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The polymerization and long‐term stability of room temperature curing epoxy resins
Author(s) -
Steele Doris V.
Publication year - 1963
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760030113
Subject(s) - materials science , polymerization , curing (chemistry) , epoxy , polymer , composite material , electrical resistivity and conductivity , polymer chemistry , degree of polymerization , electrical engineering , engineering
The effect of resin mass on the degree of crosslinking during the initial polymerization of three typical polymer compounds was determined by electrical resistivity techniques. Activation energies for the electrical conduction process (E c ) were calculated and used as an index of the extent of additional crosslinking occurring during sixteen months of storage. Test data show continued polymerization at slow rates for periods of time ranging from three days to over sixteen months before the polymerization process is completed. The final degree of crosslinking is shown to be dependent on the extent of initial crosslinking.