Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 95: Issue 1
High pressure DSC of phenolformaldehyde moulding compounds
Authors:
Romana Korošec University of Ljubljana Faculty of Chemistry and Chemical Technology Aškerčeva 5 SI-1000 Ljubljana Slovenia

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,
Lea Mežnar Kolektor Pro d.o.o. Vojkova 10 5280 Idrija Slovenia

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, and
P. Bukovec University of Ljubljana Faculty of Chemistry and Chemical Technology Aškerčeva 5 SI-1000 Ljubljana Slovenia

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Pages:
235–240
Online Publication Date:
20 Sep 2008
Publication Date:
01 Jan 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8916-8
Keywords:
composite material; curing reaction; hexamethylenetetramine; high pressure DSC (HP DSC); novolac; phenolformaldehyde resin; thermoset
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Abstract  

The influence of pressure on the polycondensation reaction between novolac resin (N) present in commercially available moulding compounds and hexamethylenetetramine (HMTA) was studied up to 80 bars under air and in an inert atmosphere. For a low HMTA content (N/HMTA=98/2 mass ratio) high pressure enables the detection of two successive curing reactions. With increasing HMTA content the peak due to the first curing reaction becomes less pronounced at high pressure, while the enthalpy of the second increases. In an inert atmosphere both curing reactions are well observable even at ambient pressure and for lower HMTA content take place at lower temperatures, as expected. For the sample with N/HMTA=98/2 the curing reaction was followed using TG-MS.

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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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