Physico-chemical study of chalcone moiety containing epoxy resin and its fiber reinforced composites

Figures & data

Table 1. Details of fabrication jute/glass-ECH composites.

Composite	Wt. of fibers (g)		ECH (g)	TEA (ml)
	Jute fabric (g) (8 ply)	Glass fabric (g) (10 ply)
Jute-ECHT-20	121	–	84.7	23.53
Glass-ECHT-20	–	91.6	64.1	17.81

Figure 1 FTIR spectra of ECH and ECHT-20.

Figure 2 ¹HNMR(CDCl₃) spectrum of ECH.

Figure 3 DSC thermograms of ECH and ECHT-20 at 10 °C min⁻¹ heating rate in nitrogen atmosphere.

Figure 4 TGA thermograms of ECH and ECHT-20 at 10 °C min⁻¹ heating rate in nitrogen atmosphere.

Table 2. Mechanical and electrical properties of jute/glass-ECH composites.

Composite	Tensile strength (MPa)	Flextural strength (MPa)	Electric strength in air at 27 °C (kV/mm)	Volume resistivity (Ω cm)
JECHT-20	38.7	26	>8.9	1.1 × 10^12
	(n = 4)	(n = 3)	Flash over
GECHT-20	288.6	296.3	>21.7	2.1 × 10^13
	(n = 3)	(n = 4)	Flash over