32results about How to "Meet toughness" patented technology

The invention discloses a method for preparing flame-retardant waterborne polyurethane containing phosphaphenanthrene and/or phenyl phosphate groups. The method is characterized by comprising the following step of reacting dihydric alcohol as a reactant which contains phosphaphenanthrene and/or phenyl phosphate groups and of which the hydroxyl groups are symmetric with diisocyanate, macromolecular dihydric alcohol, anionic or cationic hydrophilic chain extender and the like to synthesize flame-retardant waterborne polyurethane. According to the method, since flame-retardant dihydric alcohol is used as one of chain extenders, flame-retardant dihydric alcohol ca partially or totally substitute other small molecular chain extenders, phosphorus-containing flame-retardant groups are controllable in content and difficult to migrate and are evenly distributed, and the flame-retardant property of waterborne polyurethane can be enduringly retained. According to the structural characteristics of selected flame-retardant dihydric alcohol, by virtue of one and a combination of two or more of flame-retardant groups, phosphorus in the flame-retardant groups can be alone located at a main chain, side chains or simultaneously located at the main chain and the side chains of the polyurethane molecule chain as desired so as to meet the requirements of different flame-retardant properties or other properties such as mechanics, toughness and plasticity.

The invention relates to a manufacturing method of vehicle seamless steel tubes. Surface quality of finished products can be improved through twice phosphorus acid saponification processing and secondary cold drawing processing; during manufacturing, external and internal quality of the products can be guaranteed through twice test, performance index of the steel tubes with the tensile strength larger than or equal to 500Mpa and extension larger then or equal to 10% and internal and external surface roughness smaller than or equal to 0.4 micrometers can be achieved by directly using saw cutting without heat treatment and mechanical machining, requirements of the steel tubes of vehicle parts on strength, toughness and surface quality are met, and meanwhile, technical requirement of processing-free steel tube parent materials of the vehicle parts can be met.

The invention relates to a melt spinning method for a high-strength high-modulus polyvinyl alcohol fiber, comprising the following steps: uniformly mixing polyvinyl alcohol, water and an amide compound, and then, sufficiently swelling; adding the sufficiently swelled polyvinyl alcohol into a twin screw extruder, sufficiently melting, then extruding, and cooling the melt trickle through air blowing to form a nascent fiber; and drying the prepared nascent fiber through a hot-air oven, and then carrying out multistage stretching and tension heat setting to form the polyvinyl alcohol fiber. By using the preparation method of the polyvinyl alcohol fiber provided by the invention, melt spinning and high stretching of the polyvinyl alcohol are realized through hydrogen bond compounding among molecules of the water, the amide compound and the polyvinyl alcohol, and the prepared polyvinyl alcohol fiber has excellent mechanical property; and the melt spinning method is simple in production process, little in environment pollution and low in production cost; and the polyvinyl alcohol fiber prepared by using the method has the advantages of controllable fineness, high strength and high modulus so as to be widely applied to the field of civil engineering concrete.

The invention relates to the technical field of aluminum alloy production, in particular to a novel aluminum alloy material and a production process thereof. The novel aluminum alloy material comprises, by mass percentage, 0.05-0.22 wt% of nickel, 0.8-1.6 wt% of chromium, 0.024-0.032 wt% of manganese, 0.78-1.5 wt% of magnesium, 0.66-1.65 wt% of silicon, 0.45-1.2 wt% of iron, 3.5-5.8 wt% of copper, 4.8-6.5 wt% of zinc, and the balance aluminum and other inevitable impurities. The mechanical property and mechanics property of the novel aluminum alloy material are excellent, and the surface of an aluminum alloy profile can be effectively protected against scratches; and in addition, the process is simple and reasonable, and the production efficiency is high.

