partsby weight: 20-40 parts of clay minerals, 25-35 parts of quicklime, 20-30 parts of medical stone, 10-30 parts of natural phosphate fertilizer, 5-10 parts of oyster shells and 2-6 parts of red mud. Thepreparation method comprises the following steps: S1, preparing the raw materials; S2, calcining the raw materials; S3, crushing the raw materials; S4, mixing the raw materials. The metal passivatorcan passivate and repair various heavy metals, especially lead and cadmium, greatly increases the yield of crops, improves quality of soil, and is more beneficial to the growth of crops; the preparation method is simple in preparation process, easy to operate and low in cost. Therefore, the passivator is suitable for batch production.

The invention discloses a 304 stainless steel surface multielement coupling super-hydrophobic preparation method, and belongs to the field of metal part and material surface super hydrophobicity. The304 stainless steel surface multielement coupling super-hydrophobic preparation method is capable of solving the adverse hydrophobic problem of the surface of prepared 304 stainless steel. The 304 stainless steel surface multielement coupling super-hydrophobic preparation method comprises following steps: polishing, a first time of sandblasting, monopulse deposition, a second time of sandblasting,and drying. The 304 stainless steel surface multielement coupling super-hydrophobic preparation method is capable of obtaining grading scale structures (submillimeter grade, and micrometer-nanometergrade) of the 304 stainless steel hydrophobic surface, wherein the scale of a cauliflower-like protruding main structure formed through monopulse deposition on a matrix is micrometer-nanometer grade,the scale of second time sandblasting formed surface destroyed cauliflower-like protrudings and protruding gaps is submillimeter grade; a rough structure formed through the first time of sandblastingis capable of increasing the bonding force of the coating layer with the matrix, a rough structure formed through the second time of sandblasting is capable of forming a multi-scale multi-stage microstructure on coating surfaces, and surface hydrophobicity is improved.

The invention provides a titanium alloy with osteoinductive activity for a bone fixing apparatus. The titanium alloy comprises the following chemical components in percentage by mass: 3-8% of Zn, 2-6%of Fe, 0.5-1.2% of Mo, 0.5-1.0% of Sr, 0.5-1.2% of Se, 0.4-1.0% of Mn, 0.2-0.8% of Cu, 1.8% of a nanosilver wire, 8.2% of ZrO2, 0.5-1.2% of K2CO3, 0.6-1.2% of B, 12-20% of Zr, 0.2-0.5% of a carbon nanotube and the balance Ti. A preparation process of the titanium alloy provided by the invention comprises the following steps: first, preparing an intermediate alloy I (the intermediate alloy is prepared by sintering the nanosilver wire and ZrO2) and an intermediate alloy II (the intermediate alloy II is prepared by smelting K2CO3, B, Zr and the carbon nanotube); and then carrying out cast forming after smelting other raw materials and the intermediate alloys I and II and carrying out corresponding thermal treatment. The obtained titanium alloy is excellent in mechanical property and has goodosteoinductive activity and an antibacterial function.

The invention discloses an in-situ combined repair method for polluted surface water environment. The in-situ combined repair method comprises the steps: (1) preparing powder zirconium modified zeolite, particle zirconium modified zeolite and powder zirconium modified bottom mud; (2) putting powder zirconium modified bottom mud into and utilizing mechanical stirring or hydraulic stirring to finishimproving surface-layer bottom mud through powder zirconium modified bottom mud; (3) sequentially adding the defined amount of the powder zirconium modified zeolite and the defined amount of the particle zirconium modified zeolite to form a bottom mud covering layer; (4) constructing a floating island system through the wrapped particle zirconium modified zeolite and a floating bed assembly. Thein-situ combined repair method disclosed by the invention has the advatanges: the zirconium modified bottom mud utilized in the in-situ combined repair method disclosed by the invention has more ecological property and environmental friendliness compared with traditional powder zirconium modified zeolite; by means of the in-situ combined repair method disclosed by the invention, synchronous preparation of the powder and particle zirconium modified zeolite is achieved; furthermore, the powder zirconium modified zeolite utilized by the in-situ combined repair method disclosed by the invention has stronger phosphorus passivating capacity; according to the in-situ combined repair method disclosed by the invention, water body in-situ repair methods of a bottom mud active covering / improving combined technology and a zirconium modified particle zeolite floating island technology are comprehensively utilized; thus, a repair effect is better, more cost-effective economic cost is achieved, and the in-situ combined repair method can be more suitable for a sustainable development idea.

