Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F13%3A43870008" target="_blank" >RIV/70883521:28610/13:43870008 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28110/13:43870008
Result on the web
<a href="http://jtc.sagepub.com/content/26/10/1364.full.pdf+html" target="_blank" >http://jtc.sagepub.com/content/26/10/1364.full.pdf+html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1177/0892705712439570" target="_blank" >10.1177/0892705712439570</a>
Alternative languages
Result language
angličtina
Original language name
Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks
Original language description
The present work investigates the effect of epoxy resin (EP) modification with polyurethanes (PURs) based on polyethylene glycol and two different diisocyanates: 4,4-diphenylmethane diisocyanate (MDI) and 2,4-toluene diisocyanate (TDI). The impact strength of the material based on 15 wt% PUR with TDI was enhanced by 130%, while the critical stress intensity factor and the flexural strength of epoxy composition based on 5 wt% PUR with MDI increased by approximately 140% in comparison with unmodified EP.Fourier transform infrared spectroscopy confirmed the occurrence of chemical reaction between the hydroxyl groups of EP and isocyanate groups of PUR, explaining the improvement in the mechanical properties of EP. Moreover, scanning electron micrographs showed a rough surface with plastic yielding and several microcracks in the compositions containing TDI-based PUR and deformed leaf-like morphology with more elongated structure for the EP modified with MDI-based PUR.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/ED2.1.00%2F03.0111" target="_blank" >ED2.1.00/03.0111: Centre of Polymer Systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermoplastic Composite Materials
ISSN
0892-7057
e-ISSN
—
Volume of the periodical
26
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
1364-1376
UT code for WoS article
000329489500003
EID of the result in the Scopus database
—