79results about How to "Strong creep resistance" patented technology

The invention relates to a cement-based grouting material and a preparation method thereof. The cement-based grouting material comprises a component A, a component B and a component C, wherein the component A comprises the following components by weight part: 80 to 90 parts of epoxy resin, 1 to 10 parts of diluents, 0 to 1 part of defoaming agent and 1 to 5 parts of coupling agent; the component B comprises a water-soluble amine curing agent with an emulsification function; the component C comprises the following components by weight part: 30 to 50 parts of cement, 2 to 4 parts of ultrafine mineral powder, 0 to 1 part of silica micropowder, 2 to 4 parts of expanding agent, 0 to 1 part of water-reducing agent and 40 to 60 parts of river sand; and the weight ratio among the component A, the component B and the component C is (60 to 100) : (90 to 150) : (400 to 800). Mechanical indexes, such as compressive strength, breaking strength and the like, of the cement-based water-soluble epoxy resin grouting material are far more excellent than those of the common cement grouting material.

The invention belongs to the field of materials of lithium ion batteries, and particularly relates to a negative electrode of the lithium ion battery and a preparation method thereof. The negative electrode of the lithium ion battery comprises a current collector and negative electrode paste for coating the current collector, wherein the negative electrode paste comprises the following dry ingredients by weight percent: 92-99% of active material and 1-8% of an adhesive; the active material is graphite or graphite alloy; the adhesive is waterborne multi-component copolymerization emulsion. The waterborne multi-component copolymerization emulsion is used for replacing conventional butadiene styrene rubber and serves as the adhesive for the lithium ion battery, so that the more excellent adhesive performance is realized in comparison with the adhesive performance of a conventional adhesive, and meanwhile, the prepared battery has prominently excellent performances such as good low temperature characteristics, low circulation expansion rate, good long cycling performance and relatively excellent processing characteristics; the negative electrode prepared by using the method has relatively small impedance and relatively good dynamic performance and is capable of effectively solving the problem of risk of separation of lithium in the lithium ion battery at low temperature; the prepared battery has the characteristics of safety, reliability and long cycle life.

The invention relates to a linen-plastic compound material plate and a preparation method thereof, in particular to a compound material and an environment-friendly material and a preparation method thereof. The material is preferably used for manufacturing goods shelf plates, door panels, etc. of vehicles such as cars, planes, etc. in traffic field, manufacturing decorative boards, palisades, rails, etc. in architecture field as well as manufacturing trays, goods shelves, etc. in packaging field. The linen-plastic compound material plates consist of two layers of linen fiber modification plastic layers and a linen fiber cloth enhancement plastic layer; the linen fiber cloth enhancement plastic layer is molded and pressed between the two layers of linen fiber modification plastic layers; modification plastic particles, linen fiber and interface compatilizer are mixed and calendered to form the linen fiber modification plastic layers; the plastic particle and a plurality of layers of fiber linen cloth processed by silane coupling agent are molded and pressed to form the linen fiber cloth enhancement plastic layer.

The invention discloses dispersion strengthening platinum/rhodium30-platinum/rhodium6 thermocouple wires, comprising a cathode and an anode; the thermocouple wires are characterized in that the anode contains ingredients according to the following weight percentage: 30% of rhodium; the excess is platinum; the cathode contains ingredients according to the following weight percentage: 5.94-6% of rhodium; 0-0.5% of zirconium; 0-0.5% of yttrium; 0-0.5% of calcium; 0-0.5% of lanthanum; 0-0.5% of titanium; the excess is platinum. The production method of dispersion strengthening platinum/rhodium30-platinum/rhodium6 thermocouple wires comprise mixing ingredients, vacuum melting, placing and rolling, oxidizing, combined machining and drawing forming. The dispersion strengthening platinum/rhodium30-platinum/rhodium6 thermocouple wires of the invention enjoy long service life, high adaptive temperature, strong contamination resistance and low use cost.

