1 edition of Biological resistance of southern pine and aspen flakeboards made from acetylated flakes found in the catalog.
Biological resistance of southern pine and aspen flakeboards made from acetylated flakes
|Statement||Roger M. Rowell ... [et al.].|
|Contributions||Rowell, Roger M., Forest Products Laboratory (U.S.)|
|The Physical Object|
|Pagination||p. 427-440 ;|
|Number of Pages||440|
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Flakeboards made from flakes acetylated by a new simplified dip acetic anhydride procedure are resistant to attack by brown- white- and soft-rot fungi and tunneling bacteria at acetyl weight.
and aspen control flakes and from acetylated flakes at various weight gains of acetyl (Table 2) show that biological protection is attained at about 10% weight gain in nonleached acetylated southern pine flakeboards, whereas leached flakeboards require about 15% weight gain to become resistant to attack.
Similar. By R.M. Rowell, G.R. Esenther, D.D. Nicholas, et al., Published on 01/01/ Title. Biological resistance of southern pine and aspen flakeboards made from acetylated Cited by: Get this from a library.
Biological resistance of southern pine and aspen flakeboards made from acetylated flakes. [Roger M Rowell; Forest Products Laboratory (U.S.);]. Flakeboards made from flakes acetylated by a new simplified dip acetic anhydride proce dure are resistant to attack by brown- white- and soft-rot fungi and tunneling bacteria at acetyl weight gains above 15%.
Acety lated flakeboards at 18 to 21 % acetyl weight gains are not completely resistant to attack Biological resistance of southern pine and aspen flakeboards made from acetylated flakes book subterranean termites.
Biological resistance of southern pine and aspen flakeboards made from acetylated flakesCited by: Rowell RM, Esenther GR, Nicholas DD, Nilsson T () Biological resistance of southern pine and aspen flakeboards made from acetylated flakes. J Cited by: R.M. Rowell, G.R. Esenther, D.D.
Nicholas, T. NilssonBiological resistance of southern pine and aspen flakeboards made from acetylated flakes Journal of Wood Chemistry and Technology, 7 (), pp. Cited by: BIOLOGICAL RESISTANCE OF ACETYLATED SPRUCE PARTICLEBOARDS AGAINST TO BROWN ROT FUNGI (Coniophora puteana) T., Biological Resistance of Southern Pine and Apsen Flakeboards Made from Acetylated Flakes, Journal of Wood Chemistry and Technology, 7(3), () R.M., Muahl, J.H.
Krzysik, A.M., Properties of Hardboards Made from Author: Eylem Dizman, Ümit Cafer Yıldız, Sibel Yıldız, Mustafa Aslan, Ali Temiz, Engin Derya Gezer.
Abstract. To improve flakeboard dimensional stability and mechanical properties for long-term exterior exposure, we fabricated and tested a highly durable isocyanate-bonded acetylated flakeboard.
Flakeboards were tested for internal bond strength, thickness swell, modulus of elasticity, modulus of rupture, and breaking strength in Biological resistance of southern pine and aspen flakeboards made from acetylated flakes book, Cited by: 3.
ketene-modified southern pine and aspen Biological resistance of southern pine and aspen flakeboards made from acetylated flakes book showed very little loss in acetyl.
Flakeboards made from southern pine and aspen flakes treated with ketene showed a greatly reduced rate and extent of swelling resulting from liquid water sorption as compared to control boards.
Similar results were obtained in swelling tests done in water vapor. The effects of fiber acetylation, resin content, and wax content on mechanical and physical properties. of dry-process hardboard made from aspen and southern pine were investigated. Test results indicate that the modulus of rupture (MOR) and modulus of elasticity (MOE) of the.
hardboard specimens were decreased due to the fiber by: A comprehensive investigation of the effects of heat treatment and acetylation separately and together (combination treatment) on the fungal durability of jack pine wood against a brown rot fungus, Poria placenta (pp), and a white rot fungus, Trametes versicolor (tv) has also been by: 5.
Preliminary tests on strength properties show that flakeboards made from acetylated flakes had lower internal bond strengths than control boards. It is not known if this reduction in internal bond strength is due to the effects of the acetylation procedure on the surface of the flakes, or to a failure in the resin adhering the flakes by: Southern pine, Douglas-fir, and aspen wood flakes were acetylated with acetic anhydride vapor and compared with flakes acetylated with liquid acetic anhydride diluted with xylene.
The rate of acetylation was much lower for the vapor than for the liquid phase reaction. Acetylation weight percent gains above 20 were achieved by both methods. Flakeboards Made from Aspen and Southern Pine Wood Flakes Reacted with Gaseous Ketene. Status of the aspen parkland in the prairie provinces, J.S.
Rowe; Provincial Museum of Alberta Natural History Occasional Paper. Biological resistance of southern pine and aspen flakeboards made from acetylated flakes, R.M.
Rowell, G.R. Esenther, D.D. Nicholas, and T. Nilsson; Journal of Wood Chemistry and Technology. Acetylation Plus Water-repellent Treatment of Wood in Slate Thickness Acetylation Plus Water-repellent Treatment of Wood in Slate Thickness Hafizoğlu, Harzemşah; Yildiz, Ümit Cafer Introduction The wood cell wall is composed of cellulose, hemicelluloses and lignin.
