Preparation method of alginic acid fiber

Abstract

The invention discloses an alginic acid fiber preparation method, which comprises: S1, preparing sodium alginate, respectively weighing 1000 parts by mass of seaweed and 500 parts by mass of diluted acid, adding the diluted acid into the seaweed so as to convert insoluble alginate into alginic acid, adding alkali, carrying out heating extraction, dissolving out soluble sodium salt, filtering, adding calcium salt to generate calcium alginate precipitate, and drying to obtain the sodium alginate fiber; the precipitate is converted into insoluble alginic acid through acid liquor treatment, the insoluble alginic acid is converted into sodium salt after being dehydrated and alkali is added, and sodium alginate is obtained after drying. Undissolved macromolecules and various impurity particles in the raw materials can be filtered through 3-5 times of filtration, and the probability of monofilament breakage caused by blockage of spinneret orifices in the spinning process can be reduced; meanwhile, defoaming is carried out in a vacuum state, the higher the vacuum degree is, the smaller the pressure on the liquid level is, bubbles can be rapidly expanded, and the defoaming speed can be greatly increased; the preparation method disclosed by the invention is relatively simple, and the obtained alginic acid fiber is relatively good in tensile property and relatively high in quality.

Description

technical field [0001] The present invention relates to the technical field of alginate fiber processing, in particular to a preparation method of alginate fiber. Background technique [0002] Alginic acid is a natural polymer material extracted from brown algae. It is a non-toxic, harmless and biodegradable pure natural green material. Alginic acid is prepared by wet spinning with alginic acid as raw material. Fiber, which can be used in textile, clothing, medical and health and other fields, is a functional fiber material with high added value. [0003] The traditional alginate fiber is easily mixed with certain impurities during the preparation process, which reduces the quality of the alginate fiber. At the same time, the current sodium alginate solution will be doped with a large number of air bubbles, which will reduce the forming efficiency of the alginate fiber. Therefore, In view of the above problems, a preparation method of alginate fiber is proposed. SUMMARY O...

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Problems solved by technology

[0003] In the preparation process of traditional alginic acid fibers, there are likely to be certain impurities doped in it, which reduces the quality of alginic acid fibers. At the same time, the current sodium alginate solution will be doped with a large number of air bubbles, which will reduce the molding efficiency of alginic acid fibers. Therefore, Propose a kind of preparation method of alginic acid fiber at the problems referred to above

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