41results about How to "Improve strength" patented technology

The invention discloses a processing method of a high-strength high-conductivity electrical copper alloy. The method includes the steps that S1, 0.3%-0.4% of Mg, 0.05%-0.1% of Ag, 0.1%-0.2% of Te, 0.03%-0.06% of Y, 0.01%-0.03% of La, 0.04%-0.08% of B, 0.01%-0.05% of Nb and the balance oxygen-free copper are mixed and then subjected to vacuum melting to obtain molten liquid; S2, the molten liquid is subjected to horizontal electromagnetic continuous casting and pulling casting to obtain a rod billet; S3, the rod billet is subjected to hot rolling, cold rolling and then annealing treatment to obtain a wire billet; S4, the wire billet is subjected to solid solution treatment, and aging treatment is performed after water quenching; and S5, an obtained wire rod is subjected to multi-pass drawing, intermediate continuous annealing is performed between different passes of drawing, and the high-strength high-conductivity electrical copper alloy is obtained. According to the high-strength high-conductivity electrical copper alloy and the processing method thereof provided by the invention, the electrical copper alloy obtained through the processing method is high in conductivity and meanwhile good in strength and extension property.

The invention discloses ore powder, a preparation method of the ore powder and an autoclave curing-free prestressed high-intensity concrete (PHC) production method. The ore powder has performances of above level S115. The preparation method of the ore powder mainly comprises raw material transportation, grading, grinding and recirculation. The autoclave curing-free PHC production method mainly comprises two main steps of preparing PHC raw material ore powder and preparing a PHC from the PHC raw material ore powder. Composed with the common fine slag powder, the ore powder has higher fineness and can greatly improve the strength, workability and durability of concrete. The preparation method of the ore powder provides a high-performance ore powder, is convenient for implementation, management and control and has a large economic benefit. The autoclave curing-free PHC production method can improve PHC quality, greatly reduce cracks, reduce brittleness, improve durability, reduce a cost and improve benefits.

A non-woven fabric of the present invention is composed primarily of entangled fluoropolymer fibers. In addition, the non-woven fabric of the present invention may be pressure and heat treated, or may be subject to elongation. This provides the non-woven fabric with superior mechanical characteristics.

In a rotor core (12) of a rotor (10), a core interior refrigerant path is formed. The core interior refrigerant path includes a first refrigerant path (22) formed for every magnetic pole and extending along each q axis from the outer circumferential end of the rotor core (12) toward the inner circumference of the rotor core (12); a second refrigerant path (24) formed for every other magnetic pole and extending along a d axis from the inner circumferential end of the rotor core (12) to a position closer to the inner circumference than the permanent magnet (16) is; and a third refrigerant path (26) extending in a rotor circumferential direction at a position displaced in the rotor shaft direction relative to the first refrigerant path (22) to provide fluid communication between the first refrigerant path (22) and the second refrigerant path (24).

The invention provides a waterborne acrylic wood coating. The waterborne acrylic wood coating comprises, by weight, 40-45 parts of acrylic emulsion, 20-25 parts of starch emulsion, 2-4 parts of coalescing agent, 0.5-1 part of leveling agent, 1-1.5 parts of thickener, 2-3 parts of drier, 15-20 parts of water, 4-5 parts of fire retardant, 0.1-0.2 part of mildew-proof agent, 9-14 parts of filler and 0.5-1 part of sodium polyacrylate. The invention further provides a preparation method of the waterborne acrylic wood coating. The waterborne acrylic wood coating is high in adhesive force and capable of purifying air effectively.

