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Polylactide metal fiber

A metal fiber, polylactic acid technology, applied in the direction of fiber chemical characteristics, conjugated synthetic polymer rayon, conjugated rayon, etc., can solve the limitations of processing and application, low melting point, high molecular weight polyester synthesis difficulties, etc. problem, to achieve the effect of good mechanical strength

Inactive Publication Date: 2010-05-05
JIANGSU YINGXIANG FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the degradable aliphatic polyester fiber also has its own shortcomings, such as low melting point, low strength, and difficult synthesis of high molecular weight polyester, which limits its processing and application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Synthesis of high-molecular-weight polylactic acid: the raw material is lactide, the catalyst is stannous chloride, and the amount of stannous chloride is 600×10 of the lactide amount -6 , the continuous polymerization process is completed through four reactors, and the synthesis process of polylactic acid:

[0014] condition

Reactor I

Reactor II

Reactor III

Reactor IV

Reaction temperature / ℃

140～150

160～180

230～240

230～240

Reaction pressure / Pa

1.4×10 5

1.0×10 5

2700

70

Residence time / min

70

70

70

130

[0015] The high-molecular-weight polylactic acid melt obtained by polymerization is directly spun, and after initial spinning, one-stage stretching, two-stage stretching, crimping, and finally shaping into filaments, the initial spinning temperature is 245°C, and the speed is 1000-2000m / min. The draw ratio of stretching is 2.5-3.5, the temperature is 120°C, a...

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PUM

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Abstract

The invention relates to a polylactide metal fiber fabric which is characterized in that polylactide with high molecular weight is synthesized firstly, metal fiber and the polylactide are blended and then spun to obtain the polylactide with a specification of 1.56-1.65detx*38 mm and the metal fiber with a spinning specification of 1.56-2.65 detx*38 mm, and the degradable metal fabric is weaved by the procedures of blowing, cotton carding, drawing, spinning, weaving, dyeing and the like.

Description

technical field [0001] The invention relates to the field of fiber fabric preparation, in particular to a polylactic acid metal fiber fabric method. Background technique [0002] As people pay more and more attention to environmental protection, biodegradable polymer materials (plastics, rubber, fibers, etc.) have become a research hotspot in countries all over the world. There are more and more types of degradable fiber fabrics, and their applications involve many fields such as medical, clothing, fishery, construction, hygiene, decoration, and industrial processing. Among the degradable polymer materials, aliphatic polyester can be synthesized by chemical process, has industrialization and industrialization prospects, and is also the most researched. The melting point of polylactic acid is higher than 150°C, and it is not easy to decompose, melt and deform under normal temperature and pressure, so it has good application potential. However, the degradable aliphatic polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/18D01D5/098
Inventor 徐关祥
Owner JIANGSU YINGXIANG FIBER
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