ELASTIC CONDUCTIVE MATERIAL
An elastic conductive material includes a matrix and a conductor dispersed in the matrix. The matrix is formed by crosslinking a first polymer that is one or more selected from polymers of General Formulae (1) to (4) below and has a function of dispersing the conductor, and a second polymer crosslinkable with the first polymer. [In Formulae (1) to (4), X is a substituent crosslinkable with the second polymer; Y is a functional group having an affinity for the conductor; constitutional units A, B, and C each are one kind selected from acrylic acid, methacrylic acid, salts of acrylic acid and methacrylic acid, esters, polybutadiene, polyisoprene, urethane prepolymer, polyether, polyetheramine, polyamine, polyol, and polythiol; and l, m, and n each are an integer equal to or greater than one.]
1 . An elastic conductive material including: a matrix; and a conductor dispersed in the matrix, the elastic conductive material characterized in that
the matrix is formed by crosslinking a first polymer that is one or more selected from polymers of General Formulae (1) to (4) below and has a function of dispersing the conductor, and a second polymer crosslinkable with the first polymer,
[in Formulae (1) to (4), X is a substituent crosslinkable with the second polymer; Y is a functional group having an affinity for the conductor; constitutional units A, B, and C each are one kind selected from acrylic acid, methacrylic acid, salts of acrylic acid and methacrylic acid, esters, polybutadiene, polyisoprene, urethane prepolymer, polyether, polyetheramine, polyamine, polyol, and polythiol; and l, m, and n each are an integer equal to or greater than one].
2 . The elastic conductive material according to claim 1 , wherein in the polymers as the first polymer, the substituent Y is an amino group or a quaternary ammonium salt.
3 . The elastic conductive material according to claim 1 , wherein in the polymers as the first polymer, the substituent X is one or more selected from a hydroxyl group, an amino group, a thiol group, a carboxyl group, and a silanol group.
4 . The elastic conductive material according to claim 1 , wherein the second polymer includes a rubber polymer having a glass transition temperature (Tg) of 0° C. or lower.
5 . The elastic conductive material according to claim 4 , wherein the rubber polymer is one or more selected from an acrylic rubber polymer, a hydrin rubber polymer, and a urethane rubber polymer.
6 . The elastic conductive material according to claim 1 , wherein a blended amount of the first polymer is 5% by mass or more and 90% by mass or less when the elastic conductive material as a whole is 100% by mass.
7 . The elastic conductive material according to claim 1 , wherein the conductor is one or more selected from carbon black, carbon nanotubes, graphite.
8 . An electrode formed of the elastic conductive material as claimed in claim 1 .
9 . A wire formed of the elastic conductive material as claimed in claim 1 .
10 . An electromagnetic shield formed of the elastic conductive material as claimed in claim 1 .
11 . A transducer comprising:
a dielectric film made of an elastomer or resin;
a plurality of electrodes arranged with the dielectric film interposed therebetween; and
a wire connected to each of the plurality of electrodes, wherein at least one of the electrode and the wire is formed of the elastic conductive material as claimed in claim 1 .
12 . A flexible wiring board comprising:
an elastic substrate; and
a wire arranged on a surface of the elastic substrate, wherein at least a part of the wire is formed of the elastic conductive material as claimed in claim 1 .