The preparation method of collagen fiber and genuine leather fiber leather which can be directly spun

Abstract

The invention discloses a collagen fiber capable of being directly used for spinning and dermal fiber leather prepared by the same. The collagen fiber is obtained by utilizing the strong effect of a polar solvent rich in hydroxyl groups and the combination of an ultrasonic treatment mode to achieve dissociation of intermolecular high-crystallized hydrogen bonds on the conditions of great mildness, obtaining raw material loosed in structure, performing drum treatment softening, liquid fiber separation and fiber drying, and then performing treatment on the dried collagen fiber in a single fiber state in combination with electrical impulse of an appropriate strength on the conditions of nitrogen protection. The preparation process is clean and free of pollution, and the manufactured collagen fiber can be directly spun through an existing spinning process without needing graft modification or compounding.

Description

technical field [0001] The invention relates to a collagen fiber for weaving that can be directly spun and a real leather fiber leather prepared therefrom, in particular to a collagen fiber that can be directly spun and a real leather fiber leather prepared therefrom. Background technique [0002] With the development of the tanning industry, the discharge of solid waste in the leather processing process has also increased, and the resulting environmental pollution has been increasingly addressed under the guidance of sustainable development and clean production. attention. In the solid waste of tanning, except for a small amount of animal hair and meat, its main components are leftovers and leftovers during the trimming and cutting of wet blue leather in the leather processing process. This kind of wet blue leather scraps are interwoven with dermis fibers, that is, collagen fibers, which account for 95% to 98% of the total fiber mass of the entire dermis. [0003] Collage...

AI Technical Summary

Problems solved by technology

Combined with physical treatment after chemical treatment, such as acid swelling, alkaline swelling, enzyme treatment, etc., it is easy to soften the collagen fibers in the chemical environment or the chemical environment is too strong to destroy the molecular structure of collagen, exposing possible The combined end groups may be broken into small molecular groups, resulting in fiber fragments, and the force generated by the subsequent physical treatment is relatively large, resulting in damage to the fibrils, reducing the available groups, making it suitable for use in yarns. During the preparation and production of fabrics, it is easy to have insufficient bonding force, resulting in uneven tension of the formed leather, easy to scratch, break and other defects, which is not suitable for the processing and production of high-end genuine leather products; the resulting fiber fragments also follow the processing process loss, resulting in a waste of resources and increasing the production cost of the target product

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