22results about How to "Stable chemical structure" patented technology

The invention discloses a method for preparing a metal casting mold based on steel grit 3D printing, and belongs to the technical field of metal casting mold machining. In order to solve the technical problem that in the prior art, the mechanical strength and collapsibility of a metal casting mold need to be further improved, the method for preparing the metal casting mold based on steel grit 3D printing comprises the following steps that a sand mold three-dimensional model is established according to a metal casting, then casting mold steel grit is filled in an operation box of sand mold 3D printing equipment, and the casting mold steel grit is obtained; the binder storage tank is filled with a binder; and according to the section formation of the sand mold three-dimensional model, a sand paving system of the sand mold 3D printing equipment paves cast steel sand on a printing platform. The casting steel sand and the binder are matched with each other, the metal casting mold blank is prepared through 3D printing and then dried, the normal-temperature mechanical property and high-temperature property of the metal casting mold are effectively improved, the application range of the metal casting mold is widened, and meanwhile the collapsibility of the metal casting mold is improved.

The invention discloses a cobalt single atom-loaded zeolite molecular sieve catalyst as well as a preparation method and application thereof. The Co content in the cobalt single atom-loaded zeolite molecular sieve catalyst is 1-3 wt%. The preparation method of the zeolite molecular sieve catalyst comprises the following steps: uniformly dispersing a Co source in a solvent, adding ethylene polyamine organic amine, uniformly mixing, adding an Al source, an alkali metal source and an inorganic silicon source, uniformly mixing to obtain a mixture, reacting the mixture at 100-150 DEG C for 1-2 days to obtain reactant gel, washing the reactant gel to be neutral, and drying to obtain the zeolite molecular sieve catalyst. Calcining at 500 to 600 DEG C for 5 to 7 hours to obtain a calcined sample; the calcined sample is subjected to multiple times of ion exchange, drying is conducted after ion exchange is finished, calcination is conducted for 5-7 h at the temperature of 60-90 DEG C, and the zeolite molecular sieve catalyst loaded with the cobalt single atoms is obtained and has the efficient degradation capacity on PVC which is not acidified or alkalized or subjected to high-temperature and high-pressure treatment.

The invention relates to heteroaromatic super absorbent resin and a preparation method thereof, and belongs to the technical field of polymer synthesis. The invention provides heteroaromatic super absorbent resin. The structural formula of the heteroaromatic super absorbent resin is shown as a formula I, the heteroaromatic ring super absorbent resin does not contain a methine structure, contains more heteroaromatic ring structures, and is good in thermal stability. # imgabs0 #

The utility model relates to the technical field of downhole geophysical prospecting, specifically a kind of instrument shock absorption type storage device for downhole geophysical prospecting. Including: storage component, the storage component includes box, lid, storage, shock pad and sealing element, the lid rotationally connected on box, storage is set to the inside of box, shock pad is fixedly connected at the bottom of box, the sealing element is set to the outside of box;Protective component, the protective component is set to the inside of box and lid, and protective component includes buffer, foam pad, magic tape, limiting piece and pull rope, buffer is set to the inside of storage, foam pad is set to the inside of box and lid, magic tape is set to the outside of foam pad, limiting piece and pull rope are all set to the outside of buffer. The utility model can avoid that instrument is extruded harm, utilizes lining bushing and is wrapped with instrument protection, can reduce the impact force from each direction, improves the protection effect to instrument.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The invention discloses a primer probe combination for rapidly identifying leukemia cells and normal hematopoietic cells, a DNA methylation detection method and a kit thereof. The primer and probe combination disclosed by the invention comprises a forward primer beta-actin-F, a reverse primer beta-actin-R, a probe beta-actin-Probe, a forward primer 182-MSP-F, a reverse primer 182-MSP-R, and a probe 182-MSP-Probe. The method comprises the following steps: extracting bone marrow mononuclear cell DNA (Deoxyribose Nucleic Acid); transforming and purifying the DNA by a hydrosulfite method; the primer probe combination is adopted to detect the methylation level of the miR-182 promoter and the methylation level of the reference gene beta-actin respectively through a methylation specific fluorescent quantitative PCR method, and respective Ct values are obtained; and calculating a difference value as a distinguishing standard. The kit provided by the invention comprises the primer probe combination. According to the invention, early screening and early diagnosis of diseases can be realized, the method is simple, convenient and feasible, the specificity is high, batch detection can be realized, the result interpretation is objective and accurate, a methylation detection kit is easy to prepare, and the application prospect is good.

