Method for preparing cotton stalk skin fiber for spinning with combination between steam explosion and alkali treatment

Abstract

The invention relates to a method for preparing a cotton stalk skin fiber for spinning with combination between steam explosion and alkali treatment. The technological process comprises the steps of cotton stalk skin cutting, soaking, steam explosion, hot water cleaning, alkali liquor boiling and refining, washing, neutralizing, bleaching, washing, lubricating treatment, washing, airing, combing and cotton stalk skin fiber obtaining. The fineness of the cotton stalk skin fiber treated through the method can reach about 27 dtex to the minimum, and the cellulose content of the cotton stalk skin fiber treated through the method can reach about 82% to the maximum. Compared with traditional alkali boiling preparation of the cotton stalk skin fiber, the cotton stalk skin is separated through steam explosion pretreatment, a steam explosion technological test stand is different from a traditional steam explosion device, the explosion time is quite short and is 0.0875 s, the acting force on the fiber during the explosion moment is larger, and the obtained fiber is finer.

Description

technical field [0001] The invention relates to a method for preparing textile cotton stalk sheath fibers by combining steam flash explosion and alkali treatment, which belongs to the field of textile fiber preparation. Background technique [0002] my country is a big cotton producing country, and the cotton straw resources are very rich. Cotton stalk is a renewable resource, and its cellulose content is about 40%. Extracting cotton stalk fibers suitable for textile and composite materials from cotton stalk husks will help increase the value of cotton crops. However, in a long period of time, most of the cotton stalks are burned as waste, resulting in a waste of resources. [0003] At present, the patents for preparing cotton stalk husk fibers mainly include: (1) Alkali treatment to prepare cotton stalk husk fibers, such as the invention patent "A Method for Preparing Cotton stalk husk cellulose fibers by direct degumming of cotton stalks" (CN102286789A) introduces the use...

AI Technical Summary

Problems solved by technology

However, in a long period of time, most of the cotton stalks are burned as waste, resulting in waste of resources

[0003] At present, the patents for preparing cotton stalk husk fibers mainly include: (1) Alkali treatment to prepare cotton stalk husk fibers, such as the invention patent "A Method for Preparing Cotton stalk husk cellulose fibers by direct degumming of cotton stalks" (CN102286789A) introduces the use of alkali The method of treatment prepares cotton stalk skin fiber; (2) biological enzyme prepares cotton stalk skin fiber, as the invention patent " method for preparing cotton stalk bast textile industrial fiber " (CN102660778A) uses compound biological enzyme to carry out cotton stalk skin fiber (3) Pretreatment of cotton stalk skins by using flash explosion equipment, such as the invention patent > (CN101008108A), which is prepared by combining flash explosion and high temperature and high pressure post-treatment Cotton husk fibers, but the cotton husk fibers produced by these methods are thicker