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Verminderung der Formaldehyd-Emission von Möbeln
Holz als Roh- und Werkstoff, 1981Aus Spanplatten gefertigte Mobel konnen Formaldehyd an die Raumluft abgeben. Der Formaldehyd entweicht uber offene Schmalflachen, Frasnuten, Bohr- und Schlussellocher. Auch durch wenig gasdichte Beschichtungen kann Formaldehyd ausstromen. Durch Abdichtung offener Oberflachen sowie Verwendung formaldehydarmer Spanplatten kann die Formaldehydemission ...
R. Marutzky, L. Mehlhorn, W. Menzel
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Formaldehyde-free varnishing on stator core sheets to prevent formaldehyde emissions
2015 IEEE Electrical Insulation Conference (EIC), 2015Formaldehyde has been identified as a hazardous gas and a number of European countries have set limits on the tolerated concentrations of it in working areas. Alstom tested and analyzed the standard varnishes in use for the past 20 years and compared them to newly developed varnishes.
T. Klamt, E. Béchir
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The journal of adhesion, 2019
By using polycondensation → hydroxymethylation strategy, a novel wood adhesive, namely polyurea–formaldehyde resin (PolyUF) was designed and successfully synthesized.
Bengang Zhang +6 more
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By using polycondensation → hydroxymethylation strategy, a novel wood adhesive, namely polyurea–formaldehyde resin (PolyUF) was designed and successfully synthesized.
Bengang Zhang +6 more
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Journal of Applied Polymer Science, 2005
AbstractA modified urea–formaldehyde resin was synthesized by the condensation of urea and formaldehyde in the presence of varying proportions of casein up to 25% (w/w) of urea under alkaline conditions. All the prepared resins were characterized by free‐formaldehyde content, viscosity measurements, and number‐average molecular weight determination by ...
D. K. Raval, B. N. Narola, A. J. Patel
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AbstractA modified urea–formaldehyde resin was synthesized by the condensation of urea and formaldehyde in the presence of varying proportions of casein up to 25% (w/w) of urea under alkaline conditions. All the prepared resins were characterized by free‐formaldehyde content, viscosity measurements, and number‐average molecular weight determination by ...
D. K. Raval, B. N. Narola, A. J. Patel
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Melamine formaldehyde foam with reduced formaldehyde emission.
2020Method for lowering the formaldehyde emissions of melamine/formaldehyde polymer moldings, films or fibers by impregnating the melamine/formaldehyde polymer moldings, films or fibers with an aqueous solution of at least one formaldehyde scavenger.
Weisse, Alexander Sebastian +6 more
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Preparation of cured urea–formaldehyde resins of low formaldehyde emission
Journal of Applied Polymer Science, 1984Several polymers containing amino or amido groups and biuret were tested as additives to ureaformaldehyde (UF) resin in order to neutralize its inherent acidity and combine free formaldehyde released upon hydrolysis of cured UF polycondensate. Each modifier was incorporated to liquid methylolureas at weight ratios of 1:100, 2:100, and 3:100 prior to ...
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Reduction of formaldehyde emission from medium density fiberboard by chitosan as scavenger
The journal of adhesion, 2018Chitosan was used as environmentally friendly and bio-based scavenger for reducing the formaldehyde emission from medium density fiberboard. Using of chitosan powder showed better capacity of formaldehyde adsorption rather than the chitosan solution ...
H. Hassannejad +2 more
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Formaldehyde and VOCs emissions from bio-particleboards
Journal of Adhesion Science and Technology, 2013Formaldehyde and other volatile organic compounds (VOCs) emissions were determined from particleboards manufactured with natural adhesives. Thus, mimosa tannin with hexamine solution (T) and a blending of glyoxalated wheat straw lignin solution mixing with mimosa tannin and hexamine (TL) in 50/50 proportion were used as resins. These ones were compared
Navarrete, P. +7 more
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Formaldehyde Oxidation over Emission Control Catalysts
SAE Technical Paper Series, 2018<div class="section abstract"><div class="htmlview paragraph">SCR and PGM-based oxidation catalysts are highly active for formaldehyde (HCHO) oxidation and removal. When designing a catalyst system for emissions control on a natural gas firing engine, it can be necessary, under certain conditions, to account for the inhibition effect of ...
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Formaldehyde emission—Comparison of different standard methods
Atmospheric Environment, 2007Abstract The emission of formaldehyde is an important factor in the evaluation of the environmental and health effects of wood-based board materials. This article gives a comparison between commonly used European test methods: chamber method [EN 717-1, 2004.
Maria Risholm-Sundman +3 more
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