A tritium water-based zinc ion battery relates to the field of isotope batteries, and a positive electrode comprises a current collector, a nano-structure semiconductor film, a tritium water radiation source, an active material and a conductive material; the nano-structure semiconductor film is prepared on the current collector; the active material and the conductive material are mixed and then coated on the surface of the nano-structure semiconductor film; the tritiated water radiation source exists in one or more of the following forms: the tritiated water radiation source exists in the nano-structure semiconductor film and / or the active material in the form of crystalline tritiated water; the tritiated water exists in the electrolyte in the form of liquid tritiated water; the electrolyte is an aqueous solution containing zinc ions. Compared with a traditional metal or semiconductor high-temperature and high-pressure tritiation technology, the tritium loading process does not affect the overall physical property of a semiconductor material. And meanwhile, the chemical structure of the tritiated water is stable, the problems of migration, diffusion and escape of tritium do not exist, and the stability of the battery material is ensured.

The invention discloses a high-strength light-weight aluminum alloy and a preparation method thereof, and belongs to the technical field of aluminum alloy preparation. The high-strength light-weight aluminum alloy is composed of, by weight, 80-90 parts of composite alloy, 11-15 parts of composite organic refiner and 23-28 parts of organic coating, the composite organic refiner is prepared from graphite powder, potassium permanganate, hexadecyl ammonium bromide, 2-aminoterephthalic acid and tetrabutyl titanate, and the organic coating is prepared from 4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'- The aluminum alloy is prepared from 4, 4 '-(acetylene-1, 2-diyl) diphthalic anhydride, 4, 4'-(4, 4 '-diaminodiphenyl ether, 4, 4'-(acetylene-1, 2-diyl) diphthalic anhydride, 4, 4 '-oxybisphphthalic anhydride, 3, 4'-diaminodiphenyl ether and 3-aminophenylacetylene, and the aluminum alloy prepared through the method has excellent strength and light weight.

The invention belongs to the technical field of nano-coatings, and particularly relates to a nano-coating material for flotation and rapid defoaming as well as a preparation method and application of the nano-coating material. The nano coating material is arranged on a substrate and comprises an adhesion layer in contact with the substrate and needle-shaped synapses distributed in a jungle shape on the adhesion layer, firstly, a polymer or a mixture of the polymer and a silane coupling agent is dissolved in isopropanol to form a precursor solution, then, a liquid flame spraying method is utilized, the precursor solution is loaded into a spray gun, and the nano coating material is prepared. After being atomized by a nozzle, the nano-particles enter high-temperature and high-speed flame flow to be dispersed into nano-particles which are deposited on the surface of a matrix to form the nano-coating material, and the required nano-coating material is obtained after spraying is finished. The invention creatively provides a method for regulating and controlling mineral flotation defoaming by utilizing a nano coating material, and by applying the coating, the quick defoaming effect can be realized, the flotation efficiency is improved and the operation cost is reduced under the condition of not depending on an additional chemical defoaming agent.

