35results about How to "Guaranteed basic strength" patented technology

The invention discloses a container type house unit, comprising a container house body, wherein the front end wall and the rear end wall of the container house body are respectively provided with a door (13) for entering the container house body; the front end and the rear end of the of the container house body are respectively provided with a balcony; the balcony and the container house body areformed into a whole; the left side and the right side of each balcony are respectively provided with an access used for the balcony; and side wall on one side of the container house body is provided with a piping shaft (15). In addition, the invention also provides a modularized group building residential building assembled by the container type house unit. According to the container type house unit and the modularized group building residential building formed by the container type house unit, the construction of the original container type residential building is kept, and the basic strength of the container type house is guaranteed. On the basis of the existing container type house, the reliability and the operability of the product can be perfected, the quality of the product is guaranteed, and the container type house unit is suitable for the requirement of industrial production.

The invention relates to a thermoplastic composite material, in particular to a high-strength combination reinforced thermoplastic composite material board. The high-strength combination reinforced thermoplastic composite material board has a three-layer structure and comprises an upper fabric layer, a lower fabric layer and an extruding layer, wherein both the upper fabric layer and the lower fabric layer are knitted by combined filament yarns formed by glass fibers and polypropylene fibers; and the extruding layer is arranged between the upper fabric layer and the lower fabric layer and formed by uniformly mixing the long glass fibers and the polypropylene. Compared with a long glass fiber reinforced board, the reinforced polypropylene composite material board improves the tensile strength, bending strength and modulus, impact strength, and the like by more than 80 percent along the glass fiber direction of a fabric. A reinforced polypropylene composite material board by combining a bidirectional fabric with the long glass fiber improves strength, modulus, and the like by more than 60 percent in two same directions with the glass fibers in the fabric. The upper fabric layer and the lower fabric layer of the invention adopt the glass fibers which have flowability compared with the long glass fiber, and a part can be reinforced as required; and a middle layer adopts the long glass fibers, and the basic strength of the board can be ensured.

The invention discloses low carbon, low boron, and high chromium alloy steel and a preparation method thereof which relates to the technical field of alloy steel. The low carbon, low boron, and high chromium alloy steel includes, by weight, 0.05-0.30% of carbon, 1-3.0% of silicon, 0.8-1.3% of manganese, <0.04% of phosphorus, <0.04% of sulfur, 8-13% of chromium, 0.5-2.5% of nickel, 0.1-0.8% of molybdenum, 0.03-0.25% of boron, 0.1-0.3% of aluminum, 0.05-0.2% of tin, 0.3-1.0% of vanadium, 0.1-1.5% of tungsten, 0.05-0.3% of copper, 0.005-0.015% of tantalum, 0.05-0.15% of cobalt, 0.05-0.25% of niobium, 0.8-2.0% of cerium, 0-0.08% of titanium, with the balance being iron and unavoidable impurities. The alloy steel of the invention enables high toughness and impact resistance performance to be ensured, enables wear resistance and hardness to be improved, is easy to control in process, and is suitable for civilian use and promotion.

The application provides a metal sectional material and wood-plastic co-extrusion moulded composite plate. The metal sectional material and wood-plastic co-extrusion moulded composite plate comprises a wood-plastic frame and a metal sectional material, wherein the wood-plastic frame is provided with a first chamber; the metal sectional material is located in the first chamber; the wall surface of the first chamber is bonded with the surface of the metal sectional material; the metal sectional material is provided with a plurality of prefabricated holes; the first chamber of the wood-plastic frame is provided with projections embedding into or penetrating through the prefabricated holes; the projections are integrally moulded with the wood-plastic frame, wherein the wood-plastic frame is made from a foamed wood-plastic material, and the metal sectional material is an open metal sectional material. According to the co-extrusion moulded composite plate provided by the embodiment of the invention, the open metal sectional material is used, and a closed shape is not used, thus ensuring the basic strength of the composite plate, saving the consumption of steel, and creating conditions for realizing compressed air inner-cooling for an extrusion mould.

