Modified polylactic acid fiber excellent in performance

A polylactic acid fiber, polylactic acid technology, applied in the direction of fiber processing, fiber chemical characteristics, single-component polyester rayon, etc., can solve the problems of poor thermal stability, poor moisture absorption, poor wear resistance, etc., and achieve heat resistance. Good, improved hygroscopicity, soft feel

Active Publication Date: 2015-08-05
CHANGXING YONG XIN TEXTILE PRINTING DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a polylactic acid fiber with good hygroscopicity, improved thermal stability and soft and comfortable hand feeling, aiming at the disadvantages of poor hygroscopicity and easy hydrolysis resulting in difficult spinning, poor wear resistance and poor thermal stability of the polylactic acid fiber in the prior art. , fully biodegradable modified polylactic acid fiber with good spinning performance, friction resistance and easy dyeing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A modified polylactic acid fiber, which is prepared by the following method:

[0047] (1) Add the raw materials in the following parts by weight into the high-speed mixer, and obtain the modified polylactic acid mixture after high-speed dispersion:

[0048] 70 parts of PDLLA polylactic acid;

[0049] 15 parts of PLLA polylactic acid;

[0050] 0.5 parts of hydroxypropyl starch;

[0051] 12 parts of cellulose diacetate;

[0052] 1 part of nano tourmaline powder;

[0053] 0.5 part of nanometer talcum powder;

[0054] 0.8 parts of chitosan powder;

[0055] 0.2 part of nanometer montmorillonite powder;

[0056] (2) melt blending and extruding the uniformly mixed modified polylactic acid mixture through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and vacuum-dry;

[0057] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 70 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix evenly,...

Embodiment 2

[0060] A modified polylactic acid fiber, which is prepared by the following method:

[0061] (1) Add the raw materials in the following parts by weight into the high-speed mixer, and obtain the modified polylactic acid mixture after high-speed dispersion:

[0062] 65 parts of PDLLA polylactic acid;

[0063] 20 parts of PLLA polylactic acid;

[0064] 0.5 parts of hydroxypropyl starch;

[0065] 12 parts of cellulose diacetate;

[0066] 1 part of nano tourmaline powder;

[0067] 0.5 part of nanometer talcum powder;

[0068] 0.8 parts of chitosan powder;

[0069] 0.2 part of nanometer montmorillonite powder;

[0070] (2) melt blending and extruding the uniformly mixed modified polylactic acid mixture through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and vacuum-dry;

[0071] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 70 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix evenl...

Embodiment 3

[0074] A modified polylactic acid fiber, which is prepared by the following method:

[0075] (1) Add the raw materials in the following parts by weight into the high-speed mixer, and obtain the modified polylactic acid mixture after high-speed dispersion:

[0076] 75 parts of PDLLA polylactic acid;

[0077] 10 parts of PLLA polylactic acid;

[0078] 0.5 parts of hydroxypropyl starch;

[0079] 12 parts of cellulose diacetate;

[0080] 1 part of nano tourmaline powder;

[0081] 0.5 part of nanometer talcum powder;

[0082] 0.8 parts of chitosan powder;

[0083] 0.2 part of nanometer montmorillonite powder;

[0084] (2) melt blending and extruding the uniformly mixed modified polylactic acid mixture through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and vacuum-dry;

[0085] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 70 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix evenl...

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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PUM

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Abstract

The invention discloses a modified polylactic acid fiber excellent in performance. The modified polylactic acid fiber is prepared by use of a method and the method comprises the steps of adding such raw materials as PDLLA polylactic acid, PLLA polylactic acid, hydroxypropyl starch, cellulose diacetate, nano tourmaline powder, nano talcum powder, chitosan powder and nano montmorillonoid powder to a high-speed mixer, and dispersing at a high speed to obtain a modified polylactic acid mixture, forming a modified polylactic acid master batch from the evenly mixed modified polylactic acid mixture by virtue of melt blending and extruding in a twin-screw extruder, and drying in vacuum, feeding the modified polylactic acid functional master batch slices and the vacuum-dried common polylactic acid slices into the high-speed mixer for evenly mixing, and spinning the mixture by use of a quinquangular spinneret orifice on a melt spinning machine, thereby obtaining the modified polylactic acid fiber.

Description

technical field [0001] The invention relates to a modified polylactic acid fiber with excellent performance, which belongs to the field of polymer material modification. Background technique [0002] The raw material of polylactic acid fiber (PLA) is lactic acid, which is made from corn starch, also known as corn fiber, which is an eco-friendly material that is naturally degradable and does not cause "white pollution". Polylactic acid (PLA) is prepared by ring-opening polymerization of lactide under a certain temperature and a certain pressure through the action of a catalyst. [0003] With the increasing number of institutions and enterprises developing polylactic acid fibers at home and abroad, the application of polylactic acid fibers in the textile industry will become more and more extensive. Products obtained from polylactic acid have good biocompatibility and bioabsorbability, and good biodegradability, water absorption, bacteriostasis, flame retardancy and other pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/253D01D5/08
Inventor 柳伯强
Owner CHANGXING YONG XIN TEXTILE PRINTING DYEING
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