Note: using, partial failure and complete failure of the status of bag
filter were defined as failure rate of that below 3%, 3-30% and above
30%, respectively.
The functional structure evolutions of PPS-based bag filter materials
under the practical environments were detected by a FTIR spectrometer
(WQF-510, Beijing Rayleigh Analytical Instrument Co., China) equipping
with a single reflection attenuated total reflectance (ATR, PIKE,
America) accessory. The spectral resolution of 4 cm-1,
the range of 4000-400 cm-1 and scan times of 32 were
adopted at ambient temperature. At the same time, the melting points of
above samples were monitored by a thermal analyzer system (ZCT-B,
Beijing JYGK Instrument Co., China). The samples were heated from 100 to
400 ℃ with a constant ramping rate of 10 ℃/min at air atmosphere.
Besides, the samples were sealed previously into aluminum pans with
approximately 10 mg before measuring.
Table
3. Sample labels and related parameters under the loading units above
300 MW.