Abstract
The ratios of residual deformation of epoxy resins which the silica is filled and the silica is filled with graphite are measured by changing the glass transition temperature and are compared with the ones of phenolic resins with particulate fillers of same kinds and quantities. The results obtained are shown as follows :
(1) The ratios of residual deformation of particulate filled epoxy resins decrease with an increase in the glass transition temperature.
(2) The ratios of epoxy resins which the silica is filled with graphite are lower than the one of epoxy resins which have a same glass transition temperature and the silica is filled, but the ratios of particulate filled phenolic resins show a different tendency to the ones of the particulate filled epoxy resins by the kind of filler.
(3) The secular change of particulate filled epoxy and phenolic resins can be estimated by the master curves of the residual deformation. It is found that after 20 years a ratio of residual deformation of epoxy resin which the glass transition temperature is higher and the silica is filled with graphite is lower than the one of phenolic resin which the silica is filled.
4) The tendency described above for the ratios of residual deformation can be found by the activation energy and crosslinking density instead of the glass transition temperature.