Hydroxyl and other oxygencontaining groups of these polymers attract moisture through. Reaction of lignocellulosic material with uncatalyzed acetic anhydride in the absence of any cosolvent is disclosed.
The process improves dimensional stability and resistance to biological attack of the lignocellulosic by: Biological resistance of southern pine and aspen flakeboards made from acetylated flakes. Wood Chem. Tech. 7(3) Table 1. -- Stability of acetyl groups in pine and aspen flakes after cyclic exposure between 90 and 30 percent RH.
(a) Acetyl content by cycle number Species 0 13 21 33 41 (%) Pine Aspen Start studying Ch 3 construction. Learn vocabulary, terms, and more with flashcards, games, and other study tools. building panel made by bonding together large flat flakes of wood.
wood that has been impregnated with preservative chemicals to increase its resistance to decay and biological attack. creosote. PINE WOOD MODIFICATION BY HEAT TREATMENT IN AIR Bruno M. Esteves,a* Idalina J. Domingos,a and Helena M.
Pereira b Maritime pine (Pinus pinaster) wood has low dimensional stability and durability. Heat treatment was made in an oven using hot air during 2 to 24 h and at ºC. A comparison was made against steam heat treatment. Their first cabins, forts, furniture, and fuel all made use of Southern Pine.
Southern Pine was one of the first species of wood exported from North America. In the early ’s most of Europe was in dire need for wood and Southern Pine was imported for England’s ship construction, furniture, houses, and other building applications.
aldehyde (PRF) adhesives to CCA-treated southern pine (4). In the past, the American Institute of Timber Construction (AITC) did not certify southern pine lumber for glulam if the lumber had previously been treated with CCA (1).
HMR was also used to make flakeboards from C CA-treated wood (7). Epoxy and polyurethane adhesives that strongly ad. Welcome to Telfair Forest Products - Home of finest equestrian bedding you can find.
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Fusiform rust disease of southern pines: Biology, ecology and management (Bulletin) [Schmidt, Robert A] on *FREE* shipping on qualifying offers. Fusiform rust disease of southern pines: Biology, ecology and management (Bulletin)Author: Robert A Schmidt. Inﬂuence of Pine Bark Particle Size and pH on Cation Exchange Capacity James E.
Altland1, James C. Locke, and Charles R. Krause ADDITIONAL INDEX WORDS. container, nursery crops, nutrition, sphagnum moss exchange capacity (CEC) describes the. The bio-based phenol formaldehyde novolac resins were synthesized and characterized.
The applications of these synthesized bio-based novolac PF resins in preparing thermal molding composites were also investigated. It was found that both acid catalysts were effective in the bark-phenol liquefaction for obtaining the adequate phenol substitutes Cited by: 2.
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Standard Grading rules For Southern Pine Author: Southern Pine Inspection Bureau. Comparative Decay Resistance of Heartwood of Yellow Poplar and Southern Pine A Research Proposal (Draft) Michael O. Hunt and Daniel L. Cassens Novem The Purdue Wood Research Laboratory has an ongoing research project with the goal of creating a niche market for pressure-treated, new-growth yellow poplarFile Size: 70KB.
The Pine Chemicals Association also made notable contributions to the project. Franklin Associates, a division of Eastern Research Group (ERG), carried out the work as an independent contractor for this project.
Sarah Cashman was the project. Abstract. Mechanical parameters of Scots pine wood (Pinus sylvestris L.) of low (about 8%) and high (higher than the fiber saturation point) moisture content (MC) subjected to tensile stress along the grains were measurements were performed for microtome samples sliced from either earlywood or latewood and for samples containing both earlywood and latewood.
A reassessment of the compressive strength properties of southern yellow pine bark Thomas L. Eberhardt Abstract Samples of southern yellow pine outer bark and wood were tested in compression to determine values for modulus of elasticity, stress at proportional limit, and maximum crush-ing strength.
Results reported here resolve inconsistencies inCited by: 2. Print Publications Are No Longer Available. In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications.
Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded Cited by: 4.
Acetylated and control solid wood (3/4 by 3/4 by 1/8 inch) and acetylated and control flakeboards (3/4 by 3/4 by 3/4 inch) were placed in test with fungus with Gloeophyllum trabeum. Samples were removed at 12 weeks, and the extent of decay was determined as ovendried weight loss.
Full text of "Density, modulus of elasticity, creep, and durability of hardboard: a bibliography" See other formats. Study materials flashcards from Jennifer H.
on spruce, southern pine, redwood) southern pine. hardboard is made from refined wood fibres held together with natural cement called lignin. It is available in thicknesses up to.
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Thank You. Home >>Additional Materials: Publications. Southern Pine Management Guide: Tree Planting Procedure: Management of Bark Beetles: Clearcutting Myths and Facts: Longleaf Pine Alliance. Quizzes and Activiities. Pine species quiz: Planting quiz: Regeneration quiz: Economics quiz.
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