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Title: Migration of some plasticizers through cured novolac epoxy resin -polyamide hardener systems
Authors: Agrawal, J P
Khangaonkar, D G
Kulkarni, K S
Issue Date: Apr-1998
Publisher: NISCAIR-CSIR, India
Abstract: Four esters based on a homologous series of aliphatic acids and butanol has been synthesized and their structures have been confirmed with the help of IR, NMR and molecular weight. The diffusion coefficients (D) of these plasticizers to cured novolac epoxy resin sheets have been determined with the help of their migration at infinite time (M) and Fick's Second Law. The data indicate that D as well as. M decrease as the molecular weight increases from P-2 to P-S. Further, the calculated concentration profiles of these plasticizers at various depths of plane sheets of novolac epoxy resin have been calculated and compared with a commercial plasticizer, dioctyl adipate generally used in composite propellants.
Page(s): 58-64
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.05(2) [April 1998]

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