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Preparation method of anti-cutting polyethylene fibers

A polyethylene fiber, anti-cut technology, applied in the direction of fiber chemical characteristics, single-component polyolefin rayon, rayon manufacturing, etc., can solve the problems of environmental protection, long production cycle, high production cost, etc., to save resources, The effect of low production and processing cost and energy consumption reduction

Inactive Publication Date: 2018-07-13
HUNAN ZHONGTAI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, inorganic whiskers, silicon dioxide or organic fiber powder are added during swelling, and a large amount of white oil needs to be added as a solvent. The production cost is high, the production cycle is long, and it is not environmentally friendly.

Method used

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  • Preparation method of anti-cutting polyethylene fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Set the molecular weight to 3 x 10 6 8 kg of g / mol polyethylene powder and 0.08 kg of silica-based filler were stirred and mixed at room temperature at a stirring speed of 70 r / min to obtain a mixed raw material. The mixed raw materials are injected into the twin-screw extruder for blending and extrusion, and the extruded liquid is sprayed out through the spinneret hole and then cooled to obtain the raw filament. During the blending and extrusion process, the maximum temperature of the twin-screw extruder is controlled to be 260°C. The obtained raw silk was pre-stretched 1.5 times and then extracted with an extractant, then dried at 40°C for 0.5h, and finally high-stretched at a stretching temperature of 145°C, and cut-resistant polyethylene fibers were obtained after 40-fold stretching.

Embodiment 2

[0026] Set the molecular weight to 3 x 10 6 6 kg of polyethylene powder in g / mol and 0.8 kg of silica-based filler were stirred and mixed at room temperature at a stirring speed of 60 r / min to obtain a mixed raw material. The mixed raw materials are injected into the twin-screw extruder for blending and extrusion, and the extruded liquid is sprayed out through the spinneret hole and then cooled to obtain the raw filament. During the blending and extrusion process, the maximum temperature of the twin-screw extruder is controlled to be 260°C. The obtained raw silk was pre-drawn 1.5 times and then extracted with an extractant, then dried at 40°C for 0.5h, and finally high-stretched at a stretching temperature of 120°C, and cut-resistant polyethylene fibers were obtained after 25-fold stretching.

Embodiment 3

[0028] Set the molecular weight to 3 x 10 6 6 kg of g / mol polyethylene powder and 1.2 kg of silica-based filler were stirred and mixed at room temperature at a stirring speed of 85 r / min to obtain a mixed raw material. The mixed raw materials are injected into the twin-screw extruder for blending and extrusion, and the extruded liquid is sprayed out through the spinneret hole and then cooled to obtain the original filament. During the blending and extrusion process, the maximum temperature of the twin-screw extruder is controlled to be 320°C. The obtained raw silk was pre-drawn 1.5 times and then extracted with an extractant, then dried at 40°C for 0.5h, and finally high-stretched at a stretching temperature of 145°C, and cut-resistant polyethylene fibers were obtained after 30-fold stretching.

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PUM

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Abstract

The invention discloses a preparation method of anti-cutting polyethylene fibers. The method comprises the following steps: mixing ultrahigh molecular weight polyethylene with silicon dioxide to obtain a mixed raw material; putting the mixed raw material into a twin-screw extruder for spinning so as to obtain protofilaments; extracting the protofilaments, drying, and carrying out ultra-drawing soas to obtain the anti-cutting polyethylene fibers. The anti-cutting grade of fabric prepared by the method is proved to reach 7.84 or more after the fabric is tested according to European standard EN388. The method is simple in process, reduces the production cost, and can realize large-scale production; furthermore, the better cutting resistance is achieved without needing to compound other hardfibers, so that the comfort of the fiber product is improved.

Description

technical field [0001] The invention belongs to the field of high-performance fibers, and in particular relates to a preparation method of cut-resistant polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is also called high-strength high-modulus polyethylene fiber or elongated chain (ECPE) polyethylene fiber, which is composed of relative molecular weight in (1-6)×10 6 The polyethylene is obtained by spinning and super stretching. Compared with other fiber-reinforced composite materials, ultra-high molecular weight polyethylene fiber composites have lighter weight, better dielectric properties and impact resistance, so they are widely used in aerospace, sea defense, weaponry and other fields. [0003] In order to prevent the infringement of sharp objects, especially in the environment of overspeed movement and emergencies, the research and development of a high-cut-resistant fiber and its weaving (such as various milit...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10
CPCD01F1/10D01F6/46
Inventor 张远军高波吴传清林明清
Owner HUNAN ZHONGTAI SPECIAL EQUIP
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