The invention discloses a low-carbon low-boron medium-chromium alloy steel, and a preparation method thereof, and belongs to the technical field of alloy steel manufacturing. The low-carbon low-boronmedium-chromium alloy steel comprises 0.05 to 0.30% of carbon, 1.0 to 3.0% of silicon, 0.8 to 1.3% of manganese, phosphor of 0.04% or lower, sulfur of 0.04% or lower, 3.5 to 7.9% of chromium, 0 to 0.08% of titanium, 0.3 to 2.0% of nickel, 0.1 to 0.5% of molybdenum, 0.03 to 0.25% of boron, 0.1 to 0.3% of aluminium, 0.5 to 1.5% of cerium, 0.02 to 0.1% of tin, 0.3 to 1.0% of vanadium, 0.1 to 1% of tungsten, 0.05 to 0.3% of copper, 0.005 to 0.015% of tantalum, 0.05 to 0.15% of cobalt, 0.05 to 0.25% of niobium, and the balance iron and unavoidable impurities. The hardness of the low-carbon low-boron medium-chromium alloy steel is HRC45-55, the impact energy is 8 to 15J/mm<2>. The preparation method is capable of guaranteeing the high toughness and impact resistance, and improving the wear resistance and hardness, is convenient to control, and is suitable for civil applications and popularization.

The invention relates to a core-spun yarn, the section of which is circular or rectangular. The core-spun yarn comprises an outer skin and a core material (3), wherein the outer skin comprises an outer strip steel layer (1) and an inner metal layer (2); the metal layer (2) is an aluminum layer; and the core material (3) is formed by uniformly mixing silicon powder and calcium powder. According to the core-spun yarn provided by the invention, as the outer skin comprises the outer strip steel layer and the inner metal layer and is used for preparing the core-spun yarn with the core material, and in a metal-stream inoculation process, the outer strip steel layer ensures the basic strength of the core-spun yarn. As the inner metal layer is the aluminum layer, the melting point of which is lower than that of steel, the melting time of the outer skin is integrally shortened under the condition that the basic strength of the core-spun yarn is ensured. In the molten steel treatment process, the core-spun yarn can be quickly molten to fully exert the effect of a powdery inoculant, so that the strength and toughness of the steel are guaranteed.

The invention relates to a beverage straw capable of being produced at low cost. The beverage straw is a hollow tube body with two ends communicated in a penetrating mode, and comprises an aluminum foil tube layer and a paper tube layer, wherein the paper tube layer and the aluminum foil tube layer are overlapped completely inside and outside to be laminated.

The invention relates to a thermoplastic composite, in particular to a high-strength combination reinforced thermoplastic composite plate, having a three-layer structure, including upper and lower fabric layers, both woven of combined fiber yarns formed of glass fiber and polypropylene fiber, and an extruded layer formed by mixing well long glass fiber and polypropylene and arranged between the upper and lower fabric layers. Compared with long glass fiber reinforced plates, the unidirectional fabric combination long fiber reinforced polypropylene composite plate has the advantages that tensilestrength, flexural strength and modulus, impact strength and the like are increased by 80% and above in the fabric glass fiber direction; the bidirectional fabric combination long glass fiber reinforced polypropylene composite plate has strength, modulus and the like all increased by 60% and above in the two identical directions of the glass in the fabric. The upper and lower fabric layers are made of glass fiber which is mobile as compared to long glass fiber, and a certain part can be reinforced as required; the intermediate layer is made of long glass fiber so that basic strength of the plate can be guaranteed.

The present invention provides a co-extrusion molding composite board. The co-extrusion molding composite board comprises a wood plastic frame, a foaming layer and a metal profile; the wood plastic frame is provided with a first cavity; the metal profile has an opening; the metal profile is positioned in the first cavity; the wall surface of the first cavity is bonded to the surface of the metal profile; the foaming layer is put in a space enclosed by the first cavity and the metal profile; the foaming layer is bonded to the wall surface of the first cavity and the surface of the metal profile; and the foaming layer is prepared by foaming materials. According to the composite board, the internal metal profile effectively provides mechanical strength, the metal profile, the foaming layer and the wood plastic frame are composited and integrated, so that the requirement for strength of the wood plastic part is reduced, the foaming technology can be adopted for materials of the wood plastic frame, wood plastic materials are saved, and heat and sound insulation performance of the composite board applied as a wall board is largely improved.

