Namics Corporation

Yoshitaka Kamata

Pawel Czubarow

Toshiyuki Sato

Takayuki Fujita

Daisuke Hashimoto

A porous carbon has an I/Iof 2.0 or more in a Raman spectrum measured by Raman spectroscopy with respect to the porous carbon wherein the Iis an accumulated intensity of a peak for G band around 1590 cm, and the Iis an accumulated intensity of a peak for D band around 1350 cm. The porous carbon has pores having a size of less than 1 μm. The porous carbon can be contained in a resin composition for producing a varistor element.

Porous carbon and resin composition

Provided are a varistor forming paste, a cured product thereof, and a varistor, that can increase the degree of freedom in designing an electronic device, and can exhibit appropriate varistor characteristics. The varistor forming paste contains an epoxy resin (A), a curing agent (B), and a carbon aerogel (C).

Varistor forming paste, cured product thereof, and varistor

Provided are a resin composition for forming a varistor and a varistor capable of increasing freedom in the design of substrates, ICs, or electronics. The resin composition for forming a varistor includes (A) an epoxy resin, (B) a curing agent, (C) carbon nanotubes, and (D) a dispersant. The (C) carbon nanotubes may be single-walled carbon nanotubes, multi-walled carbon nanotubes, or a combination thereof. The (D) dispersant includes a polyalkyl oxide surfactant. The polyalkyl oxide surfactant has a polyalkyl ether skeleton in the molecule.

Resin composition for forming varistor and varistor

A resin composition which includes (A) an epoxy resin, (B) a curing agent, and (C) carbon nanotubes, wherein the carbon nanotubes contain therein semiconducting single-walled carbon nanotubes in an amount of 70% by weight or more. A cured product of a paste made from the resin composition can be used to form a varistor element.

Growing community of inventors

Niigata, Japan

Yoshitaka Kamata