(Meth)acrylic conductive material
A (meth)acrylic conductive material which contains a (meth)acrylic elastomer and a conductive agent, and which is characterized in that: the (meth)acrylic elastomer is obtained by polymerizing a monomer component containing a (meth)acrylic monomer represented by formula (I) (wherein R 1 represents a hydrogen atom or a methyl group; and R 2 represents an alkyl group having 1-10 carbon atoms, which may have a hydroxyl group or a halogen atom, or an alkoxyalkyl group having 2-12 carbon atoms, which may have a hydroxyl group); and the (meth)acrylic elastomer has a weight average molecular weight of 1,200,000 to 10,000,000 and a molecular weight distribution (weight average molecular weight/number average molecular weight) of 1-6.
1. A (meth)acrylic conductive material comprising a (meth)acrylic elastomer and a conductive agent, wherein the (meth)acrylic elastomer is prepared by polymerizing a monomer component comprising a (meth)acrylic monomer represented by formula (I):
wherein R 1 indicates a hydrogen atom or a methyl group, and R 2 indicates an alkyl group with 1 to 10 carbon atoms, the alkyl group optionally having a hydroxyl group or a halogen atom or an alkoxyalkyl group with 2 to 12 carbon atoms optionally having a hydroxyl group, and the (meth)acrylic elastomer is characterized by a weight average molecular weight of 2 million to 3 million, and a molecular weight distribution (weight average molecular weight/number average molecular weight) of 1 to 6, and
wherein the monomer component does not comprise an unsaturated nitrile monomer.
2. The (meth)acrylic conductive material of claim 1 , wherein the monomer component comprises a (meth)acrylic monomer represented by formula (I) wherein R 2 is an unsubstituted alkyl group.
3. The (meth)acrylic conductive material of claim 2 , wherein R 2 is an alkyl group with 1 to 4 carbon atoms.
4. The (meth)acrylic conductive material of claim 3 , wherein R 2 is ethyl.
5. The (meth)acrylic conductive material of claim 1 , wherein the monomer component further comprises an additional (meth)acrylic monomer represented by formula (I) in which R 2 is an alkyl group with 1 to 10 carbon atoms having a hydroxyl group, or further comprises an acrylic acid.
6. The (meth)acrylic conductive material of claim 5 , wherein the monomer component comprises 2-hydroxyethyl acrylate.
7. A conductive film formed from the (meth)acrylic conductive material of claim 1 .
8. An actuator prepared by using the conductive film of claim 7 .
9. A method of manufacturing a (meth)acrylic conductive material comprising a (meth)acrylic elastomer and a conductive agent, characterized by:
polymerizing a monomer component comprising a (meth)acrylic monomer represented by formula (I):
wherein R 1 indicates a hydrogen atom or a methyl group, and R 2 indicates an alkyl group with 1 to 10 carbon atoms, the alkyl group optionally having a hydroxyl group or a halogen atom or an alkoxyalkyl group with 2 to 12 carbon atoms optionally having a hydroxyl group to prepare a (meth)acrylic elastomer with a weight average molecular weight of 2 million to 3 million and a molecular weight distribution (weight average molecular weight/number average molecular weight) of 1 to 6, and wherein the monomer component does not comprise an unsaturated nitrile monomer; and
mixing the resulting (meth)acrylic elastomer and the conductive agent.
10. The method of claim 9 , wherein the polymerization is bulk polymerization.