Preparation method of varicosity polytetrafluoroethylene fibre having function for catalytic decomposition of dioxins

• Main Authors: GUO YUHAI, MA XUNMING, YU LIYING, CHEN JIANYONG, SUN RUNJUN, LAI KAN
• Format: Patent
• Language: Chinese; English
• Published: 03.09.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPINNING; TEXTILES; THEIR RELEVANT APPARATUS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Disclosed is a process for producing bulky polytetrafluoroethylene fiber with function of catalytically decomposing dioxin, including the steps of mixing bulky polytetrafluoroethylene powder and catalyst powder capable of decomposing dioxin, and then mixing liquid lubricant and thereafter preparing the fiber by processes as follows: extrusion, rolling, longitudinally drawing, sintering stereotype and splitting. The material can be widely used in the treatment of high-temperature tail dedusting and decomposition of emissions. Compared with the previous techniques, the advantages of the present invention are simple process, low cost, no pollution and the like.