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 cross breaking (CD) strength of samples was tested by an electronic fabrics strength tester (YG026C, Changzhou textile instrument Co., China). The gauge length and extension rate were set as 200mm and 100mm/min according to the testing method for nonwovens-Part 3: Determination of tensile strength and elongation, MOD (ISO 9073-3), respectively. The 300×50 mm strips cut from PPS-based bag filter materials were adopted to operate for related measurement. Every sample was tested for 5 times and average values were used to illustrate the changes of transverse strength of bag filters.