Coconut shell functional composite fiber preparation method

Coconut functional composite fibers are prepared by modified lignin, lauric acid and plant polyphenols in coconut waste, which solves the problems of low waste utilization rate and low fiber resurrection rate in the prior art, and achieves efficient and environmentally friendly fiber preparation, improving the functionality and hygroscopicity of the fiber.

CN119710967APending Publication Date: 2025-03-28LI NING SPORTS TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202411891596.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the prior art, the utilization rate of waste during the preparation of functional polyester fibers is low, the fiber moisture rebate rate is low, and the preparation method is not environmentally friendly enough to effectively utilize the waste.

Method used

The lignin, lauric acid and plant polyphenols in coconut shell waste were modified and modified by quaternization modification and hydrophilic modification to form a modified powder, and blended with PBT slices through a twin-screw extruder to form functional masterbatches, and then melt-spinned with conventional PET slices to prepare coconut shell functional composite fibers.

Benefits of technology

It realizes efficient utilization of domestic waste, improves the moisture rebate, antibacterial and ultraviolet resistance of fibers, provides an environmentally friendly and safe fiber preparation method, and improves the hygroscopicity and wear comfort of fibers.

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Abstract

The invention provides a preparation method of coconut shell functional composite fibers. The preparation method comprises the following steps: respectively carrying out modification treatment on lignin, lauric acid and plant polyphenol extracted from waste coconut shells and coconut meat; the preparation method comprises the following steps: firstly, carrying out quaternization modification on lignin, and then carrying out hydrophilic modification on lauric acid and plant polyphenol; mixing quaternized lignin, modified plant polyphenol and modified lauric acid powder, grinding, dispersing and coating to obtain modified powder; blending the modified powder and PBT slices, and then extruding through a double-screw extruder to complete granulation of functional master batches; the functional master batch and the conventional PET slices are dried respectively, then the functional master batch is added into the conventional PET slices according to the mass ratio of 5-7%, melt spinning is conducted, and the coconut shell functional composite fiber is obtained. Dacron is modified through coconut shell waste extraction components, the moisture regain of the prepared composite fiber reaches 1.8 or above, waste recycling is achieved, and the composite function effect of the polyester fiber is further improved.
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