Cutting-resistant ultrahigh molecular weight polyethylene fiber and preparation method and use thereof

An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, fiber chemical characteristics, rayon manufacturing, etc., can solve the problem of low friction resistance, poor fiber strength uniformity, poor quality stability, etc. problems, to achieve the effect of improving friction resistance, uniform distribution, and high strength uniformity

Active Publication Date: 2017-04-05
BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cutting resistance of the ultra-high molecular weight polyethylene fiber obtained by the method is effectively improved, the hard component itself is prone to agglomeration because the hard component has a smaller particle size and a larger specific surface are

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0036] The present invention also provides a method for preparing the cut-resistant ultra-high molecular weight polyethylene fiber described in the above technical solution, which includes the following steps:

[0037] a) Mix hard fiber, hard fiber slag and solvent oil to obtain mixed solution A;

[0038] b) mixing the mixed solution A with an ultra-high molecular weight polyethylene dissolving solution to obtain a spinning dope;

[0039] c) Spinning, pre-drawing, extraction, drying and positive drawing of the spinning dope in sequence to obtain cut-resistant ultra-high molecular weight polyethylene fibers.

[0040] In the present invention, hard fibers, hard fiber slag and mineral spirits are mixed to obtain mixed liquid A. In the present invention, the hard fiber preferably includes one or more of ceramic fiber, carbon fiber and silicon carbide whisker, and more preferably a mixture of ceramic fiber, carbon fiber and silicon carbide whisker. In the present invention, the hard fiber...

Example Embodiment

[0067] Example 1

[0068] (1) Add 50g of ceramic fiber, 375g of carbon fiber, 25g of silicon carbide whisker and 2.7g of hard fiber slag into 1.8kg of 68# white oil, stir at 2500rpm until uniform, and obtain mixed solution A.

[0069] (2) The weight average molecular weight of 10kg is 4.2×10 6 , Ultra-high molecular weight polyethylene powder with a molecular weight distribution of 5.0 is added to 160kg 68# white oil, and stirred at 80 rpm and 105°C for 1.5 hours to obtain an ultra-high molecular weight polyethylene dissolving solution; The mixed solution A obtained in step (1) was added to the mixture, and stirred at 85 rpm and 130° C. for 2.5 hours to obtain a spinning dope.

[0070] (3) The spinning dope is filtered through a filter with a pore size of 60 mesh, and then spun through a spinning box. The product is cooled in a water bath at 25° C. to obtain jelly threads; then the jelly threads are drawn at 4 times The stretching ratio is pre-drawn at 25°C, and then extracted with ...

Example Embodiment

[0071] Example 2

[0072] (1) Add 50g of ceramic fiber, 385g of carbon fiber, 15g of silicon carbide whisker and 1.8g of hard fiber slag into 1.4kg of 68# white oil, stir at 2000rpm until uniform, and obtain mixed solution A.

[0073] (2) The 10kg weight average molecular weight is 3.5×10 6 , The ultra-high molecular weight polyethylene powder with a molecular weight distribution of 5.0 is added to 110kg 68# white oil, and stirred at 60 rpm and 100°C for 2 hours to obtain an ultra-high molecular weight polyethylene dissolving liquid; then in the ultra-high molecular weight polyethylene dissolving liquid The mixed solution A obtained in step (1) was added and stirred at 80 rpm and 120° C. for 3 hours to obtain a spinning dope.

[0074] (3) The spinning dope is filtered through a filter with a pore size of 70 mesh, and then spun through a spinning box. The product is cooled in a water bath at 22°C to obtain jelly filaments; then the jelly filaments are drawn at 5 times The stretching ...

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Abstract

The invention provides a cutting-resistant ultrahigh molecular weight polyethylene fiber and a preparation method and use thereof. The cutting-resistant ultrahigh molecular weight polyethylene fibers comprise ultrahigh molecular weight polyethylene fibers, and hard fibers and hard fiber slag dispersed in the ultrahigh molecular weight polyethylene fibers, and a mass ratio of the ultrahigh molecular weight polyethylene fibers, the hard fibers to the hard fiber slag is 100: (3-6): (0.001-0.18). Compared with the existing polyethylene fiber, the cutting-resistant ultrahigh molecular weight polyethylene fiber satisfies the cutting performance EN388 five level standards. Through use of the hard fiber slag, the hard fibers are uniformly dispersed in the ultrahigh molecular weight polyethylene so that the finished product fiber has high strength uniformity and high friction resistance.

Description

technical field [0001] The invention relates to the technical field of ultra-high molecular weight polyethylene fibers, in particular to a cut-resistant ultra-high molecular weight polyethylene fiber and its preparation method and application. Background technique [0002] Ultra-high molecular weight polyethylene fiber, also known as high-strength and high-modulus polyethylene fiber, refers to the fiber spun from polyethylene with a relative molecular weight of more than 1 million. Due to the advantages of light weight, impact resistance and high dielectric properties, ultra-high molecular weight polyethylene fibers are widely used in aerospace, sea defense, weaponry and daily industry. [0003] In the daily industrial field, ultra-high molecular weight polyethylene fibers are most often used to prepare products with cut-resistant functions, such as cut-resistant gloves, cut-resistant tents, cut-resistant ropes, etc. However, the cutting resistance of ultra-high molecular w...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10
Inventor 贺鹏黄兴良刘清华郭长明
Owner BEIJING TONGYIZHONG NEW MATERIAL TECH CORP
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