The invention belongs to the technical field of preparation of long-fiber-reinforced master batches, and particularly relates to a high-rigidity creep-resistant long-fiber-reinforced master batch for wood plastic products and a preparation method thereof, and an impregnation mold for the preparation method. The master batch comprises the following components in percentage by mass: 35-80% of thermoplastic, 10-55% of fiber bundle, 0.3-3% of surface treating agent, 5.5-9.2% of compatilizer and 0.5-1.5% of antioxidant. By adopting the specific thermoplastic, compatilizer and other materials and utilizing the specific impregnation mold, the long fiber bundle is sufficiently impregnated in the master batch so as to lower the porosity and provide impregnation effect, and thus, the master batch has higher rigidity and creep resistance. After being added into the wood plastic profile product, the master batch enhances the bending modulus, strength and creep resistance, and can perform the function of reducing deformation in the profile use process, so that the application performance and long-term usage stability of the obtained WPC profile are improved.

The invention aims to provide an asphalt modifier and a preparation method thereof, which overcome the disadvantages of nonuniform modification, serious pollution and hidden danger caused by adding rubber powder into asphalt and solve the technical problem of the modification and prefabrication of the rubber powder. The invention provides the asphalt modifier. The asphalt modifier is characterized by comprising the following components of: tire rubber powder, polyethylene, silicon dioxide and rubber oil, wherein the components are stirred, heated, extruded, cooled and cut to obtain plasticized rubber sticky particles, namely the asphalt modifier. The plasticized rubber sticky particle product of the invention greatly reduce high-temperature processing and pollution of rubber asphalt; the produced rubber asphalt sticky particles are a directly thrown type novel internal modification material and can be directly thrown into the asphalt and stones for mixing; and the asphalt modifier is odorless, can reduce secondary pollution, and has better meltability than that of rubber powder modified asphalt. The rubber asphalt particles are black sticky particles and are easy to package and transport.

The invention discloses an aluminum alloy cable core and a method for preparing the aluminum alloy cable core. The cable core is composed of 0.06wt% of Si, 0.40-1.2wt% of Fe, 0.05wt% of Cu, 0.01-0.05wt% of Mg, 0.01-0.3wt% of RE, 0.05wt% of Zn, 0.04wt% of B and the rest of Al. According to the aluminum alloy cable core and the method for preparing the aluminum alloy cable core, rare earth resources in China are utilized; after rare earth elements are added to conductor materials, aluminum alloy conductors which are extremely competitive in conductivity, flexibility, bending property, tensile property, creep resistance and connecting stability and excellent in resistance to corrosion are prepared through the smelting process, the rod drawing process, the wire drawing process, the compressing process and the stranding process and special annealing treatment; after being detected and verified by authorities at home and abroad, the compensative performance of the aluminum alloy cable core is far beyond current industry standards at home and abroad; high-tech aluminum alloy cable products can be widely applied to fields like electric power, automobiles, traffics, mineral products, ships, chemical industries and military, and the advantages of the high-tech aluminum alloy cable products are more obvious when the high-tech aluminum alloy cable products are used in complex and severe engineering environments.

The invention belongs to the technical field of materials, and provides a directional interconnection method for Cu6Sn5-base single-crystal lead-free solder joints for high-temperature packaging. The method comprises the steps of firstly, preparation of a Cu6Sn5-base single-crystal block body, secondly, cutting of the Cu6Sn5-base single-crystal block body, thirdly, surface pretreatment of a Cu-base welding disc, and fourthly, interconnection of Cu6Sn5-base single-crystal welding blocks. The elasticity modulus of the Cu6Sn5-base single-crystal lead-free interconnected solder joints prepared with the method is 235% of that of common Sn-base brazing filler metal, the conductivity of the Cu6Sn5-base single-crystal lead-free interconnected solder joints is 52.4% that of the Sn-base brazing filler metal, and the heat conductivity of the Cu6Sn5-base single-crystal lead-free interconnected solder joints is 57.8% that of the Sn-base brazing filler metal. The method has the beneficial effects of being low in cost, resistant to high temperature, high in reliability of interconnection of the solder joints and a Cu-base welding disc, high in creep-resistance, and capable of being used for a long time under the severe condition. The method has the beneficial effects of being simple in working principle, low in cost, rapid in single-crystal preparation and high in quality.

