Abstract:
A reinforcing film comprises a pressure sensitive adhesive layer laminated and fixed on a principal surface of a film substrate. The pressure sensitive adhesive layer is formed of a photocurable composition containing a photocurable agent and a base polymer having a crosslinked structure. A frictional force of the pressure sensitive adhesive layer measured with a frictional force microscope at a frequency of 5 Hz is preferably 2 to 5 times a frictional force at a frequency of 0.1 Hz. After photocuring of the pressure sensitive adhesive layer, a frictional force of a photocured pressure sensitive adhesive layer measured with the frictional force microscope at a frequency of 5 Hz is preferably not less than 5 times a frictional force measured at a frequency of 0.1 Hz.
Abstract:
The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.
Abstract:
The method for producing an anion exchange membrane according to the present invention includes the steps of irradiating a substrate composed of a hydrocarbon polymer with radiation and heat-treating the irradiated substrate so as to form a crosslinked structure between chains of the hydrocarbon polymer contained in the substrate; further irradiating the substrate, in which the crosslinked structure has been formed, with radiation and graft-polymerizing, onto the irradiated substrate, a monomer containing a site into which a functional group having anion conducting ability can be introduced and an unsaturated carbon-carbon bond so as to form a graft chain composed of the polymerized monomer; and introducing the functional group having anion conducting ability into the site of the formed graft chain.
Abstract:
Provided is a resin including a copolymer having a first structural unit and/or second structural unit and a structural unit having a polar group. R1, R2, R5, and R6 are each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R3 and R4 are each independently a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, A1 is a saturated carbon chain having 3 to 7 carbon atoms or a structure resulting from substitution of a heteroatom for a part of the carbon atoms of the saturated carbon chain, m and n are each independently 0 or 1, and X1 and X2 are each independently a halide ion, a hydroxide ion, or an anion of an organic or inorganic acid.
Abstract:
A reinforcing film comprises a pressure sensitive adhesive layer laminated and fixed on a principal surface of a film substrate. The pressure sensitive adhesive layer is formed of a photocurable composition containing a photocurable agent and a base polymer having a crosslinked structure. The gel fraction of the photocurable composition is preferably 60% or more. The shear storage elastic modulus at 25° C. of the pressure sensitive adhesive layer is preferably 1×104 to 1.2×105 Pa. The shear storage elastic modulus at 25° C. of the pressure sensitive adhesive layer after photocuring is preferably 1.5×105 to 2×106 Pa.
Abstract:
Provided is a thermally conductive sheet with greater optical transmission. The thermally conductive sheet provided by this invention has a resin layer that comprises a resin and a thermally conductive filler. The resin has a refractive index np and the thermally conductive filler has a refractive index nf, satisfying the next relational expression −0.04≤(np−nf)≤0.04. According to a preferable embodiment, the thermally conductive filler content is 50 parts by weight or more and 250 parts by weight or less to 100 parts by weight of the resin.
Abstract:
The membrane electrode assembly (MEA) of the present invention is a fuel cell MEA including an anion exchange membrane and a catalyst layer disposed on the surface of the membrane. In the MEA, the anion exchange membrane is an anion-conducting polymer electrolyte membrane in which a graft chain having anion conducting ability is graft-polymerized on a substrate formed of a skived film of ultra-high molecular weight polyolefin. This MEA has various superior properties for achieving an improvement in the power output of an anion exchange PEFC compared to conventional MEAs.
Abstract:
Provided is an ionomer resin including a copolymer containing the following first structural unit. L1 to L5 are each independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkanol group having 1 to 4 carbon atoms, or a specific functional group including an anion-exchange group, and an example of the functional group is —Z2-M1-Z1(R1)(R2)(R3). R1 to R3 are directly bonded to Z1 and are each independently an alkyl group having 1 to 8 carbon atoms or an alkanol group having 1 to 8 carbon atoms. M1 is a linear hydrocarbon chain having 3 to 8 carbon atoms, Z1 is a nitrogen atom or a phosphorus atom, and Z2 is a nitrogen atom bonded to one hydrogen atom, an oxygen atom, or a sulfur atom. L6 is a hydrogen atom, a methyl group, or an ethyl group.