For the adhesive, it is best to use a medium epoxy resin (0.25-0.45) resin, such as 6101.634; for castables, it is best to use a high epoxy resin (>0.40) resin, such as 618.6101; Used generally low epoxy (<0.25) resin, such as 601.604.607.609 and so on.
The resin with too high epoxy value is strong, but brittle; the strength is good at high and low temperatures with moderate epoxy values; the lower the epoxy value, the lower the strength at high temperatures. Because the strength is related to the degree of cross-linking, the epoxy value is high after curing, and the degree of crosslinking is also high. The epoxy value is low and the degree of crosslinking is low after curing, so that the difference in strength is caused.
No need for high temperature resistance, no requirement for strength. It is hoped that the epoxy resin can be dried quickly and not easily lost. The resin with lower epoxy value can be selected. If it is desired to have good permeability and good strength, the epoxy value can be selected. High resin.