Property evaluation and structure analysis of polyurethane/epoxy graft interpenetrating polymer networks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F11%3A43865693" target="_blank" >RIV/70883521:28110/11:43865693 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/app.34070" target="_blank" >http://dx.doi.org/10.1002/app.34070</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/app.34070" target="_blank" >10.1002/app.34070</a>

Result language
angličtina
Original language name
Property evaluation and structure analysis of polyurethane/epoxy graft interpenetrating polymer networks
Original language description
Polyurethanes obtained from 4,4´-diphenylmethane diisocyanate (MDI) and polydiols with different molecular weights (polyethylene glycol and polyoxypropylene diols) were used as modifiers for diglycidyl ether of bisphenol A. Impact strength (IS), criticalstress intensity factor (KC), flexural strength and flexural strain at break were measured as a function of polyurethane (PUR) type and content. Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and infrared spectroscopy (FTIR) were employed for the structure and morphology analysis. It was found that the addition of polyurethane with an excess of isocyanate groups to epoxy resin resulted in the formation of a grafted interpenetrating polymer network structure. The mechanicalproperties of epoxy resin were improved with 5 and 10% PUR. Moreover, it was observed that composites containing PUR based on higher molecular weight (PUR 1002 and PUR 2002) with long flexible segments exhibited higher impact strength wh
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
—

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)