The invention discloses a B-grade anti-acid pipeline steel plate. The chemical composition of the B-grade anti-acid pipeline steel plate comprise the following in mass percentage: 0.010-0.040% of C, 0.10-0.30% of Si, 0.80-0.90% of Mn, no more than 0.015% of P, no more than 0.0010% of S, 0.10-0.20% of Ni, 0.10-0.20% of Cu, 0.020-0.040% of Nb, 0.08-0.15% of Mo, 0.010-0.020% of Ti, 0.001-0.003% of Ca, 0.010-0.040% of Al, the balance Fe, inevitable impurities, 0.16-0.23% of Ceq, and 0.07-0.13% of Pcm. The invention uses a small amount of Nb alloy element, the tax refund treatment is conducted on the Mo element, the production cost is effectively reduced, and the product anti-acid corrosion resistance requirements are met.

The invention relates to an economical 900MPa-grade ultrahigh-strength quenched and tempered steel plate. The steel plate comprises the following chemical components in percentage by mass: 0.155-0.175% of C, 0.10-0.30% of Si; 1.20-1.40% of Mn, less than or equal to 0.013% of P, less than or equal to 0.003% of S, 0.020-0.030% of Nb, 0.010-0.020% of Ti, 0.20-0.40% of Cr, 0.30-0.40% of Mo, 0.0010-0.0020% of B, 0.015-0.050% of Als, and the balance of Fe and other inevitable impurities. The invention further relates to a production method of the economical 900MPa-grade ultrahigh-strength quenched and tempered steel plate. In the heating process, a continuous casting billet is heated in a heating furnace, a high-temperature rolling and heating process is adopted, it is ensured that all alloy elements are completely dissolved, the temperature of a heating section is 1230-1270 DEG C, the temperature of a soaking section is 1210-1250 DEG C, and the total heating time coefficient is 9-10 min/cm.By optimizing the component design and improving the process, the 900MPa-grade ultrahigh-strength quenched and tempered steel plate which is excellent in strength and toughness, uniform in internal structure, good in welding performance and low in cost is produced.

The invention relates to the technical field of seamless steel pipes, in particular to a seamless steel pipe for a ship and a preparing method of the seamless steel pipe. Chemical components of the seamless steel pipe comprise, by weight percentage, 0.12% to 0.2% of C, 0.18% to 0.32% of Si, 1.18% to 1.8% of Mn, 0.2% to 0.4% of Mo, 11.6% to 12.2% of Cr, 0.2% to 0.3% of Ti, 0.45% to 0.58% of V, 0.32% to 0.48% of Re, 0.02% to 0.05% of Al, 0.0008% to 0.018% of B, 0.008% to 0.01% of N, not larger than 0.02% of P, not larger than 0.02% of S, not larger than 0.003% of O and the balance Fe and inevitable impurities. The sum of mass percentages of all components is 100; the steel pipe tensile strength of the seamless steel pipe is larger than or equal to 900 Mpa, the steel pipe elongation is larger than or equal to 10%, the inner and outer surface roughness is smaller than or equal to 0.4 micrometer, and the requirements of the steel pipe special for the ship on strength, toughness and surface quality are met; and the experiment shows that compared with a conventional seamless steel pipe, the seamless steel pipe for the ship has the beneficial effects that the production efficiency is improved, and the production cost is reduced.

A plastic housing manufacturing method and a product thereof. The method comprises the following steps: (1) providing a high temperature resistant film, performing punching positioning of the high temperature resistant film; (2) performing silk-screen printing of a printing ink layer on the high temperature resistant film to form an IMF film; (3) performing high-pressure molding of the IMF film; (4) punching the IMF film after high-pressure molding; (5) putting the punched IMF film in an injection mold, performing injection molding of high-rigidity plastics, and allowing the IMF film to be subjected to transfer printing to the surface of the high-rigidity plastic product during injection molding. The plastic housing product is a product manufactured by the plastic housing manufacturing method.

The invention relates to a fiber reinforced flexible aerogel composite material and a preparation method thereof, and belongs to the technical field of composite material preparation. According to thecomposite material, fiber-reinforced flexible aerogel which has the advantages of being high in strength, good in toughness, strong in shape retention ability and good in processing ability when being compared with existing resin-based composite materials is adopted, so that the problems that the traditional fiber-reinforced aerogel composite materials are limited in shaping size, poor in toughness and difficult to process are solved, and the application field of the fiber-reinforced aerogel is greatly expanded.

