High strength and easy-to-dye modified polylactic acid fiber

A technology of polylactic acid fiber and polylactic acid, applied in the direction of fiber chemical characteristics, conjugated synthetic polymer artificial filament, chemical post-treatment of synthetic polymer artificial filament, etc. Problems such as the influence of PLA fiber spinnability, etc., to achieve the effect of easy dyeing and simple raw materials

Inactive Publication Date: 2016-01-13
HUZHOU HAOMING TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies have not solved the shortcomings of polylactic acid fibers that are not easily dyed, and the spinnability of shaped PLA fibers will be affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A novel high-strength and easy-to-dye modified polylactic acid fiber is prepared by the following method:

[0030] (1) Prepare raw materials according to the following parts by weight, and then add them into a high-speed mixer to disperse evenly to obtain mixed raw materials of modified polylactic acid:

[0031] 68 parts of PDLLA polylactic acid;

[0032] 21 parts of PLLA polylactic acid;

[0033] 1 part hydroxypropyl starch;

[0034] 3 parts of cellulose diacetate;

[0035] 0.2 part of nanometer montmorillonite powder;

[0036] 0.2 parts of mica powder;

[0037] (2) Melt, blend and extrude the homogeneously mixed modified polylactic acid mixed raw materials through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and dry it in vacuum;

[0038] (3) Put 20 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried common polylactic acid slices into a high-speed mixer and mix evenly. The mixture is spun on a me...

Embodiment 2

[0045] A novel high-strength and easy-to-dye modified polylactic acid fiber is prepared by the following method:

[0046] (1) Prepare raw materials according to the following parts by weight, and then add them into a high-speed mixer to disperse evenly to obtain mixed raw materials of modified polylactic acid:

[0047] 69 parts of PDLLA polylactic acid;

[0048] 19 parts of PLLA polylactic acid;

[0049] 1.5 parts of hydroxypropyl starch;

[0050] 2 parts of cellulose diacetate;

[0051] 0.2 part of nanometer montmorillonite powder;

[0052] 0.3 parts of mica powder;

[0053] (2) Melt, blend and extrude the homogeneously mixed modified polylactic acid mixed raw materials through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and dry it in vacuum;

[0054] (3) Put 20 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried common polylactic acid slices into a high-speed mixer and mix evenly. The mixture is spun o...

Embodiment 3

[0061] A novel high-strength and easy-to-dye modified polylactic acid fiber is prepared by the following method:

[0062] (1) Prepare raw materials according to the following parts by weight, and then add them into a high-speed mixer to disperse evenly to obtain mixed raw materials of modified polylactic acid:

[0063] 68 parts of PDLLA polylactic acid;

[0064] 20 parts of PLLA polylactic acid;

[0065] 1.1 parts of hydroxypropyl starch;

[0066] 3 parts of cellulose diacetate;

[0067] 0.2 part of nanometer montmorillonite powder;

[0068] 0.2 parts of mica powder;

[0069] (2) Melt, blend and extrude the homogeneously mixed modified polylactic acid mixed raw materials through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and dry it in vacuum;

[0070](3) Put 20 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried common polylactic acid slices into a high-speed mixer and mix evenly. The mixture is spun on...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The present invention discloses a novel high strength and easy-to-dye modified polylactic acid fiber, which is prepared by the following method: adding a variety of raw materials into a high speed mixing machine, and conducting high speed dispersion to obtain a modified polylactic acid mixture; conducting melt blending and extrusion on the evenly mixed modified polylactic acid mixture by a double-screw extruder to obtain modified polylactic acid masterbatch, and conducting vacuum drying; conducting slicing and vacuum drying on the modified polylactic acid functional masterbatch, and slicing and adding ordinary polylactic acid into a high-speed mixer, and evenly mixing; spinning the mixture by a circular spinneret orifice in a melt spinning machine to obtain modified polylactic acid fiber, and then carrying out microbial modification and strictly controlling the fermentation parameters; and wetting the prepared modified polylactic acid fiber by spraying water, uniformly sprinkling a composite bacteria liquid, and fermenting under constant temperature of 38 DEG C for 38-43 h.

Description

technical field [0001] The invention relates to a high-strength and easy-to-dye modified polylactic acid fiber, which belongs to the field of textile materials. Background technique [0002] The raw material of polylactic acid fiber (PLA) is lactic acid obtained from cornstarch, so this fiber is also called corn fiber, which can be made from sugar beets or grains through glucose fermentation to reduce the cost of preparing lactic acid polymers. Polylactic acid with high molecular weight can be obtained by chemical polymerization of cyclic dimer of lactic acid or direct polymerization of lactic acid. Products made from polylactic acid have good biocompatibility and bioabsorbability, as well as bacteriostasis and flame retardancy, and PLA has the best heat resistance among degradable thermoplastic polymer materials. [0003] With the increasing number of institutions and enterprises developing polylactic acid fibers at home and abroad, the application of polylactic acid fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/08D01F8/14D01F1/10D01D5/08
Inventor 费雪纯
Owner HUZHOU HAOMING TEXTILE CO LTD
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