Abstract
Pine tannin extract has never been used before as an adhesive for plywood. Interior and exterior grade plywood panels were prepared based on various adhesive formulations with pine tannin extract on both, hardwood and softwood veneers. The best performing formulations appeared to be those in which the pine tannin was added in a proportion of 20–35% to a phenol formaldehyde or a urea formaldehyde resin or to pMDI (4,4′-methylene diphenyl diisocyanate). Mixed adhesive formulations where a small amount of pMDI was added on top of 20% synthetic formaldehyde resin gave plywood with even better performance but with shorter pot life of the adhesive mix.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.