A biological modification process of lactic acid fiber with good spinnability

A technology of lactic acid fiber and biomodification, applied in fiber treatment, fiber type, biochemical fiber treatment and other directions, can solve the influence of the spinnability of special-shaped PLA fibers, and does not solve the problems of polylactic acid fibers that are not easy to dye, and achieve spinnability. Good, good hygroscopicity, simple raw material effect

Active Publication Date: 2018-07-31
浙江逸蓓新材料科技有限公司
View PDF1 Cites 0 Cited by
  • 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

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of biological modification method of lactic acid fiber with good spinnability, its steps are as follows:

[0029] (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:

[0030] PLA polylactic acid 72 parts;

[0031] 3 parts of hydroxypropyl starch;

[0032] 2 parts of cellulose diacetate;

[0033] 1.6 parts of mica powder;

[0034] (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;

[0035] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix them evenly. The mixture is spun on a melt spinning machine through circular spinneret holes to obtain modified polylactic acid....

Embodiment 2

[0043] A kind of biological modification method of lactic acid fiber with good spinnability, its steps are as follows:

[0044] (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:

[0045] PLA polylactic acid 75 parts;

[0046] 2 parts of hydroxypropyl starch;

[0047] 3 parts of cellulose diacetate;

[0048] 1.1 parts of mica powder;

[0049] (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;

[0050] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix them evenly. The mixture is spun on a melt spinning machine through circular spinneret holes to obtain modified polylactic acid....

Embodiment 3

[0058] A kind of biological modification method of lactic acid fiber with good spinnability, its steps are as follows:

[0059] (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:

[0060] PLA polylactic acid 73 parts;

[0061] 3 parts of hydroxypropyl starch;

[0062] 2 parts of cellulose diacetate;

[0063] 1.5 parts of mica powder;

[0064] (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;

[0065] (3) Put 30 parts of modified polylactic acid functional masterbatch slices and 80 parts of vacuum-dried ordinary polylactic acid slices into a high-speed mixer and mix them evenly. The mixture is spun on a melt spinning machine through circular spinneret holes to obtain modified polylactic acid. ...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a biomodification method of lactic acid fiber with good spinnability, which is prepared by the following method: adding various raw materials into a high-speed mixer, and dispersing at high speed to obtain a modified polylactic acid mixture; uniformly mixing The modified polylactic acid mixture is melt blended and extruded through a twin-screw extruder to obtain a modified polylactic acid masterbatch, and vacuum dried; the modified polylactic acid functional masterbatch chips and vacuum dried ordinary polylactic acid chips are put into high-speed mixing The mixture is evenly mixed in the machine, and the mixture is spun on a melt spinning machine through circular spinneret holes to obtain modified polylactic acid fibers, and then undergoes microbial modification and strictly controls the fermentation parameters. Different from ordinary constant temperature fermentation, certain instantaneous heat treatment is adopted. The purpose of shortening the fermentation time and obtaining an unexpected modification effect can be achieved.

Description

technical field [0001] The invention relates to a biological modification process of lactic acid fiber with good spinnability, which belongs to the textile field. 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 fib...

Claims

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D06M16/00D06M101/32
Inventor 费雪纯
Owner 浙江逸蓓新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap