Ultrahigh molecular weight polyethylene fiber and preparation method thereof

An ultra-high molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, fiber processing, stretch spinning, etc., can solve the problems of affecting post-processing, fiber electrification, etc., to eliminate static electricity, fiber softness , the effect of good social promotion and application value

Active Publication Date: 2017-05-31
SURREY HI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Ultrahigh molecular weight polyethylene fiber and preparation method thereof

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preparation example Construction

[0031] The present invention provides a method for preparing ultra-high molecular weight polyethylene fiber, which includes the following steps:

[0032] (1) The ultra-high molecular weight polyethylene frozen collagen yarn is prepared by the gel spinning method;

[0033] This process is well known to those skilled in the art, and specifically includes: feeding the ultra-high molecular weight polyethylene spinning dope into a twin-screw extruder for blending and extruding to obtain a first spinning solution, and then adding the first spinning solution. The spinning solution is fed into the spinning box, after being drawn and rapidly cooled to solidify, ultra-high molecular weight polyethylene frozen 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 In the present invention, it is more preferable to use the first ultra-high molecular weight polyethylene a...

Embodiment 1

[0049] Example 1 Preparation of ultra-high molecular weight polyethylene fiber

[0050] a. The ultra-high molecular weight polyethylene 150D frozen collagen yarn is prepared by the gel spinning method;

[0051] b. After the frozen collagen filament is balanced, it is pre-drawn, extracted, dried, and then hot-drawn at no less than three levels to obtain 150D fiber.

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

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

Embodiment 2

[0054] Example 2 Preparation of ultra-high molecular weight polyethylene fiber

[0055] The processes a and b are the same as 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; a 200D product of ultra-high molecular weight polyethylene low-static fiber. .

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Abstract

The invention discloses a preparation method of an ultrahigh molecular weight polyethylene fiber. The preparation method comprises the following steps: (1) preparing ultrahigh molecular weight polyethylene frozen collagen fibril by a gel-spinning method; (2) balancing and standing the frozen collagen fibril; (3) pre-drafting, extracting, drying and performing thermal-drafting not lower than level III in sequence on the balanced and stood frozen collagen fibril, and making the ultrahigh molecular weight polyethylene frozen collagen fibril pass through a coating roller carrying an anti-static agent aqueous solution while thermal-drafting is performed; (4) drying to obtain the ultrahigh molecular weight polyethylene fiber. By adopting the preparation method of the ultrahigh molecular weight polyethylene fiber, the strength and modulus are enhanced, and the problem of influence on post-machining since the fiber is electrified is solved; the ultrahigh molecular weight polyethylene fiber has low static electricity.

Description

Technical field [0001] The invention belongs to the technical field of fiber preparation, and particularly 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 high-modulus polyethylene fiber, refers to a high performance 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, maritime defense, weaponry, and daily industrial fields. [0003] In the prior art, the preparation of ultra-high molecular weight polyethylene fibers usually uses gel spinning technology. This technology usually uses polyethylene with a relative ...

Claims

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Application Information

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Patent Type & Authority Applications(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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