The invention discloses a special tool for cleaning a special-shaped spinneret orifice. The tool comprises a through needle (1) and an operation rod (2), wherein one end of the through needle (1) stretches into an end of the operation rod (2) and is fixed through a screw. The thickness of the through needle (1) is 0.06 mm, the width of the through needle is 0.12 mm, and the length of the through needle is 25 mm. The length of the operation rod (2) is 70 mm. The through needle (1) is a silver needle. When the tool is used, the yarn outlet face of a spinneret plate faces upwards, the operation rod is held by hand, the miniature through needle is lightly inserted into the spinneret orifice and moves upward, downward, frontward and backward, and therefore sundries attached to the inner wall of the spinneret orifice can be cleaned out.

The invention discloses a cable three-dimensional forming method and a cable three-dimensional forming device. The method comprises the following steps of: 1, fixing the terminal of a wire bundle, coating a glue solution and curing; 2, carding the wire bundle so as to flatten the wire bundle; and 3, uniformly coating the glue solution on the to-be-cured part of the wire bundle so as to cure the wire bundle. The device comprises a base, a locating slot, a press plate, a locating hole and a locating pin, wherein the locating slot is fixed on the base; the press plate is arranged on the locating slot and can move in the locating slot; the locating hole is formed at the side face of the base and positioned above the press plate; the locating pin is matched with the locating hole; and the press plate is fixed by the locating pin. By utilizing the method and the device, flexible wires with multiple diameter specifications can be realized; by virtue of three-dimensional forming on the basis of the structural size and spatial shape of a cable slot, the wires are effectively protected from being damaged during the assembly process; and the cable is time-saving and reliable in assembly.

The invention relates to a cereals alcohol-soluble protein conduit and a preparation method thereof in the field of biomedical technology; the method comprises the following steps: cereals alcohol-soluble protein and organic solvents are mixed to obtain protein solution; after the protein solution is extracted by a mold, drying treatment is carried out and the protein pipe is demoulded from the mold; secondary extraction is carried out to the protein pipe, so as to form a nanoscale spherical structure surface outside, and then form fixation is carried out; finally, conducting polymer is deposited on the protein conduit surface, so as to prepare the conductive cereals alcohol-soluble protein conduit. In the invention, the cereals alcohol-soluble protein is used as raw materials, and the protein conduit has good biocompatibility and degradation, is suitable for preparing tissue engineering conduits and is helpful for regeneration and functional rehabilitation of damaged tubular shaped soft tissues.

The present invention provides an electronic tag inserting piece. The electronic tag inserting piece comprises a substrate, a chip and a connecting line, wherein an upper surface of the substrate is provided with an inner groove, a surface of the inner groove is provided with a conductive layer, and the chip is disposed on the substrate and is connected to the conductive layer on the surface of the inner groove via the connecting line. The substrate of the electronic tag inserting piece is manufactured by a splicing method of injection molding and is detected; the conductive layer of the electronic tag inserting piece is an aluminum layer; and after plating a film on the substrate of the electronic tag inserting piec, removing the conductive layer, such as the aluminium layer, on the upper surface of the substrate, and leaving the conductive layer on the inner grove as an antenna. According to the texture and composition of the substrate, the tag inserting piece can easily meet various requirements, such as fragility, high temperature resistance, high tenacity, high strength and the like; batch production of tags can be easily achieved; and not only performance of the tags can be guaranteed, but also techniques such as PCB production, milling cutter cutting, etching and the like are not required, thereby simplifying the technique process.

The invention relates to a production process of a high-temperature structural ceramic/metal composite material tube for an aluminum alloy die casting machine. The composite material tube comprises a ceramic lining, a metal jacket and an end cover. The production process of the composite material tube comprises the steps of machining the ceramic lining, machining the metal jacket and the end cover, and assembling and matching the ceramic lining, the metal jacket and the end cover. A ceramic lining machining process comprises the steps of raw material preparation, grinding and pulping, workpiece forming, green body drying, high-temperature firing and inner and outer circle machining. A metal jacket and end cover machining process comprises the steps of metal tube and end cover cutting and blanking, metal tube and end cover inner and outer circle rough machining, heat treatment and metal tube and end cover inner and outer circle finish machining. A ceramic lining, metal jacket and end cover assembling and matching process includes the steps of measurement inspection, combined assembly and thermal adaptation testing. A metal tube and a ceramic tube are compounded, so that the alloy melt corrosion resistance and the wear resistance of the material tube are greatly improved, and the service life is long; the composite material tube is low in heat conductivity coefficient, and energy consumption is reduced; and strength and toughness are good, the manufacturing cost is low, and production period is short.

