Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 64: Issue 2
Characterization of Rubber Epoxy Blends by Thermal Analysis
Authors:
V. Nigam Defence Materials and Stores Research and Development Establishment, DMSRDE P.O. G.T. Road Kanpur 208 013 India G.T. Road Kanpur 208 013 India

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

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

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Pages:
521–527
Online Publication Date:
02 Nov 2004
Publication Date:
01 May 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1011586715864
Keywords:
carboxy terminated butadiene-co-acrylonitrile rubber; DMA; DSC; epoxy cresol novolac resin; TG
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Abstract  

Differential scanning calorimetry (DSC), thermogravimetric analysis (TG) and dynamic mechanical analysis (DMA) of the blends ofepoxy cresol novolac (ECN) resin toughened with liquid carboxy terminated butadiene-co-acrylonitrile (CTBN) rubber have been carried out. Exothermal heat of reaction (ΔH) due to crosslinking of the resin in presence of diaminodiphenyl methane(DDM, as amine hardener) showed a decreasing trend with increasing rubber concentration. Enhancements of thermal stability as well as lower percentage mass loss of the epoxy-rubber blends with increasing rubber concentration have been observed in TG. Dynamic mechanical properties reflected a monotonic decrease in the storage modulus (E′) with increasing rubber content in the blends. The loss modulus (E″) and the loss tangent(tanδ) values, however, showed an increasing trend with rise of the temperature up to a maximum (peak) followed by a gradual fall in both cases. Addition of 10 mass% of CTBN resulted maximum E″ and tanδ.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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