Suid, Nurul Hamiza
(2014)
Adhesion Properties Of Benzoly Peroxide Crosslinked Epoxidized Natural Rubber (ENR 25) - Based Pressure Sensitive Adhesives.
Masters thesis, Perpustakaan Hamzah Sendut.
Abstract
The objective of this study was to evaluate the influence of crosslinking density, rate of
testing and thickness coating on the adhesion properties of epoxidized natural rubber
(ENR 25)-based adhesives using coumarone-indene, gum rosin and petroresin as the
tacki fiers. Toluene and polyethylene terephthalate (PET) were used as solvent and
coating substrate respectively. A SHEEN hand coater was used to coat the adhesive on
the substrate. All adhesion properties were determined by a LJyod Adhesion Tester
operating at different rates of testing. Results showed that the adhesion properties of
ENR 25-based adhesive increased with crosslink density and reduced again after the
optimum crosslink. The loop tack and peel strength of cournarone-indene, gum rosin and
petroresin passed through a maximum value at I parts per hundred parts of rubber (phr),
2 phr and 3 phr benzoyl peroxide concentration respectively, an observation which was
attributed to the optimum crosslinking of ENR 25 where optimum cohesive and
adhesive strength was obtained.
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