Toughening type conductive polylactic acid fiber and preparation method and application thereof

A lactic acid fiber, conductive polymer technology, applied in conductive/antistatic filament manufacturing, melt spinning, stretch spinning, etc., can solve the problems of low breaking strength and elongation at break of conductive fibers, poor product quality, etc. Achieve the effect of improving breaking strength and elongation at break, ensuring product quality, and expanding the scope of application

Inactive Publication Date: 2014-01-08
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned problems, the present invention provides a toughened conductive polylactic acid fiber and its preparation method and application, to overcome the low breaking strength and elongation at break of the conductive fiber made in the prior art, which leads to poor pro

Method used

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  • Toughening type conductive polylactic acid fiber and preparation method and application thereof
  • Toughening type conductive polylactic acid fiber and preparation method and application thereof

Examples

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Embodiment 1

[0037] The toughened conductive polylactic acid fiber provided in Example 1 of the present invention is made of polylactic acid, polyamide elastomer and conductive material, and the mass ratio of the three is: polylactic acid: 60-90 parts, such as 60 parts, 63 parts , 70 parts, 80 parts, 88 parts, 90 parts, etc.; polyamide elastomer: 10~40 parts, such as 10 parts, 13 parts, 20 parts, 30 parts, 38 parts, 40 parts, etc.; conductive material: 0.1~9 parts parts, such as 0.1 parts, 0.5 parts, 1 part, 3 parts, 5 parts, 7 parts, 8 parts, 8.8 parts, 9 parts, etc.; among them, the viscosity-average molecular weight of polylactic acid is: 5×10 4 ~2×10 5 , such as 5×10 4 , 5.5×10 4 , 6×10 4 , 8×10 4 , 9×10 4 , 1×10 5 , 1.5×10 5 , 1.8×10 5 , 2×10 5 etc., the conductive material is carbon black, carbon nanotubes or graphene.

[0038] figure 1 It is a schematic flow chart of the preparation method of the toughened conductive polylactic acid fiber provided in Example 1 of the pres...

Embodiment 2

[0047] The toughened conductive polylactic acid fiber provided in Example 2 of the present invention is made of polylactic acid, polyamide elastomer and conductive material, and the mass ratio of the three is: polylactic acid: 60~90 parts, such as 60 parts, 61 parts , 73 parts, 81 parts, 89 parts, 90 parts, etc.; polyamide elastomer: 10~40 parts, such as 10 parts, 11 parts, 19 parts, 31 parts, 39 parts, 40 parts, etc.; conductive material: 0.1~9 parts parts, such as 0.1 parts, 0.2 parts, 0.8 parts, 1.3 parts, 4.5 parts, 6.7 parts, 7.8 parts, 8.9 parts, 9 parts, etc.; among them, the viscosity-average molecular weight of polylactic acid is: 5×10 4 ~2×10 5 , such as 5×10 4 , 5.1×10 4 , 6.5×10 4 , 8.3×10 4 , 9.3×10 4 , 1.1×10 5 , 1.3×10 5 , 1.9×10 5 , 2×10 5 etc., the conductive material is carbon black, carbon nanotubes or graphene.

[0048] figure 2 It is a schematic flow chart of the preparation method of the toughened conductive polylactic acid fiber provided in E...

Embodiment 3

[0056] The preparation method of the toughened conductive polylactic acid fiber provided in Example 3 of the present invention comprises the following steps:

[0057] 1) Provide 70 parts of polylactic acid, 30 parts of polyamide elastomer and 5 parts of carbon nanotubes.

[0058] 2) Dry 70 parts of polylactic acid in a vacuum oven at 90°C for 20 hours, dry 30 parts of polyamide elastomer in a vacuum oven at 65°C for 20 hours, and dry 5 parts of carbon nanotubes The drying process was performed in a vacuum oven at 100°C for 10 hours.

[0059] 3) Put polylactic acid, polyamide elastomer and carbon nanotubes into a high-speed mixer for 8 minutes of mixing operation, and then blend and granulate in a twin-screw blender. The granulation temperature is 200°C and the screw speed is 70rmp. Melt blending time is 10 minutes, obtains conductive masterbatch;

[0060] 4) Spin the conductive masterbatch on a melt spinning machine at a temperature of 230°C to obtain conductive polylactic a...

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Abstract

The invention discloses a toughening type conductive polylactic acid fiber and a preparation method and application thereof, belonging to the field of a high polymer material. The toughening type conductive polylactic acid fiber comprises the raw materials in mass ratio: 60-90 parts of polylactic acid, 10-40 parts of polyamide elastomer and 0.1-9 parts of conductive material. The polyamide elastomer is introduced into the toughening type conductive polylactic acid fiber and the mass ratio is 10-40 parts, meanwhile the preparation method is adopted for preparing, and therefore the problem that the conductive fiber prepared in the prior art has low breaking strength and elongation at break so that the quality of products is poor is solved. Thus, the breaking strength and elongation at break of the conductive polylactic acid fiber are increased, the quality of products using the conductive polylactic acid fiber is ensured, and the application range of the toughening type conductive polylactic acid fiber is expanded.

Description

technical field [0001] The invention relates to a conductive fiber and its preparation method and application, in particular to a toughened conductive polylactic acid fiber and its preparation method and application. [0002] Background technique [0003] my country is a big country of fiber production, and the output of synthetic fiber has ranked first in the world for thirteen consecutive years. The gross production value of fiber and its textiles accounts for about 10% of my country's GDP, and exports account for 1 / 4, which is very important in the national economy. status. However, the development of synthetic fibers in my country currently has the following problems: First, the development of synthetic fibers is restricted by resource shortages. More than 90% of the raw materials of synthetic fibers depend on petroleum, and the total amount of petroleum is constant but its consumption speed is accelerating. , will eventually lead to the depletion of oil, and synthetic f...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/12D01F1/09C08J3/22D01D5/08D01D5/12
Inventor 李旭明
Owner SHAOXING UNIVERSITY
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