This invention discloses a polyaluminum chloride-based composite flocculant and its preparation method, belonging to the field of water treatment agent technology. The preparation method includes: acid activation of natural attapulgite to obtain acid-modified nano-attapulgite crystal nuclei; hydrolysis of liquid polyaluminum chloride, basic zirconium chloride, and ferric chloride to form clusters, followed by the addition of polyepoxysuccinic acid of a specific molecular weight for dynamic shielding to obtain a shielding liquid; dispersing the crystal nuclei into the shielding liquid; and slowly adding carboxymethyl chitosan solution and anionic polyacrylamide solution sequentially at a specific rotation speed to obtain the liquid composite flocculant. This invention overcomes the problem of easy gelation of high-concentration liquid flocculants by strictly controlling the dosing sequence and the dynamic spatial shielding of polyepoxysuccinic acid; by utilizing the synergistic effect of zirconium-aluminum bimetallic flocculant and the specific chelation of carboxymethyl chitosan, excellent low-temperature and low-turbidity water removal rate is achieved while strictly controlling residual aluminum; combined with acid-modified heavy crystal nuclei, the sedimentation rate of flocs is significantly improved.

The application relates to a preparation method of a high-flow reverse osmosis composite membrane based on a finger-shaped structure base membrane and an alginate nanotube separation layer, which comprises the following steps: S1, preparation of a casting solution: the casting solution comprises 15-18 wt% of solid polysulfone, 75-82 wt% of N, N-dimethylformamide and 0.5-9 wt% of a pore former, the above raw materials are uniformly mixed and placed, defoaming and filtration are carried out to obtain the casting solution; S2, uniformly spraying the casting solution on a base membrane and placing, placing the film in a water coagulation liquid to obtain a finger-shaped porous support polysulfone base membrane; S3, coating a binary amine aqueous solution on the finger-shaped porous support polysulfone base membrane obtained in the step S2 and drying; and S4, coating a multi-component acyl halide oil phase solution on the finger-shaped porous support polysulfone base membrane in the step S3 to prepare a composite membrane. The reverse osmosis composite membrane in the application can long-term improve and maintain water flux under the condition of ensuring a relatively optimal desalination rate, so as to improve membrane separation efficiency and reduce operation cost.

The utility model relates to the technical field of sofa leather, in particular to sofa leather with high wear-resistant and corrosion-resistant effects, which comprises a thin film layer, an easy-to-clean material coating is arranged at the top of the thin film layer, a wear-resistant layer is arranged at the bottom of the thin film layer, a leather layer is arranged at the bottom of the wear-resistant layer, and a flame-retardant layer is arranged at the bottom of the leather layer. According to the improved sofa leather, the thin film layer and the wear-resistant layer are adopted, the thin film layer is made of a PVC thin film, the PVC material has certain corrosion resistance and can improve the corrosion resistance of a sofa, the wear-resistant layer is made of a polyurethane material, the polyurethane material has the advantages of high strength, wear resistance, shock absorption, radiation resistance, good air permeability resistance and the like, and the wear resistance of the sofa leather is improved; according to the fireproof sofa leather, the flame-retardant layer is adopted, the flame-retardant layer is made of the aramid fiber flame-retardant fabric, and the aramid fiber flame-retardant fabric is woven by the aramid fiber flame-retardant fibers, so that the fireproof sofa leather has the advantages of heat resistance, high strength, high wear resistance, good softness, low shrinkage, no generation of poison gas and the like, and the fireproof sofa leather has fireproof capability.

The invention belongs to the field of pesticide preparations, and particularly relates to a preparation method of a polyol oxalic acid ester polymer drug-loaded sustained and controlled release microsphere, which comprises the following steps: 1) reacting polyol, oxalyl chloride and an acid-binding agent to obtain a polyol oxalic acid ester polymer; 2) dissolving a polyol oxalate polymer and a pesticide agent in a volatile organic solvent to serve as an oil phase; dissolving a surfactant in water to serve as a water phase; (3) adding the oil phase into the water phase, carrying out high-speed shearing emulsification, and then carrying out cell disruption dispersion to obtain O / W type emulsion; and volatilizing the O / W type emulsion to remove the volatile organic solvent to obtain the polyol oxalate polymer drug-loaded sustained and controlled release microspheres. The release rate of the encapsulated medicine can be regulated and controlled, and the encapsulated medicine can be gradually collapsed in a weakly alkaline environment, so that the problem of environmental pollution caused by micro-plastic residues can be effectively avoided.

