Glass fiber polyimide P84 compound filter material and preparation method thereof

• Main Authors: DU XIUYU, GONG WEI
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2012
• Subjects: 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

The invention discloses a filter material, and particularly relates to a glass fiber polyimide P84 compound filter material and a preparation method thereof. The glass fiber polyimide P84 compound filter material comprises a glass fiber base cloth and a composite fiber layer; the upper surface and the lower surface of the glass fiber base cloth are covered with composite fiber layers; each composite fiber layer is prepared by needling the mixed glass fiber, Kevlar fiber and P84 fiber into a felt, carding the felt by a carding machine, and stacking into a net; and the composite fiber layers on the upper and lower surfaces of base cloths are needled by a needle machine to be combined together, and polytetrafluoroethylene (PTFE) emulsion pervasive film covering treatment is carried out on the combined composite fiber layers. The preparation method comprises the following steps of: firstly manufacturing a glass fiber base cloth; then manufacturing the composite fiber layers on the upper and lower surfaces of the