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SiBCN ceramic slurry for direct-writing 3D printing and preparation method and printing method of SiBCN ceramic slurry
ActiveCN119638443Aincrease elasticityhigh densityAdditive manufacturing apparatusIncreasing energy efficiencyDirect writingSlurry
The invention discloses SiBCN ceramic slurry for direct-writing type 3D printing as well as a preparation method and a printing method of the SiBCN ceramic slurry, and belongs to the field of ceramic additive manufacturing. The invention aims to solve the problem of non-uniform selection and dispersion of SiBCN precursor filler in existing direct writing printing. And the slurry is prepared from cured polyborosilazane (PBSZ) powder, an inorganic rheological additive, a rheological synergist and a polyborosilazane (PBSZ) liquid. The preparation method comprises the following steps: 1, curing polyborosilazane (PBSZ); 2, ball-milling and crushing; (3) weighing; and 4, preparing slurry. The printing method comprises the steps of 1, printing a primary blank; and 2, curing and sintering. The SiBCN ceramic slurry for direct-writing type 3D printing and the preparation and printing thereof are provided by the invention.
Owner:HARBIN INST OF TECH
Konjac ball capable of keeping Q elasticity at low temperature and preparation method thereof
ActiveCN119405028Ahigh purityIncrease contentFood freezingFood ingredient functionsVaccinium bracteatumFruit juice
The invention discloses a konjak taro ball capable of keeping chewy at low temperature and a preparation method thereof, and belongs to the technical field of konjak taro ball preparation, the konjak taro ball comprises the following components by weight: 15-35 parts of konjak powder, 5-15 parts of tapioca flour, 1-2 parts of a sweetener, 3-5 parts of cranberry pulp, 1-3 parts of vaccinium bracteatum thunb juice, and 40-75 parts of water. Through a specific formula and a specific processing technology, the konjak balls can keep the elastic characteristic at low temperature, and the problem that the quality of the konjak balls is reduced at low temperature in the prior art is solved.
Owner:HUNAN LANTING FOOD CO LTD
Net-shaped steel structure chord member with adjustable length
ActiveCN222557826Uadjustable lengthEnhanced network structureBuilding constructionsScrew threadIndustrial engineering
Owner:CCCC RUITONG CONSTR ENG CO LTD +1
Composite corrosion inhibitor for oil field pipeline and preparation method of composite corrosion inhibitor
PendingCN121951543AEnhanced network structureImprove cohesive energyOrganic chemistryDrilling compositionThioureaSodium diphenylamine sulfonate
The invention relates to the technical field of corrosion inhibition, in particular to a composite corrosion inhibitor for an oil field pipeline and a preparation method of the composite corrosion inhibitor, and the composite corrosion inhibitor comprises an N-thiourea acetyl-ethoxylation modified imidazoline intermediate, a 2-pyridylaldehyde-diphenylamine-4-sodium sulfonate condensate, sodium cyanoboride and methanol. The preparation method comprises the following steps: carrying out cyclization, ethoxylation and thiourea acetylation on fatty acid and polyamine to prepare an N-thiourea acetyl-ethoxylation modified imidazoline intermediate, and dissolving the N-thiourea acetyl-ethoxylation modified imidazoline intermediate, 2-pyridylaldehyde, a diphenylamine-4-sodium sulfonate condensate and sodium cyanoboride in methanol according to a specific mass ratio to form the composite corrosion inhibitor. The technical problem that an oil field pipeline is poor in corrosion protection effect in a high-temperature, high-pressure, high-salinity and CO2 / H2S coexistence environment is solved, and synergistic and efficient corrosion prevention of multiple active components is achieved.
