Table 5
Avg. contact angle and surface energy classification
Avg. Contact angle
θ
°
Surface energy (nM/m)
Natural GFRP surface
107.915
8.727
Primer coated GFRP
70.13
25.206
KTL coated steel
79.615
25.352
Avg. Contact angle
θ
°
Surface energy (nM/m)
Natural GFRP surface
107.915
8.727
Primer coated GFRP
70.13
25.206
KTL coated steel
79.615
25.352
Source(s):
Authors’ own work
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