Exterior Particleboard Bonded with Oxidative Pretreatment and Crosslinking Agent

Brink, David L.; Kuo, Monlin; Johns, William E.; Birnbach, M.J.; Layton, H. D.; Nguyen, Tinh; Breiner, Thomas

doi:10.1515/hfsg.1983.37.2.69

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…With H202 instead of HN03 the boards failed in the 2-h boiling test at 0.65 g/cm 3 density and suffered severe thickness swelling at 0.75 g/cm 3 density. The op timum board-making parameters were established as 180 °C, 7-min press time, and 9.5% mat moisture content (189). Improvement in the particle board properties made by the pro cess based on HN03 surface activation and ammonium lignosul fonate -furfuryl alcohol-maleic anhydride binder was reported to re sult from drying of the HN03 treated chips (190).…”

Section: Nonconventional Bonding With Oxidant Activationmentioning

confidence: 99%

Activation of Wood Surface and Nonconventional Bonding

Zavarin

1984

Advances in Chemistry

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Section: Nonconventional Bonding With Oxidant Activationmentioning

confidence: 99%

Activation of Wood Surface and Nonconventional Bonding

Zavarin

1984

Advances in Chemistry

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“…Topochemical oxidative reactions provide the required active sites for crosslinking and the amount of oxidizer would be substantially less than that required when a similar type of reaction is used for highly selective delignification (Brink and Lin 1978). The increase in bonding observed with increasing effective acid concentration is compatible with either mechanism (Brink et al 1983).…”

Section: Resultsmentioning

confidence: 56%

“…Brink et al (1983) investigated exterior particleboard bonded with oxidative pretreatment and cross linking agent. In the data presented, certain results supports the premise that covalent type linkage are being formed which result in bonding.…”

Section: Resultsmentioning

confidence: 99%

Low resin medium density fiberboard made from chemical activated hardwoods fibers

Doosthoseini

Zarea-Hosseinabadi

Moradpour

2010

J Indian Acad Wood Sci

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This study was conducted to determine properties of medium density fiberboards (MDF) made from treated hardwoods fiber furnishes containing different amounts of two oxidizers, and the addition of limited amounts of synthetic resin. The effects of urea-formaldehyde (UF) resin content (two levels as 5 and 7%), oxidizer type (nitric acid and potassium dichromate), and oxidizer percent (three different levels as 4, 6, and 8%) on some static mechanical and physical properties of dry process interior grade MDF such as modulus of rupture (MOR), and modulus of elasticity (MOE) in bending in dry condition, compression-shear strength (CS sth ), water absorption (WA) and thickness swelling (TS) after 2-and 24-h soaking in cold water were investigated. Thirty six oxidative activated laboratory MDF panels were tested. Test results showed that increasing resin content significantly improved all physical and mechanical properties of treated MDF boards. Nitric acid had better mechanical and physical properties than potassium dichromate. Increasing oxidizer percent improved the physical and mechanical properties of MDF boards. Finally, three-way interaction of variables showed the best values for MOR, MOE and CS sth and WA and TS after 2-and 24-h soaking were discerned for T 6 treatment, i.e. the combination of 7% UF resin content together with 8% nitric acid. The properties for T 6 met the mechanical strength requirements of ANSI standard (ANSI A208. 2-2002) for 120-grade MDF.

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