What Role Does PE Wax Play In Hot Melt Adhesive?

2024-05-09   Pageview:72

What role does PE wax play in hot melt adhesive? Polyethylene wax has a wide range of applicability. Polyethylene wax has good stability when used in hot melt adhesives. Compared with mondan wax, polyethylene wax has better thermal stability. Because it does not precipitate at high temperatures, it will not have any impact on the appearance properties of the hot melt adhesive.

The surface energy of wax is low. When the amount of wax increases, the wettability of the hot melt adhesive increases, which can increase the adhesion. Using microcrystalline wax instead of paraffin wax can improve adhesion caused by valence bonding forces. This is because microcrystalline wax hot melt adhesive has a low modulus and a long setting time.

Effect of PE wax on viscosity and fluidity of hot melt adhesive:
The viscosity and fluidity of hot melt adhesive are closely related to the sizing performance. Choosing EVA with a large MI or tackifying resin with a small melt viscosity can reduce the viscosity of the hot melt adhesive. You can also choose EVA with different MI levels to adjust the application viscosity of the hot melt adhesive.
However, the biggest impact is on wax, because wax is the component with the smallest viscosity in hot-melt adhesive. Increasing the amount of wax can significantly reduce the viscosity of hot-melt adhesive and increase its fluidity. Try to use materials with smaller viscosity and smaller viscosity. Wax with smaller sub-mass can increase the amount of EVA or use low-MI EVA.

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