Owner:新疆海辰油气技术有限责任公司
Preparation method of organic-inorganic hybrid phase change energy storage material
ActiveCN118652668BImprove the anti-leakage effectHigh energy storage densityHeat-exchange elementsPtru catalystPolyethylene glycol
The invention discloses a preparation method of an organic-inorganic hybrid phase change energy storage material, belonging to the technical field of energy storage material processing. The invention comprises the following steps: adding polyethylene glycol, tridecanedioic acid, toluene and a catalyst into a reactor and stirring, raising the temperature of the reactor to 80-90°C, and keeping the temperature for reaction for 6-8h; during the reaction, removing by-products through a water separator, and post-processing to obtain modified polyethylene glycol. The invention improves the energy storage performance of polyethylene glycol and the outer shell structure of the phase change energy storage material by optimizing the thermal conductivity and load performance of the load carrier, thereby effectively improving the anti-leakage performance and energy storage density of the phase change energy storage material, and also improving the thermal conductivity and thermal cycle stability of the phase change energy storage material.
Owner:INSTITUTE OF APPLIED CHEMISTRY JIANGXI ACADEMY OF SCIENCES
High-temperature-resistant and high-salt-resistant gel capable of being weighted as well as preparation method and application thereof
ActiveCN119529785AImprove the blocking effectReduce floating phenomenonDrilling compositionFiberPolymer science
The invention discloses weighted high-temperature-resistant and high-salt-resistant gel as well as a preparation method and application thereof, and belongs to the technical field of temporary plugging gel for oil and gas fields. The invention relates to a high-temperature-resistant composite material which comprises the following raw materials: an ethyl acrylate-vinyl acetate copolymer or a methyl methacrylate-vinyl acetate copolymer, naphthalene-1, 4, 5-triol, a reinforced cross-linking agent, a composite salt weighting agent, modified polyvinyl alcohol fibers, an antioxidant, a synergistic antioxidant and water. The preparation method comprises the following steps: firstly, dispersing the ethyl acrylate-vinyl acetate copolymer or methyl methacrylate-vinyl acetate copolymer in water, then adding the composite salt weighting agent, the antioxidant, the synergistic antioxidant, the modified polyvinyl alcohol fiber, naphthalene-1, 4, 5-triol and other raw materials, and uniformly stirring to obtain a mixture; and reacting for 2-4 hours under the condition of 35-50 DEG C to obtain the product. The gel has relatively high density and excellent high temperature resistance and salt resistance, and is stable in plugging effect when being applied to temporary plugging or isolation leakage layers.
Owner:CHENGDU XIYOUHUAWEI SCI & TECH CO LTD
High-strength heat-resistant aluminum alloy wire and method for manufacturing the same
ActiveCN120924840BImprove conductivityImprove heat resistanceConductive materialApparatus for heat treatmentHeat resistanceSilicon
The application relates to the technical field of aluminum alloy wire manufacturing, and particularly discloses a high-strength heat-resistant aluminum alloy wire and a preparation method thereof; the high-strength heat-resistant aluminum alloy wire is composed of the following components in percentage by mass: Zr 0.1-0.2%, Fe 0.05-0.1%, Zn 0.01-0.03%, Si 0.06-0.1%, a doping substance 0.18-0.25%, the rest impurities 0.01-0.05%, and the rest is Al; the doping substance is composed of W2B and MoB2; the high-strength heat-resistant aluminum alloy wire provided by the application is optimized in the elements of zirconium (Zr), iron (Fe), zinc (Zn) and silicon (Si) and the doping substances W2B and MoB2; on the basis of maintaining good conductivity of the aluminum alloy wire, the heat resistance and tensile strength of the aluminum alloy wire are remarkably improved.
Owner:WUXI HUANENG ELECTRIC CABLE
Method for analyzing grass seed zone microorganisms by using molecular ecological network analysis platform
PendingCN119662876Aincreased complexityreduce complexityMicrobiological testing/measurementMicroorganism based processesBiotechnologyMicroorganism
The invention discloses a method for analyzing grass seed zone microorganisms by utilizing a molecular ecological network analysis platform, which comprises the following steps of: obtaining six glume microorganism samples of EI achnatherum inebrians caryopses infected by # imgabs0 # endophytic fungi and EF achnatherum inebrians caryopses not infected by # imgabs1 # endophytic fungi, treating seed epiphytic microorganism samples and in-seed microorganism samples, extracting DNA (Deoxyribonucleic Acid) and sequencing; submitting OTU and / or ASV data, obtained by sequencing, of all the microorganisms to a molecular ecological network analysis MENA platform for analysis; and then an obtained data result is uploaded to Cytoscape and / or Gephi software for analysis and drawing. According to the application, the knowledge of the network structure of the achnatherum inebrians seed zone microorganisms and the interaction relationship between the microorganisms is enhanced through network analysis, a network analysis thought is developed for the subsequent research on the microorganisms related to each part of the achnatherum inebrians, and the cognition on the microorganisms is deepened.
