Beech bark was characterized and evaluated as an adhesive filler in plywood manufacturing, and the effects on the bonding quality and the formaldehyde emission of the plywood panels were examined. Join in the conversation - or start a new one of your own Go to Discussion Boards. Plywood panels were made of formulations with urea-formaldehyde (UF) resin filled with three different concentrations of bark flour (BF): 1 wt%, 3 wt%, and 5 wt%. The University of Florida, the states oldest and largest university, is recognized today as one of the countrys most academically diverse public institutions. Search our FAQ Knowledge base, book a research appointment, reserve a room, register for an event, ask a question, chat, send comments. Though able to trace its history to 1853, the school did not begin its popular football program until the first few years of the 20th century. and events may be of interest to members of the UF main campus community as. ![]() Compared with solid beech wood, beech bark has a higher lignin and extractives content and lower holocellulose content. might be interested in an EndNote class or an exhibit on Harry Potter. ![]() It was confirmed that the bark absorbs formaldehyde and the solution with 5 wt% of bark absorbed the most formaldehyde. Panels with UF/BF formulations at a bark content of 1 wt%, 3 wt%, and 5 wt% had higher wet bonding strengths than those made with the control sample. The most significant reduction in formaldehyde emission (up to 42.3%) of plywood panels and the achievement of high bonding strength was observed for UF/BF samples with a bark concentration of 5 wt%.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |