Preparation method of PTFE (Polytetrafluoroethylene) fluff fibers

Abstract

The invention discloses a preparation method of PTFE (Polytetrafluoroethylene) fluff fibers. The preparation method comprises the following steps: 1) carrying out ultrasonic treatment on a PTFE resinraw material; 2) adding the PTFE resin raw material subjected to the ultrasonic treatment into a mold; then putting the mold into a sintering furnace and sintering to prepare a blank; 3) adding the blank into an extruding machine and extruding to obtain a blank material; 4) adding the blank material into a stretching machine and stretching to obtain crude fiber yarns; 5) adding the crude fiber yarns into a twisting machine and twisting crude fiber yarn bundles to prepare a PTFE fiber film; 6) carrying out film tearing on the PTFE fiber film through a needle roller to prepare tow filaments; 7)after carrying out humidification treatment on the tow filaments through a conveying roller, conveying the tow filaments into a cutting-off machine and cutting the tow filaments into the fluff fibers;8) drying the fluff fibers and then molding through a pressure roller; then carrying out packaging treatment. The PTFE fluff fibers prepared by the preparation method can be used for replacing existing PTFE micro-powder and also has performance including lubrication and the like.

Description

technical field [0001] The present invention relates to fiber processing technology, more specifically, relates to a kind of preparation method of PTFE cashmere fiber. Background technique [0002] Polytetrafluoroethylene (also known as PTFE), commonly known as "Plastic King", its main properties are high and low temperature resistance, corrosion resistance, excellent insulation, low dielectric constant, low dielectric loss, low friction coefficient, low surface energy, etc. It has been widely used in many industrial sectors such as electronics, aviation, machinery, medicine, chemical industry and people's daily life. In addition to pure resin, filled reinforced resin, blended resin and other forms of its use, an important application direction is to use it as an additive to improve the properties of other polymers and other materials. [0003] PTFE can also be used as an additive in material systems such as grease, coatings, and plastics to increase the lubricating propert...

AI Technical Summary

Problems solved by technology

In addition, due to the low surface energy of PTFE and poor compatibility with other materials, it is difficult to evenly distribute in other materials to form a material with stable dispersion performance, which makes the effect as an additive worse and the performance cannot be fully exerted.

[0004] In order to make PTFE widely used in the fields of plastics, coatings, oils, inks, etc., PTFE micropowder is used as an additive in the existing technology. However, the cost of making PTFE micropowder is relatively high, so a lower cost material is required. To replace PTFE powder

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