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Ultrahigh molecular weight polyethylene fiber stretching equipment and technology

A polyethylene fiber, ultra-high molecular weight technology, applied in the direction of stretch spinning, heat treatment of artificial filaments, etc., can solve the problems of unfavorable fiber evenness, thin neck phenomenon of primary fibers, and affecting the physical properties of fibers, etc., to achieve reduction Small heat loss, improved effectiveness and uniformity, and the effect of uniform pulling ratio

Active Publication Date: 2022-02-15
长青藤高性能纤维材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only has a long stretching tunnel and occupies a large area, but also takes time and effort in daily production inspection and exclusion, and has poor maneuverability, and it is also detrimental to the evenness of the fiber.
During the stretching process of the fiber, the longer stretching tunnel is more likely to cause the thin neck phenomenon of the primary fiber, which makes the phenomenon of uneven thickness of each fiber be amplified to a certain extent, which seriously affects the physical properties of the fiber

Method used

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  • Ultrahigh molecular weight polyethylene fiber stretching equipment and technology
  • Ultrahigh molecular weight polyethylene fiber stretching equipment and technology
  • Ultrahigh molecular weight polyethylene fiber stretching equipment and technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The as-spun fiber with a precursor of 16000D / 360F is stretched 20 times, and the fiber of 800D / 360F is obtained after stretching, and the number of stretching stages is 6.

[0049] Step 1: Set the drawing process parameters: according to the range of wire feeding speed in 0.5~6m / min and the range of wire feeding speed in 20~70m / min, the speed of wire feeding is preliminarily determined to be 3m / min, according to the drawing ratio 20. It can be determined that the speed of the filament is 60m / min, and as the number of stretching stages increases, the speed of the stretching roller 21 increases gradually. And according to the fiber stretching process, there is molecular internal stress in the fiber, when the fiber enters and exits the filament, it is stretched at a small multiple, and the stretching multiple of each level is between 1 and 3, so that the fiber can be drawn evenly Stretching, determine the speed ratio of two adjacent rollers in the first-stage stretching is...

Embodiment 2

[0072] 80-fold stretching is carried out on the as-spun fiber whose precursor is 16000D / 360F, and the fiber of 200D / 360F is obtained after stretching, and the number of stretching stages is 8.

[0073] Step 1: Set the drawing process parameters: according to the range of wire feeding speed in 0.5~6m / min and the range of wire feeding speed in 20~70m / min, the speed of wire feeding is preliminarily determined to be 0.8m / min. The multiple of 80 can determine that the speed of the filament is 64m / min, and as the number of stretching stages increases, the speed of the stretching roller 21 increases gradually. And according to the fiber stretching process, there is an intermolecular force in the fiber, when the fiber enters and exits the filament, it is stretched at a small multiple, and the stretching ratio of each level is between 1 and 3, which can make the fiber Stretch evenly, determine the speed ratio of the two adjacent rollers for the first-stage stretching is 1.39, the speed...

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Abstract

The invention relates to ultra-high molecular weight polyethylene fiber stretching equipment and technology, and belongs to the technical field of ultra-high molecular weight polyethylene fiber stretching, the stretching equipment comprises a stretching box body, and a stretching roller set capable of achieving multi-stage stretching and a heat preservation cover wrapping the periphery of the stretching roller set are arranged in the stretching box body; a plurality of closed temperature control cavities are defined between the heat preservation cover and the stretching roller set, and each temperature control cavity is internally provided with a circulating temperature control system. The ultra-high molecular weight polyethylene fiber stretching equipment and technology have the beneficial effects that multi-stage drawing can be realized while fibers are accurately heated in a drawing channel in a partitioned manner, the drawing interval is effectively shortened, the occupied area of the device is reduced, the effectiveness and uniformity of fiber stretching are improved, and the strength of the fibers is further improved.

Description

technical field [0001] The invention relates to the technical field of ultra-high molecular weight polyethylene fiber stretching, in particular to an ultra-high molecular weight polyethylene fiber stretching equipment and process. Background technique [0002] In the production process of ultra-high molecular weight polyethylene fiber, super-stretching can be regarded as the core of ultra-high molecular weight polyethylene fiber production. The primary fiber can only show its high strength, Excellent physical and chemical properties such as high modulus, high degree of orientation, and high crystallinity, but the machine components required for the super-stretching process are very long. [0003] As we all know, the super-stretching that is currently well-known in China adopts a 3- to 5-stage system, that is, several sets of stretching heat boxes and drafting rollers are combined to form. This method not only has a long stretching tunnel, occupies a large area, is time-cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/16D01D10/02
CPCD01D5/16D01D10/02
Inventor 包剑峰高刚
Owner 长青藤高性能纤维材料有限公司
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