The invention discloses 3D printing metal powder for dental fixed-removable restoration and a preparation method thereof. The 3D printing metal powder for dental fixed-removable restoration comprises,by mass, 20-30% of Cr, 1-5% of Mo, 5-10% of W, less than or equal to 1% of Fe, less than or equal to 1% of Mn, less than or equal to 2% of Si, less than or equal to 0.1% of Ni, less than or equal to1% of C, less than or equal to 0.1% of Be, less than or equal to 0.1% of Cd, and Co as a matrix. The preparation method of the 3D printing metal powder for dental fixed-removable restoration comprisesthe specific steps of (1) conducting smelting, specifically, mixing prepared chemical components, preparing a master alloy ingot through vacuum induction smelting and cutting off the shrinkage cavitydefect at the head; and conducting homogenizing heat treatment on the master alloy ingot through a vacuum heat treatment furnace; (2) conducting atomization pulverizing; (3) conducting screening to obtain spherical alloy powder; (4) conducting selective laser melting forming; and (5) conducting heat treatment. Through the 3D printing metal powder for dental fixed-removable restoration and the preparation method thereof, the requirements for properties of a fixed-removable restoration body can be met.

The invention discloses an inorganic aggregate polyurethane millstone floor as well as a preparation method and application thereof. The millstone floor sequentially comprises a polyurethane substrate layer, an inorganic aggregate polyurethane millstone layer and a polyurethane transparent surface layer from inside to outside, the inorganic aggregate polyurethane millstone layer is formed by paving a polyol polyurethane self-leveling coating, a diisocyanate curing agent and an inorganic aggregate according to the mass ratio of 1: 1.25: 6, and the inorganic aggregate is selected from recycled glass, marble powder or stone with regular shapes. The polyol polyurethane self-leveling coating is composed of polyol polyurethane resin and a functional aid in a mass ratio of 19: 1. The inorganic aggregate polyurethane millstone terrace belongs to a noise reduction terrace system which is soundproof, seamless and ergonomic, is attractive and comfortable in visual effect, meets the use requirements of high strength, toughness and difficulty in cracking, is convenient to construct and maintain in the later period, is environment-friendly and safe, and can be applied to the ground of public places such as exhibition halls, medical treatment, education, office, entertainment or retail.

The invention discloses a 355MPa-grade maritime work steel plate for a polar region and a preparation method of the 355MPa-grade maritime work steel plate, and belongs to the technical field of microalloyed steel production, and the 355MPa-grade maritime work steel plate comprises the following components in percentage by mass: 0.06 to 0.014 percent of C, 0.20 to 0.50 percent of Si, 1.20 to 1.60 percent of Mn, 0.020 to 0.050 percent of Nb, 0.010 to 0.050 percent of Ti, 0.07 to 0.20 percent of Ni, 0.010 to 0.050 percent of Als, less than or equal to 0.025 percent of P and less than or equal to 0.020 percent of S. The preparation method of the steel plate comprises the steps of molten iron pretreatment, converter or electric furnace smelting, refining, continuous casting, casting blank cleaning and slow cooling. And heating the slowly cooled blank in a furnace, rolling, air-cooling the steel plate, and carrying out flaw detection to obtain the qualified steel plate. The microstructure of the obtained 355MPa-grade maritime work steel plate is ferrite and pearlite, grains are fine and uniform, the grain size is about 10 grades, the yield strength reaches 400-480MPa, the tensile strength reaches 480-530MPa, the percentage elongation after fracture reaches 25-35%, the impact energy at the temperature of-40 DEG C is larger than or equal to 160J, the impact energy at the temperature of-52 DEG C is larger than or equal to 100J, and the requirements of project construction such as oil and gas exploitation and ocean engineering in extremely cold areas for the performance of the steel plate are met.

