Item request has been placed! ×
Item request cannot be made. ×
loading  Processing Request

New improved thermosets obtained from DGEBA and a hyperbranched poly(ester-amide)

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
Read More Add to Saved list
  • Additional Information
    • Contributors:
      Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
    • Publication Information:
      Elsevier BV, 2009.
    • Publication Date:
      2009
    • Abstract:
      The influence on the curing process of a commercial hydroxy-functionalized hyperbranched poly(ester-amide) (HBP) Hybrane® S1200 on diglycidylether of bisphenol A (DGEBA) was studied. By Differential Scanning Calorimetry (DSC) and Fourier Transform Infrared Spectroscopy (FTIR) the curing reaction was studied and the covalent incorporation of the modifier in the matrix was proved. By Thermomechanical Analysis (TMA) the reduction of the contraction after gelation on changing the S1200 proportion was observed. The incorporation of S1200 increased the glass transition temperature (Tg) and reduced the overall shrinkage, specially after gelation. The modified materials were more thermally degradable than neat DGEBA thermosets. Thermal expansion coefficient, Young's modulus, impact strength and microhardness were improved without compromising the thermomechanical characteristics. The water uptake behaviour was also evaluated.
    • File Description:
      application/pdf
    • ISSN:
      0032-3861
    • Accession Number:
      10.1016/j.polymer.2009.09.024
    • Rights:
      Elsevier TDM
      CC BY NC ND
    • Accession Number:
      edsair.doi.dedup.....d8e74711c68a965dee84aa962fc17ec2