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68 results about "Astm standard" patented technology

Conductive adhesive with conductive particles, mounting structure, liquid crystal device and electronic device using the same

A conductive adhesive which can withstand exposure to high temperature during a solder reflow process comprises an adhesive resin and a plurality of conductive particles mixed in the adhesive resin. The conductive particles each include a core formed of a synthetic resin and a conductive material coated around the core. The cores are each formed of a material having a thermal deformation temperature higher than that of the adhesive resin, and more preferably formed of a material having a thermal deformation temperature (18.6 kg / cm2) higher than 120° C. as measured according to the measuring method defined in the ASTM standard D648, and still more preferably formed of a material selected from the group consisting of polyphenylene oxide, polysulfone, polycarbonate, polyacetal, and polyethylene terephthalate.
Owner:BOE TECH GRP CO LTD

Aviation gasoline for aircraft piston engines, preparation process thereof

The subject of the present disclosure is an aviation gasoline composition that is lead-free and free of oxygenated compounds meeting the specifications of the ASTM standard comprising isopentane, isooctane, and (alkyl)aromatics. The aviation gasoline composition according to the disclosure may be obtained simply and economically from a mixture of hydrocarbon bases usually available in a refinery.
Owner:TOTAL MARKETING SERVICES

Concrete mix water

Water having alkalies selected from sodium, potassium and mixtures thereof dissolved therein is treated with a composition to reduce the concentration of the alkalies whereby the water is rendered usable according to ASTM standards to render the water usable as concrete mix water. The composition and the method of its use is disclosed herein, wherein the composition is selected from compounds in the group consisting of lithium carbonate, acid zirconium phosphate, carbon dioxide and mixtures thereof.
Owner:FRITZ INDS

Artificial heart valve pyrolytic carbon and testing method for fracture toughness of pyrolytic carbon composite material

The invention relates to an artificial heart valve pyrolytic carbon and a testing method for the fracture toughness of a pyrolytic carbon composite material. A testing method for the fracture toughness of the pyrolytic carbon composite material has not been brought forward yet. The testing method provided by the invention comprises the following steps: preparing a plurality of compact tension C(T) specimens from heart valve pyrolytic carbon or a composite material thereof and prefabricating sharp cracks on each specimen, wherein the specimen is of a specification as recommended by American ASTM standard E399, a gap is processed at the central part of the specimen, and upper and lower ends of the gap are respectively provided with a loading hole; then respectively clamping the two loading holes of the gap by using clamps and erecting an extensometer on an open end of the gap; and starting a loading platform to apply an upward load increasing at a uniform speed until the specimens fracture, determining critical load and effective crack length of each specimen, calculating fracture toughness according to the critical load and the effective crack length and taking a mean value as a fracture toughness test value of the heart valve pyrolytic carbon or the composite material thereof. The method provided by the invention can accurately determine fracture toughness of pure pyrolytic carbon and a pyrolytic carbon composite material.
Owner:HANGZHOU DIANZI UNIV

Method for forging bearing support forge piece

The invention relates to the technical field of forging, in particular to a method for forging a bearing support forged piece for a nuclear reactor pressure vessel. The method comprises the following steps: repeatedly performing upsetting-stretching on a suitable steel ingot at the temperature of between 1,200 and 800 DEG C to ensure that the forging ratio is no less than 4; and then sequentially performing heat treatment after forging, rough machining before the heat treatment, property heat treatment and machining after the heat treatment on the steel ingot to obtain the bearing support forge piece. The method has the advantages that: the actual grain size of the bearing support is less than 5; performance indexes of the bearing support forge piece meet requirements of RCC-M and an ASTM standards; using requirements of the bearing support forge piece for the nuclear reactor pressure vessel are met; the safety and the reliability are greatly improved; and technical requirements of the products are met.
Owner:上海新闵重型锻造有限公司

Concrete crack and joint sealant and method

Crack and joint sealant and method, an embodiment of the crack and joint sealant having a composition that is both gray and meets certain ASTM standards.
Owner:MARKETING ASSOCS
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