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The effects of skydrol (a hydraulic fluid) on the curing of tetraglycidyl 4,4′‐diaminodiphenyl methane/diaminodiphenyl sulfone‐based resins
Author(s) -
Buggy Martin,
O'byrne Kilian
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19961212)62:11<1869::aid-app11>3.0.co;2-u
Subject(s) - thermogravimetric analysis , sulfone , curing (chemistry) , epoxy , differential scanning calorimetry , materials science , gravimetric analysis , methane , kinetics , rheology , polymer chemistry , composite material , chemistry , thermodynamics , organic chemistry , physics , quantum mechanics
The effects of Skydrol 500B‐4 on the cure characteristics of a diaminodiphenyl sulfone–crosslinked tetraglycidyl 4,4′‐diaminodiphenyl methane resin were investigated by the use of calorimetric, rheological, and gravimetric analyses. The chemical system studied was I.C.I's Fiberite 034 epoxy resin. The kinetics of cure were determined by the use of differential sacanning calorimetry. The results indicated that the hydraulic fluid did not alter the kinetic parameters ( E a , A, k, t 1/2 ) of the crosslinking reactions but diminished the overall heat of the reaction. Gelation and vitrification of the growing networks were observed by the use of dynamic mechanical thermal analysis. The results showed that Skydrol had a marked effect on reactions transpiring within the gel. Thermogravimetric analysis (TGA) was used to estimate the extent of Skydrol elimination during cure. TGA curves indicated that a significant degree of interaction occurred between the hydraulic fluid and the component(s) of the resin. © 1996 John Wiley & Sons, Inc.