Polymer Engineering and Science, February 1st, 2003
In this paper, the chemorheological and dynamic mechanical behavior of melamine-formaldehyde (MF) resins of four different formaldehyde/melamine (F/M) molar ratios (1.25, 1.5 1.75 and 2.00) are Investigated. ME resins polymerize via a polycondensation reaction involving formation of up to 10 wt% of [H.sub.2]O on cure. This typically results in rapid and extensive foaming of the resin when it is cured under atmospheric pressure. Experimental adaptation for the foaming behavior of ME resins is used to gather rheological Information concerning the curing kinetics and the mechanical response of ne...
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