Sumitomo Riko Company Limited

Toyota Jidosha Kabushiki Kaisha

Shinji Kumagai

Shigeaki Takamatsu

Naoki Katayama

Yutaro Taguchi

Shota Hayashi

Yota Kokubo

Yuji Shintaku

A thermal insulation material for a battery pack includes: a thermal insulation layer; and a first base material and a second base material that are arranged with the thermal insulation layer interposed therebetween. The thermal insulation layer contains a porous structure in which a plurality of particles is connected to form a skeleton, reinforcing fibers, and metal oxide nanoparticles serving as a binder, the porous structure having pores inside and having hydrophobic sites at least on a surface of the porous structure out of the surface and inside of the porous structure, and a percentage mass loss of the thermal insulation layer in thermogravimetric analysis in which the thermal insulation layer is held at 500° C. for 30 minutes is 10% or less.

Thermal insulation material for battery pack and battery pack

A heat insulating material () includes a heat insulating layer () which has a porous structural body, a reinforcing fiber, and nanoparticles of a metal oxide used as a binder, wherein the porous structural body has a skeleton formed by connecting a plurality of particles, has pores inside, and has a hydrophobic portion on at least one surface between a surface and an inside of the porous structural body. The heat insulating layer () has a mass loss rate of 10% or less in thermogravimetric analysis held at 500&#xb0; C. for 30 minutes.

Heat insulating material and manufacturing method thereof

A dielectric film includes an elastomer, and metallic oxide particles having a particle diameter of 100 nm or less that are chemically bonded to the elastomer and are dispersed in the elastomer in a state of primary particles. A method for manufacturing the dielectric film includes: a chelating process of adding a chelating agent to an organometallic compound to produce a chelate compound of the organometallic compound; a sol manufacturing process of adding an organic solvent and water to the chelate compound to obtain a sol of metallic oxide particles produced by the hydrolytic reaction of the organometallic compound; a mixed solution preparing process of mixing the sol of the metallic oxide particles and a polymer solution containing a rubber polymer having functional groups that optionally react with hydroxy groups; and a film forming process of applying the mixed solution onto a substrate, and curing the resultant coating film.

Dielectric film, method for manufacturing the same, and transducer including the same

A dielectric material for a transducer is manufactured from a composition that includes metal oxide particles having hydroxy groups, a rubber polymer having a functional group capable of reacting with an epoxy group, a bisphenol type epoxy resin, both ends of which have an epoxy group, and a cross-linking agent. In the dielectric material for a transducer, the metal oxide particles are bound to the rubber polymer via the bisphenol type epoxy resin. A transducer includes a dielectric layer made of the dielectric material for a transducer and a plurality of electrodes arranged with the dielectric layer interposed therebetween.

Dielectric material for transducer, method for manufacturing the same, and transducer including the same

A transducer includes a high-resistance layer that includes an elastomer and has a volume resistivity of 10&#x3a9;&#xb7;cm or more, a pair of electrodes that are arranged on both a front side and a back side of the high-resistance layer and include a binder and a conductive material, and a medium-resistance layer that is interposed between the electrode and the high-resistance layer on at least one of the front side and the back side of the high-resistance layer, includes an elastomer, and has a volume resistivity that is smaller than the volume resistivity of the high-resistance layer by two or more digits. In the transducer, the medium-resistance layer is interposed between at least one electrode and the high-resistance layer to take advantage of the resistance to dielectric breakdown originally possessed by the high-resistance layer, thereby obtaining a larger force by applying a higher voltage.

Transducer including an elastomer

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.

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Aichi-ken, Japan

Shinji Kumagai