The present invention discloses a heat-resistant corrosion-resistant woven bag, which is prepared from a polyvinyl chloride / thermoplastic polyurethane composite material. The polyvinyl chloride / thermoplastic polyurethane composite material includes polyvinyl chloride, thermoplastic polyurethane, methyl vinyl silicone rubber, nitrile rubber, acrylonitrile-butadiene-styrene copolymer, stearic acid, sulfur, zinc oxide, calcium stearate, zinc stearate, bis (2-hydroxyethyl)amino(trihydromethyl) methane, stannous pyrophosphate, imarcaptoacetate dioctyltin, barium sulfate, light calcium carbonate, aluminum hydroxide, a rare earth coupling agent, decabromodiphenylethane, trioxide antimony, dipentamethylenethiuram tetrasulfide, tris(2-hydroxyethyl) isocyanurate, butadiene, cyclohexane 1,2-diisononyl phthalate and an antioxidant 1010. The heat-resistant corrosion-resistant woven bag provided by the present invention has good heat resistance, excellent corrosion resistance and flame retardance and long service life.

The invention relates to a cement system for preventing carbon dioxide corrosion in oil wells, which comprises the following constituents (by mass percent): 8-35% of quartz sand or ganister sand, 5-8% of micro silicon powder, 6.5-18% of filtrate loss reduction additive DSJ, DSHJ or DHL, and cement.

The invention relates to a steel-liner plastic container and a processing process thereof. The steel-liner plastic container comprises a container body and an antiseptic plastic liner adhered to the container body, and is characterized in that a filling space is reserved between the inner wall of the container body and the antiseptic plastic liner and internally provided with an adhesive for adhering the antiseptic plastic liner and the container body. By adopting the technical scheme, the invention provides the antiseptic steel-liner plastic container and the gap-resistant processing process of the steel-liner plastic container for avoiding generating an internal gap.

The invention discloses an environment-friendly plastic material and a preparation method thereof. The preparation method comprises the following steps that 1, ball milling is performed on calcium sulfate and magnesium oxide through a ball mill, the ball milling time is 3-5 h, and the ratio of grinding media to the materials is 20:1-30:1; 2, 12-20 parts of polyamide-1010, 5-10 parts of polycarbonate, 4-9 parts of alkyd resin, 4-8 parts of polyvinyl alcohol, 3-8 parts of calcium sulfate, 4-10 parts of magnesium oxide, 2-6 parts of polytrimethylene terephthalate, 3-8 parts of tetrafluoroethylene-hexafluoropropylene copolymer, 2-6 parts of polybutyl methacrylate and 4-10 parts of polyparahydroxybenzoic acid are weighed by weight, all the components are extruded inside a double-screw extruder, and the extruded components are the environment-friendly plastic material. The obtained plastic material effectively overcomes the defects that the tensile strength and the elongation at break of the conventional plastic material are low, and the mechanical performance of the plastic material is improved.

The invention relates to solid mercury for manufacturing a lamp and belongs to the technical field of energy-saving fluorescent lamp tube manufacturing materials. The solid mercury for manufacturing the lamp comprises, by mass, 50%-85% of Bi, 1%-10% of Ag, 10%-35% of Hg, 0.5%-5% of Sn and 0-3% of Sb. Multi-element eutectic alloy is formed by Bi atoms, Ag atoms, Sn atoms, Sb atoms and part of Hg atoms; the addition of the Sn and the Sb improves the grain structure of solid amalgam, the strength of the multi-element eutectic alloy can be enhanced, and the remaining part of free mercury atoms exist between crystal lattices of the multi-element eutectic alloy; after the solid mercury is used for manufacturing the energy-saving fluorescent lamp, a characteristic curve similar to pure mercury can be obtained, and the curve of the climbing speed that a lamp tube is lighted approaches the liquid mercury characteristic curve. According to amalgam, mercury loss cannot occur at the normal temperature, the abundance mercury quantity in the lamp tube is relatively stable, the lighting speed of the lamp tube is guaranteed, and the lamp tube is prevented from changing color after being used for a long time.