The invention discloses a hydrogen-enriching electrolysis device which comprises an upper shell and a lower shell, wherein an opening part is arranged on the upper part of the upper shell; an exhaust port is formed on the lower shell; an upper chamber is arranged in the upper shell; a lower chamber is arranged in the lower shell; an electrode unit is arranged in a chamber structure encircled by the upper chamber and the lower chamber; a sealing pad for separating the upper and lower surfaces of the electrode unit is arranged on the upper part of the electrode unit; the electrode unit comprises a first electrode slice, a second electrode slice and a diaphragm arranged between the first electrode slice and the second electrode slice; a plurality of first through holes are formed on the first electrode slice; and a plurality of second through holes corresponding to the first through holes are formed on the second electrode slice. The invention aims to provide the hydrogen-enriching electrolysis device requiring no water draining and having high hydrogen production efficiency.

The invention discloses a low-chrome wear-resistant alloy steel, and a preparation method thereof. The preparation method comprises following steps: technology target value determination, material preparation, melting, sampling and adjusting, casting and moulding, and hot treatment. The low-chrome wear-resistant alloy steel comprises, by weight, 0.25 to 0.35% of carbon, 0.6 to 1.5% of silicon, 0.8to 1.3% of manganese, phosphor<0.04%, sulfur<0.04%, 1 to 3.5% of chromium, 0.1 to 0.5% of nickel, 0.1 to 0.3% of molybdenum, 0.03 to 0.25% of boron, 0.1 to 0.3% of aluminium, 0.1 to 1.2% of cerium, 0.02 to 0.1% of tin, and the balance iron. According to the preparation method, both wear resistance and hardness requirements are satisfied, the toughness is increased greatly, impact resistance is excellent, impact energy is as high as 5 to 8 joules, and cobblestones can be crushed using the low-chrome wear-resistant alloy steel easily.

An extrusion die for a composite sheet material formed by co-extrusion molding of a metal section material and wood plastic comprises a mold body and a separation plate; the separation plate is arranged in a cavity formed in the mold body, and the metal section material is an opened metal section material; a hollow container is enclosed by the separation plate and the metal section material sent into the cavity, and a gap used for injecting a fused wood plastic foaming material is formed between the container and the mold body; and the extrusion mold is provided with an air channel, and the air channel successively passes through the mold body, the cavity and the separation plate and enters the container space. The extrusion mold in the embodiment is capable of producing the composite sheet material formed through co-extrusion molding of the metal section material and wood plastic, and through the air channel hollow space, too much of the fused wood plastic fluid is prevented from flowing into the hollow space, inner-cooling of the composite sheet material is realized, the cooling shaping efficiency is improved, and thus the production efficiency is improved.

The invention discloses a dissolved air type spinneret. The spinneret comprises a main pipe body (10), wherein the main pipe body (10) comprises a feeding segment (11), an air inlet segment (12), a slow flow segment (13) and a spinning segment (14) which are sequentially disposed; the air inlet segment (12) is connected to air pipes (20); the inner diameter of the slow flow segment (13) is greaterthan those of the air inlet segment (12) and spinning segment (14). The spinneret has the advantages that spun silk is easy to twist, and the elasticity and the water absorption performance are good.

The invention discloses a waterproof antibacterial coating fabric and a preparation technology thereof. The coating fabric comprises a base fabric and a waterproof antibacterial layer sequentially coating the surface of the base fabric. The waterproof antibacterial layer is prepared from, by weight, 50-65 parts of bamboo fiber, 15-25 parts of wasabi, 15-30 parts of wax gourd, 40-55 parts of a polyvinylidene chloride emulsion, 35-45 parts of acrylate copolymer and paraffin compound emulsion, and 10-15 parts of sodium carboxymethylcellulose. The coating fabric achieves the waterproof and antibacterial performance at the same time, the flexibility and mechanical property of the coating fabric are good, the waterproof antibacterial layer uniformly coats the base fabric, the attaching firmness is good, the coating fabric can be still well attached after being used for a long time, and the coating fabric has the long service life.

The invention provides a preparation method of a lithium-sulfur battery diaphragm. The method comprises: firstly, blending and weaving glass fibers, polyamide fibers and water-soluble vinylon fibers into a base film; securing basic strength, then preparing gel slurry from polyurethane fibers, nano microcrystalline cellulose, carboxyl polystyrene microspheres, sodium lignin sulfonate, tetraethyl orthosilicate and the like as raw materials, and extruding the gel slurry to two surfaces of the base membrane; finally, obtaining the diaphragm suitable for the lithium-sulfur battery through a seriesof post-treatment. The thickness, the strength, the porosity and the like are considered, the shuttle effect is inhibited, and the electrical property of the lithium-sulfur battery is greatly improved.