摘要:
A sizing agent for carbon fibers which comprises, as the indispensable ingredients, an epoxy resin having a viscosity of more than 1,000 P but up to 20,000 P at 50 .degree. C. and a urethane compound prepared from a polyol having an oxyalkylene unit with a polyisocyanate.
摘要:
An authentication certificate server receives an acquisition request of a confidential document which specifies a URI of a disclosable document obtained by removing a confidential element from the confidential document, the authentication certificate server transmits an acquisition request of the disclosable document to a public server and specifies a dictionary file based on the URI, and if the user has an access authority to the confidential element, the authentication certificate server transmits an acquisition request of a dictionary file to a confidential server. When the authentication certificate server receives the dictionary file from the confidential server and receives the disclosable document from the public server, the authentication certificate server restores the confidential document by returning the confidential element at a position in the disclosable document which position is specified by the dictionary file, and then transmits the confidential document thus restored to the terminal device.
摘要:
A glass run includes a main body portion and a pair of seal lips. Further, the glass run is constituted by a vehicle exterior side molded member and a vehicle interior side molded member divided at a bottom portion of the main body portion. Further, the vehicle exterior side molded member and the vehicle interior side molded member include engaging portions for engaging to be integrated with each other. By integrating the vehicle exterior side molded member and the vehicle interior side molded member by the engaging portions, the vehicle exterior side molded member is restricted from being shifted to move relative to the vehicle interior side molded member in a vehicle width direction and in a longitudinal direction of the vehicle interior side molded member.
摘要:
Disclosed is a carbon fiber of improved oxidation resistance, which has a specific volume resistance of at least about 1.2.times.10.sup.-3 ohm cm, and containing at least about 2 wt. % of nitrogen and less than about 0.07 wt. % of total metal impurities. The carbon fiber is produced by using as the precursor fiber an acrylonitrile copolymer fiber, which copolymer is comprised of at least 95 mole % of units derived from acrylonitrile and not more than 5 mole % of units derived from a carboxyl group containing monoethylenically unsaturated monomer or monomers; the hydrogen atom of at least one --COOH contained in each of the units derived from the carboxyl group-containing monomer or monomers being replaced with a cation selected from ##STR1## wherein R is H, (C1-3) alkyl or phenyl; the replacement being to such an extent that the units having the cation occupy at least 0.1 mole %, based on the copolymer; and which copolymer contains less than about 0.05 wt. % of the total metal impurities. All of the aqueous baths used in the course of producing the carbon fiber, i.e., aqueous coagulating, drawing, washing and oiling baths, are prepared from deionized or distilled water, and the aqueous oiling bath is prepared by using a cationic or nonionic oiling agent.
摘要:
[Problem to be Solved] When a wood raw material is heat-pressed in order to produce a woody material or woody board, steam is generated in an interior of the wood raw material. The heat-pressed wood raw material is then decompressed with the steam staying in the interior of the wood raw material. This causes a puncture or a rupture of the woody material. The puncture occurs in the last phase of the production process, thus spoiling the entire production process. In order to avoid the puncture, the wood raw material needs to be dried completely. This requires a large amount of energy.[Solution] In order to solve the foregoing problems, the present invention provides a heat pressing apparatus and a method for producing a woody material, the method including the steps of:(a): coating or spraying a bonding material on a wood raw material that is an aggregate composed of a single plate, a sheet-like article in which fibers are opened by a rolling, a thin stick-like article, a flake-like article, a strand-like article, and the like;(b): forming the wood raw material coated or sprayed with the bonding material in the step (a) into a specified shape; and(c): heat-pressing the wood raw material formed into the specified shape, while subjecting the wood raw material to degassing treatment to release the steam, which is generated and stays in the interior of the wood raw material, to the outside, thus to obtain the woody material.
摘要:
Shreds for reinforcement allowing the effective recycling of waste fiber converted products as resources, a fiber-reinforced product using the shreds, and a method of manufacturing the shreds and the product, the method comprising the steps of performing the cleaning treatment on the fiber converted products, impregnating resin into the fiber converted products, drying the resin-, shredding the fiber converted products by using a shearing type shredding machine, dispersing the shreds in a matrix, and manufacturing a formed product from the composite material of the shreds and the matrix.
摘要:
Carbon fiber superior in processability and in physical properties as a composite is obtained by treating carbon fiber with an epoxy resin composition incorporating a polyalkylene ether glycol derivative represented by the following general formula (I) or (II): ##STR1## wherein R.sub.1 is alkylene of C.sub.1 to C.sub.30, R.sub.2 is alkyl of C.sub.1 to C.sub.30, R.sub.3 and R.sub.4 are each hydrogen or methyl, R.sub.5 is glycidyl, X is ether linkage (--O--) or ester linkage ##STR2## m and n are integers of 1 to 20.
摘要:
A bundle of continuous carbon filament fibers treated with a sizing agent containing as an active component a water-dispersible resin composition consisting of about 65% to 95% by weight of water-dispersible urethane compound having at least one epoxy group and at least one quaternary ammonium group and about 5% to 35% by weight of an epoxy resin. The bundle has an excellent fretting resistance, is extremely handleable, and produces a carbon fiber-reinforced composite material having excellent physical properties.
摘要:
A glass run includes a main body portion attached to a channel portion DC provided along an inner periphery of a door frame and having an approximately U-shape in section, formed of a base bottom portion and an exterior sidewall portion and an interior sidewall portion extending from the base bottom portion and an exterior seal lip and an interior seal lip extending from almost front ends of the exterior sidewall portion and the interior sidewall portion to an inside of the main body portion. Moreover, for the glass run, by molding, integrally formed is an entire longitudinal area having a sectional shape having the main body portion and the interior and exterior seal lips and provided with an upper side portion corresponding to an upper edge portion of a door glass and a front vertical side portion and a rear vertical side portion corresponding to a front edge portion and a rear edge portion of the door glass.
摘要:
A glass run includes a main body portion and a pair of seal lips. Further, the glass run is constituted by a vehicle exterior side molded member and a vehicle interior side molded member divided at a bottom portion of the main body portion. Further, the vehicle exterior side molded member and the vehicle interior side molded member include engaging portions for engaging to be integrated with each other. By integrating the vehicle exterior side molded member and the vehicle interior side molded member by the engaging portions, the vehicle exterior side molded member is restricted from being shifted to move relative to the vehicle interior side molded member in a vehicle width direction and in a longitudinal direction of the vehicle interior side molded member.