The invention relates to a halide solid electrolyte and a preparation method and application thereof. Wherein the halide solid electrolyte comprises an inner core and a shell layer coating the surface of the inner core, the chemical general formula of an inner core material is LiaMXb, the chemical general formula of a shell layer main body material is nLiX-GaF3, and a is greater than or equal to 2 and less than or equal to 4lt; b is smaller than or equal to 7, n is larger than or equal to 1 and smaller than or equal to 5, M is selected from at least one of In, Zr, Hf or lanthanide, and X is selected from at least one of Cl, Br or I. The halide solid electrolyte can maintain the stable overall chemical structure, high ionic conductivity and high electrochemical oxidation stability, and the surface of the halide solid electrolyte has good flexibility, so that the prepared battery has excellent cycle performance and rate capability.

The invention provides a treatment process of straw plaited materials and application of the straw plaited materials in a preparation bag, and relates to the technical field of straw plaited materials. The treatment process of the straw plaited material comprises the following steps: removing impurities and dead leaves from straw stems without diseases and insect pests as raw materials, and rinsing with water; soaking for 2-3 hours by using a potassium permanganate aqueous solution with the mass concentration of 0.5-1%, and washing for 3-5 minutes by using water after soaking; boiling the straw stalks treated by the potassium permanganate aqueous solution in a softening agent for 1-2 hours; soaking the straw stalks treated by the softener in an enhancer for 3-5 hours, and then washing the residual enhancer on the surface by using clear water; and drying the straw stalks treated by the reinforcer in a drying machine at the temperature of 40-50 DEG C until the water content is 6-8%. According to the treatment process of the straw plaited material, the toughness and the strength of the treated material can be effectively improved while the anti-corrosion performance of the straw plaited material is improved.

The utility model discloses a soft package battery convenient for heat dissipation, which comprises a heat dissipation shell, a lithium battery body and two tabs, the lithium battery body is arranged in the heat dissipation shell, the tabs are fixedly arranged on one side of the lithium battery body, and the tabs are arranged in the heat dissipation shell. The heat dissipation shell comprises a second heat dissipation layer, a base layer, a first heat dissipation layer, a heat conduction type polyimide film and a coating layer, the second heat dissipation layer is arranged on the surface of the base layer, the heat conduction type polyimide film is arranged on the surface of the second heat dissipation layer, and the first heat dissipation layer is arranged on the inner surface of the base layer. The soft package battery convenient for heat dissipation provided by the utility model has the advantage of good heat dissipation effect, and solves the problems that in the working process, the soft package battery is high in heat generation speed and high in heat accumulation degree, if the heat cannot be conducted out in time, the lithium battery expands, the working capability and the service life of the lithium battery are greatly influenced, and the service life of the lithium battery is influenced. And even explosion caused by thermal runaway can occur in severe cases.

The invention relates to the technical field of medicines, and discloses a preparation method of bergamolactone nanocrystals, which comprises the following steps: S1, weighing bergamolactone and a stabilizer according to a mass ratio of 5: (1-4), then adding a proper amount of an organic solvent for dissolving, and then removing the organic solvent by adopting a reduced pressure rotary evaporation process to obtain a medicine / stabilizer film; s2, performing hydration treatment on the drug / stabilizer film obtained in the S1 to obtain a drug solution; s3, after hydration is completed, the medicine solution in the S2 is subjected to dispersion treatment, and a medicine suspension is prepared; and S4, adding the medicine suspension prepared in the S3 into a medium grinding chamber, and carrying out grinding treatment to obtain a BER nanocrystalline suspension, namely BER-NCs. According to the technical scheme, the problems of low solubility and poor bioavailability of bergamolactone in water can be solved.

