Method for producing honeycomb core by the addition of graphite

Details Method for producing honeycomb core by the addition of graphite Method for producing honeycomb core by the addition of graphite

1996-08-26

1998-06-30

Johnstone, Adrienne C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156280, 156291, 428116, B32B 312, B32B 3116, B32B 3124, B32B 3126

Patent

active

057728267

ABSTRACT:
The present invention provides a method for producing a honeycomb core having excellent thermal stability, mechanical properties and a rapid setting speed, which comprises applying adhesives onto ribbon type of carbon fiber fabrics at regular intervals so as to form the specific size of a cell, attaching the ribbons in a layered form and heat setting and expanding the attached portion to form a basic honeycomb core and then impregnating and setting the basic honeycomb core in phenol resin containing 0.5 to 4% by weight of graphite powder having 0.3 to 2 .mu.m of average diameter. This method is characterized by the fact that fiber breakage due to thermal decomposition gas occurring in the setting treatment is prevented and the dispersing effect of surface of graphite is maximized, and thereby the thermal and mechanical properties of the honeycomb core can be optimized.

REFERENCES:
patent: 5288537 (1994-02-01), Corden

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