A kind of manufacturing method of monofilament woven filter cloth

Abstract

The invention discloses a method for manufacturing coarse denier polytetrafluoroethylene (PTFE) monofilament woven filter cloth. The main process of the present invention includes: polytetrafluoroethylene (PTFE) monofilament (300~500D) treated with antistatic agent, using twill or variable twill weave, warp density 35‑450 / 10cm, weft density 200~350 / 10cm 10cm, using a rapier loom to weave at low speed, shaping and calendering to manufacture a polytetrafluoroethylene (PTFE) monofilament woven filter cloth with a stable structure. The invention provides a method for preparing woven filter cloth by using polytetrafluoroethylene (PTFE) monofilament, which not only has the performance characteristics of polytetrafluoroethylene (PTFE) film and needle felt, but also has high filtration efficiency, simple pores, It has the advantages of small filter resistance, minimum clogging, easy cleaning and best slag discharge performance, wear resistance, long service life, etc. It is suitable for use in different high temperature and acid and alkaline occasions such as waste incinerators and coal boilers.

Description

technical field [0001] The invention relates to the field of high-temperature filtration, and specifically utilizes polytetrafluoroethylene (PTFE) monofilament filter cloth manufacturing technology to prepare polytetrafluoroethylene (PTFE) monofilament woven filter cloth with a stable structure, which can be directly applied to high-temperature filtration field. Background technique [0002] In the prior art: [0003] Polytetrafluoroethylene (PTFE) fiber has excellent high and low temperature resistance, chemical stability, good electrical insulation performance, non-adhesion, weather resistance, flame retardancy and good self-lubrication, and has been used in chemical, petroleum, Textile, medical, machinery and other fields have been widely used. In recent years, it has become the preferred material for waste incineration, space suits, fire suits, filter materials and aerospace materials. [0004] Using polytetrafluoroethylene and fabric keywords to search, it is found th...

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Problems solved by technology

[0005] However, due to the smooth surface of PTFE fiber, almost zero coefficient of friction, and strong static electricity, there is no report about the weaving of monofilament PTFE into woven filter cloth. The technology of the present invention can be made into polytetrafluoroethylene with stable structure. Ethylene (PTFE) monofilament woven filter cloth has the advantages of high strength in the warp and weft directions, high filtration efficiency, and long life.

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