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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 area. The strength uniformity of the finished fiber is poor, and because the hard component is a fiber with a relatively large length and diameter, the friction resistance in the direction parallel to the fiber is not high, and the overall performance is poor quality stability

Method used

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preparation example Construction

[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, comprising the following steps:

[0037] a) mixing hard fiber, hard fiber slag and mineral spirits to obtain mixed solution A;

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

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

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

Embodiment 1

[0068] (1) Add 50g of ceramic fiber, 375g of carbon fiber, 25g of silicon carbide whiskers 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 1. The ultra-high molecular weight polyethylene powder with a molecular weight distribution of 5.0 is added in 160kg 68# white oil, stirred at 80rpm and 105°C for 1.5h to obtain an ultra-high molecular weight polyethylene solution; then in the ultra-high molecular weight polyethylene solution Add the mixed solution A obtained in step (1) into the mixture, and stir at 85 rpm and 130° C. for 2.5 hours to obtain a spinning stock solution.

[0070] (3) The spinning stock solution is filtered through a 60-mesh filter with a pore size, and after spinning through a spinning box, the product is cooled in a water bath at 25° C. to obtain jelly yarn; then the jelly yarn is drawn with 4 times The stretch ratio is p...

Embodiment 2

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

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

[0074] (3) The spinning stock solution is filtered through a filter with a pore size of 70 meshes, and then the product is cooled in a water bath at 22° C. to obtain jelly silk; The stretching ratio is pre-drawn at 25°C, then extracted with white oil extractant, dried at 40°C, and finall...

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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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