PSI - Issue 42

Ayse Cagla Balaban et al. / Procedia Structural Integrity 42 (2022) 292–298 Ayse Cagla Balaban et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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up for each type of material. Composite materials were cured at room temperature for four days and post-cured at 80 0 C for 8 hours.

Fig. 1. Carbon fibre clothes having a density of (a) 200 g/m 2 ; (b) 450 g/m 2 .

As the first round of the manufacturing process, 2x2 Twill 3K Carbon Fibre cloth having a density of 200 g/m 2 with EL2 Epoxy neat resin (Material 1) and 2×2 Twill 12K Carbon Fibre cloth having a density of 450g/m 2 with EL2 Epoxy neat resin (Material 3) were used to manufacture two different composite materials without nanomaterials. The neat resin used in this study comprised of epoxy resin (EL160 Epoxy neat resin with a density of 1.15 g/cm 3 ) and hardener (EL160 Epoxy Hardener with a density of 0.96 g/cm 3 ) for a resin-hardener ratio of 100:35 by weight. The CNT-modified resin was prepared from a master batch EPOCYL NC R128-06 with a density of 1.1 g/cm 3 was chosen for this study. The EPOCYL NC R128-06 is based on a liquid Bisphenol-A containing a high concentration of NC 7000 multi-wall CNTs and additive polymer. During the second round of the manufacturing process, Carbon Fibre Clothes 200g 2x2 Twill 3K Black Carbon Fibre cloth with EL2 Epoxy neat resin and EPOCYL 128-06 Carbon Nanotubes (Material 2) and then, 450g 2×2 Twill 12k Carbon Fibre cloth with EL2 Epoxy neat resin and EPOCYL 128-06 Carbon Nanotubes (Material 4) were used to manufacture two different composite materials with nanomaterials. The neat resin-Carbon Nanotubes ratio was 6:1 by weight. The component details of composite materials can be seen in Table 1.

Table 1. Composite Material Components Material Number

Carbon Woven 200g 2x2 Twill 3K Carbon Fibre Cloth

Epoxy

CNTs

Material 1

EL2 Epoxy neat resin

-

200g 2x2 Twill 3K Carbon Fibre Cloth

EL2 Epoxy neat resin

EPOCYL 128-06 Carbon Nanotubes

Material 2

Material 3

450g 2×2 Twill 12K Carbon Fibre Cloth

EL2 Epoxy neat resin

-

Material 4

450g 2×2 Twill 12K Carbon Fibre Cloth

EL2 Epoxy neat resin

EPOCYL 128-06 Carbon Nanotubes