Results 181 to 190 of about 3,527 (200)

Low-Volatility Acetals to Upgrade the Performance of Melamine-Urea-Formaldehyde Wood Adhesive Resins

Journal of Applied Polymer Science, 2004
Abstract1,1,2,2‐Tetramethoxyethane (TME), a high boiling point acetal derived from glyoxol, lhas been shown to upgrade the performance of melamine‐urea‐formaldehyde (MUF) and some UF resins used for wood adhesives. This affords the possibility of decreasing the percentage of resin used in the preparation of wood panels without volatilizing the TME ...
ZANETTI, MICHELA, PIZZI A, FAUCHER P.
openaire   +3 more sources

Bonding performance of melamine-urea–formaldehyde and phenol-resorcinol–formaldehyde adhesive glulams at elevated temperatures

International Journal of Adhesion and Adhesives, 2020
Abstract To better understand the bonding performance of glued laminated timbers (i.e., glulams) during fires, phenol–resorcinol–formaldehyde (PRF) and melamine–urea–formaldehyde (MUF) adhesives were used to investigate the effects of elevated temperatures on the glueline shear strength. The wood failure mode was observed to study the heat resistance
Jian Liu, Kong Yue, Liqin Xu, Jinhao Wu, Zhangjing Chen, Lu Wang, Weiqing Liu, Weidong Lu   +7 more
openaire   +1 more source

Utilization of hydrophilic/hydrophobic hyperbranched poly(amidoamine)s as additives for melamine urea formaldehyde adhesives

Polymer Composites, 2014
Hyperbranched poly(amidoamine)s (PAMAMs), exhibiting various levels of hydrophilicity, were used as modifiers for melamine urea formaldehyde (MUF) adhesives. The modification was achieved either with or at expense of sodium hydroxide during the last pH adjustment.
Siham Amirou, Jizhi Zhang, H.A. Essawy, A. Pizzi, A. Zerizer, J. Li, L. Delmotte   +6 more
openaire   +1 more source

Bonding performance of melamine-urea-formaldehyde and phenol-resorcinol-formaldehyde adhesives in interior grade glulam

Journal of Adhesion Science and Technology, 2017
AbstractWood moisture content (MC) affects the glued laminated beam (glulam) bonding strength. Selected adhesives were Phenol-Resorcinol-Formaldehyde (PRF) and Melamine-Urea-Formaldehyde (MUF) adhesives with 1, 1.5 and 2% (w/w) carboxymethyl cellulose (CMC) formic acid solutions.
Jun Zhou, Kong Yue, Weidong Lu, Zhangjing Chen, Xiucai Cheng, Weiqing Liu, Chong Jia, Lijuan Tang   +7 more
openaire   +1 more source

Acetals‐induced strength increase of melamine–urea–formaldehyde (MUF) polycondensation adhesives. II. Solubility and colloidal state disruption

Journal of Applied Polymer Science, 2002
AbstractThe strength improvement induced by addition of acetals such as methylal and ethylal in melamine–urea–formaldehyde (MUF) resins could be mostly ascribed to the increased effectiveness and participation of the melamine to resin cross‐linking.
ZANETTI, MICHELA, A. PIZZI, M. BEAUJEAN, H. PASCH, K. RODE, P. DALET   +5 more
openaire   +1 more source

Studying possibility of using melamine-urea-formaldehyde resin-based adhesives with separately applied components in wooden structures

Polymer Science. Series D, 2010
Complex accelerated testing results on the strength and stability of glued joints obtained by separate applications of binder and hardener to glued surfaces in wooden structures are presented. The obtained data confirm the possibility of switching the wooden structure industry to more manufacturable melamineurea-formaldehyde resin-based adhesives with ...
M. I. Molchanov, L. M. Koval’chuk
openaire   +1 more source

Combined FTIR spectroscopy and rheology for measuring melamine urea formaldehyde (MUF) adhesive curing as influenced by different wood extracts

European Journal of Wood and Wood Products, 2019
Reliable wood-adhesive bonds are crucial for future wood-biomass utilization. This ongoing research aims at systematically investigating interactions between adhesives and extractable wood constituents. The simultaneous examination of the progress of chemical reactions and changes in rheological properties of both pure adhesives and adhesive-extract ...
Merve Özparpucu, Theresa Wolfrum, Elisabeth Windeisen-Holzhauser, Markus Knorz, Klaus Richter   +4 more
openaire   +1 more source

Poly(amidoamine)s dendrimers of different generations as components of melamine urea formaldehyde (MUF) adhesives used for particleboards production: what are the positive implications?

Journal of Polymer Research, 2013
Poly(amidoamine)s dendrimers (PAMAM)s of different generations (Gn, where n = 1–3) were prepared via Michael addition/amidation reactions following a well-established procedure and their molecular weights were determined using matrix-assisted laser desorption ionization-time of flight (MALDI-TOF).
Zhou, X., Essawy, H. A., Pizzi, Antonio, Li, Xiaogai, Pasch, H., Pretorius, Nadine, Du, G.   +6 more
openaire   +2 more sources

First/second generation of dendritic ester-co-aldehyde-terminated poly(amidoamine) as modifying components of melamine urea formaldehyde (MUF) adhesives: subsequent use in particleboards production

Journal of Polymer Research, 2014
Particleboards production, which depends mainly on thermoset resins, e.g., such as melamine urea formaldehyde (MUF) and urea formaldehyde (UF), can result in subsequent liberation of the carcinogenic formaldehyde of the panel in service. This situation needs the substitution of formaldehyde with less active aldehydes.
X. Zhou, H. A. Essawy, A. Pizzi, J. Zhang, X. Li, G. Du   +5 more
openaire   +1 more source

Preparation and characterization of a melamine-urea-glyoxal resin and its modified soybean adhesive

International Journal of Adhesion and Adhesives, 2021
Yufei Kan, Yumei Bai, Zhenhua Gao
exaly