Official Journal of the Japan Wood Research Society
From: Modifying elastic modulus of two-component polyurethane adhesive for structural hardwood bonding
Chemicals | Surface tension \(\sigma_{\text{l}}\) (mN/m) | Disperse part \(\sigma_{\text{l}}^{\text{d}}\) (mN/m) | Polar part \(\sigma_{\text{l}}^{\text{p}}\) (mN/m) | Purity (%) |
---|---|---|---|---|
Distilled water | 72.8 | 21.8 | 51.0 | – |
Diiodomethane | 50.8 | 50.8 | 0.0 | 99.9 |
Ethylene glycol | 47.7 | 30.9 | 16.8 | 99.5 |
Glycerin | 64.0 | 34.0 | 30.0 | 98.0 |