Peel adhesion and viscoelasticity of rubber–resin blends

Wiley - Tập 18 Số 8 - Trang 2597-2608 - 1980
D. W. Aubrey1, M. Sherriff1
1National College of Rubber Technology, Polytechnic of North London, Holloway Road, London N7 8DB, England

Tóm tắt

AbstractMixtures in various proportions of natural rubber (NR) and each of two tackifier resins, a poly‐β‐pinene and a modified pentaerythritol rosin ester, were used as the adhesive layer in joining a flexible polyester strip to a plane glass substrate. Measurements of the force required to peel the strip from the glass at a 90° angle were made over a range of pulling rates at several temperatures. Application of time‐temperature superposition enabled a master curve of (reduced) peel force versus (log) pulling rate at a standard temperature (296 K) to be obtained for each adhesive composition. The master curves showed, in increasing order of pulling rate, some or all of four different modes of peeling: (i) peeling with viscous adhesive response, (ii) peeling with rubbery response, (iii) oscillatory or slip‐stick peeling, and (iv) peeling with glassy adhesive response. In general, transitions between the different peeling modes were quite abrupt. Increase in concentration of tackifier resin caused displacement of the master curve toward lower pulling rates [an effect interpreted in terms of an increasing adhesive glass temperature (Tg)], and a superimposed displacement of the transition between peeling modes (i) and (ii) toward higher pulling rates‐an effect attributed to reduction in adhesive average molecular weight. The influence of the tackifier resin in modifying the viscoelastic characteristics of the adhesive was further demonstrated in a comparison of the peel force master curves with corresponding master curves of dynamic storage modulus.

Từ khóa


Tài liệu tham khảo

10.1080/00218466908078882

10.1098/rspa.1969.0085

Andrews E. H., 1973, Proc, R. Soc. London Ser. A, 332, 385, 10.1098/rspa.1973.0032

10.1016/0095-8522(64)90041-8

T. K. M.Wong Ph. D. Thesis Council for National Academic Awards London 1969.

Aubrey D. W., 1975, Ned. Rubberind., 36, 1

10.1002/polc.5070030117

10.1002/app.1971.070150222

10.1002/app.1973.070171114

10.1002/pol.1978.170161017

Aubrey D. W., 1969, J. Inst. Rubber Ind., 2651

10.1002/app.1969.070131014

Aubrey D. W., 1977, Developments in Adhesives–1, 141

10.1002/jctb.5010020901

A. A.Sheikh Ph. D. Thesis Council for National Academic Awards London 1973.

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Wiley

Tập 18 Số 8

2597-2608

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