30results about How to "Low formability" patented technology

The lack of air flow under body armor, helmets, and thick garments can lead to excessive moisture build up and discomfort on the wearers body due to lack of heat removal and effective evaporation of sweat. By incorporating wick covered heat pipes or thermal conductors with air flow channels in the apparel contact area between the garments, helmets, and body armor the effectiveness air flow cooling and evaporation of sweat can be restored. Humidity or temperature auto-actuated bi-material valves are used to control this air-moisture-heat flow to achieve a controlled comfortable humidity-temperature environment and avoid excessive cooling. Supplementary air pumps, filters, dehydrators, fluid pumps, heating fluids, and cooling fluids may be incorporated to enhance the effectiveness. Biocides and hydrophilic materials are also incorporated on the wick coverings to avoid biological growth and maintain performance to achieve a healthy environment for the wearer.

There are provided an electronic component metal material which has low insertability/extractability, low whisker formability, and high durability, and a method for manufacturing the metal material. The electronic component metal material 10 includes a base material 11, an A layer 14 constituting an outermost surface layer on the base material 11 and formed of Sn, In or an alloy thereof, and a B layer 13 constituting a middle layer provided between the base material 11 and the A layer 14 and formed of Ag, Au, Pt, Pd, Ru, Rh, Os, Ir or an alloy thereof, wherein the outermost surface layer (A layer) 14 has a thickness of 0.002 to 0.2 μm, and the middle layer (B layer) 13 has a thickness larger than 0.3 μm.

The invention belongs to the field of manufacturing of aluminum alloy plates, and relates to an aluminum alloy plate with high bake hardenability and a preparation method thereof. The aluminum alloy plate with the high bake hardenability is prepared from, by weight, 0.4-0.9% of Mg, 0.6-1.4% of Si, 0.008-0.12% of Ti, 0.0005-0.04% of B, no more than 0.3% of Fe, 0.06-1.5% of Zn, 0.3-0.8% of Cu, 0.03-0.25% of Sn, no more than 0.15% of impurities and the balance Al, wherein the content of each the impurity is no more than 0.05%. By adoption of the aluminum alloy plate with the high bake hardenability and the preparation method thereof, the problem that MgO is likely to be formed on the surface of an aluminum alloy plate adopted by an automobile body covering part in the prior art, and consequentially, the binding property and corrosion resistance after painting of the automobile body covering part are poor is solved.

The invention discloses a special environment-friendly stabilizer for U-PVC calendered sheet, which is prepared from the following components in weight ratio: 260-300 kg of magnesium-aluminum-zinc composition, 50-150 kg of zinc stearate, and 1010-15-15 kg of antioxidant. 20kg, calcium acetylacetonate 40~68kg, tris(2-hydroxyethyl) isocyanurate 80~130kg, oxidized polyethylene wax 50~250kg, polyethylene wax 30~100kg. The stabilizer of the invention is suitable for continuous calendering and extrusion production of U-PVC sheet, and has moderate dosage, low cost, good production process stabilization effect, good rolling effect, smooth processing, smooth sheet surface, good plasticization, and satisfactory mechanical properties. The requirements of the national standard also have the advantages of non-toxicity and high environmental protection performance; the U-PVC sheet prepared by the stabilizer of the present invention has stable chemical properties, no rust, good impact resistance, and good transparency. Good insulation and low thermal conductivity; good formability and colorability, and low processing cost; the PVC sheet produced conforms to GB/T15267 "PVC Rigid Sheets and Films for Food Packaging" and conforms to YBB00212005 Polyethylene Vinyl chloride solid medicinal tablet.

The invention provides a martensite-ferrite-austenite complex-phase abrasion-resistant steel plate with a low yield ratio and a manufacturing method thereof. The manufacturing method of the steel plate comprises the steps of smelting different alloy components; manufacturing a steel billet through continuous casting; and carrying out heating, controlled rolling, controlled cooling, thermal treatment, and the like. The martensite-ferrite-austenite complex-phase abrasion-resistant steel plate is characterized in that (1) the manufactured steel plate is of a martensite-ferrite-austenite multi-phase composite structure; (2) the yield ratio of the manufactured steel plate is greatly decreased compared with that of a traditional abrasion-resistant steel plate, the yield ratio is smaller than orequal to 0.75, and the manufactured steel plate has excellent formability; (3) the hardness of the manufactured steel plate is 300 HB to 420 HB, and acquisition of good abrasion resistance is guaranteed; and (4) the abrasion resistance is excellent, and the abrasion resistance of the obtained abrasion-resistant steel plate is doubled or above compared with that of a single-martensite abrasion-resistant steel plate with the same hardness. The martensite-ferrite-austenite complex-phase abrasion-resistant steel plate has good welding performance and higher low-temperature impact toughness, and isparticularly applicable to manufacturing of devices or parts like concrete stirring tank rollers, dump truck carriages and pipelines for channel dredging.

The invention discloses a low-density and low-modulus polyurethane gel capable of being used as a filling material for a marine exploration streamer and a preparation method for the same. The polyurethane gel disclosed by the invention is formed by mixing and filling hydroxyl-terminated polybutadiene polyurethane prepolymer, polyether polyol and solvent oil under the action of a catalyst, wherein the density of the polyurethane gel is lower than 0.92 g/cm<3>, and the modulus of the polyurethane gel is lower than 5 MPa. The low-density and low-modulus polyurethane gel disclosed by the invention has good cohesive property, high extensibility and self-healing property, and excellent sound transmission performance; and can be used as a filling material for a marine exploration streamer for realizing the suspension, sound transmission and sonar signal acquisition of the exploration streamer.

