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Method for preparing ultra-high molecular weight polyethylene fibers

A technology of ultra-high molecular weight polyethylene fibers, which is applied in the direction of single-component polyolefin artificial filaments, spinning solution preparation, dry spinning, etc., can solve the problem of reducing the effectiveness of stretching and reducing the mechanical properties of ultra-high molecular weight polyethylene fibers. Performance and other issues

Inactive Publication Date: 2012-01-04
杨珍芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Under the existing technology, in the process of preparing ultra-high molecular weight polyethylene fibers, when drying the jelly collagen filaments, it is necessary to apply a certain tension to the jelly collagen filaments to make the extractant volatilize more effectively, so there will be A certain internal stress, at this time, if the raw silk is directly subjected to subsequent thermal stretching, the stress will continue to remain inside the raw silk. These internal stresses will not only reduce the effectiveness of stretching during super thermal stretching, but also will Ultimately reduce the mechanical properties of UHMWPE fibers

Method used

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  • Method for preparing ultra-high molecular weight polyethylene fibers
  • Method for preparing ultra-high molecular weight polyethylene fibers
  • Method for preparing ultra-high molecular weight polyethylene fibers

Examples

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Effect test

Embodiment 1

[0047] see figure 1 , figure 1 For the flow chart of the method for preparing ultra-high molecular weight polyethylene fibers in this example, follow the steps below:

[0048] S101, the dried ultra-high molecular weight polyethylene jelly collagen filaments are collected and placed in a silk barrel for 16 hours. During the standing treatment, air at a temperature of 12° C. is introduced into the silk barrel.

[0049] Then the jelly collagen filaments after static treatment are sequentially fed into the godet roll machine with a guide roller temperature of 100°C, the first hot tunnel, the first drafting machine, the second hot tunnel, and the second drafting machine to carry out the following steps:

[0050] S102, apply the first-stage positive drafting with a draft ratio of 5 times to the jelly collagen filament by the first drafting machine, the length of the first hot shaft is 5 meters, and the temperature is 100 ° C. The temperature of the traction roller of the first draf...

Embodiment 6

[0057] see figure 2 , figure 2 For the flow chart of the method for preparing ultra-high molecular weight polyethylene fibers in this example, follow the steps below:

[0058] S101, the dried ultra-high molecular weight polyethylene jelly collagen filaments are collected and placed in a silk barrel for 18 hours. During the static treatment, air at a temperature of 10° C. is introduced into the silk barrel.

[0059] Then the ultra-high molecular weight polyethylene jelly collagen filaments after static treatment are fed into the godet roller machine with a guide roller temperature of 100°C, the first hot tunnel, the first drafting machine, the second hot tunnel, and the second drafting machine. machine, the third hot tunnel, and the third drafting machine carry out the following steps:

[0060] S102, apply the first-stage positive drafting of 6.8 times to the jelly collagen filament by the first drafting machine, the length of the first hot tunnel is 5 meters, the temperatu...

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Abstract

The invention discloses a method for preparing ultra-high molecular weight polyethylene fibers, which comprises the following steps: (a) standing dried ultra-high molecular weight polyethylene jelly protofilaments at 1-25 DEG C; and applying at least two stages of positive drawing which is 2-60 times of the total drawing to the stood jelly protofilaments at 70-160 DEG C to obtain the ultra-high molecular weight polyethylene fibers. In the drying process, since the ultra-high molecular weight polyethylene jelly protofilaments are subjected to the action of tensile force, the interior of the protofilaments can produce internal stress; and the invention enables the protofilaments to be shrunk by standing the protofilaments at a certain temperature so that the internal stress of the protofilaments can be effectively removed and the protofilaments have better drawing performance, thereby manufacturing the ultra-high molecular weight polyethylene fibers with high performance.

Description

technical field [0001] The invention relates to a method for preparing fibers, in particular to a method for preparing ultrahigh molecular weight polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene fiber is also called high-strength, high-modulus polyethylene (UHMWPE) fiber or extended chain polyethylene (ECPE) fiber, which refers to the relative molecular mass of (1~7)×10 6 Polyethylene, an ultra-high molecular weight polyethylene fiber made by spinning and super-stretching. It is the third generation of high-performance fiber after carbon fiber and aramid fiber. [0003] Compared with other fiber-reinforced composite materials, ultra-high molecular weight polyethylene fiber-reinforced composite materials have the advantages of light weight, impact resistance, and high dielectric properties, and play a pivotal role in aerospace, sea defense, weaponry and other fields. At the same time, ultra-high molecular weight polyethylene fibers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/04D01D5/12D01D1/02D01F6/04
Inventor 周成程
Owner 杨珍芬