Testing of set recovery of unmodified and furfurylated densified wood by means of water storage and alternating climate tests

Buchelt, Beate; Dietrich, Tobias; Wagenführ, André

doi:10.1515/hf-2013-0049

Cited by 28 publications

(13 citation statements)

References 12 publications

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“…The densification processes are often assessed via the behaviour of densified wood in contact with water, permanent water contact, or an environment with high RH. When performing dimensional stability tests, the applied method influences the swelling parameters, spring-back, and set recovery (Buchelt et al 2014).…”

Section: Methods Of Achieving Permanent Fixationmentioning

confidence: 99%

Compressed and moulded wood from processing to products

Kutnar¹,

Sandberg

Haller

2015

Holzforschung

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This paper presents the state of the art of different wood densification processes as one emerging process technology. The main principles for the processes are discussed, such as bulk and surface densification, bending, moulding of shells and tubes, as well as methods for reducing the shape memory effect of densified wood. The main challenges are in the field of scaling up to industrial applications. To provide a better understanding with this regard, some relevant scientific results are presented. Furthermore, the discussion considers the contribution of thermo-hydro and thermohydro-mechanical processes to a sustainable and lowcarbon economy.

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Section: Methods Of Achieving Permanent Fixationmentioning

confidence: 99%

Compressed and moulded wood from processing to products

Kutnar¹,

Sandberg

Haller

2015

Holzforschung

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“…However, wax treatment reduces adhesion of wood [63], and it does not improve subterranean termite resistance [64]. Moreover, it is easy for the wax to convert to a liquid when the temperature is above its melting temperature [51••], thereby limiting its utilization.…”

Section: Wax Impregnationmentioning

confidence: 99%

“…Similar to thermoset resins, furfuryl alcohol can be used to impregnate wood for fixing densified or compressed wood [64,93,94]. The polymerization of the furfuryl alcohol solution in the wood structure can reduce the spring back effect of wood after undergoing a high temperature and pressure treatment, which significantly increases dimensional stability [64,94].…”

Section: Furfurylationmentioning

confidence: 99%

“…The polymerization of the furfuryl alcohol solution in the wood structure can reduce the spring back effect of wood after undergoing a high temperature and pressure treatment, which significantly increases dimensional stability [64,94]. Densified furfurylated wood products exhibited a higher dimensional stability and increases in other properties when compared to those modified with prepolymer.…”

Section: Furfurylationmentioning

confidence: 99%

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Dimensional Stabilization of Wood

Kocaefe

2015

Curr Forestry Rep

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This paper comprehensively reviews the relevant literature and presents the methods and processes used to investigate the dimensional stabilization of wood using various modification techniques, including (a) hydrophobization of wood surfaces to block the entrance and exit of water; (b) impregnation treatment with bulking agents, such as resin and wax, to maintain wood in a swollen state and diminish dimensional changes caused by moisture; (c) chemical treatment with different chemical agents to reduce the hygroscopicity of the wood; and (d) high temperature heat treatment, which modifies wood components, reducing accessible hydroxyl groups and decreasing the possibility of water absorption. The results of dimensionally stabilizing wood via different treatments are interpreted and compared, and the effects of treating conditions and parameters on the dimensional changes of wood are analyzed.

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“…There are various modified wood materials in the market obtained by acetylation, furfurylation, and modification with low-molecularweight reactive resins (Stamm and Seborg 1936;Buchelt et al 2014;Moghaddam et al 2016). These products are found in airports, stadiums, subway stations, hotels, and houses as floor, furniture, and decorative items.…”

Section: Introductionmentioning

confidence: 99%

Combustion behavior of Scots pine (Pinus sylvestris L.) sapwood treated with a dispersion of aluminum oxychloride-modified silica

Xiao

Mai

et al. 2016

Holzforschung

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Treatment of wood with aqueous dispersions of silica that have been modified with aluminum oxychloride (AlOCl) can impart wood water repellence and increased resistance to fungal decay. This study is a comparative survey on the effects of treatment with modified and non-modified silica dispersions in terms of the combustion behavior of the Scots pine (Pinus sylvestris L.) to evaluate the fire risk of this wood utilized as a construction material. The thermogravimetric results showed that treatments with the silica dispersions did not change the pyrolysis temperature of wood polymers, i.e. there was no synergetic interaction between silica and cell wall polymers during pyrolysis. Cone calorimetry (CONE) indicated that the silica-treated wood required longer time for ignition than the untreated control, but wood chars were similar. Treatments with both silica dispersions led to considerable reduction in the heat release (HR) and smoke production, but the cationically modified silica was more efficient than the unmodified silica. These findings were interpreted that incorporation of modified silica did not substantially influence the pyrolysis of cell wall polymers because they have not penetrated the cell wall; they have rather reduced the fire risk via forming a barrier against oxygen access and a thermal protection shield.

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Testing of set recovery of unmodified and furfurylated densified wood by means of water storage and alternating climate tests

Cited by 28 publications

References 12 publications

Compressed and moulded wood from processing to products

Compressed and moulded wood from processing to products

Dimensional Stabilization of Wood

Combustion behavior of Scots pine (Pinus sylvestris L.) sapwood treated with a dispersion of aluminum oxychloride-modified silica

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