摘要:
PROCESSES FOR FORMING SHAPED POLYESTER ARTICLES OF AN OXYBENZOYL POLYESTER COMPRISING COMPRESSING GRANULES OF THE OXYBENZOYL POLYESTER INTO A SLUG AND IMPACT COMPRESSING THE SAID SLUG INTO A DESIRED SHAPE BY IMPARTING TO SAID SLUG AN ENERGY OF FROM 10,000 FOOT POUNDS TO 150,000 FOOT POUNDS.
摘要:
The invention relates to a subframe for a motor vehicle, comprising an upper shell, a lower shell made from a fiber-reinforced plastic and a rib structure for stiffening the upper shell, wherein the upper shell is composed of a metallic material and the rib structure is composed of a plastic reinforced with short fibers and is formed integrally from the lower shell. The invention furthermore relates to a method for producing a subframe, wherein the lower shell together with the rib structure connected integrally therewith is formed from a stack of plies of a fiber-reinforced thermoplastic and joined to an upper shell made from a metallic material.
摘要:
The invention relates to a subframe for a motor vehicle, comprising an upper shell, a lower shell made from a fiber-reinforced plastic and a rib structure for stiffening the upper shell, wherein the upper shell is composed of a metallic material and the rib structure is composed of a plastic reinforced with short fibers and is formed integrally from the lower shell. The invention furthermore relates to a method for producing a subframe, wherein the lower shell together with the rib structure connected integrally therewith is formed from a stack of plies of a fiber-reinforced thermoplastic and joined to an upper shell made from a metallic material.
摘要:
The present invention provides: a method and apparatus for producing a press molded article from a sheet that contains carbon fibers and a thermoplastic resin, said method and apparatus having improved production efficiency by reducing the heating time; and a press molded article which contains carbon fibers and a thermoplastic resin and is prevented from deterioration in the properties inherent in the starting materials. The present invention provides a press molded article containing carbon fibers and a thermoplastic resin, which is characterized in that: (i) the carbon fibers are contained in an amount of 5-50 vol % in 100 vol % of the press molded article; (ii) the press molded article has a volume resistivity of from 5×10−3 to 1×10−1 Ω·cm; and (iii) the press molded article has a thickness of 0.25-30 mm.
摘要:
An improved composition of titanium sintered titanium carbide is provided. The composition provides an improved degree of strength and toughness and improved compatibility with medical imaging. The composition provides good compatibility with sintered polycrystalline diamond, achieving a good mechanical fit in terms of the combined compressibility and thermal expansion during the sintering process to minimize stress or cracking between the substrate and the diamond layer.
摘要:
Polycrystalline diamond compacts for use in artificial joints achieve reduced corrosion and improved biocompatibility through the use of solvent metal formulations containing tin and through the control of solvent metal pore size, particularly in inner layers of the compact. Solvent metal formulations containing tin have been discovered which provide sintering ability, part strength, and grind resistance comparable to levels achieved by using CoCrMo solvent metals. It has been discovered that limiting the solvent metal pore size in the diamond layers minimizes or eliminates the occurrence of micro cracks in the solvent metal and significantly reduces the corrosion of the compact as manifested by the release of heavy metal ions from the compact. Polycrystalline diamond compacts which utilize both the solvent metal formulations containing tin and the control of pore sizes achieve significantly reduced corrosion and improved biocompatibility compared to prior art polycrystalline diamond compacts.
摘要:
A medical prosthesis for use within the body which is formed of radiation treated ultra high molecular weight polyethylene having substantially no detectable free radicals, is described. Preferred prostheses exhibit reduced production of particles from the prosthesis during wear of the prosthesis, and are substantially oxidation resistant. Methods of manufacture of such devices and material used therein are also provided.
摘要:
A device is formed by a discontinuous process into a bone screw, plate, or fastener, wherein the device has a degree of polymer alignment and strength, and upon reheating above glass transition temperature of the polymer, the device remains dimensionally stable, as it maintains its dimensions, strength, and degree of polymer orientation. In practice of the present invention, the polymer slug is pressed into the die cavity by the actuation of ram press, causing the slug to conform to the die cavity.