High Temperature PTFE (polytetrafluoroethylene) Fiberglass Filter Fabric is a special filter material widely used for gas filtration in high temperature environments. PTFE is a high-performance plastic with extremely high temperature resistance, chemical stability and corrosion resistance, while glass fiber provides good mechanical strength and stability. This composite material combines the advantages of both to form a filter material that is very suitable for high temperature and harsh environments.
Basic characteristics
High temperature resistance
PTFE fiberglass filter cloth has very good high temperature resistance and can usually withstand temperatures ranging from 260°C to 300°C (some special materials can reach higher temperatures), and can maintain a stable filtering effect even at high temperatures.
Chemical stability
PTFE itself has excellent chemical stability and has good corrosion resistance to most acids, alkalis, solvents and oxidants. Therefore, this filter cloth can work stably in chemical environments such as strong acids, strong alkalis or organic solvents, and is particularly suitable for handling corrosive gases.
Good moisture resistance
PTFE has low surface tension, excellent waterproof performance, and will not be affected by moisture. The filtration performance is suitable for environments with high humidity.
High filtration efficiency
Due to the combination of its fiber structure and PTFE coating, the filter cloth can effectively block tiny particles and has high filtration efficiency. It is often used for dust control and air purification.
Anti-aging and UV resistance
PTFE has very good anti-aging and UV resistance, so it can maintain its performance in long-term use and is not easily affected by environmental factors.
Tensile strength and wear resistance
Due to the presence of glass fibers, the filter cloth has high mechanical strength and wear resistance, and is suitable for long-term continuous work.
Application scenarios of High Temperature PTFE Fiberglass Filter Fabric
Flue gas desulfurization and denitrification (flue gas treatment)
In coal-fired power plants, steel plants, cement plants and other industries, the exhaust gas contains a large amount of harmful particles and chemicals. Using high-temperature PTFE glass fiber filter cloth for flue gas purification is a common application. The filter cloth can efficiently filter out harmful substances such as dust and acidic gases in the flue gas.
Industrial dust removal
It is used for industrial waste gas dust removal in metallurgy, chemical industry, building materials, mining and other industries, especially in occasions where high temperature, high humidity or corrosive gases need to be treated.
Environmental protection industry
High-temperature PTFE glass fiber filter cloth is widely used in the field of environmental protection, especially in the key components of waste gas purification and environmental protection equipment (such as bag dust collectors, air purifiers, etc.).
Petrochemical and chemical reaction engineering
The waste gas treatment in the process of petroleum refining and chemical reaction has high requirements for temperature and chemical properties. This type of filter cloth can effectively resist high temperature and highly corrosive environment.
Food and pharmaceutical industry
In the high-temperature filtration process of some food and pharmaceutical industries, the use of this filter cloth can ensure the purity and safety of the filtration and avoid affecting the quality of the final product due to the inability of the filter material to adapt to the environment.
Typical parameters
Temperature range: maximum operating temperature 260°C (some special products can withstand up to 300°C or above)
Short-term high temperature tolerance: can withstand 350°C-400°C (short time)
Filtration accuracy: can provide different precision filtering effects according to different needs, generally between 1-5 microns, and even up to 0.5 microns or less.
Weight: The weight of general filter cloth is 400-1200g/m². Choose the appropriate weight according to the application scenario.
Gas permeability: The air permeability of high-temperature PTFE glass fiber filter cloth is usually between 10-50 m³/m²·min.
Tensile strength: The tensile strength is generally 300-800 N/5cm, depending on the specific product specifications.
Corrosion resistance: It can resist most acid and alkaline chemicals, especially suitable for filtering acidic or alkaline gases.
Surface treatment: Surface treatment of PTFE coating, such as PTFE coating, membrane layer, coating, etc., can further enhance the waterproof, oil-proof and corrosion-resistant properties.
Thickness: Usually 0.5mm-2mm, adjusted according to actual needs.