High-quality high-strength high-modulus polyethylene fiber preparation equipment
A polyethylene fiber, high-strength and high-modulus technology, applied in the chemical industry, can solve problems such as quality degradation and uneven modulus, and achieve the effects of reducing unit power consumption, ensuring production capacity, and preparing high-strength and high-modulus polyethylene fibers at low cost.
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Embodiment 1
[0049] This embodiment provides a kind of preparation equipment of high-quality high-strength high-modulus polyethylene fiber, see figure 1, which includes the spinning dope preparation device, twin-screw extruder 001, spinning box 002, tractor 003, extractor 004, dryer 005, drafting machine 006 and winder arranged in sequence in sequence 007, the extraction speed of the extractor 004 is N times the spinning speed of the spinning box 002, N>1.
[0050] The inventors found that in the existing process of industrialized preparation of high-strength and high-modulus polyethylene fibers, due to the limitation of high draw ratio, only the process method of pre-spinning breakpoint can be used. It causes uneven evenness and shrinkage, which leads to uneven fineness, strength, modulus and quality decline of the finished fiber. Therefore, in order to overcome this technical problem, one or more than one twin-screw extruder 001 is used as the mixing unit, and the number of spinnerets o...
Embodiment 2
[0057] Drafting rollers, see figure 2 , which includes a rotating shaft 400, a roller body 600, a jacket roller 700 and a heat transfer medium pipe, wherein:
[0058] A first channel 410 and a second channel 420 are provided in the rotating shaft 400, the first channel 410 is cylindrical, the second channel 420 is a circular cylindrical cross section, the axis of the first channel 410, the second channel 420 The axes of both coincide with the axis of the rotating shaft 400, the mutually independent first channel 410 and the second channel 420 provide the passage for the heat transfer medium to enter and return, and the first channel 410, the second channel 420, the rotating shaft 400 The axes of the three coincide, so that the cross-sectional shape of the first channel 410 and the cross-sectional shape of the second channel 420 remain fixed when the three are synchronously rotated, which provides conditions for the butt joint of the pipeline for conveying the heat-conducting ...
Embodiment 3
[0076] On the basis of Example 2, the inventors found that since the outlet of the first channel 410 and the inlet of the second channel 420 are located at the same end of the rotating shaft 400, that is, the horizontal position between the two is relatively small, such as directly in the medium flow The same end of the cavity 430 is provided with a medium inlet and a medium outlet, so that the left side of the medium inlet (such as figure 2The fluidity of the heat conduction medium in the middle left direction is the left side) is very small, causing the phenomenon of uneven temperature in the medium flow chamber 430, so the media conduit 530 is fixed in the acrobatic medium flow chamber 430, and the first end of the medium conduit 530 is connected to The medium inlet, the second end of the medium conduit 530 extends to the first end 710 of the medium flow chamber 430 and keeps a distance from the end cover of the first end 710, the medium inlet and the medium outlet are both...
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