Adhesive peel strength

Amauroux, N, Petit, J. and Leger, L., Role of interfacial resistance to shear stress on adhesive peel strength. Langmuir, 17(21), 6510-6517 (2001). 

With elastomeric adhesives peel strength is dependent on bond thickness. The elongation characteristics of these adhesives permit a greater area of the bond to absorb the applied load as the bond thickness increases. The T-peel test is probably the most widely used peel test since it uses only one... 

The adhesion recorded reflects not only the fundamental adhesion at the interface but also the mechanical response of the adhesive, substrate and interfacial region (see Rheological theory). Equation 7 in the article on Peel tests shows how the practical adhesion (peel strength) may be related to the fundamental adhesion (work of adhesion) for that type of test. 

Metal-to-metal peel tests quickly became popular, even mandatory, as a demonstration of toughness, yet the data had no use in direct stress analysis. Successful adhesives in service exhibit a range of peel strengths as high as nine to one. This strongly suggests that adhesive peel strength is not wholly relevant to the performance of bonded structure. 

This and LDPE were immiscible [103 105], forming thermoplastic elastomers with two continuous phases or IPNs. These were improved by adding compatibilizers such as epoxidized NR-I-maleated LDPE or sulfonated ethylene propylene-diene rubber (EPDM)-b maleated LDPE. These increased tensile strength, elongation, and adhesive peel strength. 

Acrylic sealants are mbbery low recovery materials and not tme elastomers. They have excellent adhesion peel strength, 2.1 to 2.6 kN/m, on a wide range of substrates and can be applied to wet, oily, or dusty smfaces. They stretch to 200 to 250% before failure, which is normally cohesive. Acrylics are best for small joints with limited movement, +7.5 to +12.5%. In wider joints they tend to wrinkle imder cyclic joint movement. Acrylic sealants... 

As with other adhesives peel strengths are considerably lower than direct tensile or tensile shear values so joint design is important. A peel strength of about 4 Newtons per millimetre joint width is the best that can be achieved to date with a toughened... 

Adhesion, peel strength, extrusion coating, foil, coating weight, fracture mechanics... 

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