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The performance of the adhesive formulations above was tested for the following properties:
Peel adhesion failure temperature (PAFT)
Shear adhesion failure temperature (SAFT)
Open time @ 177°C
Set time @ 177°C
Brookfield viscosity @ 150°C and 177°C
High- and low-temperature fiber tear
The properties of each hot-melt adhesive formulation are compared in the graph below.
All the formulations containing EPOLENE® wax resulted in hot-melt adhesives with similar PAFT and SAFT. Full or partial substitution of Fischer–Tropsch wax with EPOLENE® wax is possible without any negative effects on the adhesive and cohesive performance of the formulation.
Substitution of FT wax with EPOLENE® resulted in hot-melt adhesive formulations with similar open time and set time.
The viscosity of the hot-melt adhesive formulation was slightly increased when FT wax was substituted with EPOLENE®. Larger viscosity increases are observed with higher amounts of EPOLENE®. Despite this, viscosity remained within a workable range for the hot-melt adhesive formulation.
Fischer–Tropsch wax is a key component in hot-melt adhesives to adjust properties such as set and open time, melting point, and viscosity. Finding a suitable replacement for Fischer–Tropsch wax in hot-melt adhesive formulations is more important when this wax becomes supply constrained. EPOLENE® polymers are polyethylene waxes produced domestically in Longview, Texas, by Westlake, a leader in polyethylene waxes and specialty chemicals. EPOLENE® N-37 has been shown to match the performance of Fischer–Tropsch wax closely without having a negative impact on hot-melt adhesive properties and is recommended as a substitute for Fischer–Tropsch wax. Click below to request a sample of EPOLENE® wax for your hot-melt adhesive applications today.
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