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| Akrowax PE-LM |
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| Low molecular weight polyethylene |
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Akrowax PE-LM is a low molecular weight polyethylene used as a process aid in natural and synthetic rubbers.
Its outstanding compatibility and excellent flow and release characteristics make Akrowax PE-LM useful in almost every rubber compound.
The "LM" version provides a lower drop or softening point than Akrochem's standard PE wax.
Akrowax PE-LM may be used to:
- improve flow for injection and transfer molding, provide release from hot metal surfaces(internal mixers, hot calendar rolls, extruder dies, and molds)
- improve filler dispersion when added early in mix
- at higher loadings (>5phr), provide a glossier finish to cured parts
Akrowax PE-LM is typically used at the 2-6 phr level in virtually all elastomers (1 phr is the usual recommendation for fluoroelastomers).
Normally up to 5 phr may be added to a compound with little effect on vulcanized properties. High loadings (up to 20 phr) can be used in EPDMs to achieve high durometer non-black stocks that process well.
Akrowax PELM should be melted when dispersed in a compound to prevent molding flaws.
Akrowax PE-LM's lower softening point can provide release from equipment at lower processing temperatures.
For example, the temperature at which a stock releases from a calendar might be lowered 10'C (say from 115°C to 105°C) thus reducing stock heat history. |
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Drop Point: 109°C
Acid Value (ASTM): 0
Specific Gravity: 0.93
Viscosity at 140'C, mPa.s: 120
Appearance : fine, white grains |
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