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Hydrophilic polypropylene monofilament and production method thereof

A production method and hydrophilic technology, which can be applied in the direction of single-component polyolefin rayon, rayon manufacturing, filament/thread forming, etc. The effect of increasing hydrophilic properties

Inactive Publication Date: 2015-09-02
马海燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the polypropylene molecule does not contain polar groups and the hydrophilic type is poor, which limits the application field of polypropylene. In order to overcome this shortcoming, it is necessary to expand the application range of polypropylene and carry out hydrophilic modification of polypropylene materials. Improve

Method used

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  • Hydrophilic polypropylene monofilament and production method thereof

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Embodiment 1

[0017] The invention provides a hydrophilic polypropylene monofilament, comprising: polypropylene and a hydrophilic modification aid, the hydrophilic modification aid comprising: polypropylene grafted acrylic acid copolymer, thermoplastic elastic polyester, In the ethylene-acrylic acid copolymer, the content of the hydrophilic modification auxiliary agent is 10%-30%.

[0018] The hydrophilic polypropylene monofilament provided by the present invention is made into a monofilament through steps such as melt spinning by adding various hydrophilic modification aids to polypropylene, and the monofilament made has better hydrophilicity Performance, making the use of polypropylene monofilament wider.

[0019] Optionally, the diameter of the monofilament is 0.08-0.3mm, the strength of the monofilament is ≥3.5cN / dtex, and the elongation at break is 20%-40%; the produced hydrophilic polypropylene monofilament is thinner and has a relatively High strength and elongation at break can be ...

Embodiment 2

[0021] Such as figure 1 Shown, the present invention also provides a kind of production method of hydrophilic polypropylene monofilament, comprises steps:

[0022] S101: Mix the polypropylene with the hydrophilic modification auxiliary raw material, melt the mixed raw material, and extrude through an extruder for spinning;

[0023] S102: cooling the spun monofilament;

[0024] S103: Stretching the cooled monofilament;

[0025] S104: Heat setting the stretched monofilament.

[0026] The above production method mixes the raw materials, melts and spins the mixed raw materials, and cools, stretches and heat-sets the monofilaments coming out of the extruder. In each step, the monofilaments are drawn by specific temperatures and methods. Stretching and other treatments to determine the monofilament strength and elongation at break of the hydrophilic polypropylene monofilament.

[0027] Optionally, the spinning temperature in step S101 is: 285-300°C; spinning at this temperature ...

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Abstract

The invention provides a hydrophilic polypropylene monofilament and a production method thereof. The hydrophilic polypropylene monofilament comprises polypropylene and a hydrophilic modified additive, wherein the hydrophilic modified additive comprises a polypropylene grafted acrylic acid copolymer, thermoplastic elastic polyester and an ethylene acrylic acid copolymer; the content of the hydrophilic modified additive is 10 to 30 percent. The production method comprises the following steps of S101: mixing the polypropylene with raw materials of the hydrophilic modified additive, fusing the mixed raw materials, and extruding the raw materials by using an extruder for spinning; S102: cooling spun monofilaments; S103: drawing the cooled monofilament; S104: thermosetting the drawn monofilament. According to the hydrophilic polypropylene monofilament and the production method thereof provided by the invention, a certain mass of hydrophilic modified additive is added in the polypropylene, and is treated by certain steps and specific temperature, so that the hydrophilic property of the polypropylene monofilament is greatly improved.

Description

technical field [0001] The invention relates to a monofilament, in particular to a hydrophilic polypropylene monofilament and a production method thereof. Background technique [0002] Polypropylene has excellent chemical stability and thermal insulation, and is widely used. The mechanical strength of the fiber spun from it is comparable to that of nylon. The hygiene and safety during production and use are due to nylon and polyester. Its cost is much lower than other chemical fibers. [0003] However, the polypropylene molecule does not contain polar groups and the hydrophilic type is poor, which limits the application field of polypropylene. In order to overcome this shortcoming, it is necessary to expand the application range of polypropylene and carry out hydrophilic modification of polypropylene materials. Improve. Contents of the invention [0004] A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the inve...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D01D5/088
Inventor 马海燕
Owner 马海燕
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