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Table 3: Results of Group 3 Testing

Table 3 provides the results of Group 3 testing. No significant differences were observed in Group 3 epoxy FTIR spectra. Glass spheres and talc were observed by PLM in FastSteel, Repair Express Epoxy Putty, J-B STIK, PC-METAL, and Leakstopper Steel Epoxy Putty. Talc and calcium magnesium carbonate were observed by PLM in EP-200 Epoxy Putty. Magnesium, silicon, sulfur, calcium, titanium, and iron were detected by XRF in all Group 3 epoxies. In addition, aluminum was weakly detected in all Group 3 epoxies but EP-200 Epoxy Putty. No significant differences were observed in Group 3 pyrograms.

Group 3 (Opaque Putty/Gray in Color) Results
  FastSteel Repair Express Epoxy Putty J-B STIK PC-METAL Leakstopper Steel Epoxy Putty EP-200 Epoxy Putty

FTIR

No Significant Differences in Spectra

PLM

Glass spheres and Talc

Talc and CaMg(CO3)2

XRD

Talc

Talc, Fe

Talc, SiO2, CaMg(CO3)2

XRF

Mg, Al*, Si, S, Ca, Ti, Fe

Mg, Al*, Si, S, Ca, Ti, Fe

Mg, Al*, Si, S, Ca, Ti, Fe

Mg, Al*, Si, S, Ca, Ti, Fe

Mg, Al*, Si, S, Ca, Ti, Fe

Mg, Si, S, Ca, Ti, Fe*

Pyr-GC-MS

No Significant Differences in Pyrograms

*Weak peak