The invention provides a preparation method for a titanium alloy gear. The preparation method includes the steps that a titanium alloy gear substrate is prepared through a 3D printing method; the titanium alloy gear substrate is subjected to hot isostatic pressing treatment, and a titanium alloy gear blank is obtained; a hardened layer is formed on the surface of the titanium alloy gear blank through a fusion covering method, and the titanium alloy gear is obtained; and the thickness of the hardened layer is 1-2 mm. According to the preparation method for the titanium alloy gear, the mechanical properties of the gear substrate are improved through hot isostatic pressing treatment, and the thick hardened layer can be formed on the surface of the gear substrate through the fusion covering method. The titanium alloy gear prepared through the process is high in surface hardness, low in friction coefficient, resistant to abrasion, high in impact resistance and fatigue performance, and suitable for gear transmission equipment in the aerospace industry, automobile industry and the like.

The invention relates to a high-strength ultralight tray and a preparation method thereof. The high-strength ultralight tray is subjected to injection molding by thermoplastic composite material; the upper surface of the high-strength ultralight tray is a plane in a hollow structure; cross-shaped grid ribs are arranged in the hollow structure; the side surface and the upper surface of the high-strength ultralight tray are in 90-degree connection; the junction is in fillet transition; the side surface is provided with an opening used for a forklift; the side surfaces are connected at an angle of 90 degrees; the junction is in the fillet transition; the bottom surface is provided with nine footings; one footing is arranged on the center position; and the rest eight footings are evenly distributed around the bottom surface and are connected by connection ribs. The preparation method comprises the following steps of firstly, preparing polyolefin reinforcing material, and then carrying out injection molding to obtain the high-strength ultralight tray. Compared with the prior art, the invention has the advantages of short injection molding period time, high production efficiency and low production cost, and the obtained product has the advantages of light weight, big bearing and relatively long service life.

The invention discloses an aluminum alloy power cable. The chemical constituents of the aluminum alloy power cable include by mass: 0.01-0.30% of Si, 0.5-1.3% of Fe, 0.01-0.05% of Mn, 0.03-0.05% of Cu, 0.01-0.5% of Mg, 0.01-0.09% of Zn, 0.005-0.20% of (V+Ti+Cr+Ni+Co+Zr), 0.01-0.06% of E and the balance being Al and inevitable impurities, wherein the element E is one or two of B and Be. The aluminum alloy power cable has the advantages that aluminum alloy has relatively high comprehensive performance due to the addition of elements Fe, Mg and the like, particularly the proportions of specific contents; meanwhile, the aluminum alloy power cable has obvious advantages of a light weight; when the aluminum alloy power cable disclosed by the invention substitutes a copper cable, the cable weight can be reduced, the installation cost, the abrasion of the device and the cable and the operation cost are reduced, energy is saved, the environment is protected, and the economic benefit is improved.

The invention discloses lead alloy anode material and a smelting method for electrodeposition zinc and belongs to the technical field of preparation of lead alloy anode material and a smelting method for the electrodeposition zinc. The anode material comprises the following components by percent by weight: 0.1-0.3% of silver, 0.05-0.15% of calcium, 0.02-0.06% of strontium, 0.005-0.03% of aluminum, 0-0.1% of rare earth meal, and lead of allowance. The melting process includes that after lead is melted, aluminum powder/silver piece/silver ingot is added by proportion, an aluminum plate is added by proportion after the silver is melted, after the aluminum is partly melted, the lead calcium, the lead strontium alloy and the rare earth metal are added by proportion and stands after mixed, scum is removed, and blank alloy pig is cast. The anode material has good mechanical performance and anti-corrosion resistance performance, can obviously prolong service life of an anode in the process of wet process electrodeposition zinc process, and reduces bath voltage and energy consumption of the process of electrodeposition.

