30results about How to "Easy to operate and environmentally friendly" patented technology

The invention discloses a sectional cutting and overall craning method for a supporting beam in deep foundation pit multilayered reinforced concrete. The method comprises the steps of internal force measurement, cutting and dismantling, transferring in the foundation pit, entirely craning of the supporting beam, off-site crushing of the supporting beam and the like. The method is to construct on an underground horizontal thin slab structure without special requirement on the construction platform. A steel pipe supporting system of the underground thin slab structure is not required to be reinforced, but holes and expansion joint positions are reserved for the underground horizontal thin slab to be locally reinforced. When the supporting beam is cut off and dismantled, the steel pipe stand is not required for the lower part. The single input of the steel pipe stand material is greatly reduced on the site, and the steel pipe stand can be dismantled in advance to improve the turnover rate of the steel pipe stand.

The invention provides a sodium-ion battery positive electrode material, a preparation method thereof and a sodium-ion battery. The chemical formula of the sodium-ion battery positive electrode material is NaxNi0.167Co0.167Mn0.6702, wherein x is more than or equal to 0.5 and less than or equal to 0.8, the shape of the sodium-ion battery positive electrode material is spherical, and the concentrations of manganese and nickle are distributed in a gradient manner along the radial direction. The preparation method provided by the invention comprises the following steps: (1) mixing aqueous alkali with a mixed metal salt solution, performing co-precipitation reaction, adding a manganese solution into a co-precipitation reaction system, and performing solid-liquid separation, so as to obtain a precipitate which is mixed metal carbonate; (2) presintering the mixed metal carbonate in an air atmosphere to obtain a mixed metal oxide; and (3) mixing the mixed metal oxide with a sodium source and then calcining, thus obtaining the sodium-ion battery positive electrode material. The sodium-ion battery positive electrode material provided by the invention has excellent specific capacity and cycleperformance.

The invention provides a liquid polyisoprene, a preparation method and an application thereof. The method comprises contacting isoprene with an organic lithium initiator and water in a solvent under an anionic polymerization conditions, wherein a mole ratio of the water and the organic lithium initiator is 0.9-9 : 100. The liquid polyisoprene is narrow in molecular weight distribution, and high in content of such a structural unit formed from the isoprene through a 1,4-polymeration way. In addition, the method provided by the invention is simple to operate and environmental-protective. The liquid polyisoprene is especially suitable for being used as plasticizers or softeners of natural rubber.

The invention belongs to the field of inorganic biomedical materials, and relates to a large-size silver-loaded hydroxyapatite porous microsphere material and a preparation method thereof. The preparation method comprises the following steps that firstly, soluble calcium salt, soluble dibasic hydrogen phosphate and a urea solution are mixed and are adjusted to be clear by using a nitric acid solution, then L-glutamic acid is added so as to obtain a precursor solution, then soluble silver salt is added into the precursor solution, and hydrothermal reaction is carried out on an obtained mixed solution so as to obtain a silver-ion-doped HA porous microsphere. According to the large-size silver-loaded hydroxyapatite porous microsphere material and the preparation method thereof, the silver doping step and sequence are designed so as to obtain the large-size silver-ion-doped HA porous microsphere with the particle size of 30-100 microns, being porous with pores communicated with one anotherand with the surface composed of flaky crystals, and the microsphere can be used as an antibacterial drug controlled release carrier, an injectable osteanagenesis biological material and an implant for loading a cell / drug in the biological antibacterial field.

The invention relates to a laser heat treatment hardening method for a steel pipe cast iron roll surface. The method comprises the steps of dividing an arc roll surface into 3-9 areas, spraying light-absorbing coatings on cast iron roll to be processed, and heating the roll surface to a micro-melting state by high-energy laser beams. A laser strengthened layer obtained by the method is metallurgically combined with a matrix, and is advantageous in that crystal grains are refined obviously, the thickness of the hardening layer ranges from 0.3 mm to 1.0 mm, the hardness reaches HV 620-760, the laser strengthened layer has good wear-resistance performance, and the lifetime of the roll is improved for 1-5 times. Moreover, according to the method provided by the invention, no subsequent process is needed after the laser hardening treatment of the steel pipe cast iron roll, and production cost is reduced. The method is practical and reliable, is convenient for operation, is environment-friendly, and has a great popularization value and huge social benefits.