The invention provides a method for continuously preparing cement admixture simply and directly with low cost, taking ammonia, ethylene oxide (EO for short) and propylene oxide (PO for short) as raw materials. The method comprises the following steps that: ammonia material flow and EO material flow the mass flow ratio of which is (17-170) to 44 are sent into a flow reactor, thereby continuously forming a mixture containing monoethanol amine, diethanolameine and trolamine; the liquid level in the flow reactor is kept in the state that material flows in the flow reactor can perform extrinsic cycle spraying from the bottom to the top of the flow reactor through a recycle pump, and meanwhile a part of the material flows is sent into a flash distillation column continuously for removing the unreacted ammonia; the material flows having the ammonia removed react with PO material flow and the products are obtained continuously. The method is utilized to continuously prepare the cement admixture, the products do not need to undergo rectification separation, thereby greatly reducing the energy consumption of production and further reducing the production cost of the products.

The invention discloses an air permeable brick core brick, a preparation method and use thereof. The air permeable brick core brick is composed of a high temperature resistant ceramic material, and the ceramic material mainly consists of silicon carbide and mullite and contains pores. The preparation method comprises: (1) mixing silicon carbide, an aluminum source and a silicon source, and puttingthe obtained mixture into a mould for moulding to obtain a green body; and (2) firing the green body obtained in step (1) to obtain the air permeable brick core brick. The air permeable brick core brick is used for preparation of diffuse type air permeable bricks or compound air permeable bricks. The air permeable brick core brick provided by the invention has the advantages of high strength, wear resistance, scouring resistance, excellent thermal shock resistance, uniform structure, large porosity, reasonably distributed and communicated pores, and convenient use. The preparation method provided by the invention has the advantages of short process, simple operation and low cost, and is suitable for industrial production.

The invention relates to a graded gravel mixture, and belongs to the technical field of pavement materials. The graded gravel mixture mainly comprises an aggregate raw material, modified polyacrylonitrile fiber and expanded graphite, wherein the aggregate raw material is prepared according to the following steps: calcinating and griunding titanium dioxide to obtain activated nanometer titanium dioxide powder, then mixing graded gravel particles, the activated nanometer titanium dioxide powder and the like to obtain a mixed material, equally dividing the mixed material into 3 parts, grinding into particles with three particle sizes, and mixing to obtain the aggregate raw material; polyacrylonitrile fiber is modified according to the following steps: mixing epoxy resin with anhydrous ethanol and the like, performing a heat-preserving reaction to obtain a reaction solution, mixing the polyacrylonitrile fiber with a modifying solution and the like, and drying to obtain the modified polyacrylonitrile fiber. In the graded gravel mixture provided by the invention, a coarse material forms a framework, and gaps in the coarse material framework are filled with a fine material, so that improvement on the compactness and the stability of an overall structure is facilitated and the effects of improving the strength of the graded gravel material and resisting the shear deformation are relatively obvious.

The invention discloses a cable fireproofing coating. The cable fireproofing coating comprises, by weight, 5-10 parts of zinc borate, 5-10 parts of bentonite, 5-10 parts of titanium dioxide, 2-10 parts of molybdenum sesquioxide, 5-10 parts of dimethicone, 0.5-3 parts of polyoxyethylene polyoxypropanol amine ether, 1-5 parts of N,N-dimethylpiperazine, 15-30 parts of octaphenyl polyhedral oligomeric silsesquioxane modified sulfonated polyimide, 15-30 parts of KH-560, 5-10 parts of 1,12-dibromododecane, 5-10 parts of beta-cyclodextrin modified amino-terminated sulfonated polybenzimidazole, 30-50 parts of nanometer titanium dioxide, 1-5 parts of graphene oxide, 30-50 parts of ethyl orthosilicate, 10-20 parts of dimethyl sulfoxide, 5-10 parts of ethylene glycol and 1-10 parts of pentaerythritol. The invention also discloses a preparation method of the cable fireproofing coating.

