Cotton stalk pholeom fiber and degum processing method thereof

Abstract

The invention relates to a cotton-stalk hide fiber and a degumming method thereof. The technique process of the method comprises the following steps: cotton-stalk hide preparation, drying-softening, ultrasonic wave pre-treatment, pressing-drying, boiling-whitening, pressing-drying, washing with hot water, pressing-drying, oil-supply, pressing-drying, oven-drying, softening and obtaining of belt-form prepared dried fibers. The fiber of the obtained cotton-stalk hide prepared fiber appears as a smooth straight belt. The degumming process of the invention is so gentle and can preserve the physical capability and natural style of the cotton-stalk hide fiber to the most extent, and has the advantages of safety, high-efficiency, energy-conserving, low cost, low-pollution, simple operation and stable quality. The cotton-stalk hide prepared fiber of the invention appears as original coffee color (or white) with mild color tune, unified luster, flexible and loose state and smooth-straight belt form, and creats a better condition for further manufacturing. The original coffee color (without whitening) of the cotton-stalk hide fiber can be spun directly or spun with other natural fibers to weave out natural, healthy and environment-friendly novel products.

Description

technical field [0001] The invention relates to a bast fiber and a degumming processing method thereof, in particular to a cotton stalk fiber and a degumming processing method thereof. Background technique [0002] Cotton stalk bark is the main by-product fiber brought by planting cotton, accounting for about 30% of the whole cotton stalk, and its cellulose content is about 62.8%. my country has more than 80 million mu of cotton fields, and one mu of cotton fields produces more than 200 kilograms of cotton stalks, that is, the total amount of cotton stalks is more than 16 million tons per year, and the annual biomass of cotton stalk bark is more than 4.8 million tons. Making full use of cotton stalk resources can fundamentally alleviate the serious shortage of cotton in our country. [0003] Cotton stalks and the main textile hemp are both bast fibers, and have the same characteristics as hemp fibers: [0004] (1) Typical biodegradable and environmentally friendly biologic...

AI Technical Summary

Problems solved by technology

First, flash explosion technology is used to partially degrade the hemicellulose and lignin in the cotton stalk skin, and then the cotton stalk skin after flash explosion is subjected to advanced treatment by high temperature and high pressure method, and the cotton stalk is extracted by using flash explosion technology combined with chemical scouring Although the leather fiber has improved the environmental pollution, the hot steam used has a pressure of 1-2 MPa and the pressure is released instantaneously. The extracted fiber arrangement is very disordered, and the straight state of the fiber cannot be maintained, which affects the subsequent processing

[0012] All the above degumming methods have common deficiencies: (1) The epidermis of the cotton stalk skin is not removed before degumming, and it is basically in an intact state, while the keratinized epidermis is mainly composed of wax, pectin and protein in an amorphous aggregate state Structural composition, cellulose-free, hydrophobic, difficult to remove, especially when the epidermis is intact, strong degumming process conditions have to be adopted to desolvate the epidermis, and the resulting scouring waste The liquid is very turbid, with a lot of suspended matter, which is brownish black, unable to be recycled, and has a large amount of organic pollutant discharge; (2) The extracted fibers are arranged in disorder, which brings great trouble to the deep processing, especially in the subsequent development. In the process of loosening and carding, the fiber damage is serious, the short-lint rate increases greatly, and the average length of the process fiber is significantly reduced. Textile performance

(3) The process is not easy to control, and the quality stability is not high; (4) Each production step is carried out intermittently, the materials have not been mechanized, automatic and continuous transfer, and the whole set of equipment has not realized continuous production, the labor intensity is high, and the production cycle is long

[0013] The Chinese patent ZL200720062277.2 applied by the applicant provides a cotton stalk sheath core separator, which mechanically separates the cotton stalk sheath with damaged or peeled skin, which is conducive to subsequent processing and solves the key problem of cotton stalk sheath fiber industrialization core technology, but there is no report on the continuous production of bast fiber, especially cotton stalk degumming in the prior art