The invention relates to the field of solar cell production. The invention provides a preparation method of a PERC solar cell. The method comprises the steps of texturing, diffusion, laser SE, back PSG removal, alkali etching and polishing, front PSG removal, annealing, aluminum oxide treatment, front antireflection film deposition, back laser grooving, screen printing, and sintering, wherein after laser SE, chain oxidation, ozone oxidation and back PSG removal and subsequent steps are sequentially carried out, in the chain oxidation step, a layer of oxidation film is plated on the surface subjected to phosphorus doping in laser SE, the thickness of the oxidation film is controlled to be 10-100 nm, the temperature is controlled to be 500-800 DEG C, and in the ozone oxidation step, ozone is introduced after the oxidation film is generated in the chain oxidation step to enhance the front protection effect, and the ozone concentration is controlled to be 10-100 ppm.

The invention belongs to the technical field of soil remediation, and particularly relates to a passivation remediation agent for As contaminated soil and a preparation method of the passivation remediation agent. The passivation remediation agent for the As contaminated soil comprises the following components, in parts by weight: 8-10 parts of fly ash, 3-5 parts of ammoniated humic acid, and 1-3parts of ferrous sulfate. According to the passivation remediation agent provided by the invention, the ammoniated humic acid and heavy metal arsenic can be subjected to chelation complexation, ion exchange, redox and adsorption, so that a storage form of the heavy metal arsenic in the soil is changed, the heavy metal arsenic is passivated, the mobility and bioavailability of the heavy metal arsenic in the soil are reduced, and the purpose of passivation stabilization is achieved.

The invention relates to an anti-corrosion composite coating in a garbage incinerator environment and a preparation method of the anti-corrosion composite coating, and belongs to the technical field of high-temperature oxidation resistance and molten chlorine salt corrosion resistance of water cooling walls of garbage incineration boilers. The composite coating comprises a Fe18Cr9Ni3B3Si1C thermal spraying layer and a K600 coating layer, wherein the Fe18Cr9Ni3B3Si1C thermal spraying layer is a bottom layer and is located between the K600 coating layer and the surface of a workpiece, and the K600 coating layer is a surface layer. The anti-corrosion composite coating and the preparation method solve the problems that the water cooling wall of the waste incineration boiler is prone to thinning and penetration pipe explosion.

The invention discloses a geological exploration soil detection result statistical analysis system, which comprises passivator research and development, scheme customization, scheme design and projectimplementation. The passivator research and development internally comprises a site partition, one side of the site partition is connected with research and development implementation, and the otherside of the research and development implementation is connected with achievement acceptance and tidying. According to the geological exploration soil detection result statistical analysis system, onthe basis of evaluating the influence of the passivator on the ecological safety of the soil environment, the optimal mix proportion is optimized, and the efficient, practical, safe, economical and feasible Cd-polluted cultivated land soil composite passivator is prepared through an experimental simulation method; an economic, efficient and environment-friendly practical technology system is provided for the treatment of heavy metal contaminated farmland soil, and technical support and guarantee are provided; the zeolite, the activated carbon and the calcium superphosphate have a very strong passivation effect on heavy metals, and the price is far lower than that of some nano materials and high polymer materials, so that the operation cost is reduced.

The invention relates to the technical field of radio frequency coaxial cables, in particular to a missile-borne ultrahigh-temperature flexible radio frequency coaxial cable which comprises a conductor, an insulating layer, a shielding layer and a protective sleeve, and the insulating layer, the shielding layer and the protective sleeve are sequentially arranged on the outer side of the conductor and are all made of high-temperature-resistant materials. The high-temperature-resistant flexible cable has the advantages of high temperature resistance, softness and low loss, and compared with the prior art, the high-temperature-resistant flexible cable still has the functions of softness, low loss and the like in high-temperature environments with special requirements of missile-borne, radar and the like.

The invention relates to the field of microorganisms, and discloses a microorganism strain for repairing heavy metal polluted soil and an application thereof. The deposit number of the microorganism strain of the present invention is CGMCC No.10843. The invention selects a Burkholderia cepacia strain from soil polluted by heavy metal cadmium, which can passivate exchangeable cadmium in the soil and significantly reduce its content, and has extremely strong tolerance to cadmium, It has little disturbance to soil, has strong bioremediation function, and can improve the activity of soil dehydrogenase.

