Dimensionality-stable regenerated cellulose fiber and preparation method thereof
A technology of regenerated cellulose and cellulose, which is applied in the field of textile fibers, can solve the problems of low production rate and high hygroscopic expansion rate, and achieve the effect of improving brittleness, strong hook, stable transverse section and longitudinal dimension
Examples
Embodiment 1
[0016] Embodiment 1: Regenerated cellulose fiber preparation method one
[0017] The bamboo pulp with a degree of polymerization of 500 and a cellulose content of 95% was used to prepare the spinning viscose solution through the processes of impregnation, pressing, crushing, aging, yellowing, continuous dissolution, filtration, and deaeration. And in the post-dissolving process of cellulose, AC1815 equivalent to 0.01% of methyl cellulose and 0.05% of 1,3-dichloro-2-propanol were successively added to obtain 9% methyl cellulose, 6% NaOH, viscosity (falling ball method) 60S, maturity (10%NH 4 Cl) 18ml, viscose xanthate spinning dope with a degree of esterification of 35; wet spinning process is used for spinning. The size of the spinneret is 21000 holes × 0.05mm, the spinning speed is 55m / min, and the coagulation bath composition is: sulfuric acid 120g / L, sodium sulfate 320g / L, zinc sulfate 10g / L. The main indicators of the fiber prepared through the above steps are as follows...
Embodiment 2
[0018] Embodiment 2: Regenerated cellulose fiber preparation method two
[0019] Using wood pulp with a degree of polymerization of 500 and a cellulose content of 93.5%, the spinning viscose solution was prepared through the processes of impregnation, pressing, crushing, aging, yellowing, continuous dissolution, filtration, and degassing. And in the process of dissolving the cellulose, add V-318 equivalent to 2.0% of methyl cellulose to obtain 9% of methyl cellulose, 6% of NaOH, viscosity (falling ball method) 60S, maturity (10%NH 4 Cl) 18ml, viscose xanthate spinning solution with a degree of esterification of 35; 40 minutes before spinning, add dimethylolethylene urea equivalent to 1.5% of cellulose, and use wet spinning process Spinning is performed. The size of the spinneret is 21000 holes × 0.05mm, the spinning speed is 55m / min, and the coagulation bath composition is: sulfuric acid 120g / L, sodium sulfate 320g / L, zinc sulfate 10g / L. The main indicators of the fiber prep...
Embodiment 3
[0020] Embodiment 3: Preparation method three of regenerated cellulose fibers
[0021] Using wood pulp with a degree of polymerization of 500 and a cellulose content of 93.5%, the spinning viscose solution was prepared through the processes of impregnation, pressing, crushing, aging, yellowing, continuous dissolution, filtration, and degassing. And in the post-dissolving process of cellulose, V-318 equivalent to 2.0% of methyl cellulose and 1.0% of AC1815 were added respectively to obtain 9% methyl cellulose, 6% NaOH, viscosity (falling ball method) 60S, maturity (10%NH 4 Cl) 18ml, viscose xanthate spinning stock solution with a degree of esterification of 35; 20 minutes before spinning, add dimethylol urea equivalent to 1.8% of cellulose, and use wet spinning process for spinning . The size of the spinneret is 21000 holes × 0.05mm, the spinning speed is 55m / min, and the coagulation bath composition is: sulfuric acid 120g / L, sodium sulfate 320g / L, zinc sulfate 10g / L. The mai...
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Abstract
Description
Claims
Application Information
- IPC
- D01F2/08
- Inventors
- 喻翠云; 陈红霞