摘要:
An electric double layer capacitor having polarizable electrodes (106,107) including activated carbon fibers which are fully activated and have a large specific surface area, and a method for making the same. Each of the polarizable electrodes is composed of an activated carbon element having a surface fiber ratio (total geometric surface area of fabric/total geometric surface area of secondary fibers or strands) of 0.01 or more. Each activated carbon element is in the form of a woven fabric, nonwoven fabric, felt or the like including activated carbon fibers.
摘要:
A low melting enamel frit capable of firing at temperatures lower than the A 1 transformation temperature of steel, say 723°C, comprises 31 to 39 wt% of SiO 2 , 13 to 21 wt% of B 2 O 3 . 14 to 21 wt% of Na 2 O. 1 to 5 wt% of K 2 0, 5 to 20 wt% of ZnO, 2 to 10 wt% of F 2 and 2 to 9 wt% of at least one of Al 2 O 3 , Zr0 2 and TiO 2 , each intermediate oxide being present in an amount of at most 5 wt%, provided that the Si0 2 /B 2 0 3 ratio by weight is from 1.5 to 3.0:1;
the total amount of ZnO, Al 2 O 3 , Ti0 2 and Zr0 2 is from 17 to 25 wt%; the ZnO/(ZnO + Al 2 O 3 + TiO 2 and Zr0 2 ) ratio by weight is from 0.65 to 0.90:1; the total amount of Na 2 O + K 2 O is from 16 to 23 wt%; the (ZnO + Al 2 O 3 + Ti0 2 + Zr0 2 )/(Na 2 O + K 2 0) ratio by weight is from 0.85 to 1.2:1; and the (SiO 2 + B 2 O 3 + F 2 )/(Na 2 0 + K 2 0 + ZnO) ratio by weight is from 1.3 to 2.0:1.
摘要:
An antiviral composition comprising: a thiosulfate salt and at least one of thiosulfate complex salt of a metal and a porous particulate carrier; said metal being at least one selected from the group consisting of silver, copper and zinc; said salts being carried on said porous particulate carrier. It is applicable to a wide range of living environment such as medical instruments and appliances, hygienic implements as well as kitchen utensils, and also demonstrates an antibacterial activity in addition to the antiviral activity. The composition releases its salts slowly to the environment and the antiviral and antibacterial activities of said composition lasts for a long period of time. A method for preparing said composition as well as an antiviral disinfection method and a virucidal disinfection fluid using said composition are also disclosed.
摘要:
[Purpose] An object of the present invention is to provide a composition for use in a formation of transparent and electrically conductive film having a low electric resistance and a high transmittance and a method for making the film mentioned above. [Composition] A mixture of inorganic indium compound and organic tin compound is combined with organic compound capable of coordinating with either of indium and tin to form an organic solution. When the mixture is heated, the inorganic indium compound and the organic tin compound coordinating partially with the organic compound react with water of crystallization of inorganic indium compound. The organic tin compound is partially subjected to hydrolysis to form an intermediate complex compound including indium and tin. This suppresses the evaporation of tin and generates a uniform film having a high transmittance and a low electric resistance. An addition of polyhydric alcohol increases the viscosity of the solution and gives a high stability to a resultant film obtained by applying the composition to the substrate and firing.
摘要:
A heat generator comprising a quartz tube (2) containing an electric resistor (1) and a catalyst coating layer (3) comprising at least active alumina, silica and a platinum group metal, formed on the surface of the quartz tube (2) can heat a material to be heated and the catalyst coating layer (3) itself because of the catalyst coating layer (3) being provided on the surface of the quartz tube (2). The catalyst coating layer (3) surrounds the quartz tube (2) and thus efficiently absorbs heat from the electric resistor (1) by radiation and heat conductance, whereby the catalyst coating layer (3) can be heated to the activation temperature within a short time. Furthermore, the heat generator also heats air around the heat generator to much circulate the air as a convection air stream around the heat generator. When the convection air stream contact the catalyst in the catalyst coating layer (3) heated to higher than the activation temperature by heating of the heat generator, smelling components or noxious components in the air stream are oxidized and purified by the catalytic action before leaving the heat generator.
摘要:
A ceramics having improved thermal shock resistance is produced by a method comprising firing a mixture comprising at least one compound selected from the group consisting of sulfate, nitrate, carbonate, oxide, hydroxide, acetate and oxalate of an alkali metal and an alkaline earth metal, titanium oxide, rehydratable alumina, optionally silica and optionally a rare earth element compound at a temperature in the range of 1,000°C to 1,300°C.