Glass fiber and P84 fiber composite needle felt domestic leading domestic level

The "glass fiber and P84 fiber composite needled felt developed by the seventh research institute of Sinoma Science and Technology Nanjing Fiberglass Institute has achieved success in Nanjing. This product is used as the latest generation of dust filter media, mainly using about 90% glass fiber and 10% The P84 fiber is a composite of left and right P84 fibers, which can be widely used in filter materials for dust removal equipment in industries such as steel and cement, and its service life and performance are greatly superior to those of other types of filter materials. Leading the domestic market.
According to reports, ordinary glass fibers are circular cross-section fibers, a rod-like, smooth fiber surface, can not be naturally bent, resulting in the cohesion between the fibers is almost zero. Therefore, the filter bag made of glass fiber can easily cause the glass fiber to move and cause damage when the filtering wind speed is too large. The P84 fiber is a fiber with an irregular blade shape in cross section, and its use temperature matches that of glass fiber, which is about 260°C. Its leaf-like cross section makes P84 fiber has two major advantages: First, the fiber has a large surface area, an increase of about 80% of the surface area compared to the normal round cross-section fiber, and therefore has a strong resistance to dust and dust, greatly Increased filtration efficiency. Second, irregular fibers have uneven distribution due to their different internal stresses, which naturally curl the fiber, resulting in strong cohesion between fibers. The incorporation of P84 fiber in the needle-punched composite felt can increase the binding force between the felt layer and the base fabric. Even if the wind speed increases, the felt layer does not peel off from the base fabric.
In foreign markets, pure P84 fiber needle punch felt filter bags have many advantages such as high temperature resistance, large air volume, long service life, high dust removal efficiency, acid and alkali resistance, corrosion resistance, and good chemical stability. However, P84 fiber cannot be produced at present in China. If imported from abroad, the price per kilogram is more than 400 yuan, which is more than 20 times that of glass fiber, which is unbearable to the general manufacturers. For this reason, the research and development staff of the seventh Institute of Nanjing Fiberglass Institute compounded glass fiber with P84 fiber. The resulting needle felt filter bag has similar performance as the pure P84 fiber filter bag, but the price is only higher than pure glass fiber acupuncture. Felt filter bags are more than a dozen percent higher, making them the highest temperature resistant, best performing, and relatively inexpensive high temperature filter materials on the market. After the product was developed and produced, it was put on the market and was immediately favored by many companies.