Urea Formaldehyde Adhesive Powder (Grade E1)
| Typical values | Characteristics |
| Powder | |
| White powder | Appearance |
| 0.5 ± 0.05 gr/cm3 | Bulk density |
| 2 wt% | Moisture content, max |
| 50% Solution (1:1 liquid glue) | |
| 200 – 400 mPa.s | Viscosity at 25 °C |
| 0.3 – 0.5 wt% | Free formaldehyde content |
| 9 – 10.5 | pH at 25 °C |
| 1.2 – 1.3 | Specific gravity at 20 °C |
| 180 s | Gel time at 100 °C with hardener, max |
| 4 days | Shelf life at 25 °C |
Powdered urea formaldehyde adhesive is a thermosetting white polymer, which is used as liquid adhesive after mixing with water. The adhesive has high bonding strength toward most cellulosic materials and due to its low formaldehyde emission; it is compatible with E1 European standard. Powdered E1 urea formaldehyde adhesive is preferred to liquid adhesive where production runs are infrequent and longer storage life is needed.
Applications
- Manufacturing of low formaldehyde emitting wood particle board, plywood, furniture and other wood products.
Storage life
6 months at 25 °C
Packaging
25 kg laminated PP bags