Continuous spinning system of poly (p-phenylene terephthalamide)
A technology of poly-p-phenylene terephthalamide and spinning system, which is applied in the direction of spinning solution preparation, filament forming treatment, textile and papermaking, etc. Solving problems such as long time consumption, to achieve the effect of improving production efficiency and finished silk quality, easy reproduction of large-scale industrialization, and easy and smooth material advancement
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[0053] Example 1
[0054] Such as figure 1 Shown, a continuous spinning system of poly-p-phenylene terephthalamide, which has spinning dope screw mixing and dissolving machine 24, filter 25, spinning machine 26; spinning dope screw mixing and dissolving machine 24 The material output port is connected to the material input port of the filter 25, and the material output port of the filter 25 is connected to the material input port of the spinning machine 26; the aramid filament spun from the spinning machine 26 is sent to the washing machine 28 through the tractor 27, After being washed with water, it is dried by a dryer 29, and after being oiled by the oiling machine 30, the winding machine 31 is wound into a final product.
[0055] In the system device, the structure of the spinning dope screw mixing and dissolving machine 24 is as Figure 5-11 Shown
[0056] Such as figure 2 As shown, it has a pre-mixing screw extruder 1 and a miscible screw extruder 2; the two ends of the connec...
Example Embodiment
[0075] Example 2:
[0076] A continuous spinning system of poly-p-phenylene terephthalamide. Its structure is basically the same as that of Example 1. The only difference is in the spinning dope screw mixing and dissolving machine 24, such as image 3 As shown, in addition to the feeding section 4, the pre-mixing screw extruder 1 has a mixing section 6. The screw 9 of the feeding section 4 and the mixing section 6 can have different forms, so that the feeding section 4 can quickly transfer the spinning dope. It is fed into the pre-mixing screw extruder, and the mixing section 6 can realize the high-efficiency mixing of the spinning dope; according to the different functions of the feeding section 4 and the mixing section 6, the length ratio between the two can be 1:1~1 :30; The miscible screw extruder 2 has only the miscible section 5, and the exhaust chamber 17 is opened on the miscible section 5.
[0077] The mixing section 6 disperses, mixes PPTA powder and sulfuric acid, and tr...
Example Embodiment
[0078] Example 3:
[0079] A continuous spinning system of poly-p-phenylene terephthalamide. Its structure is basically the same as that of Example 1. The only difference is in the spinning dope screw mixing and dissolving machine 24, such as Figure 4 As shown, the pre-mixing screw extruder 1 has a feeding section 4 and a mixing section 6, and the miscible screw extruder 2 has only a degassing section 7 and a pressure regulating section 8.
[0080] The pressure regulating section 9 adjusts the pressure of the spinning dope coming from the front section, so that the pressure of the material at the screw outlet can better meet the process requirements, and can adjust the pressure of the spinning solution when it enters the spinning link to ensure that the aramid filament is ejected The uniformity of the product can be achieved by single-threaded block 15 or double-threaded block 14 alone or in combination;
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