Owner:LANZHOU UNIV
Lightweight high-frequency wave-transparent composite material suitable for 5G high-frequency communication and preparation method thereof
InactiveCN119526787Areduce viscosityIncrease crosslink densityLamination ancillary operationsSynthetic resin layered productsGlass fiberMicrosphere
The invention relates to a lightweight high-frequency wave-transparent composite material suitable for 5G high-frequency communication and a preparation method thereof.The preparation method comprises the steps that S1, hollow glass microspheres are dispersed with a solvent, then a silane coupling agent solution is added for medium-speed stirring, the solvent is filtered out after uniform mixing, and modified hollow glass microspheres are obtained; continuously dissolving the second resin by using the solvent, adding the first resin, the cross-linking agent and the initiator into the second resin, and stirring at a high speed until the materials are uniformly mixed to obtain a mixture solution; adding the modified hollow glass microspheres into the mixture solution, stirring at a medium speed until the materials are uniformly mixed, and curing to obtain a resin glue solution; s2, soaking glass fiber cloth into the resin glue solution, taking out the glass fiber cloth after the glass fiber cloth is completely soaked, and baking the glass fiber cloth to obtain a prepreg; and S3, stacking the plurality of prepregs, and carrying out hot press molding and cooling to obtain a target product. The material has the advantages of low dielectric constant, high mechanical property and light weight.
Owner:ZHONGKE WEIHE TECH (ZHAOQING) CO LTD
A crack-resistant and wear-resistant paint and its preparation method
ActiveCN121825385Bavoid early crackingImprove compactnessPolyurea/polyurethane coatingsGrain treatmentsPolymer scienceAcrylic resin
This invention relates to the field of composite material technology and discloses a crack-resistant and wear-resistant paint and its preparation method. The method includes pretreatment of fillers, preparation of modified resin matrix, grinding of dispersing aids, crosslinking and curing stages, and aging treatment. By plasma activation treatment of ceramic microspheres, the surface activity of the filler is enhanced, and its interfacial compatibility with the resin matrix is improved, avoiding early cracking of the coating due to poor interfacial bonding. At the same time, the activated filler and nano-alumina form a gradient-dispersed reinforcing network structure in the matrix, improving the overall density and wear resistance of the coating. A composite system of epoxy-modified acrylic resin and polyurethane prepolymer is used. Through the reaction of isocyanate curing agents with the active groups in the resin during the crosslinking and curing stage, a stable structure is formed, enhancing the toughness and adhesion of the paint film, thereby inhibiting cracking and peeling of the coating during use.
Owner:福建海轮新材料科技有限公司
Method for improving step lines on surface of 3D printed product
PendingCN119463410AImprove cohesive energyreduce drippingAdditive manufacturing apparatusAdditive mnaufacturing with solid and fluid3d printMechanical engineering
The invention relates to the technical field of additive binder spray forming, and particularly discloses a method for improving step lines on the surface of a 3D printing product. The method for improving the surface step lines of the 3D printing product comprises the following specific steps that a powder material and ink mixture is loaded into 3D printing equipment, a powder bed spray head on the 3D printing equipment is used for conducting powder bed laying operation, an ink jet head is used for conducting ink jet operation, and after a layer of powder bed is laid, the ink jet head conducts ink jet around the edge of the laid powder bed. The ink mixture sprayed by the ink jet head has high diffusion amplitude and bonding capacity and can be firmly adhered to the inclined plane of a printed product in a water drop shape, dripping of the bonding material is reduced, a parabola structure is formed at the step pattern, and then the step pattern phenomenon is weakened.
Owner:SHANGHAI BIJIE ADDITIVE DIGITAL TECHNOLOGY CO LTD