Investigation of Heat Stepping Process for Epoxy-Amine Binders

Table 1

The effect of hardening conditions on the binder properties based on ED-20.

Indicator	Hardening mode
	24 hours	240 hours	720 hours	24 hours at 293 K and 2 hours at 393 K
Hardening degree, X (%)	62	72	73	88
Wetting angle, α (deg.)	31	36	44	53
Elasticity modulus under bending, Е (MPa)	1540	1680	1710	1810
Internal, σвн (MPa)	0.5	0.9	1.2	1.6
Destructive bending stress, σр (MPa)	28.2	39.1	42.3	46.1