The invention relates to a strong-strength load bearing pallet. The pallet is formed by injection-molding a composite thermoplastic material, and consists of an upper surface, lateral surfaces and a lower surface, wherein the upper surface consists of four horizontal squared structures; hollow structures consisting of grating ribs are arranged between the squared structures; cross-shaped reinforcing ribs are arranged in the squared structures; the lateral surfaces are connected with the upper surface at 90 degrees, and rounded corners are adopted for transition at joints; positions for a forklift truck are arranged on the lateral surfaces; every two lateral surfaces are connected at 90 degrees, and rounded corners are adopted for transition at joints; and the lower surface is provided with nine footings, one footing is arranged at a central position, and the other eight footings are uniformly distributed on the periphery of the lower surface, and are connected through connecting ribs. Compared with the prior art, the invention has the advantages that the pallet has the advantages of light weight, high load bearing capacity and longer service life; and during logistics transfer and production transportation, the pallet has remarkable advantages, and the cost can be remarkably reduced.

The invention relates to a preparation method of a SiSiC cushion block for a walking beam furnace. The preparation method comprises the following steps of: grinding 90-99 parts of SiC powder, 1-10 parts of carbon powder, 0.5-1.5 parts of an additive and 16-20 parts of water into slurry; molding by casting; drying a wet blank; sintering through a siliconizing reaction; machining and the like. The preparation method disclosed by the invention has the advantages of simple process, low cost, and capability of realizing direct baking without sintering through a nitriding reaction. The prepared SiSiC cushion block has the advantages of high temperature resistance, very high strength, high creeping resistance, low heat conductivity coefficient, high thermal shock resistance and capability of replacing a heat-resistant alloy steel cushion block.

The invention discloses a novel commercial vehicle lead-acid storage battery with a long service life. The storage battery comprises a storage battery groove, a storage battery cover, a safety valve,pole groups and an electrolyte. Two glue remaining grooves are arranged in a bottom of an inner cavity of each grid of the storage battery groove. When the storage battery is assembled, a first hot melt glue is injected into the glue remaining grooves firstly, then the pole groups are installed, and each pole group is fixed to the bottom of the storage battery groove through the first hot melt glue; each pole group comprises a negative plate, an AGM partition plate, a positive plate, a busbar and a pole column; assembly pressure of each pole group is 35-45 kPa, two second hot melt glues are added to an upper part of each pole group; and the negative plate, the AGM partition plate and the positive plate are fixed by the second hot melt glues, and the electrolyte is adsorbed in the negativeplate, the AGM partition plate and the positive plate. The hot melt glue is used for bonding each pole group in the storage battery groove, and the hot melt glue added at the upper part of each pole group is used for fixing the positive plate, the negative plate and the AGM partition plate so that up-and-down movement between pole plates in a vibration process of the storage battery is prevented,and vibration resistance of the storage battery is enhanced.

The invention relates to the technical field of aluminum alloys and specifically provides an ultrahigh-conductivity and high-heat conductivity aluminum alloy. The ultrahigh-conductivity and high-heat conductivity aluminum alloy is characterized by comprising 0.2-0.6% by mass of Fe, 0.3-0.8% by mass of Ni and 0.2-0.6% by mass of rare earth element Ce or La or mixture of Ce and La; meanwhile, one or two or three in an additive A is additionally added, the additive A is Mg, Cu, Mn or the mixture thereof, the mass content of each is 0.1-0.5%, and the content of the total additive is controlled within 0.9%; meanwhile, other impurities are controlled as follows: the individual content is less than 0.03% and the total content is less than 0.1%; the balance is Al and inevitable impurities. The aluminum alloy has high conductivity of above 61.8% IACS, excellent heat conductivity and a heat conduction coefficient of 225W/m.k or above, thereby being an excellent aluminum alloy cable material and high-performance heat conduction material.