Solid freeform fabrication of epoxidized soybean oil/epoxy composites with di-, tri-, and polyethylene amine curing agents

Authors

  • Z. S. Liu,

    1. Oil Chemical Research, NCAUR, ARS, USDA, 1815 N. University Street, Peoria, Illinois 61604
    Search for more papers by this author
  • S. Z. Erhan,

    Corresponding author
    1. Oil Chemical Research, NCAUR, ARS, USDA, 1815 N. University Street, Peoria, Illinois 61604
    • Oil Chemical Research, NCAUR, ARS, USDA, 1815 N. University Street, Peoria, Illinois 61604
    Search for more papers by this author
  • P. D. Calvert

    1. Arizona Materials Laboratories, Department of Materials Science and Engineering, University of Arizona, 4715 E. Fort Lowell Road, Tucson, Arizona 85712
    Search for more papers by this author

  • Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by USDA implies no approval of the products to the exclusion of others that may also be suitable.

Abstract

Soybean oil/epoxy-based composites are prepared by solid freeform fabrication (SFF) methods. SFF methods built materials by the repetitive addition of thin layers. The mixture of epoxidized soybean oil and epoxy resin is modified with di-, tri-, or polyethylene amine gelling agent to solidify the materials until curing occurs. The high strength and stiffness composites are formed through fiber reinforcement. E-glass, carbon, and mineral fibers are used in the formulations. The type of fiber affects the properties of the composites. It was found that a combination of two types of fibers could be used to achieve higher strength and stiffness parts than can be obtained from a single fiber type. In addition, the effects of curing temperature, curing time, and fiber concentration on mechanical properties of composites are studied and reported. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 356–363, 2004

Ancillary