| Titre : |
Finger jointing green southern yellow pine with a soy-based adhesive |
| Type de document : |
texte imprimé |
| Auteurs : |
Philip H. Steele, Auteur ; Roland E. Kreibich, Auteur ; Petrus J. Steynberg, Auteur ; Richard W. Hemingway, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 49-56 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Bois -- Collage
Chimie écologique
Soja et constituants
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Soybean-based glues were first utilized in 1923 when a patent was granted for a soy meal-based glue. Shortly after World War II, the abundant availability of oil allowed development of soybean-derived glues that were more waterproof and insect proof.
In 1994, Dr. Roland Kreibich began the development of environmentally friendly soybean glues as wood adhesives.
He realized his goal of developing a waterproof exterior adhesive for wood finger joints as a substitute for petroleum-based adhesives. The adhesive he developed is applied as a honeymoon system with the soy-based hydrolyzate applied to one side of a finger joint and a phenol-resorcinol-formaldehyde (PRF) adhesive applied to the other. When these fingers are brought together, the resultant mixture in the joint forms a gel within 5-10 sec. This gelation allows finger-jointed lumber to be handled immediately.
The honeymoon adhesive system was first tested in the western United States on Douglas fir lumber with excellent results. The Western Wood Products Association has certified the honeymoon system for "vertical use only" at Willamina Lumber Co. in Willamina, Ore.
There was some reason to suspect that finger jointing of southern yellow pine (SYP) with the honeymoon system using soy-based adhesive (SBA) might prove more difficult than for western species. The Wood Handbook (1) classes western species in the "bond easily" or "bond well" category, whereas SYP is ranked in the "bond satisfactorily" category. On the other hand, the specific gravity and the green moisture content of SYP (Table I) are nearly identical to those of Douglas fir, a western species that has shown good results with green finger jointing in both laboratory and mill trials. Laboratory and mill trial results soon indicated that results of the honeymoon system with SYP were just as favorable as with western species. |
| Note de contenu : |
- Laboratory tests
- Mill trials
- Future applications |
| En ligne : |
https://drive.google.com/file/d/1eHzWiILrF-oTfFkBFbsbk1xMUF6EHZp3/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20331 |
in ADHESIVES AGE > Vol. 41, N° 10 (10/1998) . - p. 49-56
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