Production method of polyphenyl thioether filament

A technology of polyphenylene sulfide and production method, which is applied in the directions of filament forming treatment, melt spinning, heating/cooling fabric, etc., can solve the problems of not showing the performance index of PPS filament, not indicating the process technology, etc., and achieves breakage. The effect of high strength, low elongation at break and high thermal stability

Inactive Publication Date: 2008-10-08
梅艳芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no proof of various performance indicators of the preparation of PPS filaments using this patented technology and the performance comparison with foreign PPS filaments; in the preparation method of

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A production method of polyphenylene sulfide filament, comprising the following process steps:

[0022] 1. Select linear polyphenylene sulfide slices. The polydispersity index of the polymer is 1.85, and the solubility index is 95g / min. The polymer resin is pre-crystallized on the crystallization bed before spinning. The crystallization temperature is controlled at 130°C. for 1.5 hours.

[0023] 2. Send the pre-crystallized polyphenylene sulfide resin slices into the packed drying tower, and use dehumidification high-purity nitrogen to dry. The drying temperature is controlled at 165 ° C, and the drying time is 6 hours. The dried polyphenylene sulfide resin The water content of the slices is about 60ppm.

[0024] 3. After drying, the polyphenylene sulfide resin slices enter the screw extruder for melting by their own weight. The screw extruder is a Barmag screw with a diameter of Φ65mm and a length-to-diameter ratio of 1:25. The control temperature of each zone of the ...

Embodiment 2

[0027] A kind of production method of polyphenylene sulfide filament, is to select linear polyphenylene sulfide, the polydispersity index of polymer is 1.85, and solubility index is 95g / min, and polymer resin carries out pre-crystallization on the crystallization bed before spinning , the crystallization temperature is controlled at 130°C, and the crystallization time is 1.5 hours. After pre-crystallization, the polyphenylene sulfide resin chips enter the packed drying tower, and are dried with dehumidified nitrogen. The drying temperature is controlled at 165°C, and the drying time is 8 hours. The water content of the dried polyphenylene sulfide resin slices is about 50ppm. After drying, the dried polyphenylene sulfide resin slices enter the screw extruder for melting by their own weight. The screw extruder is a Φ65mm Barmag screw with a length-diameter ratio of 1:25 Extruder, the control temperature of each zone of the screw extruder is 320 / 331 / 328 / 325 / 322, the polyphenylene ...

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Abstract

Disclosed is a polyphenylene sulphide PPS filament production method. After the precrystallization the PPS resin slice is sent to a filled-drying tower, the drying is proceeded with the use of the dehumidifying high purity nitrogen. The drying temperature is controlled at 165 DEG C, and the drying time is 6 hours. After the drying, the PPS resin slice relies on the dead weight to enter a screw extruder for the meltdown. The controlling temperature of each zone of the screw extruder is 260/310/318/325/322 DEG C, and then after the meltdown through the screw extruder the PPS resin slice enters a spinning manifold to spin. The filament spraying pressure is 220kg/cm2. After heated through a heater, the as-spun fiber sprayed through a spraying plate is in cooling molding through a lateral blow in which the temperature is controlled at 22 DEG C. The cooled fibers are in winding shaping through a winding head with the winding speed of 1000m/min. After the fiber winding, a parallel drafting machine is adopted for the processing of the drafting setting with the drafting speed of 500m/min, the drafting temperature of 105 DEG C and the setting temperature of 140 DEG C. Therefore, the fiber produced through the method of the invention has the advantages of high fracture strength, low fracture growth, high thermal stability, chemical resistance and so on.

Description

technical field [0001] The invention relates to a production method of synthetic fiber filaments, in particular to a production method of polyphenylene sulfide filaments. Background technique [0002] Polyphenylene sulfide fiber, also known as PPS fiber, PPS fiber is a high-performance fiber, which has excellent heat resistance, chemical corrosion resistance, flame retardancy, excellent mechanical properties and electrical properties. And because its price is relatively low among many high-performance fibers. Therefore, once it appeared, it immediately attracted the attention of many industries. Because of this, PPS fiber is also widely used in high-temperature flue gas dust removal, strong corrosive medium filtration, radiation protection work clothes, and many fields such as light industry, papermaking, and food. my country began to develop and apply PPS resin and PPS short fiber in 1994. In 1995, a patent for resin manufacturing method (ZL95111471.9) was disclosed. In 20...

Claims

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Application Information

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IPC IPC(8): D01D1/00D01D5/08D01D5/084D01D5/092D02J1/22D02J13/00D06C7/02D01F6/76
Inventor 王平庄辉车剑锋
Owner 梅艳芳
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