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Your search keyword '"Kamke, Frederick A."' showing total 7 results
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7 results on '"Kamke, Frederick A."'

1. Comparison of Water Resistance for Modified Medium-Density Fiberboard

Author

Irribarra, Luis Molina, Kamke, Frederick A., and Leavengood, Scott

Subjects
Materials research, Business, Forest products industry
Abstract

Commercial medium-density fiberboard (MDF) products, specifically manufactured for water resistance, were evaluated over 8 days under three water exposure regimes: 90 percent relative humidity, one-sided water spray, and one-sided wet pad. A three-cycle wet-pad and drying exposure test was also performed. Rate of swelling, extent of swelling, and irreversible thickness swelling were determined. Acetylated MDF (AMDF) had the best overall performance, followed by steam-injection pressed MDF (SMDF) and polymeric methylene-diphenyl-diisocyanate--bonded moisture-resistant MDF. The fastest rate of thickness swell and linear expansion occurred with exposure to one-sided water spray and the slowest with 90 percent relative humidity exposure. While AMDF was clearly superior after 24-hour exposure, the other MDF products were nearly identical. Significant difference in thickness swell and water absorption between moisture-resistant MDF and SMDF developed after 24 hours. Regardless of the method of water exposure, the trend of best to worst MDF performance was the same., Resistance to water, in particular, dimensional stability in the presence of changing moisture environment, is a desirable characteristic for medium-density fiberboard (MDF). Water resistance is important for interior products, such [...]

Published
2022
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4. Dynamic moisture resistance of chemical and thermal modified plywood.

Author

Kamke, Frederick A., Irribarra, Luis Molina, and Leavengood, Scott

Subjects
CHEMICAL resistance, DIGITAL image correlation, PLYWOOD, THERMAL resistance, MOISTURE
Abstract

Time-dependent response of treated and untreated plywood to various modes of water exposure was studied. Treatments included 1.3-dimethylol-4.5-dihydroxyethyleneurea (DMDHEU) and phenol-formaldehyde (PF). The effect of thermal modification was also investigated. Water exposure regimes included: one-sided water spray, one-sided water soak, and high humidity – all for a duration of 192 h. Direct measurements of dimensional change were recorded, and digital image correlation (DIC) was used to continuously monitor two-dimensional swelling. Over 90% of thickness swell occurred during the first 24 h of liquid water exposure. Swelling was still progressing under 90% relative humidity exposure after 192 h. DMDHEU and PF were statistically equivalent and improved thickness swell by 64% and 60%, for water spray and water soak, respectively. Chemical treatment improved thickness swell by approximately 41% under high humidity. Thermal modification improved thickness swell by 36%, 28%, and 28% for water spray, water soak, and high humidity exposure after 192 h, respectively. DIC measurements during the first 3 h of exposure revealed the fastest rate of thickness swell occurred with one-sided water spray and the slowest rate during one-sided water soak. Overall, PF-treated plywood exhibited the best initial water resistance. After 24 h DMDHEU and PF were equally effective treatments. [ABSTRACT FROM AUTHOR]

Published
2023
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7. Contributors

Author

Akhavan-Safar, Alireza, Ashcroft, Ian, Ashforth, Cindy, Bain, Erich, Blackman, Bamber, Bortner, Michael J., Breedlove, Evan L., Budzik, Michal K., Bulters, Markus, Burns, Barry, Carbas, R.J.C., Carolan, Declan, Carpenter, Samuel, Case, Scott W., Chen, Chao, Choffat, Fabien, Condron, David, Cook, Simon, Corsaro, Antonio, Crimmins, Matthew, da Silva, Lucas F.M., Das, Arit, Davis, Chelsea S., de Armentia, Sara Lopez, de Barros, Silvio, de Buyl, F., de Freitas, Sofia Teixeira, Debor, Felix, del Real, Juan Carlos, Di Fratta, Claudio, Dillard, David A., Dillingham, Giles, Feng, Shaoguang, Forster, Aaron M., Fortman, David, Tenreiro, A. Francisco G., Gohl, Jared A., Handwerker, Hermann, Haque, Nazmul, Harkness, B., Hayez, V., He, Sammy, Hedegaard, Aaron, Hill, John, Huang, Jian-ping (JP), Ilcewicz, Larry, Ivankovic, Alojz, Jackson, Christopher M., Jensen, Robert, Kalantar, Tom, Kamke, Frederick A., Kaufmann, Marvin, Kelch, Steffen, Khatavkar, Vinayak, Kimberlain, J., Lean, John, Li, Chaodi, Lindeman, David, Lopes, António Mendes, Losada, Martin E., Madrid, Mario, Marques, E.A.S., Marzi, Stephan, McGuire, Jeffrey A., Mojdehi, Ahmad Rezaei, Momm, Guilherme Garcia, Moreira Arouche, Marcio, Murphy, Neal, Nairn, John A., Nicoli, Edoardo, Pardoen, Thomas, Pascoe, John-Alan, Patankar, Kshitish A., Paz, Eva, Pollum, Marvin, Quan, Dong, Ramalho, Gabriel M.F., Rao, Yuanqiao, Roberts, Rose, Scarselli, Gennaro, Schlechte, Jay S., Seitz, Michelle Elizabeth, Seitz, Wolfgang, Seneviratne, Waruna, Shan, Colin Li Pi, Shephard, N., Sun, Fengzhen, Taylor, Ambrose C., Trace, Ashley, Trimiño, Luis, Tuft, Brad, Turner, Kevin T., Turunen, Jani, Vallée, Till, Vita, Raffaella De, Voß, Morten, Wan, Grace, and White, Christopher C.

Published
2023
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