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Ceramic Binder Burn-out Enhancement With Organic Peroxides

IP.com Disclosure Number: IPCOM000121012D
Original Publication Date: 1991-Jul-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 86K

Publishing Venue

IBM

Related People

Anderson Jr, HR: AUTHOR [+4]

Abstract

It is proposed to add organic peroxides to the organic binder system used in the manufacture of multilayer ceramics (MLC) for use in semiconductor devices. The organic additives function to enhance the decomposition of the organic binder system in the glass ceramic.

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Ceramic Binder Burn-out Enhancement With Organic Peroxides

      It is proposed to add organic peroxides to the organic
binder system used in the manufacture of multilayer ceramics (MLC)
for use in semiconductor devices.  The organic additives function to
enhance the decomposition of the organic binder system in the glass
ceramic.

      A conventional organic binder system for glass ceramic
substrates consists of polyvinyl butyral and a plasticizer in a
solvent solution of methanol and methyl isobutyl ketone.  After
initial pyrolysis in nitrogen, a steam burn-off cycle used in
conjunction with a copper catalyst is used to remove carbonaceous
residues resulting from incomplete binder decomposition.  This steam
cycle must be carefully controlled since a prolonged exposure in
steam will lead to a substrate of low density with degraded
mechanical and electrical properties.

      The general mode of polymer/organic decomposition may be
directed in one or more of the paths indicated in Fig. 1.
Modifications which can minimize formation of carbonaceous residues
tend to favor process es of gaseous generation and scission.  The
proposal suggests that incorporation of organic peroxides into the
binder system for use in MLC will permit binder decomposition to
occur at lower temperatures.  Cross linking and recombination of
intermediates is minimized by trapping them, in the presence of
O2/air, into molecules which will disintegrate more readily.

      Experimen...