The invention discloses a manufacturing method based on a photocuring 3D printing technology and used for a circuit board. The manufacturing method based on the photocuring 3D printing technology andused for the circuit board comprises the following steps: (1) designing a matrix model and a circuit pattern of the circuit board; (2) setting the printing parameters of the matrix model, and slicingthe matrix model; (3) blending functional photocuring resin; (4) printing a circuit board matrix through a photocuring 3D printing machine; (5) activating the surface of the matrix through laser to form an activated layer attached with a chemical plating catalyst; (6) carrying out chemical plating on the circuit board matrix; and (7) installing electronic components at the corresponding positionsof the circuit board matrix. The manufacturing method is high in machining degree of freedom, and capable of being applied to manufacturing for a three-dimensional circuit and manufacturing for a two-dimensional circuit board. The manufacturing method is capable of conveniently designing the circuit board and the circuit pattern according to the actual user need, and efficiently manufacturing thecircuit board, low in manufacturing cost, short in process flow, and green and environment-friendly.

The invention relates to a tail gas treatment device, in particular to an energy-saving and environment-friendly automobile tail gas treatment device. According to the energy-saving and environment-friendly automobile tail gas treatment device, the technical problem to be solved is to provide the energy-saving and environment-friendly automobile tail gas treatment device capable of automatically filtering particles in tail gas and purifying the tail gas. The energy-saving and environment-friendly automobile tail gas treatment device comprises a bottom plate, a motor, a storage mechanism and astirring mechanism, wherein the motor is arranged on one side of the top of the bottom plate; the storage mechanism is arranged on one side of the top of the bottom plate; and the stirring mechanism is arranged on one side of the top of the bottom plate. Through cooperation of the storage mechanism, a filtering mechanism and the stirring mechanism, automobile tail gas can be automatically filteredand purified, the automobile tail gas is changed into non-toxic emission, and operation is convenient and environmentally friendly; and by means of an indirect discharging mechanism, intermittent discharging of a catalyst can be automatically completed, the catalyst does not need to be manually added, and therefore work of people is facilitated.

The invention belongs to the technical field of carbon powder for office consumables, and particularly relates to monocomponent non-magnetic color fading carbon powder for a laser printer and a duplicator and a preparation method thereof. The carbon powder is prepared by mixing a microspherical reaction system prepared from sodium bicarbonate, an alkaline compound, a charge regulator, a color variable dye, a carrier and a drying agent, and a matrix polymer prepared from polystyrene resin, a modifier and the charge regulator fully. The function of automatic color fading of handwriting on printed paper is realized by changing the composition of a carbon powder system under the condition of laminating and stacking the printed paper normally, the printed paper of abandoned temporary files can be used repeatedly, and the phenomenon that the original handwriting appears again does not occur when the printed paper is used again, so a large amount of office paper is prevented from being wasted effectively, resources are saved, simple and convenient operation is achieved, and the carbon powder is environmentally-friendly and effective. The carbon powder is suitable for printing and duplicating the temporary files or drafts, and ordinary carbon powder is still used for files which are needed to be stored for a long term.

The invention provides poly furan-2,5-dicarboxylic acid-2,3-butanediol diacrylate and a preparation method thereof. The method comprises the following steps of reacting furan-2,5-dicarboxylic acid with 2,3-butanediol under the action of a tetravalent titanium compound catalyst, performing condensation polymerization on obtained intermediate products under the pressure of 10Pa-70Pa to obtain the product poly furan-2,5-dicarboxylic acid-2,3-butanediol diacrylate, wherein the tetravalent titanium compound catalyst comprises organic modifier-modified mesoporous silica and a tetravalent titanium compound which is loaded onto the mesoporous silica, wherein an organic modifier is a titanate coupling agent or a silane coupling agent. The product has at least one of first repeating unit shown by a formula (I), a second repeating unit shown by a formula (II) and a third repeating unit shown by a formula (III), and the intrinsic viscosity of the product is not lower than 0.5 deciliter per gram (0.5dL / g). Moreover, the preparation method is environmentally friendly and simple.

The invention belongs to the field of new methods for preparing a medical nano preparation auxiliary material, and particularly relates to a preparation method for a dendritic nano silicon particle. The method comprises the following steps: using hexadecyl trimethyl ammonium halide, silicate ester, fatty acid salt and deionized water as reaction raw materials, and synthesizing the dendritic nano silicon particle of which a surface structure is a central radial pore structure. The preparation method is moderate in condition, environment-friendly, and easy to amplification production. An obtained product is stable in structure, good in dispersibility, and can be used as a carrier of a biomacromolecule or a drug, a catalyst molecule and the like.

