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Effect of bonding temperature on the joint strength of polyolefln/butyl rubber and polyolefin/ethylene‐vinylacetate copolymer
Author(s) -
Sung NakHo
Publication year - 1979
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760191109
Subject(s) - polyolefin , materials science , composite material , adhesive , natural rubber , copolymer , melting point , substrate (aquarium) , fourier transform infrared spectroscopy , olefin fiber , polymer , layer (electronics) , chemical engineering , oceanography , engineering , geology
The effect of bonding temperature on the peel strength of adhesive joints, polyolefin/butyl rubber and polyolefin/ethylene‐vinylacetate copolymer, has been investigated. The peel strength, measured at room temperature, undergoes a sharp transition from its low values to higher values as the bonding temperature is changed from below to above, the melting point of the substrate. This increase in peel strength is accompanied by changes in failure mode from the apparent interfacial failure to cohesive failure through the adhesives. Investigation of the interface using Fourier Transform Infrared Internal Reflection spectroscopy and interference microscopy indicates that the sharp increase in the peel strength at the melting temperature of substrate is associated with the presence of an interdiffused layer at the interface.