Results 141 to 150 of about 208,699 (163)
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Colloidal aggregation of MUF polycondensation resins: Formulation influence and storage stability
Journal of Applied Polymer Science, 2003AbstractColloidal particle formation followed by their clustering has been shown to be the normal way of ageing of aminoplastic resins, in particular melamine–urea–formaldehyde (MUF) resins. Ageing (or further advancement of the resin by other means such as longer condensation times) causes whitening of the resin.
Zanetti, Michela, Pizzi, Antonio
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Time delay effect in TMA methods for MUF resins testing
Holz als Roh- und Werkstoff, 2002Materials and methods Melamine-urea-formaldehyde (MUF) resins of molar ratios variable between 1:1.2 and 1:1.9 to which was added 1.5% ammonium sulphate hardener were tested by thermomechanical analysis (TMA) on sandwich joints of beech wood forming specimens of 21 · 6 · 1.2 mm dimension in three points bending and at a constant heating rate of 10 C ...
Zanetti, Michela, Pizzi, Antonio
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A13C-NMR analysis method for MUF and MF resin strength and formaldehyde emission
Journal of Applied Polymer Science, 1996SYNOPSIS A method based on the use of W-NMR relative peak intensity ratios for chemical groups known to contribute to melamine-urea-formaldehyde (MUF) and melamine-formaldehyde (MF) resin strength and formaldehyde emission is presented. The method relates results obtained by 13C-NMR analysis of liquid MUF and MF resins with their strength and ...
L. A. Panangama, A. Pizzi
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Influence of preparation parameters on the CHT curing diagrams of MUF polycondensation resins
Journal of Applied Polymer Science, 2001AbstractLignocellulosic substrates such as wood have been found to have a marked modifying influence on both lower‐temperature and higher‐temperature zones of TTT and CHT diagrams during hardening of formaldehyde‐based polycondensates. While the modifying influence of the substrate has been described, the modifying influence of some of the most ...
UZIELLI, LUCA, M. Properzi, A. Pizzi
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Acetals-induced strength increases and lower resin content in MUF and PE wood adhesives
Holz als Roh- und Werkstoff, 2003International ...
Pizzi, Antonio +3 more
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Poor performance of PMUF adhesives prepared by final coreaction of a MUF with a PF resin
Holz als Roh- und Werkstoff, 1996Investigation of the performances of phenol-melamine-urea-formaldehyde resins prepared by final coreaction of a MUF with a PF resin. These resins were used to prepare plywood glue-mixes.
M. Prestifilippo, A. Pizzi
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Evaluating the wettability of MUF resins and pMDI on two different OSB raw materials
European Journal of Wood and Wood Products, 2013In this paper, the wettability of two different wood species as raw material for Oriented Strand Board (OSB) is analyzed. One species is pine, a common material for the production of OSB; the other species, poplar, and especially hybrid poplar, is newly used in OSB and might require a modified board production process compared to pine.
Jörn Rathke, Gerhard Sinn
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Journal of Applied Polymer Science, 2003
AbstractA new sulfonated melamine–urea–formaldehyde (MUF) resin of relatively low melamine content, prepared according to a sequential formulation, has been shown to be highly effective when coupled with different natural vegetable tannins to produce leather with the same good characteristics of leather prepared with chrome salts.
Simon, Caroline, Pizzi, A.
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AbstractA new sulfonated melamine–urea–formaldehyde (MUF) resin of relatively low melamine content, prepared according to a sequential formulation, has been shown to be highly effective when coupled with different natural vegetable tannins to produce leather with the same good characteristics of leather prepared with chrome salts.
Simon, Caroline, Pizzi, A.
openaire +2 more sources