A kind of preparation method of regenerated acrylic fiber and regenerated acrylic fiber product
A technology of acrylic fiber and acrylic fiber, which is applied in the direction of spinning solution preparation, textile and papermaking, filament/thread forming, etc., to achieve the effect of increasing hygroscopicity, improving poor hygroscopicity and easily generating static electricity, and improving poor hygroscopicity
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Embodiment 1
[0089] Regenerated acrylic fiber made from 100% natural acrylic fiber
[0090] The preparation method is:
[0091] (1) Remove the reclaimed raw materials from foreign matters such as yarn bobbins, and then wash them with water. Adding 0.05% sodium hydroxide alkali accelerator in the washing solution in the washing process, and finally drying the washed raw materials to obtain regeneration and dissolution Raw materials: In order to facilitate better subsequent dissolution, the regenerated dissolved raw materials need to be crushed before dissolving.
[0092] (2) Put the regenerated and dissolved raw materials in (1) into the dimethylacetamide solution for dissolution, the heating temperature during the dissolution process is 100° C., and the heating time is 30 minutes; during the dissolution process, 0.3% of the dissolved fabric mass percentage is added Sodium hydroxide penetrating agent, accounting for 0.3% citric acid antioxidant and accounting for 0.04% carbazole purple col...
experiment example 1
[0108] This experimental example is used to compare the performance parameters of the regenerated acrylic fibers and non-regenerated acrylic fibers obtained in Example 1 and Comparative Examples 1-3, as shown in Table 2.
[0109] Table II:
[0110]
[0111]
[0112] As can be seen from the above experimental results, the breaking strength and elongation at break of the regenerated acrylic fibers obtained in Example 1 are similar to those of non-regenerated acrylic fibers, and the hygroscopicity is better than that of non-regenerated acrylic fibers; while the regenerated acrylic fibers obtained in comparative examples 1-3 The breaking strength and elongation at break of the fiber were significantly lower than that of the non-regenerated acrylic fiber, and the moisture regain of the fiber was slightly higher than that of the non-regenerated acrylic fiber. The reason for this situation is that the purification process was adopted in the preparation method of Example 1. Duri...
experiment example 2
[0115] By contrasting the cross-sectional electron micrograph of the regenerated acrylic fibers made by the present invention (as figure 1 shown), the fiber cross-section electron micrograph of recycled acrylic clothing (such as figure 2 Shown) and the cross-sectional electron microscope picture of non-regenerated acrylic fiber (such as image 3As shown), it can be clearly seen that the cross-section of recycled acrylic fiber presents almost the same typical waist shape as that of non-regenerated acrylic fiber, but the surface of recycled acrylic fiber has slightly burrs than virgin acrylic fiber, and these small amount of burrs help moisture absorption Sweat and improve dyeing performance, and through the experimental data of Experimental Example 1, it can also be seen that the physical index of regenerated acrylic fiber is close to that of non-regenerated acrylic fiber, and the moisture regain is slightly higher than that of non-regenerated acrylic fiber; After washing, th...
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