70results about How to "High Strength Mechanical Properties" patented technology

A microporous polyethylene battery separator material (212), for use in a flooded-cell type lead-acid battery, benefits from increased porosity, enhanced wettability, and exceptionally low electrical resistance when an electrolyte-soluble pore former is employed in the manufacturing process. The pore former (210) is soluble in electrolytic fluid and therefore dissolves in-situ in sulfuric acid during battery assembly. The dissolution of the pore former leaves behind additional, larger voids (220) in the separator material and thereby enhances ionic diffusion and improves battery performance.

17-4PH steel pipe manufacturing method includes the following steps: a. thermal processing and pipe blank heat perforating: heating temperature is 1090 ~ 1150 degree C and insulation time is 15 ~ 35 minutes; b. softening heat treatment: temperature is 650 ~ 700 degree C, insulation time is 4~5.5 hours; c. cold-working: cold rolling; d. softening heat treatment: temperature is 650 ~ 700 degree C, insulation time is 4 ~ 5.5 hours; e. acid-washing; f. repeating steps c ~ e cycles rolling until finished product size; g . finished product heat treatment: solid solution treatment 1020 ~ 1050 degree C +15 ~30 minutes, precipitation hardening treatment 450-630DEG C+3.5-4.5 hours, the finished product forms precipitation hardening martensitic structure with high strength and excellent corrosion resistance; h. finished product acid-washing. The invention replaces the original pipe elements art through boring and turning the pipe elements to reaching the required diameter and wall thickness with the technology of cold-working to getting the required diameter and wall thickness after heat perforating, it shortens production cycles, reduces production costs, improves product metal yield rate and increases economic efficiency.

The invention discloses a high-performance prestressing duct grouting agent which is prepared by the following components, by weight, 1-10% of water reduction component, 15-40% of water retention component, 1-10% of plastic-reserving component, 0.03-0.3% of tackifying component, 0-0.5% of delayed coagulation component, 0.1-1% of plasticity expansion component and 50-70% of later-stage volume expansion component. By mixing the high-performance prestressing duct grouting agent into cement according to a ratio of 10%, grout can obtain high mobility and high plasticity stability, a segregation layering phenomenon is greatly reduced, bleeding is avoided, and grouting is full. Whole-process volume stability of the prepared grout is high, micro expansion of plasticity and hardening stages can effectively compensate various contractions. Early strength and high-strength performance of the grout are prominent, durability is good, and the grout is applicable to various prestressing duct constructions. Simultaneously, bag-packaged additives are even in composition compared with additives prepared on the spot, transportation and comprehensive cost is low, and technical economical benefit is remarkable.

The invention discloses a FeVO4/TiO2 porous catalyst film layer material for photo-Fenton combined catalysis and a preparation method of the FeVO4/TiO2 porous catalyst film layer material, belongs tothe technical field of photo-Fenton combined catalytic material preparation. Aiming at the lack of a method and a catalyst capable of efficiently combining photocatalysis and Fenton reaction at present, a micro-arc oxidation method is utilized; a TiO2 film layer containing Fe and V is generated on the surface of a titanium substrate, then the FeVO4/TiO2 porous catalyst film layer material is obtained through roasting in a protective atmosphere, photocatalysis and Fenton reaction are successfully and efficiently combined together, and the efficient catalyst capable of being used for degrading organic pollutants is obtained.

The invention discloses a high-performance and low-cost titanium alloy. The high-performance and low-cost titanium alloy is composed of the following components of, in percentage by mass, 4.3%-6.6% of Al, 2.0%-3.0% of V, 2.6%-3.2% of Mo, 1.6%-2.1% of Fe and the balance Ti and inevitable impurities, wherein the titanium alloy takes 1-grade titanium sponge, iron-molybdenum alloy, pure aluminum and TC4 recycled materials as raw materials and is obtained through a method of electron beam cold bed smelting. According to the high-performance and low-cost titanium alloy, the electron beam cold bed smelting method is adopted, and through the adding of the raw materials such as titanium sponge and the iron-molybdenum alloy which are not prone to causing high-density sinking and low-density volatilizing, so that non-uniformity of elements in the titanium alloy during the smelting process is avoided; meanwhile, large-scale utilization of the TC4 recycled material is realized, and the raw material cost is greatly reduced; in addition, the performance of the titanium alloy meets requirements of high strength and high dynamic bearing capacity of titanium alloy structural members in the military and civilian fields.

The invention discloses polyethylene glycol/gelatin particle dual-network hydrogel based on dual-network design and a preparation method thereof. Gelatin particles capable of dissipating energy of a network and polyethylene glycol macromolecules capable of keeping the structural integrity of the hydrogel are used, and the hydrogel material with high mechanical properties is formed on the basis ofa double-network design, when the polymer network is not formed, the reversible physical interaction between the colloidal gel materials endows the hydrogel with excellent shear thinning and self-repairing properties, and after the polymer network is formed, the mechanical properties of the hydrogel are obviously enhanced, and the hydrogel has printability and biocompatibility and has huge application potential in tissue engineering and regenerative medicine.

