摘要:
An anode material consisting of non-graphitizable carbon material obtained by baking a carbon precursor is disclosed. In this non-graphitizable carbon material, a ratio by weight of carbon Ps in a stacking structure as determined from diffraction peak originating in a (002) crystal lattice plane and X-ray diffraction spectrum components on the lower angle side with respect to the diffraction peak originating in the (002) crystal lattice plane of X-ray diffraction spectrum is smaller than 0.59, or the stacking index SI thereof is smaller than 0.76. Moreover, an average number of carbon layers n.sub.ave in a stacking structure is smaller than 2.46. Alternatively, when the baking temperature is T.degree.C. and the half width at half maximum of the peak appearing in the vicinity of 1340 cm.sup.-1 in the Raman spectrum is HW, the condition expressed below is satisfied. HW>138-0.06.multidot.T This non-graphitizable carbon material is manufactured by allowing the carbon precursor which becomes non-graphitizable carbon by baking to undergo heat treatment at a temperature 600.degree. C. or more under an inactive gas atmosphere of flow rate of 0.1 ml/sec. or more per 1 g of carbon precursor, or to undergo heat treatment at a temperature 600.degree. C. or more under an atmosphere of pressure less than 50 kPa. At this time, carbon precursor is mounted in a layered form so that the area in contact with the atmosphere is 10 cm.sup.2 or more per 1 Kg.
摘要:
A molding material having high dynamic strength which contains bacterial cellulose having ribbon-shaped microfibrils.Such material is advantageously used as a reinforcing material for composite plastics having high strength, as high quality paper or as acoustic diaphragms for percussion instruments.
摘要:
Hydrogen sulfide-containing waste gases whose complete treatment is indispensable from the viewpoint of environmental pollution problem, are purified in two steps consisting of a first step in which the gases are absorbed in an aqueous solution of sodium hydroxide or/and sodium sulfide, and a second step in which sulfuric acid and sulfur dioxide gas are simultaneously introduced into the resulting solution after absorption to deposit sulfur. Further, for recovery of the resulting sulfur, a particular apparatus is provided.
摘要:
An anode material consisting of non-graphitizable carbon material obtained by baking carbon precursor is disclosed. In this non-graphitizable carbon material, ratio by weight of carbon Ps in stacking structure determined from diffraction peak originating in (002) crystal lattice plane and X-ray diffraction spectrum components on the lower angle side with respect to the diffraction peak originating in the (002) crystal lattice plane of X-ray diffraction spectrum is smaller than 0.59, or stacking index SI thereof is smaller than 0.76. Moreover, average number of carbon layers n.sub.ave in stacking structure is smaller than 2.46. Alternatively, when baking temperature is T.degree. C. and half width at half maximum of peak appearing in the vicinity of 1340 cm.sup.-1 in Raman spectrum is HW, the condition expressed below is satisfied.HW>138-0.06.multidot.TThis non-graphitizable carbon material is manufactured by allowing carbon precursor which becomes non-graphitizable carbon by baking to undergo heat treatment at temperature 600.degree. C. or more under inactive gas atmosphere of flow rate of 0.1 ml/sec. or more per carbon precursor 1 g, or to undergo heat treatment at temperature 600.degree. C. or more under the atmosphere of pressure less than 50 kPa. At this time, carbon precursor is mounted in a layered form so that the area in contact with the atmosphere is 10 cm.sup.2 or more per 1 Kg.
摘要:
A hoist and traction machine having a free rotation control device/apparatus for selectively controlling the mechanical brake to be inoperative and for maintaining the inoperative mode of the mechanical brake, so as to control the free rotation of the load sheave. The free rotation control device is designed such that improved free rotation control operation can be provided, and the range of the pulling force for the chain can be enlarged in the controlled free rotation of the load sheave; thus, allowing the chain to be pulled quicker, while requiring little operating skill. Further, free rotation operation is not provided when the load sheave (and thus the driving shaft) is subjected to a large load acting in the direction of hoisting down the load, thus achieving highly improved safety.
摘要:
An anode material composed mainly of a difficultly graphatizable carbon or coke (easily graphatizable coke) consisting essentially of carbon, phosphorus and oxygen, and containing phosphorus in an amount of 0.2 to 9.0 wt %, is disclosed. The anode material exhibits a peak in a .sup.31 P solid NMR spectrum in a range of .+-.100 ppm based on orthophosphoric acid, and a peak in a 2p orbital spectrum of a phosphorus atom in XPS of not more than 135 eV. The anode material is prepared by adding phosphoric acid or phosphorus oxides to an organic material or a carbonic material. A non-aqueous liquid electrolyte cell is produced from the above anode material, an Li-containing cathode and a liquid electrolyte.
摘要:
A hoist/traction apparatus including a gear cover for covering a gear reduction mechanism. The gear cover includes swollen portions protruding outwardly and having blind holding portions open inwardly so as to receive axial ends of intermediate shafts and a driving shaft of the hoist/traction apparatus. In addition, the gear cover is provided with a reinforcing rib to protect the swollen portions.
摘要:
This invention provides an acoustic material having high elastic modulus and large internal loss by subjecting a high-modulus stretched polyethylene containing paraffin wax to plasma treatment. When the acoustic material of the present invention is used for a diaphragm of a speaker, for example, it is possible to suppress the fluctuation of frequency characteristics resulting from split vibration, decrease harmonic distortion and improve transient characteristics.
摘要:
A method for producing an information card by printing an electroconductive pattern and a first electrode surface of a battery on a first cover sheet, applying a battery activator onto the first electrode surface, resting an electrolyte-impregnated separator onto the first electrode surface, fixing an IC chip to the electroconductive pattern in a predetermined position, printing a second electrode surface of the battery on a second cover sheet, applying a battery activator onto the second electrode surface, and lapping and sticking the first and second cover sheets together and cutting them into a predetermined size.