Elastomer material containing immobilized ionic components and method for manufacturing the same
An elastomer material containing immobilized ionic components includes an elastomer, ion-immobilized particles in which first ionic components are immobilized to metallic oxide particles, and second ionic components having electric charges opposite to electric charges of the first ionic components, wherein the ion-immobilized particles are chemically bonded to the elastomer. In the elastomer material, the first ionic components are immobilized to the elastomer through the metallic oxide particles. Therefore, the first ionic components do not easily migrate even with the passage of time or in use. Thus, the elastomer material is less susceptible to temporal changes in properties. The elastomer material is preferably used for the component of a transducer and a conductive roll.
1. An elastomer material containing immobilized ionic components, characterized by comprising:
an elastomer;
ion-immobilized particles in which first ionic components are immobilized to metallic oxide particles having a median diameter of 5 nm or more and 100 nm or less; and
second ionic components having electric charges opposite to electric charges of the first ionic components, wherein
the ion-immobilized particles are chemically bonded to the elastomer.
2. The elastomer material containing immobilized ionic components according to claim 1 , wherein the ion-immobilized particles are synthesized by causing a reactive ionic liquid containing the first ionic components before immobilization and the second ionic components to react with the metallic oxide particles obtained by hydrolytic reaction of an organometallic compound.
3. The elastomer material containing immobilized ionic components according to claim 2 , wherein the first ionic components contained in the reactive ionic liquid include an alkoxysilyl group, and the first ionic components are immobilized by reaction between the alkoxysilyl group and a hydroxy group of the metallic oxide particles.
4. The elastomer material containing immobilized ionic components according to claim 1 , wherein the ion-immobilized particles include a hydroxy group, and the elastomer includes a functional group that optionally reacts with the hydroxy group.
5. The elastomer material containing immobilized ionic components according to claim 1 , wherein the metallic oxide particles contain at least one element of titanium and zirconium.
6. The elastomer material containing immobilized ionic components according to claim 1 , wherein the content of the ion-immobilized particles is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the elastomer.
7. A method for manufacturing an elastomer material containing immobilized ionic components, characterized by comprising:
a chelating process of adding a chelating agent to an organometallic compound to produce a chelate compound of the organometallic compound;
an ion immobilizing process of adding a reactive ionic liquid, an organic solvent, and water to the chelate compound of the organometallic compound, immobilizing first ionic components in the reactive ionic liquid to metallic oxide particles produced by hydrolytic reaction of the organometallic compound to produce ion-immobilized particles, and obtaining a sol containing the ion-immobilized particles and second ionic components in the reactive ionic liquid; and
a curing process of mixing the sol and a polymer solution containing a rubber polymer having a functional group that optionally reacts with a hydroxy group to prepare a mixed solution and applying the mixed solution onto a substrate to be cured.