Environmental Engineering Reference
In-Depth Information
Table 4.1 Physical properties of polymers and composites (control and one year deployed samples)
Name of the
polymers
Surface energy (mN/m)
Root mean square
roughness (nm)
Hardness
Mechanical properties
Control
After one year
Control
One year
Control
One year
Control
One year
Tensile
strength
(MPa)
Elongation (%)
Tensile
strength
(MPa)
Elongation
(%)
Silicone
rubber
21.43 ± 0.15
32.1 ± 2.50
168.49
188.97
17.0 ± 0.58
15.67 ± 0.47
3.32 ± 0.7
203.45 ± 2.40
2.33 ± 0.9
214.7 ± 3.33
PU
36.61 ± 0.20
40.5 ± 1.52
41.37
181.89
43.2 ± 1.58
41.00 ± 0.05
13.58 ± 0.12
276.05 ± 2.72
11.71 ± 0.27
318.55 ± 3.16
Polyester
34.46 ± 0.47
55.59 ± 1.33
28.95
102.75
43.6 ± 1.30
40.00 ± 2.12
54.29 ± 1.62
2.71 ± 0.53
46.94 ± 1.81
2.14 ± 0.47
Syntactic
foam
38.32 ± 0.97
63.61 ± 2.31
62.92
317.05
41 ± 1.13
34.33 ± 0.47
28 ± 0.95
4.5 ± 0.39
26.64 ± 0.84
2.13 ± 0.27
GFRP
37.59 ± 1.84
54.75 ± 2.26
365.9
378.32
47.2 ± 1.53
44.00 ± 0.70
147 ± 3.46
5.5 ± 0.48
119 ± 2.39
6.3 ± 0.64
CFRP
47.63 ± 1.37
61.11 ± 2.48
324.8
338.12
37 ± 1.25
30.00 ± 0.02
−
−
−
−