The invention discloses a preparation method for titanium-based composite material with a graphene-rare earth mixed micro-structure. The method comprises the following steps: firstly, preparing graphene dispersion liquid; secondly, mixing a substance containing a rare earth element with titanium-based powder to obtain rare earth-titanium-based mixed powder; thirdly, adding the graphene dispersionliquid to the rare earth-titanium-based mixed powder, and drying the mixture to obtain three-element mixed powder; fourthly, performing sinter molding on the three-element mixed powder to obtain the titanium-based composite material with the graphene-rare earth mixed micro-structure. According to the method, the three-element mixed powder with the graphene-rare earth mixed micro-structure is prepared by two-step mixing, and the titanium-based composite material with the graphene-rare earth mixed micro-structure is prepared by sintering. Spherical particles of the substance containing the rareearth element play roles in dispersion strengthening and crystal boundary strengthening; in-situ synthesis titanium carbide plays a dispersion strengthening role; the graphene plays a load transmitting role; through collaboration of the three elements, the strength mechanical property of the titanium-based composite material with the graphene-rare earth mixed micro-structure are greatly improved.

The invention discloses biomedical electric activity water gel and a preparation method thereof, and relates to the field of high molecular materials, in particular to the biomedical electric activitywater gel and the preparation method thereof. The biomedical electric activity water gel can be prepared by the method with steps of using natural and non-toxic compounds of glycine and choline to form ion liquid; then using acrylic acid to modify ion liquid; forming vinyl choline-glycine ion liquid monomers; using N, N-methylene bisacrylamide (MBAA) as crosslinking agents; using potassium peroxodisulfate (KPS) as initiators; preparing polyionic liquid gel through free radical polymerization; using the polyionic liquid gel as a first gel network; using American FDA authenticated polyethyleneglycol (PEG) as reaction monomers of a second gel network; using N, N-methylene bisacrylamide (MBAA) as the crosslinking agents; uisng potassium peroxodisulfate (KPS) as the initiators; forming the electric activity gel with the high mechanical strength with the first gel network. The gel has good biocompatibility and biodegradability and can be used in the fields of nerve tissue engineering, myocardiac tissue engineering and the like.

The invention discloses a preparation method of a special membrane material for a mining air drum. The preparation method comprises the following steps of: unreeling base cloth; selecting raw material components for preparing the covering membrane material, and then burdening and mixing; respectively plasticizing the covering membrane material through two extruders, then outflowing from two tape casting molds to form hot melt membrane, simultaneously casting the hot melt membrane on the two sides of the base cloth by the two tap casting molds, and carrying out hot melt composition by a hot melt composition device; and drawing and cooling the membrane material subjected to hot melt composition to obtain the finished product. Simultaneously, the invention discloses a device for preparing the special membrane material for the mining air drum. Compared with the prior art, the method and the device have the characteristics of little investment and energy saving. The covering membrane material is simultaneously cast on the two sides of the preheated base cloth, so that one-time molding is realized, heating composition only needs to be carried out once, and the operation of repeated heating and cooling is omitted, thus lots of heat and manual labor are saved, the cost is also saved, and moreover, the purpose of energy saving is realized.

The invention provides a multi-element composite anti-oxidation Ti2AlNb alloy and a preparation method thereof. The alloy contains chemical elements by weight percentage: Al: 20%-25%, Nb: 20%-23%, W:0.1%-1.5%, Zr: 1%-3%, Si: 0.1%-1%, Ta: 0.1%-2%, W + Zr + Si + Ta: 1.5%-7.5%, and the balance of Ti. The preparation method comprises courses of alloy proportioning, smelting, cogging and forging, wherein a method for arranging a piezoelectric electrode on an alloy with high-melting-point alloy elements in a distributed manner is used for alloy proportioning; a three-vacuum self-consumption smelting technology is used for the smelting process; a method of homogenizing thermal treatment + extrusion clogging is used for the clogging process; and multi-phase area alternate forging method is adopted for the forging process. According to the invention, alloy elements such as W, Zr, Si and Ta are added in a Ti-Al-Nb system; the smelting and forging technologies with alloy composition homogenization and organizational homogenization are combined; high-temperature oxidation resistance of the Ti2AlNb alloy is enhanced obviously; and high-strength mechanical performance is improved.

The invention discloses a high-flexibility tensile flame-retardant fireproof shielding towline cable comprising a tensile element which is arranged at the center of the cable. The tensile element is externally provided with a first cable core layer and a second cable core layer in turn. The second cable core layer is externally wrapped by a first smooth polyester film isolation layer. The smooth polyester film isolation layer is externally extruded by a fireproof lining layer. The fireproof lining layer is externally provided with a copper foil wire braided shielding reinforced layer. The copper foil wire braided shielding reinforced layer is externally wrapped by a second smooth polyester film isolation layer. The second smooth polyester film isolation layer is externally extruded by a composite TPU elastomer sheath layer. The gap between the tensile element, the first cable core layer and the second cable core layer is filled with fibers. The high-flexibility tensile flame-retardantfireproof shielding towline cable has the characteristics of being high-flexibility, tensile, fireproof, long in service life and high in reliability so that the use requirements of the modern intelligent industrial electronic system can be met.

