Synthesis and Characterization of Imide Containing Hybrid Epoxy Resin with Improved Mechanical and Thermal Properties

Table 2

Mechanical properties of epoxy resin-PPGE coatings.

Properties	Sample code
	BPA-PDA	BPA-TPDAP	BPA-5PPGE	BPA-10PPGE	BPA-15PPGE	BPA-20PPGE
Adhesion (%)	100	100	100	100	100	100
Impact resistance (kg/0.6 m)	0.40	0.40	0.50	0.55	0.50	0.50
Pencil hardness	2H	2H	2H	3H	4H	4H
T-bend (1/8 in.)	Pass	Pass	Pass	Pass	pass	fail
Scratch resistance (gm)	2000	2000	2500	2800	3500	3400
BDV (KV/mil)	2.95	4.26	5.09	5.43	5.91	6.58
Gloss@60	50	52	60	65	72	78
Tensile strength; MPa	25.12	29.45	30.62	44.80	46.69	51.77