Page 17 - Handbook of Adhesion Promoters
P. 17
10 Mechanisms of Adhesion
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Figure 2.6. Cross-sections of PP plates after roll imprinting at 130°C with various undercut angles. a − 35 , b −
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30 , c − 25 , d − 20 , e − 10 , f − 0 . [Adapted, by permission, from Matsuzaki, R; Tsukamoto, N; Taniguchi, J,
Int. J. Adh. Adh., 68, 124-32, 2016.]
lap joints (shear testing) are likely influenced by the chemical composition of the surface
(absorption and chemical bonding), whereas the mechanical interlocking predominates in
the double cantilever beam joints (mode I testing) which causes delamination of the sub-
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strates. This experiment shows that the geometry of force application plays an essential
role in the mechanism of damage and the range of forces which can be tolerated by the
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material.
