DGEBF

AcronymDefinition
DGEBFDi-Glycidyl Ether of Bisphenol F
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Figure 9 shows typical load-deflection responses of neat DGEBF, DGEBF/P-MWCNT, DGEBF/A-MWCNT, and DGEBF/D-MWCNT composites.
The fracture surfaces of the neat DGEBF and the DGEBF/DMWCNT composite were examined using SEM after the [K.sub.IC] tests, and the results are shown in Fig.
Bisphenol F epoxy resin (DGEBF) with an epoxy equivalent weight (EEW) of 170 g/mol was kindly supplied by Yueyang Chemical Co., China.
The phosphorous-containing epoxy resin was synthesized through the reaction of DOPO and DGEBF according to Scheme 1.
The P-DGEBF and the control DGEBF were cured with DDS.
The epoxy monomer is a diglycidyl ether of bisphenol F (DGEBF), PY306 supplied by Huntsman/Vantico.
Component/code 0 wt% 5 wt% 10 wt% 15 wt% 20 wt% H311 H311 H311 H311 H311 DGEBF 87.49 83.11 78.74 74.37 69.99 DETDA 12.51 11.89 11.26 10.63 10.01 H311 0 5 10 15 20
The epoxy resins used were a diglycidyl ether of bisphenol F (DGEBF), (PY306 supplied by Vantico, Basel, Switzerland) and a triglycidyl p-amino phenol (MY0510 supplied by Vantico).
Component/ Sample PY0 PY5 PY10 PY15 PY20 PY20MY PY30MY DGEBF 78.61 74.68 70.75 66.82 62.89 49.47 4286 TGAP 0 0 0 0 0 12.37 18.37 DETDA 21.39 20.32 19.25 18.18 17.11 18.16 19.76 PCL 0 5.00 10.00 15.00 20.00 20.00 20.00 TABLE 2.
Figure 2 shows the storage modulus at 30 [degrees]C, which is measured by DMA, of the DGEBF and the biobased neat epoxies cured with the anhydride curing agent, MTHPA.
Figure 2 also shows the glass transition temperature, which is assigned as the peak position of loss factor curve measured by DMA, of the DGEBF and the biobased neat epoxies cured with MTHPA.
Note: Table made from bar graph Table 1 Physical Properties of Epoxide Resins at Room Temperature (6) Resin formulation Gel time RAL * (parts by weight) and designation DGEBF PPGDE DETD temperature RAL-227 100 0 24 15 h at 70[degrees]C RAL-228 80 20 24 15 h at 70[degrees]C RAL-230 60 40 21 15 h at 70[degrees]C RAL-231 50 50 20 15 h at 70[degrees]C Curing time Young's Main glass RAL * and Modulus transition designation temperature (GPa) temperature RAL-227 12 h at 130[degrees]C 3.0 127[degrees]C RAL-228 12 h at 130[degrees]C 2.9 94[degrees]C RAL-230 12 h at 130[degrees]C 2.6 63[degrees]C RAL-231 12 h at 130[degrees]C 2.0 46[degrees]C * RAL (Rutherford Appleton Laboratory) series resin system.