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Structural and Thermal Characterisation of Nadimide Resins

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Abstract

A series of hexachloronadimides containing phosphine oxide in the backbone were synthesized by the reaction of bis(3-amino phenyl) methyl phosphine oxide (BAP) with pyromellitic dianhydride (PMDA)/3,3’,4,4’-benzophenone tetracarboxylic acid dianhydride (BTDA)/2,2-bis(3,4-dicarboxy phenyl) hexafluoropropane dianhydride (6F) and hexachloronadic anhydride in glacial acetic acid/acetone.

Structural characterisation of the resins was carried out by infrared, nuclear magnetic resonance spectroscopy and elemental analysis. Thermal characterisation of uncured resin was done by differential scanning calorimetry and thermogravimetric analysis. The decomposition temperature of uncured resins were above 310±10°C with T max 330±10°C in nitrogen atmosphere. Char yield at 800°C ranged from 37–42%.

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Authors and Affiliations

  1. Defence Materials and Stores Research and Development Establishment, DMSRDE P.O., G.T. Road, Kanpur, 208 013, India

    S. Alam, L. D. Kandpal & G. N. Mathur

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  1. S. Alam
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  2. L. D. Kandpal
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  3. G. N. Mathur
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Alam, S., Kandpal, L.D. & Mathur, G.N. Structural and Thermal Characterisation of Nadimide Resins. Journal of Thermal Analysis and Calorimetry 64, 487–494 (2001). https://doi.org/10.1023/A:1011518211321

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