Official Journal of the Japan Wood Research Society
Adhesives | Fibrillated bark slurry adhesive | fibrillated and freeze-dried bark adhesive2 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CF1 | 1-1 | 1-2 | 1-3 | 1-4 | 1-5 | 1-6 | 2-1 | 2-2 | 2-3 | 2-4 | 2-5 | 2-6 | |
Total solids content (%) | 55 | 39 | 33 | 30 | 27 | 24 | 21 | 36 | 35 | 30 | 27 | 24 | 21 |
Reactive components in adhesive (%) | |||||||||||||
PF resin content | 32.0 | 27.3 | 19.8 | 15.0 | 10.8 | 7.2 | 4.2 | 25.2 | 21.0 | 15.0 | 10.8 | 7.2 | 4.2 |
Polyflavanoid content | 0.0 | 6.2 | 6.9 | 7.9 | 8.5 | 8.9 | 8.9 | 5.7 | 7.4 | 7.9 | 8.5 | 8.8 | 8.8 |
Bonding test results | |||||||||||||
Average of shear strength3 | 0.84 ± 0.21c | 1.06 ± 0.25ab | 1.07 ± 0.32a | 0.88 ± 0.25bc | 0.82 ± 0.21c | 0.81 ± 0.19c | 0.77 ± 0.22c | 1.04 ± 0.28ab | 1.13 ± 0.30a | 0.74 ± 0.15c | 0.71 ± 0.13c | 0.74 ± 0.24c | 0.70 ± 0.13c |
Average wood failure ratio3 | 87.2 ± 9.9ab | 72.2 ± 35.3abc | 76.9 ± 27.2abc | 65.3 ± 37.6bcd | 56.0 ± 26.0cde | 52.2 ± 39.0de | 78.1 ± 20.7abc | 89.1 ± 15.5ab | 90.9 ± 13.3a | 72.0 ± 33.3abcd | 32.5 ± 35.3ef | 21.9 ± 25.6f | 27.8 ± 28.6f |
Judgment of test results (JAS)4 | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS | PASS |