|
|
| About Freeword: "plywood" |
| List | Prev. | Next |
| PDF : |  11040137.pdf |
| title(En) : | Studies on Water Soluble Phenol, Resin Adhesive for Plywood |
| author(En) : | Yuzo Nakarai, Toshiki Watanabe |
| information : | Mokuzai Gakkaishi 11(4), 137-141 (1965) |
| assort : | Original Article |
| summary(En) : | In this study we experimented on the improvement of adhesion properties for water soluble phenol resin adhesive for plywood. The result are as follows. 1) On the condensation reaction of phenol and formaldehyde, if resorcinol is added in the ratio of 5∼10 percent to phenol, it is possible to obtain the perfect water soluble phenol resin adhesive at about pH 7.0, not using much alkali catalyst as usual. 2) When resorcinol resin was mixed in the ratio of 20∼30 parts to 100 parts of water soluble phenol resin adhesive, an adequate shear strength was obtained even when the curing temperature was dropped to 100∼120°C. 3) It is efficient as much as 2) to add the resorcinol and formaldehyde in the ratio of 5∼10 parts to 100 parts of water soluble phenol resin adhesive. In the case of the alkaline phenol resin adhesive, this tendency is especially remarkable. |