ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A series of nadimidized 1-[(dialkoxyphosphinyl1)methyl]-2,4- and -2,6-diaminobenzenes was prepared and polymerized thermally to yield highly crosslinked fire-resistant laminating resins. Bisnadimides were characterized by elemental analysis and Fourier-transform-infrared (FT-IR) and proton nuclear magnetic resonance (1H-NMR) spectroscopy. Curing behavior of the polymer precursors was studied by differential scanning calorimetry (DSC). Char yield of polymers at 700°C was 64-69% and 30-60% in nitrogen and air atmospheres, respectively. The pyrolysis behavior of some bisnadimides was investigated by gas chromatography-mass spectroscopy (GC-MS). Cyclopentadiene was evolved by retrograde Diels-Alder reaction during processing, but most was captured by copolymerization. The fire-resistance of some polymers was evaluated by determining their limiting oxygen index and smoke evolution.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1984.170221164