The invention provides an aluminum-copper composite plate adopting aluminum alloy and a preparation method of the aluminum-copper composite plate. The preparation method comprises the steps that oil stains on the surface are removed; homogenizing annealing treatment and water quenching treatment are carried out; surface oxide skin and other impurities are removed, a foamed aluminum plate is subjected to electrochemical polishing treatment, and the surface roughness of the aluminum alloy plate and the copper plate is ground to 50 micrometers or below; the copper plate, the foamed aluminum plate and the aluminum alloy plate are sequentially aligned, stacked, clamped and fixed from bottom to top; cold rolling composite treatment is carried out; annealing heat treatment is carried out under the protection of inert atmosphere, molten pure aluminum liquid is slowly injected into the foamed aluminum plate layer, and rapid cooling is carried out after annealing heat treatment is finished; cold finish rolling treatment is carried out; and heat treatment is carried out under the protection of mixed gas of inert gas and hydrogen. In the aluminum alloy plate, the content of Si is 0.5%-1.2%, the content of Cu is 3.9%-4.8%, the content of Mg is 0.4%-0.8%, the content of Mn is 0.4%-1.0%, and the content of Zn is 0.25%. The interface bonding strength of the aluminum-copper composite plate finished product can be effectively improved, and the cracking occurrence rate of the bonding surface of the copper plate and the aluminum alloy plate is lower than that of an existing aluminum-copper composite plate.

The invention relates to the field of vaccine processing, and particularly provides a vaccine and an emulsification process and application thereof. According to the emulsification process of the vaccine provided by the invention, an antigen is dripped into an adjuvant filtered and sterilized by a filtering and sterilizing device, so that the emulsified vaccine is prepared. The sterilization of the adjuvant adopts a filtering and sterilizing process to replace a conventional high-temperature sterilizing manner, the method is simple and easy to operate, ingredients and properties of the prepared product are uniform, the stability is good, and the immune effect is remarkably increased. The vaccine provided by the invention is prepared by applying the emulsification process for the vaccine. Ingredients and properties of the vaccine are uniform, the stability is good, the immune effect is remarkably increased, and the vaccine can be industrially produced and applied in production and life.

The invention discloses a sectional cutting and overall craning method for a supporting beam in deep foundation pit multilayered reinforced concrete. The method comprises the steps of internal force measurement, cutting and dismantling, transferring in the foundation pit, entirely craning of the supporting beam, off-site crushing of the supporting beam and the like. The method is to construct on an underground horizontal thin slab structure without special requirement on the construction platform. A steel pipe supporting system of the underground thin slab structure is not required to be reinforced, but holes and expansion joint positions are reserved for the underground horizontal thin slab to be locally reinforced. When the supporting beam is cut off and dismantled, the steel pipe stand is not required for the lower part. The single input of the steel pipe stand material is greatly reduced on the site, and the steel pipe stand can be dismantled in advance to improve the turnover rate of the steel pipe stand.

The invention belongs to the field of a novel method for preparing a nano material for the pharmaceutical and chemical industry, and particularly relates to a preparation method for regulating spherical nano silicon particles and spherical mesoporous nano silicon particles. The preparation method first adopts fatty acid salt and cationic surface active agent to form a mixed surface active agent which is used as a template molecule, the spherical mesoporous nano silicon particles (less than 100nm) and spherical nano silicon particles (about 200nm or greater) can be regulated and prepared by regulating the consumption of a silicon precursor agent, and a chemical nature is a polymer of silicon dioxide. The preparation method of the invention is mild, environment-friendly, easy in amplified production and easy in mass production; and an obtained product is stable in structure, good in dispersion performance and capable of being used as a carrier of difficult-to-dissolve and biological macromolecular drugs.

The invention discloses perfluorosulfonic acid / coupled phosphotungstic acid lignin coating liquid, an ion exchange membrane and a preparation method thereof. The preparation raw materials of the perfluorosulfonic acid / coupled phosphotungstic acid lignin coating liquid comprise coupled phosphotungstic acid lignin, perfluorosulfonic acid resin and a solvent, wherein the mass ratio of the coupled phosphotungstic acid lignin to the perfluorinated sulfonic acid resin is (0.1-15): 100. The coupled phosphotungstic acid lignin has the advantages of good dispersity, good hydrophilicity, high proton conductivity and the like, a proton transfer channel is easily regulated and controlled from the molecular scale, rapid proton transfer can be realized, meanwhile, the water retention rate of the perfluorosulfonic acid exchange membrane under high-temperature and low-humidity conditions is increased, and the industrialization development of proton exchange membrane fuel cells is promoted.