The invention discloses a polyvinyl chloride waterproof roll material and a preparation method thereof, and belongs to the field of high molecular materials. The polyvinyl chloride waterproof roll material is characterized in that the polyvinyl chloride waterproof roll material is formed by compositing outer polyvinyl chloride composition waterproof layers and inner polyvinyl chloride fiber textile framework enhancement layers alternately. After materials are mixed, a multiple extruding machine joint extruding and rolling process is adopted, the polyvinyl chloride composition layers are located between an upper layer, a lower layer and the polyvinyl chloride fiber textile layers of the roll material, the extrusion temperature is 160-190 DEG C, and the setting temperature is 180-210 DEG C. Polyvinyl chloride fiber textiles are used as enhancement materials, and the flame retardant performance is achieved while the strength of the PVC waterproof roll material is improved; the performance of the polyvinyl chloride fiber textiles is close to that of a PVC waterproof layer, so that surface treatment is not needed during usage; and the polyvinyl chloride waterproof roll material is good in durability and easy to recycle.

The invention relates to the technical field of brake materials, in particular to a friction material, an organic carbon-ceramic brake pad for a light-weight carbon-ceramic plate prepared from the friction material, as well as a preparation method and application thereof. The organic carbon-ceramic brake pad for the light-weight carbon-ceramic plate is prepared from the following raw materials including, by weight, 2 to 4 parts of basalt fiber, 10 to 15 parts of steel fiber, 5 to 10 parts of mineral fiber, 8 to 12 parts of phenolic resin, 5 to 10 parts of elastic particles, 6 to 10 parts of cashew nut oil friction powder, 10 to 20 parts of precipitated barium sulphate, 1 to 3 parts of acrylic fiber, 2 to 4 parts of silicon carbide, 6 to 11 parts of kieselguhr and 9 to 12 parts of glass beads. The preparation method is pressing and thermosetting forming. The organic carbon-ceramic brake pad for the light-weight carbon-ceramic plate provided by the invention is stable in structure, goodin heat resistance and friction performance, simple in preparation process, and short in preparation period, and has good compatibility with the light-weight carbon-ceramic plate and good practicability so as to form a light-weight friction pair, so that the light weight of a vehicle can be effectively realized.

The invention discloses a compound novel polyester fiber. The compound novel polyester fiber comprises the following raw materials in parts by weight: 40-70 parts of polyethylene powder, 10-20 parts of diethyl citrate, 1-5 parts of a brightener, 2-4 parts of iron sesquioxide, 20-40 parts of epoxidized soybean oil, 2-6 parts of terephthalic acid, 1-5 parts of phosphorous acid, 1-3 parts of pearl powder, 2-4 parts of ethylene glycol, 1-3 parts of zinc oxide, 4-10 parts of barium titanate powder, 1-3 parts of a coupling agent, and 1-3 parts of dicumyl peroxide. Through the scientific formula design, the strength of the fiber is effectively improved, the service life of the fiber is prolonged, and meanwhile, the compound novel polyester fiber also has the effects of saving the resources and protecting the environment.

Provided is a flame-resistant composite member exhibiting extremely high flame resistance even when having a flammable base material. This flame-resistant composite member has a coating formed from a silicone resin composition (C) including at least an inorganic oxide particle-containing condensation-reactive silicone resin upon at least one surface of a plastic base material containing an inorganic compound.

The invention relates to a method for processing easy-care textiles formed by homogenous foreign natural fibers, belonging to the field of textile processing. The method is characterized by dyeing such natural loose fibers as cottons, wool, silk, hemps and the like or stripes of the natural loose fibers, then padding the natural loose fibers or the stripes in a processing solution to carry out preprocessing, and then blending the processed natural loose fibers or stripes with the dyed natural loose fibers or stripes which are not subjected to preprocessing to form yarns and then carrying out the subsequent procedures including weaving, delayed baking and finishing to prepare the easy-care textiles. While having the easy-care performance, the processed textiles still maintain good moistureabsorption and air permeability, soft handfeel and stronger strength as a whole.

