Accession Number : AD0646897

Title :   THERMOGRAVIMETRY OF PHENOL-FORMALDEHYDE POLYCONDENSATES.

Descriptive Note : Summary rept., Jan-May 65,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Farmer,R. W.

Report Date : JAN 1966

Pagination or Media Count : 5

Abstract : For constant heating rate thermogravimetry of phenol-formaldehyde polycondensates, it proved necessary to first reduce procedural bias of kinetics. The ensuing method, limited largely by instrument accuracy and practical sample form, gave empirical kinetic parameters via two complimentary curve-fitting techniques. Close correlation with past results gave confidence to the validity of the rate parameters. Several invalid cases, such as for air pyrolysis, improper geometry or inadequate cure, were also briefly probed. (Author)

Descriptors :   (*PHENOLIC PLASTICS, THERMOGRAVIMETRIC ANALYSIS), PYROLYSIS, POWDERS, MOLDINGS, POLYMERS, FILMS, PARTICLE SIZE, REACTION KINETICS

Subject Categories : Physical Chemistry
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE