A comparative study of the application-based properties of hot melt adhesives (HMAs) formulated with different waxes

A comparative study of the application-based properties of hot melt adhesives (HMAs) formulated with different waxes

In this study, three chemically similar but morphologically different high melting hydrocarbon waxes having similar DSC peak melting temperatures were analysed, and the influence of their molecular architectures on hot melt adhesive (HMA) performance, was evaluated. Selected waxes included each of t...

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Bibliographic Details
Published in:International journal of adhesion and adhesives Vol. 111; p. 102974
Main Authors: Robertson, Divann, van Reenen, Albert, Duveskog, Heidi, Brady, Fran
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 01-12-2021
Elsevier BV
Subjects:
A.) Hot melt
Adhesion
C.) Structure property relations
Comparative studies
Crystallization
Ethylene vinyl acetates
Fischer-Tropsch
Heat resistance
High temperature
Molecular structure
Polyethylene
Polyethylenes
Thermal degradation
Thermal resistance
Traction force
Vinyl acetate
Wax
Waxes
Windows (intervals)
Polyethylene
A.) Hot melt
C.) Structure property relations
Fischer-Tropsch
Wax
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Summary:In this study, three chemically similar but morphologically different high melting hydrocarbon waxes having similar DSC peak melting temperatures were analysed, and the influence of their molecular architectures on hot melt adhesive (HMA) performance, was evaluated. Selected waxes included each of the following types: Fischer Tropsch wax (FT), by-product polyethylene wax (BPPE) and first intention polyethylene wax (FIPE). Both, ethylene-co-vinyl acetate (EVA) and metallocene catalysed polyethylene (mPE) based HMAs were formulated. The high chain linearity of FT wax resulted in faster crystallization and faster adhesive set times as well as higher peel adhesion, shear adhesion and IOPP heat resistance temperatures. Wax viscosities were in direct correlation with resultant HMA viscosities. EVA HMAs had longer set times and were more prone to thermal degradation upon prolonged exposure to elevated temperatures and was most pronounced for FIPE wax. Average traction force was dependent on the open time and wax/polymer combination with FT showing a smaller open time window for both EVA and mPE based HMAs.
ISSN:0143-7496
1879-0127
DOI:10.1016/j.ijadhadh.2021.102974