The invention provides a solar heat conduction pipe surface processing method. According to the method, firstly a heat conduction pipe is placed into a copper chemical polishing brightener to be soaked for 2-5 minutes, taken out to be washed out through running water, placed into hot water to be processed and vertically hung up after an oxide layer is removed; a condensing end is sequentially placed into a dark nickel groove and a bright nickel groove to be powered on for 2-6 minutes and placed into running water to be cleaned after nickel plating is conducted; the electroplating portion of the heat conduction pipe is placed into a nickel plating sealing agent, and a protection layer is formed on the electroplating portion; the condensing end of the heat conduction pipe on which the protection layer is plated is cleaned through running water and then processed through hot water, dried, checked and packed. According to the method, the copper chemical polishing brightener processes the oxide layer, copper pipe surface oxide layer processing and forming the protection layer on the copper pipe surface are integrated, the processing effect is good, the cost is low, and the splashed-out solution is easy to process; two layer of nickel are plated on the condensing end, the oxidation resistance and the heat collection performance of the condensing end are improved, the service life of the heat conduction pipe is prolonged, waste water is less and easy to process, and all the waste water can be repeatedly used.

The invention discloses an impact-resistant chip resistor and a manufacturing method thereof, and relates to the technical field of resistors, the impact-resistant chip resistor comprises a resistor body, the resistor body further comprises a substrate mounted at the bottom, the top of the substrate is fixedly connected with an impedance element, the top of the impedance element is provided with a base layer sealing layer, and the top of the base layer sealing layer is fixedly connected with the substrate. The top of the base sealing layer is fixedly connected with the second sealing layer, one side of the substrate is provided with the inner end face, the outer surface of the inner end face is provided with the middle end face, the outer surface of the middle end face is fixedly connected with the outer end face, the top of the substrate is provided with the first conductive plate, and one side of the first conductive plate is fixedly connected with the ceramic tube. One end of the ceramic tube is provided with a second conductive plate, the outer surface of the ceramic tube is sleeved with a nickel wire, and the substrate is also provided with a conductive plate I. The chip resistor has the advantages of low manufacturing cost, long service life, high temperature resistance, oxidation resistance and good corrosion resistance, and the impact resistance, safety and stability of the chip resistor are improved.

The invention provides an agent for farmland heavy metal pollution treatment and a preparation method thereof, and relates to the technical field of soil remediation and treatment. The medicament mainly comprises the following raw materials: lime, kaolin, sepiolite and vinasse. According to the invention, the biochar prepared from vinasse is used as a main porous substance, so that the biochar has a relatively good adsorption effect on heavy metals, and lime, kaolin and sepiolite can be compounded, so that the competitive effect of various heavy metals is reduced, and the passivation effect of heavy metals in farmland soil is improved. Meanwhile, the lime and the kaolin have viscosity, so that the molecular interaction between the lime and the kaolin and the vinasse biochar is relatively strong. In addition, according to the preparation method of the agent, acid modification and sintering are mainly adopted, after minerals are modified through acid liquor, the passivation effect of the agent is enhanced, then after mixing, sintering is conducted under the high-temperature condition, the combination effect of the raw materials is good, and the passivation effect of the agent can be further improved.

The invention belongs to the technical field of water body sediment restoration, and particularly relates to a composite material for efficiently passivating sediment phosphorus and a preparation method of the composite material. The preparation method of the composite material comprises the following steps: mixing LaCl3. 7H2O, CaCl2 and AlCl3. 6H2O, adding into water, heating in a water bath under an alkaline condition for co-precipitation and crystallization, collecting the precipitate, and drying to obtain the precipitate phosphorus passivation material Ca / Al or La / Ca / Al composite material. The Ca / Al and La / Ca / Al composite materials prepared by the method can adapt to a larger pH value range in eutrophicated lakes, and keep a high sediment phosphorus passivation effect in acidic, neutral and alkaline lake water. In addition, the phosphorus passivation effect of Ca / Al and La / Ca / Al is very effective in anaerobic and aerobic environments, and can cope with various frequently changing oxidation-reduction environments in lakes.