The H-NMR spectrum of the plugging material was measured by a nuclear magnetic resonance instrument, TMS was used as the internal standard, and deuterated chloroform was used as the solvent.
Using an MRI instrument to determine the H-NMR spectrum of the sealing material, TMS was used as the internal marker and chloroform was used as a solvent.
The H-NMR spectra of the plugging materials were determined by NMR. TMS was used as internal standard and deuterated chloroform was used as solvent.<br>