Mechanical and thermal properties of cationic ring-opening o-cresol formaldehyde epoxy/polyurethane acrylate composites enhanced by reducing graphene oxide

Polyurethane acrylate (PUA) and o -cresol formaldehyde epoxy resin ( o -CFER) is synthesized. The PUA/ o -CFER glass fiber-reinforced composites cured by free radical/cationic ring-opening reaction are modified by the reducing graphene oxide (r-GO). Effect of r-GO on the thermal and mechanical prope...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2016-08, Vol.73 (8), p.2227-2244
Main Authors: Han, Hongzhe, Jiang, Chunyan, Huo, Li, Gao, Jungang
Format: Article
Language:English
Subjects:
Bisphenol A
Cations
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Curing
Epoxy resins
Fiber composites
Fiber reinforced polymers
Formaldehyde
Fourier transforms
Free radicals
Glass fiber reinforced plastics
Glass transition temperature
Glass-epoxy composites
Graphene
Impact strength
Mechanical properties
Molecular structure
Organic Chemistry
Original Paper
Physical Chemistry
Polymer Sciences
Polymerization
Polymers
Polyurethane resins
Potassium
Ring opening
Soft and Granular Matter
Thermal degradation
Thermal stability
Thermodynamic properties
Vacuum distillation
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Summary:Polyurethane acrylate (PUA) and o -cresol formaldehyde epoxy resin ( o -CFER) is synthesized. The PUA/ o -CFER glass fiber-reinforced composites cured by free radical/cationic ring-opening reaction are modified by the reducing graphene oxide (r-GO). Effect of r-GO on the thermal and mechanical properties of PUA/ o -CFER glass fiber-reinforced composites are characterized by FTIR, DMA and TGA. The result of FTIR shows that the system has cured completely. DMA analysis indicates that this system has better compatibility, and the glass transition temperature ( T g ) decreases with increasing r-GO content. TGA analysis shows that the initial thermal degradation temperature ( T id ) and activation energy ( E a ) enhance 13.1 °C and 3.12 kJ/mol, respectively. The tensile and impact strength of glass fiber-reinforced composites are approximately 50 and 60 % higher than those without r-GO. It is shown that the r-GO can enhance the mechanical properties and thermal stability of composites.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-016-1605-7