PPS-PTFE composite filter bags, commonly used dust removal materials in high-temperature environments, are widely applied in complex environments such as coal-fired power plants, waste incineration plants, cement kiln tails, and the chemical industry due to their excellent high-temperature resistance, corrosion resistance, and stable filtration performance. Under these high-temperature, oxygen-containing flue gas conditions, the oxidation resistance of the filter bag material directly affects its operational stability and overall service life, thus becoming an important indicator for evaluating filter bag quality.

PPS fibers themselves possess strong high-temperature resistance, but in environments with high oxygen concentrations or flue gas temperatures exceeding 160°C, oxidation reactions easily occur, leading to damage to the fiber chain structure and resulting in hardening, embrittlement, or decreased strength. To enhance the material's oxidation resistance, the PTFE coating layer plays a crucial role in the composite filter bag. PTFE has extremely low surface energy and excellent chemical inertness, effectively isolating oxygen and corrosive components from erosion of the PPS substrate, forming a stable protective barrier.

The strength of oxidation resistance not only affects the durability of the filter bag but also directly impacts filtration efficiency. When filter bags oxidize and harden, their permeability decreases, leading to increased resistance, higher energy consumption, and even filter media cracking, causing dust leakage. PPS PTFE composite filter bags, with their high oxidation resistance, maintain flexibility and structural integrity during long-term operation, ensuring stable flue gas filtration and improving the overall operating efficiency of the dust collector.

Furthermore, excellent oxidation resistance extends the filter bag replacement cycle, reducing maintenance costs. In highly corrosive and high-oxygen environments such as waste incineration and chemical exhaust gas treatment, ordinary filter bags may only last a year or even less. PPS PTFE composite filter bags, thanks to their antioxidant layer, typically achieve a longer service life, significantly reducing downtime and consumable expenses, resulting in greater economic benefits for enterprises.

Overall, the oxidation resistance of PPS PTFE composite filter bags is one of the core factors affecting their service life. By improving the chemical stability of the material, it is possible to ensure that the filter bags maintain high efficiency and stable operation under harsh conditions, providing a more reliable guarantee for environmental dust removal systems.