Official Journal of the Japan Wood Research Society
Table 1 Viscosities of different resin-microsphere formulations measured with a cone/plate rheometer at a constant shear rate of 10 s−1, at 20 and 40 °C, immediately after hardener addition, as well as 1 and 2 h afterwards, to determine pot life
From: Urea-formaldehyde microspheres as a potential additive to wood adhesive
Ratio of microspheres:resin | Viscosity [mPa·s] | |||
|---|---|---|---|---|
0 h | 1 h | 2 h | ||
20 °C | 40 °C | |||
0.0:1 | 312 | 348 | 1.02 × 103 | 6.81 × 104 |
0.1:1 | 245 | 284 | 665 | 2.91 × 104 |
0.5:1 | 191 | 232 | 331 | 1.34 × 103 |
1.0:1 | 298 | 375 | 397 | 1.07 × 103 |