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Assessment of the correlation between tack and visco-elasticity.

Duncan, B C; Ogilvie-Robb, K (1999) Assessment of the correlation between tack and visco-elasticity. NPL Report. CMMT(A)190

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Tack is the property of an adhesive that enables it to form a bond with a surface on immediate contact under light pressure. Tack performance is thought to be related to the visco-elastic properties of the polymeric adhesive. Hence, there is the possibility of using visco-elastic characteristics to predict tack in different bonding applications. Dynamic measurement methods, such as oscillatory shear, have been used to characterise the visco-elastic properties of double sided pressure sensitive adhesive tapes. There are some correlations between these properties and the tack performance of the tapes. However, the correlations break down under certain conditions. Tack strength may be controlled by the tensile extension and cohesive rupture of fibril structures. These are not characterised by these dynamic techniques but could possibly be studied by extensional rheological techniques.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CMMT(A)190
Subjects: Advanced Materials
Advanced Materials > Adhesives
Last Modified: 02 Feb 2018 13:18
URI: http://eprintspublications.npl.co.uk/id/eprint/1159

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