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A kind of ultra-high molecular weight polyethylene fiber and its preparation method

An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, fiber treatment, stretch spinning, etc., can solve the problems of fiber charging and affecting post-processing, etc., achieve fiber softness and eliminate static electricity , It is not easy to stick to sticks and roll around sticks

Active Publication Date: 2021-07-30
SURREY HI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention also aims at the above-mentioned problems existing in the prior art, and proposes a low-static ultra-high molecular weight polyethylene fiber and a preparation method thereof by using an antistatic agent different from the above-mentioned type, which not only improves high-strength and high-modulus, but also Solve the problem that the fiber affects post-processing due to electrification

Method used

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  • A kind of ultra-high molecular weight polyethylene fiber and its preparation method

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preparation example Construction

[0031] The invention provides a kind of preparation method of ultrahigh molecular weight polyethylene fiber, comprises the following steps:

[0032] (1) UHMWPE jelly collagen filaments are produced by gel spinning;

[0033] This process is well known to those skilled in the art, and specifically includes: sending the ultra-high molecular weight polyethylene spinning stock solution into a twin-screw extruder for blending and extrusion to obtain the first spinning solution, and then the first spinning solution The spinning solution is sent into the spinning box, and after drawing and rapid cooling and solidification, ultra-high molecular weight polyethylene jelly collagen filaments are obtained; wherein the weight-average molecular weight of the ultra-high molecular weight polyethylene used in the present invention is preferably 3 to 5×10 6 , the present invention more preferably adopts the first ultra-high molecular weight polyethylene and the second ultra-high molecular weight...

Embodiment 1

[0049] The preparation of embodiment 1 ultra-high molecular weight polyethylene fiber

[0050] a. UHMWPE 150D jelly collagen filaments are prepared by gel spinning method;

[0051] b. After the jelly collagen filaments are balanced, they are pre-drawn, extracted, and dried in sequence, and then thermally drawn at no less than three levels to obtain 150D fibers.

[0052] c. The obtained fiber passes through a coating roller with an antistatic bath, then passes through a hot box, and heat-sets while drying to obtain a 150D product of ultra-high molecular weight polyethylene low-static fiber.

[0053] The bath liquid is a mixture of antistatic liquid and water. The antistatic liquid is a quaternary ammonium salt cationic high-efficiency antistatic agent consisting of 30% dodecyldimethylethylammonium bromide, dodecyldimethylhydroxyl Ethyl ammonium chloride 30% and didodecyl dimethyl ammonium chloride 40%, the upper solution concentration is 0.3%, the roller surface of the coating...

Embodiment 2

[0054] The preparation of embodiment 2 ultra-high molecular weight polyethylene fibers

[0055] The processes of a and b are the same as those in Example 1 to obtain 200D fibers.

[0056] c. The process is the same as in Example 1, but the concentration of the liquid is 0.5%, and the liquid speed of the coating roller is 6m / min; the 200D product of the ultra-high molecular weight polyethylene low-static fiber. .

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Abstract

The invention discloses a preparation method of ultra-high molecular weight polyethylene fibers, which comprises the following steps: (1) preparing ultra-high molecular weight polyethylene jelly filaments by using a gel spinning method; (3) Pre-stretch, extract, dry and carry out no less than three-stage hot-drawing of the jelly collagen filaments after the equilibrium static treatment, and while hot-drawing, make ultra-high-molecular-weight polyethylene The jelly collagen filaments pass through a coating roller with an antistatic agent aqueous solution; (4) drying to obtain ultra-high molecular weight polyethylene fibers. The ultra-high molecular weight polyethylene fiber prepared by the method of the invention not only improves high strength and high modulus, but also solves the problem that the post-processing of the fiber is affected by charging, and has low static electricity.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, and in particular relates to an ultra-high molecular weight polyethylene fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene fiber (UHMWPE for short), also known as high-strength and high-modulus polyethylene fiber, refers to a high-performance fiber made of polyethylene with a relative molecular weight of more than 1 million through spinning, extraction, drying and super-stretching. fiber. Fiber-reinforced composite materials made of ultra-high molecular weight polyethylene fibers have the advantages of light weight, impact resistance, and high dielectric properties, and are widely used in aerospace, sea defense, weaponry, and daily industrial fields. [0003] In the prior art, gel-spinning technology is usually used to prepare ultra-high molecular weight polyethylene fibers. This technology usually uses polyethylene with a r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/04D06M13/08D06M13/262D06M13/463D01D5/16D01D10/06D01D10/02
CPCD01D5/16D01D10/02D01D10/06D01F6/04D06M13/08D06M13/085D06M13/262D06M13/463
Inventor 许海霞辛春荣吴喜龙张振雷李自学
Owner SURREY HI TECH INC
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