PEG 4000 Ceramic Spray-Drying Aid
CAS Number: 25322-68-3
Polyethylene glycol 4000 (PEG 4000) is the preferred molecular weight grade for ceramic spray-drying granulation, balancing granule flowability, pressing behavior, and burnout characteristics. As a spray-drying additive at 1–3 wt%, PEG 4000 produces free-flowing, near-spherical granules with good inter-granule bonding strength, enabling consistent die filling and uniform compaction in automated pressing lines.
Technical Specifications
| appearance | White waxy flakes or powder |
| purity (%) | ≥99 |
| melting point (°C) | 53–59 |
| molecular weight (g/mol) | 3500–4500 |
| hydroxyl value (mg KOH/g) | 26–32 |
Applications
- Spray-drying granulation aid for ceramic tile powders
- Granule flow aid for automated tile pressing lines
- Binder component in ceramic spray-dried powders for pressing
- Lubricant additive in ceramic granule formulations
- Co-binder with PVA in spray-dried technical ceramic powders
Key Features
- Optimal MW for spray-drying: balances granule strength and flow
- Produces near-spherical granules with excellent pressing behavior
- Clean burnout below 450 °C ensures no carbon residue in fired tiles
- Water-soluble—easy to prepare concentrated binder feed solutions
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CAS Number
25322-68-3
Category
Ceramic / Glass AdditivesAvailability
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