摘要:
A packer unit for an annular blowout preventer including an annular elastomer body including an elastomer having a unidirectional grain and a quantity of fiber longitudinally aligned with the grain of the elastomer. A method of forming a packing unit for a blowout preventer including forming a fiber reinforced elastomer by aligning fibers with a grain of an elastomer; cutting a portion from the fiber reinforced elastomer in the direction of the grain; loading the cut portion in a packing unit mold such that the grain of the fiber reinforced elastomer of the cut portion is parallel to a packing unit axis; and heating the loaded packing unit mold.
摘要:
The present invention uses a nitrogen-containing organic compound to be reacted with an alkyl sultone to obtain a zwitterion compound. The zwitterion compound is reacted with a heteropoly acid (HPA) to obtain an ionic liquid HPA (IL-HPA). The IL-HPA is used for acetylation of polyol and HOAc for obtaining polyol acetate. The IL used in the reaction can be recycled. Thus, problems of product separation, waste acid handling, and corrosion of facilities are solved and production through esterification is improved with a green catalysis.
摘要:
A cutting tool suitable for cutting a workpiece placed on a photocurable adhesive layer is provided. The cutting tool includes a main body, a cutting layer and a light emitting material. The cutting layer is disposed on a surface of the main body and is applicable in cutting the workpiece. The light emitting material is disposed inside the cutting layer or between the main body and the cutting layer. The light emitting material is suitable for emitting a light capable of curing the photocurable adhesive layer adjacent to a cutting path as the workpiece is cut by the cutting layer.
摘要:
A method for synthesizing exo-tetrahydrodicyclopentadiene (exo-THDCPD) and adamantane is provided, including isomerization of an endo-tetrahydrodicyclopentadiene (endo-THDCPD) as a reaction feed with an acidic ionic liquid of aluminum trichloride in a pseudo-fixed bed ionic liquid reactor. Reactants float as a droplet from bottom to top of the pseudo-fixed bed reactor, and finally are discharged from a side tube. A mole fraction of aluminum trichloride in the acidic ionic liquid of aluminum trichloride is from 0.5 to 0.9, a feeding rate of the reaction feed is 0.1-10 g/min, and a temperature for the isomerization is between 25-120° C.
摘要:
A cutting tool suitable for cutting a workpiece placed on a photocurable adhesive layer is provided. The cutting tool includes a main body, a cutting layer and a light emitting material. The cutting layer is disposed on a surface of the main body and is applicable in cutting the workpiece. The light emitting material is disposed inside the cutting layer or between the main body and the cutting layer. The light emitting material is suitable for emitting a light capable of curing the photocurable adhesive layer adjacent to a cutting path as the workpiece is cut by the cutting layer.
摘要:
Usually an analysis of fuel displacement accident is required before operating a reactor. In the present invention, fuel displacement accident is analyzed by linearly combining calculation results of single displacement layouts and a calculation result of a default placement layout. In this way, a number of displacement combinations to be analyzed can be reduced. And, thus, time for the analysis is saved and safety of the reactor core can be affirmed.
摘要:
A method for synthesizing exo-tetrahydrodicyclopentadiene (exo-THDCPD) and adamantane is provided, including isomerization of an endo-tetrahydrodicyclopentadiene (endo-THDCPD) as a reaction feed with an acidic ionic liquid of aluminum trichloride in a pseudo-fixed bed ionic liquid reactor. Reactants float as a droplet from bottom to top of the pseudo-fixed bed reactor, and finally are discharged from a side tube. A mole fraction of aluminum trichloride in the acidic ionic liquid of aluminum trichloride is from 0.5 to 0.9, a feeding rate of the reaction feed is 0.1-10 g/min, and a temperature for the isomerization is between 25-120° C.
摘要:
A method for producing adamantane includes isomerizing exo-tetrahydrodicyclopentadiene into adamantane in an acidic chloroaluminate ionic liquid composed of aluminum(III) trichloride and a quaternary ammonium halide having a quaternary ammonium cation selected from a group consisting of tetraalkylammonium, dialkylpyridinium, and trialkylimidazolium.
摘要:
A metal-air cell having an anode/electrolyte and a cathode includes a container having an upper interior surface and a lower interior surface for housing the anode/electrolyte and the cathode; a spring disposed on the upper interior surface; a cover electrically connected to the cathode, and having at least one recess; and at least one o-ring disposed on the lower interior surface facing the at least one recess. The spring is compressed when a force is applied so that the at least one o-ring and the at least one recess are separated, thereby forming an inlet to introduce air for electrochemical reaction. The spring is expanded when the force is removed so that the at least one o-ring is inserted within the at least one recess to obstruct the air.
摘要:
A miniature animated display that operates by driving a steel bar with a motor. The steel bar causes the animation motion by means of the swing base and the U-shaped pedestal installed on the hinged assembled end formed by the two ends of the elastic steel bar. The orientation of the U-shaped pedestal is adjusted according to the position of the inner surface of the sliding path so that the circular magnet thereon is affixed on the inner surface of the sliding path.