Resin composite material

Patent metadata

Field	Value
Publication number	US-2016247594-A1
Application number	US-201414913822-A
Country	US
Kind code	A1
Filing date	Aug 22, 2014
Priority date	Aug 23, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

There is provided a resin composite material in which problems, such as a decrease in mechanical strength of a resin and a decrease in processabilities due to an increase in resin viscosity, are overcome by using a small amount of CNTs, and in which, in spite of using a small amount of CNTs, the functions derived from the formation of a composite of CNTs and other effective functions can be exhibited.

First claim

1 . A resin composite material comprising: a resin used as a base material; and a plurality of CNTs, the plurality of CNTs forming a composite with the resin, wherein
a concentration of the CNTs relative to the base material is 2.0% by volume or less; and when volume resistivity of a molded test piece of the resin composite material is measured at a plurality of predetermined points on a surface of the test piece by a four-point probe method, a ratio of a maximum value R 1 of the volume resistivity to a minimum value R 2 thereof is 4.0 or less.

2 . The resin composite material according to claim 1 , wherein the CNTs are synthesized by CNT growth on substrate by thermal CVD method.

3 . The resin composite material according to claim 2 , wherein the CNTs are CNTs formed by nano-dispersion treatment of CNTs having a good linearity of shape and a fiber length of 100 nm or more.

4 . The resin composite material according to claim 2 , wherein the CNTs are multi-walled CNTs in which the inner diameter of the innermost tube is 3 nm or more and 8 nm or less, and the outer diameter of the outermost tube is 5 nm or more and 35 nm or less.

5 . The resin composite material according to claim 1 , wherein the resin is a thermoplastic resin.

6 . The resin composite material according to claim 1 , wherein the CNTs are ground and classified and then kneaded with the resin.

Assignees

• Nitta Corp

Inventors

• Nakai Katsuyuki
• Komukai Takuji

Classifications

• C08K3/04

  Carbon · CPC title

• H01B1/24 Primary

  the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title

• C08K3/041 Primary

  Carbon nanotubes · CPC title

• C08K2201/003

  Additives being defined by their diameter · CPC title

• C08K2201/004

  Additives being defined by their length · CPC title