The invention discloses a lac terpenoic acid-based adhesive, a preparation method and application thereof, the lac terpenoic acid-based adhesive is prepared by carrying out cross-linking reaction on lac terpenoic acid LTA and a cross-linking agent, and the cross-linking agent is melamine, urea, polyethylene glycol, ethylenediamine or triethylene tetramine. The adhesive A-LTA prepared by taking refined shellac terpene acid as a raw material and reacting with melamine is a novel thermocurable adhesive, has high bonding performance, has high bonding strength and bending strength on stainless steel, aluminum, toughened glass, bamboo, poplar and other base materials in a wider thermocuring temperature range, has good bonding stability, and can be widely applied to the field of thermal curing of the base materials such as the stainless steel, the aluminum, the toughened glass, the bamboo, the poplar and the like. The adhesive can maintain a strong and effective bonding effect after being soaked in strong acid, strong alkali, water and organic solvents for 7 days, has strong resistance to severe external environment, can be widely applied to industrial production and environmental protection, and has huge application potential as a multifunctional adhesive.

The present invention discloses a preparation method and application of an ultra-thin nickel-aluminum hydrotalcite sheet material, and belongs to the technical field of heavy metal pollutant removal. In the present invention, by introducing formamide and microwaves in the synthesis process of nickel-aluminum hydrotalcite, the accumulation of sheets is significantly suppressed, the thickness of the sheets is reduced, and the adsorption capacity of hexavalent chromium is enhanced. Nickel, as the main active component, has unique chemical properties, such as excellent redox ability and stable chemical structure, so that NiAl-LDH shows excellent effects in removing heavy metal ions. The NiAl-LDH material prepared by this method can be widely used in the fields of water treatment and soil remediation, especially in the removal of toxic hexavalent chromium. This material is not only suitable for industrial wastewater treatment, but also suitable for the remediation of contaminated soil, providing an effective and reliable solution for environmental protection.

The application discloses an antibacterial color master batch and a preparation method thereof, and belongs to the technical field of high polymer materials. The antibacterial color master batch comprises the following raw materials in parts by mass: low-density polyethylene 60-80 parts, antibacterial filler 1-8 parts, antioxidant 1-3 parts, dispersing agent 0.1-1 part and color powder 10-20 parts. The antibacterial filler is obtained through addition reaction of amino silane modified jade powder and tri(acryloxyethyl) phosphate imidazole derivative; and the tri(acryloxyethyl) phosphate imidazole derivative is obtained through addition reaction of tri(acryloxyethyl) phosphate and imidazole. The antibacterial filler is added in the antibacterial color master batch, the antibacterial filler contains jade powder, phosphate groups and imidazole rings, and the antibacterial filler is combined through multiple antibacterial mechanisms, so that the bactericidal effect is enhanced, the color master batch is endowed with good flame-retardant performance, the antibacterial filler has good compatibility with resin, and the antibacterial color master batch has persistent and stable antibacterial effect and good heat-resistant and flame-retardant performance.

The invention relates to the field of C10M169 / 00, in particular to pre-coating oil for a high-lubrication type aluminum ring-pull can material and a preparation method of the pre-coating oil. The pre-coating oil for the high-lubrication type aluminum ring-pull can material is prepared from the following raw materials in parts by mass: 80-90 parts of polyol ester base oil, 1-5 parts of an emulsifier, 1-5 parts of a penetrant, 0.1-1 part of a lubricant, 1-5 parts of an antirust agent and 1-5 parts of an antioxidant. The pre-coating oil provided by the invention is wide in raw material source and has certain environment-friendly performance; the preparation method is relatively simple, only according to a certain feeding sequence, the materials are fed, mixed and dispersed, and complicated and expensive instruments and equipment are not needed; the product has excellent lubricating property and adhesion property, has no residual oil after being cleaned, and is especially suitable for aluminum ring-pull cans.

The present invention relates to the field of organic electroluminescent materials, and in particular to a fluorene-based compound and an organic electroluminescent device. The chemical structure of the compound is that the compound of the present invention has good carrier transport properties, a stable chemical structure, and simple molecular synthesis. When different types of aromatic or heteroaromatic groups are connected, the frontier orbital energy level and the triplet energy level can be regulated in a large range, and can be used as a variety of functional materials such as a main material of a light-emitting layer, a hole blocking layer material, and an electron transport layer material. This type of material is applied to OLED devices, and the luminous efficiency and life are improved, while the production cost is reduced.