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
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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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