TY - JOUR
T1 - Composites based on bimodal vinyl ester resins with low hazardous air pollutant contents
AU - La Scala, John J.
AU - Logan, Matthew S.
AU - Sands, James M.
AU - Palmese, Giuseppe R.
N1 - Funding Information:
The authors would like to thank the Ashland Company for providing the Derakane resins, SERDP PP-1271 and ESTCP WP-0617 for funding, and ARL cooperative agreement DAAD 19-02-2-0010 for enabling cooperative research with Drexel University.
PY - 2008/6
Y1 - 2008/6
N2 - Vinyl ester (VE) resins with a bimodal distribution of molecular weights were prepared via methacrylation of epoxy monomers. Bimodal VE resins and neat polymers had viscosities and mechanical properties similar to that of commercial resins. E-glass composites were prepared and also found to have similar mechanical and thermo-mechanical properties relative to composites fabricated using commercial resins. However, the fracture toughness of the bimodal resins was superior to that of the commercial resins partially as a result of increased molecular relaxations that were manifested in a broader glass transition. Overall, bimodal resins allow for the use of low styrene content (∼33 wt%), while maintaining excellent thermal, mechanical, and fracture properties for the neat resins and composites.
AB - Vinyl ester (VE) resins with a bimodal distribution of molecular weights were prepared via methacrylation of epoxy monomers. Bimodal VE resins and neat polymers had viscosities and mechanical properties similar to that of commercial resins. E-glass composites were prepared and also found to have similar mechanical and thermo-mechanical properties relative to composites fabricated using commercial resins. However, the fracture toughness of the bimodal resins was superior to that of the commercial resins partially as a result of increased molecular relaxations that were manifested in a broader glass transition. Overall, bimodal resins allow for the use of low styrene content (∼33 wt%), while maintaining excellent thermal, mechanical, and fracture properties for the neat resins and composites.
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U2 - 10.1016/j.compscitech.2008.01.003
DO - 10.1016/j.compscitech.2008.01.003
M3 - Article
AN - SCOPUS:42249090196
SN - 0266-3538
VL - 68
SP - 1869
EP - 1876
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 7-8
ER -