Advances in Materials Science and Engineering / 2015 / Article / Tab 1

Research Article

Adhesion Strength of Cellulosic Varnish Coated Wood Species as Function of Their Surface Roughness

Table 1

Roughness and adhesion strength test results.

Roughness value () (µm)Adhesion strength (N/mm2)
Species grit sizeTangentialRadialTangentialRadial
80 180 80 180 80 180 80 180

Beech
(0.680 g/cm3)
35.10
(3.82)*
29.85
(3.38)
34.39
(4.64)
32.85
(3.44)
2.42
(0.19)
2.36
(0.25)
2.18
(0.23)
2.13
(0.25)
Alder
(0.520 g/cm3)
37.66
(5.62)
33.69
(3.40)
35.81
(3.66)
30.81
(4.83)
2.15
(0.28)
1.92
(0.12)
2.01
(0.18)
1.96
(0.29)
Spruce
(0.420 g/cm3)
36.98
(3.98)
32.10
(8.61)
35.13
(4.33)
26.05
(3.03)
2.06
(0.40)
1.92
(0.25)
2.00
(0.22)
1.93
(0.16)
Fir
(0.680 g/cm3)
37.00
(4.39)
27.53
(6.68)
36.68
(4.42)
24.03
(3.69)
2.06
(0.32)
1.91
(0.29)
1.89
(0.15)
1.86
(0.18)

Values in parentheses are standard deviations.

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