摘要:
The present invention relates to a solid crosslinkable resin composition which is ductile at ambient temperature, comprising: - (A) a crosslinkable resin which is in liquid form at a temperature of between 60 and 80°C; - (B) an optional crosslinking agent; and - (C) additives, said additives comprising: - (C1) a solid metallic filler in powder form; - (C2) a thermoplastic; - (C3) an optional chain extender which can react with the resin (A); - (C4) optionally, organic or inorganic non-metallic particles or fibres; the additives (C) representing between 20% and 55% by weight of the composition, advantageously between 30% and 50% by weight, advantageously between 40% and 50% by weight. It also relates to the use thereof for filling the empty spaces of a composite structure, to the crosslinked composition obtained, to the composite structure incorporating the crosslinked composition and to a process for manufacturing this composite structure.
摘要:
A two-component curable epoxy resin system is disclosed. The resin system includes an epoxy resin component containing at least 80% by weight of a polyglycidyl ether of a polyphenol that has an epoxy equivalent weight of up to about 200 and contains no more than 2% by weight of monohydrolyzed resin species. The system also includes a hardener mixture that has an amino hydrogen equivalent weight of from 35 to 90 and contains at least 90% by weight of a mixture of (i) from 5 to 75% of the combined weight of (i), (ii) and (iii) of one or more compounds that have at least two primary and/or secondary aliphatic amino groups and which have no phenolic groups; (ii) from 10 to 95% of the combined weight of (i), (ii) and (iii) of one or more aminophenol compounds that contain one or more primary and/or secondary aliphatic amino groups and at least one phenolic group and (iii) from 0 to 50% of the combined weight of (i), (ii) and (iii) of one or more phenolic compounds that contain two or more phenolic groups and do not contain primary or secondary amino groups. The epoxy resin component and hardener mixture are present in amounts sufficient to provide from 1.05 to 1.35 equivalents of aliphatic amine hydrogens per equivalent of epoxide groups provided by the epoxy resin component. The system has beneficial curing characteristics that make it useful for producing fiber-reinforced composites in a resin transfer molding process.
摘要:
A composite laminate material 310, 510, 710, 910 is disclosed. The composite laminate material 310, 510, 710, 910 includes a plurality of adjacently disposed plies 314, 514, 714, 914. At least one of the plies 314, 514, 714, 914 is configured as a terminated ply 320, 520, 720, 920. Additionally, a ply drop 312, 512, 712, 912 is defined by the terminated ply 320, 520, 720, 920, wherein the ply drop 312, 512, 712, 912is modified to reduce stress concentrations within the composite laminate material 310, 510, 710, 910.
摘要:
The present invention provides a composite, in particular in the field of aviation and aerospace, comprising an omega-stringer that comprises a comb portion, and a connecting member that is connected at one end to the comb portion of the omega-stringer and can be connected at its other end to a standard coupling member. The idea underlying the present invention consists in forming omega-stringers with a connection zone that, on the one hand, is coupled to the comb portion of the omega-stringer and therefore makes it possible to transfer comparatively high loads and, on the other hand, can be connected to a standard coupling member so as to utilize the advantages of standard coupling members of this type when connecting omega-stringers to other stringers, for example T-stringers or other omega-stringers.
摘要:
Disclosed is a molten molding material. The molten molding material has a resin, and also has a reinforcement included with the resin. The reinforcement was subjected to a degree of motion relative to the resin. The degree of motion being sufficient enough so that a mechanical property of the resin including the reinforcement once solidified is within an optimum range.
摘要:
In a method of the present invention for producing an unvulcanized-rubber/steel-wire composite, steel wires are continuously drawn, and the drawn steel wires are not taken up but fed to a rubber coater so that the steel wires are coated with unvulcanized rubber. An apparatus of the present invention for producing an unvulcanized-rubber/steel-wire composite comprises a wire drawer for drawing steel wires continuously, and a rubber coater for coating the steel wires with unvulcanized rubber, and the steel wires drawn by the wire drawer are not taken up but are led to the rubber coater.
摘要:
The invention provides composites of ultra-high molecular weight polyethylene reinforced with ultra-high molecular weight polyethylene anisotropic reinforcement of high strength and modulus. The composites have superior mechanical properties related to non-filled ultra-high molecular weight polyethylene, including higher strength, impact strength, increased creep resistance, and improved modulus. The composites may be sterilized for biomedical use, using gamma radiation and other techniques. Further, the composites are resistant to the effet of body fluids and have lower creep rates so that they will provide implant life. The composites may be cross-linked by exposure to an acetylene environment. Also, the composites find use in other high strength, high compact applications such as sports equipment.
摘要:
A plastic-made reinforced structure comprising a thermoplastic resin-made plate and cylindrical rib(s) made of the same resin as that of said plate, connected to at least one side of said plate perpendicularly to the side so that the plate and the rib(s) form one piece, in which structure the following relationships hold: d 1 ≧ 20 mm, 1 > d 1 /d 2 ≧ 0.7, H ≧ 30 mm, and 1 ≧ d 1 /H ≧ 0.3 wherein d 1 and d 2 are the inside and outside diameters of each rib at the root of the rib, i.e. the joint of the rib to the plate; and H is the length of each rib from the root to the front end.
摘要:
In a thin film coating method, tack members are brought close to a surface of a substrate to temporarily tack the forward end portion of a web of thin film to the forward end of the substrate. Compression-bonding rollers are then brought into a tacking position where the forward end portion of the thin film is tacked from a standby position where the compression-bonding rollers do not touch the tack members to make compression-bonding contact with the forward end portion of the tacked thin film after the tack members are moved away from the surface of the substrate. The compression-bonding rollers are then rotated at the tacking position for the double purpose of conveying the substrate and adhering the thin film to the substrate. In this process, the forward end of the substrate is detected to produce a detection signal at a detection position before the substrate is conveyed to the tacking position, the conveyance of the substrate is stopped after the forward end of the substrate has been conveyed from the detection position to the tacking position, and the tack members are brought close to the conveyance passage of the substrate while the forward end of the substrate is being conveyed from the detection position to the tacking position to thereby tack the forward end of the thin film to the surface of the substrate after the forward end of the substrate is stopped at the tacking position.