Enhancement in Mode II Interlaminar Fracture Toughness at Cryogenic Temperature of Glass Fiber/Epoxy Composites through Matrix Modification by Carbon Nanotubes and n-Butyl Glycidyl Ether

Table 1

Interlaminar fracture toughness at RT and 77 K for the composites based on unmodified and modified epoxy resins.

Matrix	DGEBF (g)	DETD (g)	MWCNT (g)	BGE (g)	(kJ/m^2)
					RT	77 K
A	100	25.8			1.40 ± 0.03	3.25 ± 0.25
B	99.5	25.7	0.5		1.46 ± 0.08	3.63 ± 0.40
C	100	28.4		10	1.59 ± 0.04	3.99 ± 0.42
D	99.5	28.3	0.5	10	1.72 ± 0.07	4.27 ± 0.32