36results about How to "Improved impact characteristics" patented technology

An airfoil assembly (30) comprises a composite airfoil (40) having a leading edge (32) and a trailing edge (34), a pressure side (36) extending between the leading edge and the trailing edge, a suction side (38) extending between the leading edge and the trailing edge, opposite the leading edge, a metallic leading edge assembly (130) disposed over the composite air-foil, the metallic leading edge assembly including a high density base (50), the metallic leading edge assembly also including a nose (60) disposed over the base, an adhesive bond layer disposed between the composite airfoil and the metallic leading edge assembly.

A bumper system includes a rollformed tubular beam with bracket mounts welded to a rear surface for mounting to vehicle frame rails. The illustrated beam has a continuous tubular cross section for its entire length, and includes a center section, corner-forming end sections, and mounting sections connecting ends of the center section to the end sections. The center, end and mounting sections can be linear or similarly curved or differently curved. The center, end and mounting sections can be similarly or differently locally annealed as part of being tuned to specific impact loading criteria, including annealing all or part of cross-sectional areas. The annealing can be done in-line with a rollforming process, such as to assist with forming tight radii in the beam for meeting packaging/space-related requirements, or can be part of a secondary process for advantageously affecting impact strengths in selected localized areas.

The invention is a temperature and blight insulated aeroponics root chamber built with opaque High-Density EPP (Expanded Polypropylene). The chamber is a fully or partially enclosed container to host plant roots, to provide thermal insulation and light blockage functions, and to control humidity, temperature, and liquid leakage inside of the growth environment. The chamber may be produced with molding process to create seamless body construction, or may consist of multiple components. There are outlets and inlets through the chamber enclosure for the flows of nutrients and wastes. The chamber may contain one or more optional nutrient reservoirs. The chamber may be in different shapes and colors. The chamber may work with one or more temperature control devices.

The invention discloses a device and a method for dry-wet combined anaerobic fermentation for producing a biogas. The device for dry-wet combined anaerobic fermentation for producing the biogas comprises first pretreatment equipment, a dry-type anaerobic fermentation tank, biogas collection equipment, material conveying equipment, solid-liquid separation equipment, second pretreatment equipment, awet-type anaerobic fermentation tank, flocculation dehydration equipment and a sludge pump, wherein biogas dregs generated from the dry-type anaerobic fermentation tank are subjected to solid-liquidseparation and are fed into the wet-type anaerobic fermentation tank; and biogas slurry generated from the wet-type anaerobic fermentation tank is subjected to flocculation dehydration and is flown back to the dry-type anaerobic fermentation tank. The device for dry-wet combined anaerobic fermentation for producing the biogas, which is disclosed by the invention, is reasonable in design, simple instructure, relatively high in organic matter conversion rate, relatively high in volume gas generation rate, relatively good in material impact resistance and wide in application range.

The purpose of the present invention is to provide a heat-resisting steel for exhaust valves, which contains a relatively small amount of Ni and has excellent mechanical characteristics (such as tensile strength, fatigue strength, wear resistance and hardness) at high temperatures and excellent corrosion resistance. The present invention provides a heat-resisting steel for exhaust valves, which contains 0.45 mass% or more but less than 0.60 mass% of C, 0.30-0.50 mass% (exclusive) of N, 19.0 mass% or more but less than 23.0 mass% of Cr, 5.0 mass% or more but less than 9.0 mass% of Ni, 8.5 mass% or more but less than 10.0 mass% of Mn, 2.5 mass% or more but less than 4.0 mass% of Mo, 0.01 mass% or more but less than 0.50 mass% of Si and 0.01 mass% or more but less than 0.30 mass% of Nb, with the balance made up of Fe and unavoidable impurities. This heat-resisting steel for exhaust valves satisfies 0.02 <= Nb/C < 0.70 and 4.5 <= Mo/C < 8.9.

The invention provides a high-strength steel sheet excellent in stretch-flange characteristics after working and in corrosion resistance after coating. A steel sheet which has a composition containing by mass C: 0.02 to 0.20%, Si: 0.3% or below, Mn: 0.5 to 2.5%, P: 0.06% or below, S: 0.01% or below, Al: 0.1% or below, Ti: 0.05 to 0.25%, and V: 0.05 to 0.25% with the balance consisting of Fe and unavoidable impurities and a substantially ferrite single-phase structure wherein the contents of Ti, V, and solid-soluted V in precipitates of less than 20nm in size are 200 to 1750 mass ppm, 150 to 1750 mass ppm, and 200 to less than 1750 mass ppm respectively.

The invention relates to a multilayer co-extrusion transparent high-impact antistatic polycarbonate composite material and a preparation method thereof. The composite material comprises two surface layers on the outermost layer and a core layer between the two surface layers, the two surface layers are static dissipation layers, and the core layer is a polycarbonate layer; the static dissipation layer comprises the following components in parts by weight: 50-95 parts of copolymerized PC resin; 5-40 parts of an antistatic auxiliary agent; and the polycarbonate layer is made of pure polycarbonate or functional polycarbonate. The composite material has the characteristics of good antistatic property, high transparency, high strength and high impact.