The invention belongs to the field of special films, and discloses a tearable film thermoplastic acrylic resin, which is prepared by carrying out a radical polymerization reaction on the following components by weight: 24-30% of a soft monomer, 10-15% of methyl methacrylate, 5-10% of styrene, 3-5% of C12-C18 alkyl methacrylate, 0.5-1.5% of an organosilicon monomer, and the balance of a solvent. According to the present invention, the resin exhibits excellent easy-peeling property at both high and low temperatures, and does not use a plasticizer, such that the problem of after tackiness of theresin at a high temperature is solved.

The invention discloses a method for strengthening and toughening lithium disilicate glass ceramic and activating the surface of the lithium disilicate glass ceramic by utilizing ion exchange. The method comprises the steps of 1, preparing mixed salt of NaNO3 and KNO3; 2, heating and melting to a liquid state to obtain mixed bath salt; 3, cooling along with the furnace, keeping the constant temperature, and immersing into lithium disilicate glass ceramic for ion exchange treatment; and 4, conducting ultrasonic cleaning after washing, and obtaining the toughened and surface-activated lithium disilicate glass ceramic. By adopting ion exchange treatment, Li < + > on the lithium disilicate glass ceramic surface layer and Na < + > in the mixed bath salt are exchanged due to chemical potential difference to generate residual compressive stress, so that the strengthening and toughening effect is realized, and the mechanical property is improved. Meanwhile, the composition and energy state of the lithium disilicate glass ceramic surface layer are changed, the exchanged Na < + > has a greater dissolution tendency in biological fluid, the surface activation effect on the lithium disilicate glass ceramic is realized, and the lithium disilicate glass ceramic has a wide application prospect in the field of bone repair.

The invention relates to anti-static high-holding-force elastic card clothing which comprises a plate-shaped base body and a carding assembly. The carding assembly is composed of a plurality of conductive metal card wires inserted into the plate-shaped base body in a matched mode. The plate-shaped base body comprises a fabric composite layer, an oil-resistant plate and a conductive metal plate. And the oil-resistant plate and the conductive metal plate are respectively glued on two sides of the fabric composite layer. And the conductive metal plate and the tail end of each conductive metal card wire are kept in an electric connection state. Thus, on one hand, it can be guaranteed that static charges gathered on the conductive metal card wires can be conducted out in time, and then the phenomenon that stripped fine yarn scraps are attached to the conductive metal card wires or fill installation gaps of the conductive metal card wires due to electrostatic induction is prevented; on the other hand, the oil-resistant plate and the conductive metal plate can synergistically play an auxiliary supporting role on the conductive metal card wires, and it is guaranteed that the conductive metal card wires are always kept in a correct posture in the yarn combing process. In addition, the invention further relates to a forming process for preparing the anti-static high-holding-force elastic card clothing.

The invention provides a method for preparing a bismuth yellow hybrid pigment for polymer coloring and reinforcing by using mixed-dimension attapulgite clay, which comprises the following steps: adding the mixed-dimension attapulgite clay, a bismuth source and a vanadium source into a twin-screw extruder, extruding by using the twin-screw extruder without or after adding a molybdenum source to obtain a precursor, and crystallizing at a high temperature of 500-900 DEG C for 30-180 minutes to obtain the bismuth yellow hybrid pigment. The preparation method comprises the following steps: diluting a silane coupling agent with absolute ethyl alcohol, mixing the diluted silane coupling agent with the bismuth yellow hybrid pigment, and drying to constant weight, thereby obtaining the mixed-dimension attapulgite clay-based bismuth yellow hybrid pigment for polymer coloring and reinforcing. The mixed-dimension attapulgite clay-based bismuth yellow hybrid pigment is prepared by adopting a double-screw extruder, so that the technical problems of intermittent production and high energy consumption of a traditional solid-phase method are solved, and the defects of low yield, more wastes and complicated steps of a liquid-phase method are also avoided. The method disclosed by the invention is low in energy consumption, high in yield, green, clean, low in production cost and suitable for industrial continuous production.