US 4,469,984 A · Grid-like electrode for electronic components and process for making same

Abstract

A grid-like electrode for electronic components having its grid portion made of fibrous carbon threads bonded by means of the coke of an organic polymer. The grid-like electrode is made by impregnation of each fibrous carbon thread with a liquid organic polymer containing at least 20% by weight of carbon. Then a grid-like electrode is shaped from these threads and subjected to heating until the polymer is irreversibly cured, followed by heating of the polymer to cause pyrolysis thereof to a glossy carbon state.

Claims14

Dependent claims

A grid-like electrode for electronic components, said electrode having a grid portion comprising a plurality of elongated grid elements, each of said grid elements comprising:

a plurality of carbon fibers forming a fibrous carbon thread;
and
a carbonaceous material bonding said carbon fibers together, at least partially covering said fibers, and filling voids between said fibers,
said carbonaceous material comprising the coke of an organic polymer.

1 more element

A method of manufacturing a grid-like electrode for electronic components, comprising the steps of:

shaping a grid portion by winding on a mandrel an elongated material comprising a liquid organic polymer in which the amount of carbon is not less than 20% by weight, of said material having been prepared by:
passing fibrous carbon threads through said liquid organic polymer in such a fashion so as to impregnate the whole of each said thread, to coat the fibers of said thread with said organic polymer and to fill the voids between said fibers;
following said impregnation, passing each thread through a calibrated orifice to impart to it a required profile;
after said winding step, heating the material obtained to irreversibly solidify said organic polymer impregnating said fibrous carbon threads;
and
thereafter heating the shaped grid-like electrode to a temperature sufficient to cause pyrolysis of said polymer and formation of carbonaceous material in which said fibrous carbon threads are embedded in the coke of said organic polymer to secure the fibers of said threads to one another.

3 more elements

Dependencies are inferred from the claim text.

Grid-like electrode for electronic components and process for making same

Life of this patent

Grid-like electrode for electronic components and process for making same

Life of this patent

Abstract

Claims14