Dipentaerythritol (DiPER) High-Char Flame Retardant
Featured inFlame Retardants
Dipentaerythritol (DiPER) is a hexafunctional polyol carbon source used in intumescent flame retardant systems where higher char yields and improved char stability versus mono-pentaerythritol are required. The additional hydroxyl groups and higher molecular weight of DiPER produce a more cross-linked, mechanically robust char that better resists slumping and cracking under fire conditions. DiPER is preferred in high-specification structural steel coatings requiring extended fire resistance periods (90–120 minutes) and thick-film intumescent systems.
مشخصات فنی
| appearance | White crystalline powder |
| moisture (%) | <0.2 |
| ash content (%) | <0.01 |
| melting point (°C) | 215–222 |
| hydroxyl value (mgKOH/g) | 1090–1120 |
| dipentaerythritol content (%) | ≥96 |
حوزههای کاربرد
- High-specification structural steel coatings requiring 90–120 min fire resistance rating
- Thick-film intumescent coatings for offshore and petrochemical plant protection
- Cellulosic and hydrocarbon fire curve intumescent coatings for critical structures
- High-char polyolefin intumescent FR compounds for heavy-duty cable management
- Intumescent sealants and fire collars for large-diameter pipeline penetrations
ویژگیهای محصول
- Six hydroxyl groups per molecule produce higher char cross-link density and mechanical char stability than PER
- Improved char cohesion at high temperatures prevents crack-induced flame penetration in extended fire tests
- Lower water solubility than PER improves weathering resistance of outdoor intumescent coatings
- Compatible with all standard IFR systems (APP/MEL) as a high-performance PER upgrade
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