The invention discloses a hole sealing and drilling method for downhole gas extraction in a coal mine, which comprises the following steps of: 1) plugging a hole sealing baffle bag I filled with a baffle foaming material, a hole sealing filling bag I filled with a filling foaming material and a hole sealing baffle bag II filled with the baffle foaming material into an extraction drilling hole in sequence; 2) after the baffle foaming material and the filling foaming material are formed and cured, connecting a gas extraction tube to an extraction system to examine whether the extraction drilling hole is of air leakage or not; and 3) if so, further plugging a hole sealing filling bag II filled with the filling foaming material and a hole sealing baffle bag III filled with the baffle foaming material into the extraction drilling hole in sequence till the extraction drilling hole is not of air leakage. The method provided by the invention solves the problem that air leakage occurs after the extraction drilling hole is sealed in the extraction process and the hole cannot be repeatedly sealed, and enables the extraction drilling hole to prevent air leakage. Hole sealing depth and length can be adjusted randomly according to actual demands, so that various downhole gas extraction drilling holes in coal mines can be sealed.

The invention provides a method for preparing a high-strength mullite castable, which includes the following steps: a. put mullite, brown corundum, and zirconium materials into a crusher for crushing, and after being crushed into particles, put the particles into a mixer Add water and stir to obtain mixed particle A; b put SiO2 micropowder, heat-resistant steel fiber, and nano-barite powder into a ball mill and mix them to make them mix uniformly and fully to obtain mixed material B; c mix mixed particle A and mixed material B put into a vacuum mixer, add binder and water, and stir under vacuum conditions to obtain a mixture C; d inject the mixture C into a clean fixed mold, and use a vibrating rod to vibrate in layers to form, that is. The invention is easy to operate, scientific and reasonable, and can effectively improve the fineness of the mullite pouring material, thereby improving the quality of the pouring material.

The invention discloses a magnetic-spinning core-spun composite yarn. The yarn comprises a filament located at a core part and a polymer coating layer located on the outer peripheries of the core part, wherein the polymer coating layer is a magnetic polymer nanometer coating layer; and the magnetic polymer nanometer coating layer coats the filament located at the core part through magnetic spinning of magnetic spinning equipment. During spinning of the yarn, electric field force is replaced by magnetic field force; nano fibers are prepared through stretching of a polymer spinning solution under alternating magnetic field force, and the surface of the filament is coated by the polymer nano fibers. In this way, strength of the nano fibers is greatly improved, and the application scope is expanded greatly.

The invention discloses a chain for a vehicle, belonging to driving parts of non-motor vehicles. The chain comprises a chain link body, a roller with a shaft hole, and a hinged shaft, wherein each chain link body is provided with a pair of chain pieces and at least one tongue-shaped closing plate, one ends of the pair of chain pieces are respectively formed into a small linked crushing plate, and the other ends are respectively formed into a large linked crushing plate, the pair of small linked crushing plates are respectively provided with small crushing plate hinged holes, the pair of large linked crushing plates are respectively provided with large crushing plate hinged holes, and the small linked crushing plates extend into the large linked crushing plates of the adjacent chain link body; the roller with a shaft hole is arranged between the pair of the small linked crushing plates; the hinged shaft penetrates into the large crushing plate hinged holes, the small crushing plate hinged holes and the shaft hole to hinge the small linked crushing plate of one chain pieces of the chain link body with the large linked crushing plate of the other chain pieces of the chain link body; and the tongue-shaped closing plate is formed on the large linked crushing plates. The whole strength of the chain is improved; the tongue-shaped closing plate not only plays roles of dust blocking and draining, but also further improves the strength of the chain link body so that the service life of the chain is prolonged.

