摘要:
An object of the present invention is to provide a non-aqueous electrolyte secondary cell having excellent resistance to deterioration, excellent self-extinguishability or incombustibility, and excellent discharge properties at low temperatures, a deterioration inhibitor for a non-aqueous electrolyte secondary cell which can improve resistance to deterioration, and an additive for a non-aqueous electrolyte which can improve self-extinguishability or incombustibility.The non-aqueous electrolyte secondary cell has a positive electrode, a negative electrode, and, in a first aspect, a non-aqueous electrolyte containing at least 2% by volume and less than 20% by volume of a phosphazene derivative, and a supporting salt, and, in a second aspect, a non-aqueous electrolyte containing at least 20% by volume of the phosphazene derivative, and the supporting salt. The deterioration inhibitor for a non-aqueous electrolyte secondary cell and the additive for a non-aqueous electrolyte secondary cell are added to the non-aqueous electrolyte of the non-aqueous electrolyte secondary cell and contain at least the phosphazene derivative.
摘要:
An electrorheological fluid is constituted by using a dispersed phase of a carbonaceous powder having an oxygen content above 10% by weight but not more than 20% by weight and having an average particle diameter of 0.01-100 .mu.m, obtained by: heat-polymerizing a condensed polycyclic aromatic compound containing a main component of naphthalene by using HF/BF.sub.3 as a catalyst to obtain a 100% meso-phase pitch having a softening point within a range of 150.degree.-400.degree. C.; heat-treating and making the pitch infusible in an oxidizing atmosphere at a temperature not more than a fusing temperature of the pitch and not less than 50.degree. C. but not more than 400.degree. C. to allow the pitch to have an oxygen content of 12-25% by weight; and then heat-treating and carbonizing the pitch in an inert gas atmosphere at a temperature not less than 300.degree. C. but not more than 700.degree. C. It is thus possible to obtain an electrorheological fluid having low current consumption, a high electrorheological effect and excellent long-term durability, even when the carbonaceous powder having high oxidation resistance and a high oxygen content is used.
摘要:
The protection against black and white rust on zinciferous surfaces by a conventional chromating treatment is improved by drying into place on the zinciferous surface before chromating a pre-treatment composition that contains hexavalent chromium ion plus one or more salts of nickel and cobalt, in an amount to produce an add-on of 0.5 to 100 mg/m.sup.2 of metal.
摘要翻译:通过常规镀铬处理在镀锌表面上防止黑色和白色锈蚀的保护通过在含铬六价铬离子加上一种或多种镍和钴盐的预处理组合物铬化之前在锌表面上进行干燥而得到改善,其量为 以产生0.5至100mg / m 2的金属的附加物。
摘要:
A secondary battery comprising a positive electrode, a negative electrode, and an electrolyte is improved in discharge performance by forming the positive electrode from a composite electrode material including a conductive organic polymer and a dischargeable metal oxide and/or metal chalcogenide.
摘要:
A hydrophilic coating is formed on an aluminum surface by the application of an aqueous solution of an amphoteric acrylamide polymer which is dried in place. The polymer solution may contain a cross-linking agent and the dried coating may be subsequently treated to form a water-glass coating.
摘要:
A high-durable pneumatic radial tire is disclosed. In the tire of this type, steel cords each made from particular steel filaments are used in at least one of belt and carcass. This steel filament has a pearlite structure having an average value of interlamellar distance between cementites of 300-500 .ANG., and a tensile strength of not less than 220 kgf/mm.sup.2.
摘要:
A plurality of air relief holes 18 for removing air in a bag are formed in a slit shape at a portion where, when an opening portion of an envelope 10 is sealed by a seating portion 11a, the air relief holes are concealed by the sealing portion and which is an upper end portion of a second back face 14 of the envelope 10. In case that the envelope 10 is inserted between a pair of upper and lower pressure-contacting rollers from its bottom portion, when the envelope 10 passes through between the pair of upper and lower pressure-contacting rollers rotating in a manner sandwiched therebetween, air staying in a bag of the envelope 10 is exhausted from the air relief holes 18 to the outside, so that the envelope 10 is changed in one sheet shape. Thereby, forces acting on upper and lower faces of the envelope 10 from the pair of upper and lower rollers becomes approximately even, so that occurrence of wrinkles on the envelope 10 is suppressed. Thereby, the envelope 10 is moved straightly up to a printing position, and predetermined printing can be applied to a predetermined portion of the envelope at the predetermined position. Accordingly, predetermined printing can be applied to an envelope without depending on a printing machine or the like and without causing a wrinkle on the envelope and making printing inaccurate.
摘要:
A non-aqueous electrolyte electric double-layer capacitor in which there is no danger of being ignited, bursting or catching flame at the time of a short-circuit, has low internal resistance, superior properties at low temperatures, and is self-extinguishable or incombustible. In a first aspect, a non-aqueous electrolyte includes a non-aqueous electrolyte having a phosphazene derivative. In a second aspect, a potential window of the phosphazene derivative is a range having a lower limit of +0.5 or lower and an upper limit of +4.5 or higher, and a potential window of the organic solvent has a wider range than the potential window of the phosphazene derivative. In a third aspect, a conductivity of a quaternary ammonium salt solution (0.5 mol/l) is 2.0 mS/cm. In a fourth aspect, a permittivity thereof at a temperature of 25° C. is 15 or higher and a viscosity thereof is 20 mPa·s (20 cP) or lower.
摘要:
A non-aqueous electrolyte electric double-layer capacitor which has superior resistance to deterioration and superior properties at low temperatures while maintaining electrical characteristics such as sufficient electric conductivity and the like, and a non-aqueous electrolyte of the capacitor has low surface resistance. A first aspect of the non-aqueous electrolyte electric double-layer capacitor has a positive electrode, a negative electrode and a non-aqueous electrolyte which contains at least 2% by volume to less than 20% by volume of phosphazene derivative and a supporting electrolyte. A second aspect thereof has the positive electrode, the negative electrode and the non-aqueous electrolyte which contains at least 20% by volume of phosphazene derivative and the supporting electrolyte.
摘要:
A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges produces a protective layer on the surface of zinc coated steel treated with the composition that has an excellent alkali resistance, corrosion resistance, coatability, and welding tolerance.