摘要:
An electrothermal color-varying instrument for inducing color change in a color-varying layer includes a heat generating element composed of a sintered barium titanate thermistor in face-to face contact with a heat transmitting member having a heating end portion for transmitting heat to the thermal color-varying layer. The thermistor has:(i) a positive temperature coefficient on the electrical resistance within a temperature range from 25.degree. C. to 70.degree. C.;(ii) a volume resistivity at 25.degree. C. (.rho..sub.25) within a range of 9.8.times.10.sup.-3 to 2.97.times.10.sup.5 .OMEGA..multidot.cm; and(iii) a ratio (.rho..sub.70 /.rho..sub.25) of the volume resistivity at 70.degree. C. to that at 25.degree. C. within a range of 5.ltoreq.(.rho..sub.70 /.rho..sub.25).ltoreq.400.The electrothermal heat generating element generates heat under the application of a voltage in the range of 0.8 to 40 volts and maintains a saturated heating temperature within a range of 30 to 100 degrees C.
摘要:
There is disclosed an electrothermal color-varying device inducing color change in a thermally color-varying layer by heat generation in an electrothermal heat-generating member, in which the heat-generating member is composed of a non-metallic member having a positive temperature coefficient on the electric resistance at least in a temperature range 25.degree. C. to 65.degree. C. and a particular volume resistivity, is adapted to generate heat by the application of a low voltage and is capable of self-control of the saturated heating temperature at an arbitrary temperature within a range of 25.degree. C. to 65.degree. C., whereby improved safety is achieved without the danger of overheating or current leakage. Also there are disclosed toys utilizing such color-varying device.
摘要:
A textile printing method that includes printing to a textile with a material including a dye expressed by the following general formula 1. In general formula 1, R1 to R16 is H, CH3, OH, NHC2H5, COOH, SO3H, SO3Na, NO2, or NH2.
摘要:
This invention provides an organic-inorganic hybrid material, which can exhibit high proton conductivity in a wide temperature range of a low temperature to a high temperature, a proton conductive material, which has a small particle diameter, that is, has a particle diameter capable of reaching pores of primary particles of carbon powder or the like, and has controlled particle diameters, a catalyst layer containing these materials for a fuel cell and an electrolyte film containing these materials for a fuel cell, and a fuel cell. The proton conductive hybrid material comprises proton conductive inorganic nanoparticles and a proton conductive polymer, wherein the Stokes particle diameter of the proton conductive hybrid material by dynamic light scattering is not more than 20 nm.
摘要:
A curable liquid resin which can give a coating composition capable of forming a film, the curable liquid resin being a copolymer obtained from(A) a monomer of the formula (1) or (2),CH.sub.2 .dbd.C(R.sup.1)COO--R.sup.2 (1)CH.sub.2 .dbd.C(R.sup.3)COO(C.sub.n H.sub.2n O).sub.m--R.sup.4(2)and(B) at least one monomer selected from the group consisting of(B1) a monomer prepared by reacting an ethylenically unsaturated epoxide (a) with a fatty acid (b) of the formula (3)R.sup.5 COOH (3)(B2) a monomer of the formula (4),CH.sub.2 .dbd.C(R.sup.6)CONR.sup.7 R.sup.8 (4)and(B3) a monomer whose molecule has at least two ethylenically unsaturated double bonds.
摘要:
Provided is a liquid material for forming a three-dimensional object used for forming a three-dimensional object made of a powder material for forming a three-dimensional object containing an organic material and a base material, wherein the liquid material contains a cross-linking agent cross-linkable with the organic material and a water-soluble resin having a weight average molecular weight of greater than or equal to 50,000.
摘要:
Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.
摘要:
This invention provides an organic-inorganic hybrid material, which can exhibit high proton conductivity in a wide temperature range of a low temperature to a high temperature, a proton conductive material, which has a small particle diameter, that is, has a particle diameter capable of reaching pores of primary particles of carbon powder or the like, and has controlled particle diameters, a catalyst layer containing these materials for a fuel cell and an electrolyte film containing these materials for a fuel cell, and a fuel cell. The proton conductive hybrid material comprises proton conductive inorganic nanoparticles and a proton conductive polymer, wherein the Stokes particle diameter of the proton conductive hybrid material by dynamic light scattering is not more than 20 nm.
摘要:
A conventional direct methanol solid polymer fuel cell comprises a solid polymer electrolyte as an electrolyte. This type of cell involves some problems; methanol permeates the membrane; the electromotive force lowers because of direct oxidation; and the membrane melts at about 130° C. when the temperature is increased to enhance the catalyst activity. According to the invention, an electrolyte membrane made of a porous substrate (1) that does not swell substantially with methanol and water and has pores (2) filled with a polymer (3) having proton conductivity is produced and used to suppress the permeation of methanol as much as possible, providing an electrolyte membrane for fuel cells endurable in a high-temperature environment, a fuel cell comprising such a membrane, a method of manufacturing such a fuel cell, and a method of manufacturing an electrolyte membrane comprising irradiation a porous substrate having swell-resistance against organic solvent and water with energy and contacting the substrate with a monomer to cause polymerization.
摘要:
The present invention provides an electrolyte membrane capable of inhibiting permeation of water, methanol or other electrolyte solutions, permeation of hydrogen and oxygen gas, and swelling caused by electrolyte solution, and having superior mechanical strength, a production process thereof and a membrane-electrode assembly and fuel cell using that electrolyte membrane. The electrolyte membrane has a porous base material having a plurality of pores, and a proton-conducting polymer composition retained in said pores, wherein the proton-conducting polymer composition contains an aromatic hydrocarbon resin having protonic acid groups, free water contained in the electrolyte membrane at 25° C. is present at 0.5 molecules or less per each of the protonic acid groups, bound water contained in the electrolyte membrane at 25° C. is present at 1 molecule or less for each of the protonic acid groups, proton conductivity of the electrolyte membrane in water at 25° C. is 0.001 S/cm or more, and methanol permeability of the electrolyte membrane in 30% by weight methanol at 25° C. is 50 (kg·μm/m2·h) or less.