Polypropylene needle felt

Polypropylene has good wear resistance and high elastic recovery rate. When the load increases, the creep elongation of polypropylene is greater than that of polyester polypropylene, which can withstand a temperature of 90 ℃. The chemical properties of polypropylene are excellent among all chemical fibers, and high-temperature filter bags are both acid and alkali resistant. It has good resistance to other acids except oxidizing acids such as Chlorosulfuric acid and nitric acid. Strong alkali resistance, except for concentrated caustic soda, other alkalis have no effect on it and are also resistant to general organic solvents. It has good electrical insulation performance, but polypropylene fibers are prone to decomposition under the influence of light, heat, and other factors. Polypropylene is an excellent thermoplastic fiber, and polypropylene felt is often used in low-temperature pulse filter bags in smelting plants and pulse filter bags in chemical and pharmaceutical plants. Polypropylene is specifically designed for damp environments.

In addition to some advantages of ordinary needle punched filter felt, polypropylene needle punched felt is generally used in situations with flue gas temperature below 100 ℃ and high acidity or alkalinity, or in liquid-solid separation fields with high acidity or alkalinity, due to its superior acid resistance, alkalinity, and lower softening point compared to polyester fiber.

In the field of liquid-solid separation, polypropylene needle punched filter felt is usually used in conjunction with liquid-solid separation equipment such as plate and frame filters, vacuum suction filters, belt filters, and centrifugal filters. Not only does it have the characteristics of good dimensional stability, high strength, and small elongation, but it also has unique advantages such as low vacuum resistance, energy conservation, and easy cleaning due to its smooth surface, pores, and high breathability. In industries such as mineral processing, coal preparation, petroleum, and chemical engineering, where it is necessary to filter small particles and ensure fine filtration, polypropylene needle punched filter felt has far superior performance than traditional woven filter materials.

Polypropylene needle punched filter felt is generally made of 3D or 6D polypropylene short fibers, woven with high-strength silk to enhance the base fabric, and processed through post treatment processes such as needle reinforcement, calendering, and heat setting.

Polypropylene needle punched filter felt is mainly used in liquid-solid separation fields in industries such as metallurgy, mining, petroleum, chemical industry, chemical fiber, medicine, food, etc.