摘要:
Membrane-electrode assemblies are provided which have polymer electrolyte membranes capable of maintaining an adequately wet condition even at high temperatures and have superior generating properties. The membrane-electrode assembly includes an ion exchange resin membrane, an anode catalyst layer including catalyst-supported carbon and an ion exchange resin, and a cathode catalyst layer including catalyst-supported carbon and an ion exchange resin, the anode catalyst layer including a binder component of which the ion exchange capacity is higher than that of a binder component in the cathode catalyst layer, and/or the anode catalyst layer including an ion exchange resin layer of which the water content is higher than that of anion exchange resin layer of the cathode catalyst layer.
摘要:
An object of the invention is to provide an electrode catalyst layer of a solid polymer electrolyte membrane-electrode assembly expressing excellent balance between water retention and drainage in an electrode, good power generation performance under any of low humidity and high humidity conditions, and also excellent durability of power generation.The electrode catalyst layer of the invention contains catalyst particles, an ion exchange resin and a water repellent agent, wherein said water repellent agent contains at least one kind selected from the group consisting of (A) a fluorine-containing copolymer having a structure unit derived from a polyfluoroalkyl-containing (meth)acrylate and (B) a fluorine-containing copolymer having a specific structure unit derived from a fluorine-containing olefin monomer and a specific structure unit derived from a vinyl ether monomer.
摘要:
The present invention provides an electrode catalyst layer comprising catalyst particles, an ion exchange resin and a water repellent agent. The water repellent agent contains (A) a fluorine-containing copolymer having a structure unit derived from a polyfluoroalkyl-containing (meth)acrylate and/or (B) a fluorine-containing copolymer having a structural unit represented by derived from a fluorine-containing olefin monomer and a structure unit represented derived from a vinyl ether monomer. The electrode catalyst layer contains 0.1 to 20% by weight of the water repellant agent. The electrode catalyst layer exhibits excellent balance between water retention and drainage in an electrode, good power generation performance under any of low humidity and high humidity conditions, and also excellent durability in power generation.
摘要:
Provided is a test apparatus that tests a device under test, including a vector expanding section that sequentially generates a plurality of test vectors; a vector selecting section that selects test vectors that cause a prescribed characteristic of the device under test, which is to be measured when test signals that are each based on one of the test vectors are supplied to the device under test, to fulfill a preset condition; and a judging section that judges pass/fail of the device under test based on measured values of the prescribed characteristic of the device under test supplied with the test signal based on the test vectors selected by the vector selecting section.
摘要:
A non-secure network gateway 11 and a secure network gateway 12 are realized by mutually independent computers, and are connected, by standard protocol communication portions 20 and 25, to a non-secure network 1 and a secure network 2 using a standard protocol the standardized specifications of which have been published. Data exchange between nonstandard protocol communication portions 22 and 23 of the sub-gateways 11 and 12 is performed using a nonstandard protocol the specifications of which have not been published, and data exchange between the nonstandard side and the standard side is performed only in the application layer. Protocol conversion portions 21 and 24 refers to relay permission settings tables 30 and 31 to confirm relay permission for communication data, and perform protocol conversion only when relaying is permitted. Even in the event that illicit communication data from one network has penetrated into a gateway, penetration of the communication data into the other network can be prevented.
摘要:
A melt-processable fluorine-containing polymer is melt kneaded with a kneader which has a residence time of at least 10 minutes, a usable volume ratio (usable space in a container/space in a container) of larger than 0.3, and a power factor K of less than 8000, the power factor K being represented by the formula: K=Pv/&mgr;/n2 in which Pv is a power requirement per unit volume (W/m3), &mgr; is a melt viscosity (Pa.s), and n is a rotation speed (rps), to effectively remove terminal groups and bonds in the backbones, which are unstable during melt kneading, from the melt-processable fluorine-containing polymer, and obtain a colorless fluorine-containing polymer.
摘要翻译:可熔融加工的含氟聚合物与停留时间为至少10分钟,可用体积比(容器中容器中的可用空间/容器中的空间)大于0.3的捏合机和功率因数 K小于8000,功率因数K由以下公式表示:K = Pv / mu / n <2>其中Pv是每单位体积的功率要求(W / m 3),μ是熔体粘度 (Pa.s),n为转速(rps),从熔融混炼时有效地除去在熔融混炼过程中不稳定的骨架中的端基和键合,得到无色的含氟聚合物, 含聚合物。
摘要:
To positively prevent a pressure medium sealed into an outer tube from leaking out from a clearance relative to an oil damper, there is provided a seal construction of a shock absorber 1 with leveling function wherein a seal mechanism 3 is disposed in an outer tube 2 to slidably insert a shock absorber 4 thereinto, a piston rod 5 extending from the shock absorber 4 is connected on the outer tube 2 side, a pressure medium sealed into the outer tube 2 is heated by a heating means 7 and leveling is carried out while controlling the support force exerting on the shock absorber 4, the seal construction being constituted that a free piston 15 is interposed opposite to the seal mechanism 3 between the outer tube 2 and the shock absorber 4, and the seal mechanism 3 and the free piston 15 compart and form a lubricating oil chamber 16 therebetween whereas the free piston 15 is always biased toward the lubricating oil chamber 16.
摘要:
To provide the stabilization method, in which unstable groups of melt-processable fluorine-containing polymer having unstable groups can be stabilized rapidly and effectively, and even if the obtained stabilized polymer is melt-molded, an obtained molded article is free from bubbles and cavity and no coloration arises. The method of stabilizing a fluorine-containing polymer by melt-kneading a melt-processable fluorine-containing polymer having unstable groups in a kneader having a stabilization treatment zone which satisfies the following conditions: (1) an oxygen-containing gas is present in the stabilization treatment zone, (2) water is present in the stabilization treatment zone, and (3) an absolute pressure in the stabilization treatment zone is adjusted to a pressure of 0.2 MPa or more or (a) an oxygen-containing gas is present in the stabilization treatment zone in a sufficient amount that the fluorine-containing polymer after the stabilization treatment has the number of carbon radical spins measured by an electron spin resonance absorption analysis at a temperature of 77 K of not more than 5×1013 spin/g, and (b) water is present in the stabilization treatment zone.
摘要:
Coagulated particles having a low water content are separated and recovered from an emulsified dispersion of fluorine-containing polymer particles. A solid-liquid separation method comprising: a step for adding a coagulant in an emulsified dispersion of fluorine-containing polymer particles to coagulate the fluorine-containing polymer particles with stirring and obtain a slurry of coagulated particles, a step for filtrating the slurry, and a step for pressing the obtained cake. It is preferable to continuously carry out the filtration step and pressing step with a filter press or a belt press. Also a washing step may be provided after the filtration step.
摘要:
A non-secure network gateway 11 and a secure network gateway 12 are realized by mutually independent computers, and are connected, by standard protocol communication portions 20 and 25, to a non-secure network 1 and a secure network 2 using a standard protocol the standardized specifications of which have been published. Data exchange between nonstandard protocol communication portions 22 and 23 of the sub-gateways 11 and 12 is performed using a nonstandard protocol the specifications of which have not been published, and data exchange between the nonstandard side and the standard side is performed only in the application layer. Protocol conversion portions 21 and 24 refers to relay permission settings tables 30 and 31 to confirm relay permission for communication data, and perform protocol conversion only when relaying is permitted. Even in the event that illicit communication data from one network has penetrated into a gateway, penetration of the communication data into the other network can be prevented.