The invention discloses a low-cost short-process manufacture technique for a high-strength rare earth magnesium alloy plate, belonging to the field of metal material machining. The manufacture technique is characterized in that a low-rare earth-content Mg-Gd-Er-Zr alloy ingot casting is directly subjected to hot rolling with the total pressing amount of 85-97%, so that the high-strength magnesium alloy plate with uniformly and dispersedly distributed strengthening phase Mg5 (Gd, Er) and refined grain structures (with the grain size smaller than 10 mu m) is obtained. The manufacture technique has the characteristics that cost is low; efficiency is high; and alloy strength is high. The manufacture technique can be practically applied to various bearing structure components in the fields of automobiles, aerospace and the like.

The invention discloses a preparation method of rare earth modified high-intensity non-woven fabrics. The preparation method comprises the following operating steps of (1) adding lutecium chloride andthulium chloride to water, then continuing adding sodium napthionate to the water, performing uniform mixing and stirring so as to obtain a mixture, raising the temperature of the mixture, and performing heat preservation so as to obtain rare earth naphthenates; (2) uniformly mixing the rare earth naphthenates with nanometer lutecium oxide, nanometer thulium oxide, sodium methallyl sulfonate andethylenediamine base propanesulfonate so as to obtain resin modifying agents; and (3) uniformly mixing polybutylene terephthalate slices with the resin modifying agents and a flow modifier to obtain anew mixture, adding the new mixture to a slice pelleting machine, performing co-mixing and granulation to obtain PBT master batches, adding the PBT master batches and the polybutylene terephthalate slices to dissolving and spraying equipment in the mass ratio of the PBT master batches to the polybutylene terephthalate slices being 1 to (15-20), and performing melt spinning and knitting so as to obtain the rare earth modified high-intensity non-woven fabrics. The non-woven fabrics prepared by the preparation method disclosed by the invention have good mechanical properties, and can be used under various high-intensity conditions.

The invention relates to an in-service drainage pipeline trenchless plastic spraying repair material and a preparation method thereof. The preparation method comprises the following steps of: mixing acementing material, quartz sand, modified zeolite powder, latex powder, polyvinyl alcohol, a fiber material, a water-retaining agent, epoxy resin and a retarder, and then mixing the mixture with a mixture of a wetting agent, a curing agent and water to obtain the in-service drainage pipeline trenchless plastic spraying repair material. The plastic spraying repair material can be used under the condition of normal drainage of a pipeline, the repair efficiency is ensured, the construction quality is improved, and the effectiveness and reliability of trenchless repair of an in-service defectivedrainage pipeline are ensured. The problems of leakage, corrosion and damage of underground pipelines can be efficiently solved, and the situation that the pipelines are shut down is avoided. The construction cost in drainage pipeline repair is effectively reduced. The repaired pipeline is smooth and flat in surface and uniform in thickness, the impermeability and the corrosion resistance are effectively improved, and actual operation of the underground pipeline can be met.

The invention provides application of an iron-based cellulose nano composite material in a water environment. The iron-based cellulose nano composite material is used for adsorbing and reducing heavy metal ions in a water environment; and the iron-based cellulose nano composite material is of a three-dimensional network structure composed of nano cellulose and nano zero-valent iron, wherein the diameter of the iron-based cellulose nano composite material is 5-70 nm, and the particle size of the iron-based cellulose nano composite material is 300-1000 nm. The iron-based cellulose nano composite material provided by the invention has the advantages of large specific surface area and high heavy metal adsorption and reduction capability, the dispersity of nano zero-valent iron in a water environment is effectively improved, and the in-situ synthesis method is simple to operate and can be recycled, so that heavy metal ions in the water environment can be efficiently removed.

The invention discloses a preparation method of double-network hydrogel. The preparation method comprises steps as follows: firstly, agar, acrylamide and a photoinitiator are added to a first reactor,then acrylic acid and first raw water accounting for 90% of total amount of water are added, agar is taken as a first layer and combined by hydrogen bonds, and a first-layer network is formed. Synergistic coordination of ions is realized while free radical polymerization of the double-network hydrogel is performed, the synergistic coordination effect is realized by introducing iron ions on the basis of the optimal second-layer network, one novel second-layer network with chemical and physical joint interaction is synthesized to obtain the hydrogel by polymerization, the synergistic coordination of the ions is realized while free radical polymerization of the double-network hydrogel is performed, and the hydrogel has mechanical properties such as fatigue resistance, self-recovery, high tensile strength and high compression.

The invention discloses an alloy microscopy vascular clamp with the antiallergic function. The alloy material comprises, by weight, 100 parts of Fe, 15-30 parts of Pd, 15-20 parts of Ru, 3-10 parts of Zr, 2-6 parts of Mo, 1-5 parts of Ge, 0.5-2 parts of Sn and 0.2-2 parts of tungsten. According to the alloy microscopy vascular clamp with the antiallergic function, the needed high precision and high-strength mechanical performance is guaranteed, the very strong biological affinity is achieved, the irritation to the vessels and other cell tissues of the human body is weak, and using is safer.