Provided are a polycarbonate resin composition, a molded article, and a structure member for solar photovoltaic power generation, the polycarbonate resin composition including: (A) 100 parts by mass of a resin mixture formed of 30 mass % to 100 mass % of a polycarbonate-polyorganosiloxane copolymer (A-1) having a repeating unit represented by the general formula (I) and a repeating unit represented by the general formula (II), and having an average chain length n of a polyorganosiloxane moiety of from 70 to 500, and 70 mass % to 0 mass % of an aromatic polycarbonate resin (A-2) except the polycarbonate-polyorganosiloxane copolymer (A-1); (B) 0.08 part by mass to 0.3 part by mass of a silsesquioxane; (C) 0.05 part by mass to 0.2 part by mass of an alkaline metal salt and/or an alkaline earth metal salt of an organic sulfonic acid; (D) 0 parts by mass to 0.3 part by mass of a polytetrafluoroethylene having a fibril-forming ability; (E) 1 part by mass to 10 parts by mass of titanium dioxide; and (F) 0.1 part by mass to 3 parts by mass of carbon black.

This door inner panel is a door inner panel formed of a metal sheet and includes a first panel portion having a first top sheet portion and a first standing wall portion connected to the first top sheet portion, a second panel portion having a second top sheet portion disposed with a gap with the first top sheet portion of the first panel portion and a second standing wall portion connected to the second top sheet portion, a flange portion connected to the first standing wall portion and the second standing wall portion, and a flat sheet portion disposed between the first panel portion and the second panel portion, the first standing wall portion and the second standing wall portion respectively have a level difference portion, and both ends of the flat sheet portion are integrated with the flange portion or the level difference portions.

The invention provides a high-glossiness flame-retardant PC/PET/nano-kaolin composite material and a preparation method thereof. The composite material is prepared from the ingredients: 33-55 parts of PC, 20-30 parts of PET, 5-10 parts of nano kaolin, 3-5 parts of barium sulfate, 10-15 parts of halogen-free flame retardant, 5-8 parts of toughening agent, 2-4 parts of compatibilizer, 0.3-0.5 part of antioxidant, 0.3-0.5 part of ester exchange inhibitor, 0.5-1.5 parts of nucleating agent, 0.3-0.5 part of lubricant and 0.4-0.8 part of high-glossiness auxiliaries. The high-glossiness and high-impact 5VA flame-retardant PC/PET/nano-kaolin composite material prepared by the method provided by the invention has very high weather resistance, flame retardance and high-impact property and has a very good resisting effect on solvents, oil stains and other chemicals. The problems that ordinary PC materials are poor in oil resistance and suffer from stress cracking, ordinary PC/ABS hardly reaches a 5VA flame-retardant level, PC/PET/inorganic filler is low in impact, and ordinary PC/PET has the characteristics of high shrinking percentage, low strength, easiness in ester exchange, and the like are successfully solved. The PET endows alloy with better oil resistance and heat resistance, and the nano kaolin endows the alloy with excellent dimensional stability, flame retardance and rigidity.

The invention discloses a pendulum bob shock test apparatus table board with a locking guide rail device. The pendulum bob shock test apparatus table board comprises an impact table board, a table board guide rail and a table body guide rail, wherein the impact table board is fixed on the table board guide rail; the table body guide rail is fixed on an impact table base; the impact table board and the table board guide rail are arranged on the table body guide rail in a sliding manner as a whole; an adjusting bolt is arranged at the bottom of the table body guide rail and used for adjusting the depth of parallelism of the table body guide rail and a to-be-tested pendulum bob; and the table board guide rail is of a square frame structure. The pendulum bob shock test apparatus table board and the guide rail device disclosed by the invention have better table board uniformity, repeatability and stability, and simultaneously have locking functions, loosening of the table body caused by repeated impact of the table board at present is avoided, and the impact test efficiency is greatly improved.

The invention relates to an adjustable-inductance solenoid type superconducting current limiter, which comprises a plurality of solenoids connected in series. Superconducting coils are fixed to a solenoid type current limiter framework through current leads, and different solenoids are connected through the current leads on the solenoid type superconducting current limiter framework, wherein the connection modes of every two adjacent solenoids in the solenoids connected in series comprise a reverse series connection mode and a forward series connection mode. On one hand, the solenoid connection mode can be selected to make the influence on a power grid under a normal operation condition small; and on the other hand, the solenoid connection mode can select a connection mode with good impactcharacteristics and high fault current suppression rate. Solenoid connection modes under the two conditions are analyzed, and a connection mode with good characteristics under the two conditions is selected.

Provided is a method of preparing a continuous fiber reinforced composite, and the method includes impregnating fibers provided from at least one fiber creel or metal wires provided from at least one metal wire creel in a thermoplastic resin to form a melt; molding a shape of the melt by using a mold and curing the resultant by heating in a heating tube to form a primary cured product, as a primary molding process; re-molding the primary cured product by using the mold again and curing the resultant by heating in the heating tube to form a secondary cured product, as a secondary molding process; and cooling, pultruding, and cutting the secondary cured product to perform finishing of the product.