Preparation method of completely biodegradable polybutylene succinate filament
A polybutylene succinate, biodegradation technology, applied in the direction of single-component polyester artificial filament, complete equipment for producing artificial thread, melt spinning method, etc., can solve the problem of polybutylene succinate Problems such as not being able to melt spinning alone, to achieve the effect of good spinning processing performance, obvious effect, and simple preparation method
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Embodiment 1
[0027] A preparation method of fully biodegradable polybutylene succinate filament, comprising:
[0028] (a) Buy polybutylene succinate (PBS) slices from the market, and the slices are pre-crystallized and then enter the drying tower, and the PBS slices are dried by a vacuum drum dryer. The drum of the drum is slightly inclined And can rotate the cylinder, the wet slices enter from the upper part of one end, and the dry slices are collected from the lower part of the other end. The hot air enters from the feed end or the discharge end, and is discharged from the upper part of the other end. There is a forward lifting board in the cylinder, so that the slices are continuously picked up and sprinkled during the rotation process in the cylinder, so that they can fully contact with the hot air flow, so as to improve the drying efficiency. The drying temperature is 60-90° C. and the drying time is 6-12 hours, so that the moisture content of the slices is lower than 50 ppm.
[002...
Embodiment 2
[0034] A preparation method of fully biodegradable polybutylene succinate filament, comprising:
[0035] (a) Purchase polybutylene succinate (PBS) slices from the market. The slices first enter the pre-crystallizer (whether to pass through the crystallizer is selected according to the conditions of the material), and then enter the drying tower, using a vacuum drum The dryer dries the PBS slices. The drum of the drum is a slightly inclined and rotatable cylinder. The wet slices enter from the upper part of one end, and the dry slices are collected from the lower part of the other end. The hot air enters from the feed end or the discharge end, and is discharged from the upper part of the other end. There is a forward lifting board in the cylinder, so that the slices are continuously picked up and sprinkled during the rotation process in the cylinder, so that they can fully contact with the hot air flow, so as to improve the drying efficiency. The drying temperature is 60-90° C...
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