The invention relates to the field of preparation of lithium ion battery separators, and in particular relates to a method of preparing a PP / PA66 composite battery separator. Alpha-methyl styrene (AMS), N-phenylmaleimide (NPMI) and glycidyl methacrylate (GMA) are firstly used for copolymerization to prepare a macroinitiator PANG; the prepared PANG and PP are subjected to melt blending to prepare aPP-g-PANG graft copolymer, and the graft copolymer can be used as a compatibilizer for the PP / PA66 system and can effectively improve the heat resistance of the composit.; a PP / PA66 compatibilized blend is prepared by adopting a melt blending method; and a cast base film is prepared by the compatibilized blend, and a composite battery separator is prepared through a uniaxial tension process. Compared with the PP separator, the PP / PA66 composite battery separator prepared in the invention obtains effective improvement on heat resistance and hydrophilicity.

The invention provides a physiological parameter monitoring device and medical equipment with the physiological parameter monitoring device. The medical equipment is provided with an accommodating space used for accommodating the physiological parameter monitoring device, and a first charging transmission module is arranged inside the medical equipment; a second charging transmission module is arranged inside the physiological parameter monitoring device, and the second charging transmission module includes at least one pin, and the physiological parameter monitoring device is provided with atleast one conduction hole corresponding to the pin; and when the physiological parameter monitoring device is accommodated in the accommodating space of the medical equipment, a pin of the first charging transmission module in the accommodating space of the medical equipment passes through the conduction hole to be connected with the pin of the second charging transmission module in the physiological parameter monitoring device, so as to charge the physiological parameter monitoring device and carry out data interactive transmission with the physiological parameter monitoring device. The charging mode and the data interactive transmission mode need no battery charging or additional data cables, so that the operation is convenient and environmentally-friendly.

The invention provides a method for preparing a magnetic multi-effect adsorbent by using enzymolysis residues as s raw material. The method comprises the following steps: washing the enzymolysis residue raw material to be neutral, and drying; then uniformly mixing the dried raw material with magnetic nano-particles according to the weight ratio of (5: 1)-(1: 5), and preheating at 80-120 DEG C for 1-5 hours; transferring into a ball milling tank, and carrying out mechanical ball milling for 1-5 hours at room temperature; and finally, opening the treated ball milling tank, taking out materials in the tank, sieving, separating and ball-milling zirconium beads, thereby obtaining the magnetic multi-effect adsorbent prepared from the enzymolysis residues. The magnetic multi-effect adsorbent can be used for adsorbing pollutants in wastewater, and the pollutants are anionic dyes, cationic dyes and heavy metal ions. The preparation method is simple to operate, low in cost, easy to collect and high in yield, and the prepared magnetic adsorbent realizes effective adsorption of anion fuel, cationic dye and heavy metal ions, and has important practical application value and wide market prospect.

The invention relates to a method for preparing L-methionine by recycling acetyl-DL-methionine. The method comprises the following steps: dissolving aminoacylase in an aqueous solution of acetyl-DL-methionine, performing a resolution reaction, and obtaining L-methionine Methionine crystallization and mother liquor containing acetyl-D-methionine; NaOH aqueous solution is added to the obtained mother liquor for racemization reaction to obtain a racemic liquid; the racemic liquid is cooled and the pH value of the solution is adjusted with acetic acid to obtain sodium acetate trihydrate crystals and concentrated Acetic anhydride is added to the resulting concentrated solution for acylation to obtain sodium acetate trihydrate crystals and a mother liquor containing acetyl-DL-methionine, which is used as an aqueous solution of acetyl-DL-methionine for the preparation of L-methionine. The method provided by the invention realizes the recycling of acetyl-DL-methionine, reduces waste liquid and waste solid in the process of preparing L-methionine, and realizes green production.

The invention belongs to the field of toughening of biodegradable plastics, and particularly relates to a toughening treatment method of a PHBV product. The method comprises the following specific steps: placing the PHBV product in a pressure container, sealing the pressure container, heating to an infiltration temperature of 140-180 DEG C, filling supercritical carbon dioxide to an infiltration pressure of 5-15 MPa, and then infiltrating at the infiltration temperature and the infiltration pressure for 10-60 minutes; adjusting the temperature of the pressure container to a saturation temperature for saturation, wherein the saturation temperature ranges from 60 DEG C to 120 DEG C, and the saturation time ranges from 30 min to 180 min; and releasing the pressure of the pressure container, wherein the pressure releasing rate is 0.01-1 MPa / s. According to the PHBV product toughened by the method, the tensile toughness is greater than 5MPa, the elongation at break is greater than 20%, and the impact strength is greater than 5KJ / M<2>.