摘要:
An electric furnace has a furnace wall, a cylindrical spiral member made of a wire of heat resistant material, a part of the cylindrical portion of which being embedded into the furnace wall and the remaining cylindrical portion of which being projected from an inner surface of the furnace wall, and a heating member inserted into the remaining cylindrical portion of the spiral member. The wire is wound along circles, ellipses, triangles, or quadrangles. The heating member has a circular, quadrangular, triangular or elliptical cross section.
摘要:
Middle point voltage of discharge is increased and at the same time cycle life improved in a nickel-metal hydride storage battery having a negative electrode utilizing a rare earth-nickel hydrogen-absorbing alloy containing Mg and the like and having a crystal structure other than a CaCu5 structure. A nickel-metal hydride storage battery contains a positive electrode (1), a negative electrode (2) including a hydrogen-absorbing alloy, and an alkaline electrolyte solution. The hydrogen-absorbing alloy contains at least a rare-earth element, magnesium, nickel, and aluminum, and has an intensity ratio IA/IB of 0.1 or greater as determined by X-ray diffraction analysis using Cu-Kα radiation as an X-ray source, where IA is the strongest peak intensity that appears in the range of 20=30° to 34°, and IB is the strongest peak intensity that appears in the range of 2θ=40° to 44°. The negative electrode contains a cobalt compound.
摘要:
A hydrogen-absorbing alloy is represented by the general formula Ln1-xMgxNiy-a-bAlaMb (where Ln is at least one element selected from the rare-earth elements, Zr, Ti, and Y, M is at least one element selected from the group consisting of V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P, B, and Zr, 0.05≦x≦0.35, 0.05≦a≦0.30, 0≦b≦0.5, and 2.5≦y
摘要:
A primary object of the present invention is to provide a multilayer heat-shrinkable styrene-based film that makes it possible, even when the film is transparent, to confirm that the film is correctly applied on a drink bottle and the like as a label. The present invention provides a heat-shrinkable styrene-based film having at least one layer containing a styrene-based resin containing a copolymer b1 of 98 to 40% by weight vinyl aromatic hydrocarbon and 2 to 60% by weight aliphatic unsaturated carboxylic acid ester, and/or a block copolymer b2 of 70 to 85% by weight vinyl aromatic hydrocarbon and 15 to 30% by weight conjugated diene hydrocarbon, and a fluorescent brightening agent in an amount of 100 to 2,000 weight ppm with respect to the total weight of the styrene-based resin. The present invention also provides a heat-shrinkable film having a three-layer structure containing front and back layers and a core layer, wherein the above-mentioned copolymer b1 and/or copolymer b2 forms the core layer.
摘要:
The present invention provides the following multilayer heat-shrinkable styrene-based film having an appropriate surface shape, together with excellent lubricity and blocking resistance, and resistance to ink skipping and like problems during the printing process:a multilayer heat-shrinkable styrene-based film having:layers (A) each containing 0.8 to 2.5 parts by weight of high impact polystyrene resin and 0.02 to 0.15 parts by weight of organic fine particles having a mean particle diameter of 0.5 to 5 μm per 100 parts by weight of a block copolymer of 75 to 90 wt % vinyl aromatic hydrocarbon and 10 to 25 wt % conjugated diene hydrocarbon; anda layer (B1) containing a block copolymer of 70 to 85 wt % vinyl aromatic hydrocarbon and 15 to 30 wt % conjugated diene hydrocarbon; ora layer (B2) containing a resin composition containing a copolymer of 98 to 40 wt % vinyl aromatic hydrocarbon and 2 to 60 wt % aliphatic unsaturated carboxylic acid ester.
摘要:
Thermal decomposition of a reactant, XY, proceeds on a negative catalytic electrode to form products, X and Y. The product Y is a cellular reaction material, which separates into ions, Y.sup.+, and electrons, e.sup.-, on the negative catalytic electrode. The ions Y.sup.+ move through a solid electrolyte, the electrons e.sup.- pass through an external resistor, and the product X formed on the negative catalytic electrode is circulated to the positive catalytic electrode, therefore reproducing the reactant XY. Since the cellular reaction material Y need not be released from the top of the catalytic electrode, the invention is adapted to convert heat energy into electric energy efficiently as compared with conventional methods. In one embodiment, reactant XY is 2-propanol, and products X and Y are acetone and hydrogen, respectively.
摘要:
A catalytic reaction apparatus for carrying out an exothermic catalytic reaction includes a first vessel for containing a first raw material for the exothermic catalytic reaction; a second vessel for containing a second raw material for the exothermic catalytic reaction; a reaction vessel for carrying out therein the exothermic catalytic reaction which is connected to the first and second vessels and receives the first and second raw materials for the exothermic catalytic reaction, the reaction vessel having first and second regions respectively containing first and second catalysts having respective activities different from each other so that the first and second regions have different catalytic performances from one another; a first heat exchanger associated with the reaction vessel and containing a heating medium flowing through the first heat exchanger so that the heating medium receives heat generated by the exothermic reaction in the reaction vessel; a third vessel connected to the first heat exchanger for containing said heating medium and sending the heating medium to the first heat exchangers; a second heat exchanger connected to the first heat exchanger for receiving the heating medium and transferring heat to a heat receptor arranged in the second heat exchanger; a fourth vessel connected to the reaction vessel for receiving reaction products produced in the reaction vessel; and a passage element connected to the fourth vessel for returning the heating medium from the second heat exchanger to the third vessel.
摘要:
Apparatus for heat transfer is disclosed. This apparatus is a closed container which is possessed of an input portion and an output portion for heat energy and is provided on the inside thereof with a wick extending throughout from the input portion to the output portion and disposed so that the resistance offered thereby to the flow of liquid gradually decreases from the input side to the output side. The heat medium which is vaporized on the input side is moved in the direction of the output side by virtue of the difference of pressure created inside the container. The heat medium which is deprived of heat and consequently liquefied on the output side is moved within the wick in the direction of the input side by virtue of capillary action coupled with the suction resulting from the vaporization of the heat medium in the input portion. As the temperature on the input side falls below that on the output side, the movement of the heat medium in the direction of the input side discontinues because of the stop of the vaporization of the heat medium on the input side and the directionality of the resistance offered by the wick to the flow of liquid, preventing otherwise possible reverse flow of the heat energy.
摘要:
The present invention provides the following multilayer heat-shrinkable styrene-based film having an appropriate surface shape, together with excellent lubricity and blocking resistance, and resistance to ink skipping and like problems during the printing process: a multilayer heat-shrinkable styrene-based film having: layers (A) each containing 0.8 to 2.5 parts by weight of high impact polystyrene resin and 0.02 to 0.15 parts by weight of organic fine particles having a mean particle diameter of 0.5 to 5 μm per 100 parts by weight of a block copolymer of 75 to 90 wt % vinyl aromatic hydrocarbon and 10 to 25 wt % conjugated diene hydrocarbon; and a layer (B1) containing a block copolymer of 70 to 85 wt % vinyl aromatic hydrocarbon and 15 to 30 wt % conjugated diene hydrocarbon; or a layer (B2) containing a resin composition containing a copolymer of 98 to 40 wt % vinyl aromatic hydrocarbon and 2 to 60 wt % aliphatic unsaturated carboxylic acid ester.