Rapid determination of formaldehyde emission potentials of binders for the woodworking industry

Dorner, F.; Berger, D.; Müller, Uwe; Brüggemann, Oliver; Panzer, U.

doi:10.1007/s00107-011-0558-7

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…In summary, the panel with 3% urea loaded on DE, hot-pressed 15 s, delivered the most significant reduction, which equaled 45% with respect to the reference level ( Figure 4). The used 3h-flask method is rapid and efficient for the collection of formaldehyde release data of wood-based composites (Dorner et al 2012). With the flask method the quantity of material is rather small, and the ratio of open edges over exposed surfaces of the tested specimens is high (Salthammer et al 2010).…”

Section: Formaldehyde Emissionmentioning

confidence: 99%

Diatomaceous earth as an inorganic additive to reduce formaldehyde emissions from particleboards

Funk

Wimmer²,

Αδαμόπουλος

2015

Wood Material Science & Engineering

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The presented research is about the use of a new type of a functional inorganic additive in particleboards, for the purpose of reducing free formaldehyde releases. One-layered particleboards were prepared in the laboratory by mixing industrial wood particles and urea-formaldehyde resin. Natural, abundantly and cheaply available nano-mesoporous diatomaceous earth (DE) was used, without and in combination with urea as a scavenger. Silica quartz sand was also added as a nonporous analogy. Particleboards were pressed at two press factors (9 and 15 s/mm). Formaldehyde release was determined using the rapid 3-hour-flask method (DIN EN 717-3). As a result, DE additions insignificantly reduced bending properties of particleboards. Internal bonding was in part significantly lowered. The particleboard produced with 3% urea loaded on 5% DE prior to application almost halved (-45%) the formaldehyde release. Formaldehyde release was on the average 17% lower when pressed at 15 s/mm instead of 9 s/mm. By loading urea onto the nano-mesoporous structure of DE, an improved scavenging function of urea could be shown.

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Section: Formaldehyde Emissionmentioning

confidence: 99%