Special-purpose needled felt for complex condition coal fired power plants and preparation method thereof

The invention discloses a special-purpose needled felt for complex condition coal fired power plants, which comprises a dust receiving surface, an auxiliary filter layer, an strengthen base cloth layer and a support layer which are orderly composited together by needling, wherein the dust receiving...

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Bibliographische Detailangaben
Hauptverfasser:	ZENG PENGCHENG, ZHANG GUO, ZENG MENGYI, ZHANG LEWEI, SHI CHUNMIAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	The invention discloses a special-purpose needled felt for complex condition coal fired power plants, which comprises a dust receiving surface, an auxiliary filter layer, an strengthen base cloth layer and a support layer which are orderly composited together by needling, wherein the dust receiving surface is blended by polyphenylene sulfite (PPS) fibers, polytetrafluoroethylene (PTFE) fibers and polyimide (PI) fibers according to proportion of 1:(0.2-0.5):(0.2-0.5), the auxiliary filter layer and the support layer are respectively needled by the PPS fibers, and the strengthen base cloth layer is interlaced by PTFE filament yarns in longitude and latitude. The invention further discloses a method for preparing the special-purpose needled felt for the complex condition coal fired power plants. The dust receiving surface is blended by the PPS fibers, the PTFE fibers and the PI fibers, thereby being low in cost, and increasing transverse and longitudinal strength of the special-purpose needled felt. Probability