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1\u3001 Classification and characteristics of filter cloth materials
Polyester (PET)
Advantages: Acid resistance (pH 3-9), weak alkali resistance, excellent wear resistance (second only to nylon), temperature resistance of 120-150 \u2103 57.
Disadvantages: Not resistant to strong alkali (easily hydrolyzed), poor conductivity.
Application: High temperature, acidic working conditions (such as chemical and metallurgical) 78.
Polypropylene (PP)
Advantages: Strong acid and alkali resistance (pH 0-14), low density (0.905g\/cm \u00b3), strong corrosion resistance.
Disadvantages: Poor temperature resistance (\u2264 90 \u2103), not resistant to oxygenated chlorinated solvents and low temperatures.
Application: Corrosive environments (such as wastewater treatment, pharmaceuticals) 56.
Nylon (PA)
Advantages: The strongest wear resistance and 35% resistance to weak acids and strong alkalis.
Disadvantages: Weak acid resistance and easy softening at high temperatures.
Application: High wear scenarios (such as mining, mechanical processing) 3.
Cotton filter cloth
Advantages: Natural material, good breathability.
Disadvantages: Acid and alkali resistance, poor temperature resistance, and easy corrosion.
Application: Low corrosion filtration in food, pharmaceutical and other fields.
2\u3001 Naming rules for filter cloth models
Universal Naming Logic
Material code: Polyester (such as 621, 3927), Polypropylene (such as 750 series), Nylon (such as 6533) 48.
Parameter combination: including information such as fracture strength, latitude and longitude density (e.g. polyester 621 model parameters: fracture strength 3026\/2288 N\/5 \u00d7 20cm) 8.
Common Model Examples
Polypropylene series: 750A\/B\/AB (strong corrosion resistance, suitable for chemical and metallurgical industries) 46.
Polyester series: 621 (high breathability, used for plate and frame filter press), 3927 (short fiber filter cloth, good particle retention) 18.
Nylon series: 6533 (high wear resistance, commonly used in the mining industry)<\/p>\n\n\n\n
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