The invention discloses a chemical polyester fiber, which is prepared from the following raw materials in parts by weight: 40 to 70 parts of PET slices, 10 to 20 parts of delustering agents, 1 to 5 parts of graphene, 2 to 4 parts of ferric oxide, 20 to 40 parts of epoxy resin, 2 to 6 parts of terephthalic acid, 1 to 5 parts of orthophosphorous acid, 1 to 3 parts of pearl powder, 2 to 4 parts of ethylene glycol, 1 to 3 parts of antimony ethylene glycalate, 2 to 4 parts of boride, 10 to 20 parts of maleic anhydride grafted polypropylene and 1 to 3 parts of dicumyl peroxide. Through the scientific recipe design, the intensity of the fiber is effectively improved; the service life of the fiber is prolonged; meanwhile, the effects of saving the resources and protecting the environment can be achieved.

The invention discloses a nano cellulose, thermoplastic and thermosetting synergistically modified asphalt material and a preparation method thereof. The material comprises, by weight, 100 parts of matrix asphalt, 0.5-3 parts of nano cellulose, 0.2-0.4 part of an emulsifier, 2-9 parts of a thermoplastic polymer, 0.1-0.3 part of a stabilizer, 47-78 parts of a thermosetting polymer and 14-30 parts of a curing agent.

The invention belongs to the technical field of building materials, and particularly relates to a high-strength light gypsum keel and application thereof. The high-strength light keel gypsum is prepared from 60-80 parts of industrial byproduct calcined gypsum, 8-10 parts of light calcium carbonate, 6-8 parts of superfine slag powder, 20-30 parts of porous polypropylene fibers, 2-3 parts of a retarder, 1-2 parts of a water reducing agent and 4-8 parts of cement. The gypsum keel prepared in the invention is high in compressive strength and flexural strength and light in weight; and the keel canbe widely applied to building partition keels.

The invention discloses a crankshaft structure of an in-line three-cylinder engine. Two ends of the crankshaft are a free end and a power output end, projection is carried out along a direction from the free end to the power output end, a first toggle, a second toggle and a third toggle are sequentially arranged along the clockwise direction, an included angle between the first toggle and the second toggle and between the second toggle and the third toggle is 120DEG, and the firing order of the crankshaft is 1-2-3. The firing order is in favor of reducing the torsional vibration amplitude of a crankshaft system and improving the strength, the torsional oscillation and the strength of the crankshaft.

The invention discloses a green waterproof non-gel type bath-sanitation wall body plate and a manufacturing method thereof. The green waterproof non-gel type bath-sanitation wall body plate sequentially comprises a face layer, a base layer and a reinforcing layer from outer surface to back surface; a structure body is arranged in the reinforcing layer in a wrapping manner. The green waterproof non-gel type bath-sanitation wall body plate adopts a multi-layer composite layer, wherein a PVC stone plastic plate subjected to high-temperature extrusion molding is combined with a PVC membrane together in an integral hot melting and hot compressing manner without glue, and the adhesion force is strong without delaminating, and environment is protected; the formed PVC stone plastic plate is coated with fiber reinforced plastics, and very strong adhesion force can be formed between the two layers after solidification without other adhesives; the raw materials are environmentally friendly and safe, and does not have toxic and side effects in the production process; the flexibility and the hardness of a PVC stone plastic plate material is regulated by regulating a relative ratio of components in the base layer, the mechanical properties such as strength, rigidity and shock resistance performance of the whole body are improved through the reinforcing layer formed by unsaturated polyester resin and reinforced fibers with a proper ratio, and the reinforcing layer per se can generate very strong adhesion force with the base layer; a unique latticed keel improves the structure bearing capacity of the whole plate.

The invention discloses anti-radiation outer wall real stone paint. The anti-radiation outer wall real stone paint is prepared from, by weight, octa-phenyl cage type polysilsesquioxane modified sulfonated polyimide, natural colored sand, a water-retaining agent, an antifoaming agent, lignocellulose, an antifreezing agent and KH-560. The invention further discloses a preparation method and a construction method of the anti-radiation outer wall real stone paint.