The invention discloses a synthesis method and application of an unsaturated hyperbranched polyimide resin. The synthesis method comprises the following steps: 1) preparing a monomer, namely uniformlymixing raw materials, namely aromatic tertiary amine A3 and a dianhydride compound B2, adding a high-melting point solvent, and performing a reaction under a set condition so as to obtain an A2B typefunctional monomer; 2) performing a polymerization reaction, namely putting a catalyst into the A2B type functional monomer prepared in the step 1), performing a self-polycondensation reaction so asto obtain a yperbranched resin at the tail end of amino, further adding a free radical polymerization inhibitor and an end-capping reagent, performing a quenching reaction, controlling a branching degree, and performing reduced pressure distillation, thereby obtaining the unsaturated hyperbranched polyimide resin HP-PI. The polyimide resin prepared by using the synthesis method is relatively low in viscosity, good in solubleness, capable of effectively reducing the amount of diluents in the process that an insulating impregnating varnish is prepared, the cost can be reduced, and the toxicity can be degraded.

The invention discloses a low-cost third-generation automobile steel processing technology. The low-cost third-generation automobile steel processing technology comprises the following steps of carrying out smelting and casting, specifically, placing a medium manganese steel raw material in a vacuum induction furnace for smelting and casting so as to obtain a blank; carrying out hot rolling, specifically, placing the blank in a double-roller hot rolling mill for rolling so as to obtain a hot-rolled blank; carrying out acid pickling, specifically, placing the hot-rolled blank in acid liquor to be washed to be bright white, then washing the acid liquor on the surface of the hot-rolled blank clean with water and blow-drying the surface of the hot-rolled blank, and finally carrying out oiling treatment to obtain an acid-pickled blank; carrying out cold rolling, specifically, carrying out cold rolling on the acid-pickled blank through a straight-pull type four-roller reversible cold rolling mill so as to obtain cold-rolled third-generation automobile steel; and carrying out annealing, specifically, annealing the cold-rolled third-generation automobile steel so as to obtain the low-cost third-generation automobile steel. The third-generation automobile steel produced through the processing technology has the advantages of being low in cost, good in plasticity, good in forming performance, high in product of strength and elongation and the like, it is guaranteed that forming is facilitated while the mechanical property is not reduced, the whole processing technology is simple in process, and the production difficulty is low.

The invention belongs to the technical field of production of reduced iron powder, and particularly relates to a reduction method of iron ore powder. The reduction method of the iron ore powder comprises the following steps that under the hydrogen atmosphere, the iron ore powder is sequentially subjected to first-stage reduction, second-stage reduction and third-stage reduction, and reduced iron powder is obtained; the temperature of the first-stage reduction is 810-830 DEG C; the temperature of the second-stage reduction is 920-940 DEG C; and the temperature of the third-stage reduction is 945-960 DEG C. According to the reduction method of the iron ore powder, the hydrogen atmosphere is used as a reduction medium, the temperature in the production process is low, the whole reduction process is environmentally friendly, resources are saved, and the production cost is low.

The invention belongs to the technical field of composite resin materials, and particularly relates to a composite resin material for a pressure gas storage container and a preparation method thereof. The preparation method of the composite resin material for a pressure gas storage container, provided by the invention, comprises the following steps of: mixing carbon nanotubes and dispersed oil to prepare carbon nanotube slurry; mixing nylon 6 and high-density polyethylene to form a resin mixture; and melting the resin mixture in a twin-screw extruder, adding the carbon nanotube slurry, and carrying out extrusion granulation to obtain the composite resin material. According to the preparation method provided by the invention, the dispersity of the carbon nanotubes in the matrix resin can be improved, so that the low-temperature performance of the composite material is improved, and the heat dissipation performance is improved.

The present invention provides a formable hard coating composition, comprising a binder, comprising at least one acrylate oligomer and at least one monofunctional acrylate monomer and a crosslinking agent, comprising at least one multifunctional acrylate or methacrylate monomer. Furthermore, the present invention provides a coated film comprising a coextruded PC/PMMA film and a coating obtained by coating with the hard coating composition, wherein the coating has a dry film thickness according to ASTM B499 in the range of from ≥1 to ≤6 μm and preferably a crosslink density in the range of from ≥2·10⁻³ to ≤13·10⁻³. The coated films exhibit a combination of good formability and pencil hardness, solvent and chemical resistance which makes it particular useful for applications such as in-mold decoration processes.

The invention belongs to the technical field of polyurethane elastomer preparation, and particularly relates to a transparent fast- forming low-hardness thermoplastic polyurethane elastomerand a preparation method thereof. According to the invention, a triptycene derivative with a special structure is adopted as a chain extender, the derivative has H connected with N atom and C connected with O atom in the structure, the structure is helpful for forming hydrogen bonds between molecular chains, is helpful for fast and orderly arrangement of hard segments, and finally the structure enables the product to have better crystallization capability. In addition, due to the large steric hindrance of the triptycene derivative, crystallization is destroyed to a certain extent, and a polyol with lowermolecular weight is used as a soft segment, so that the final product-thermoplastic polyurethane elastomer has lower hardness, better formability and good transparency.