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Extraction process for ultrahigh molecular weight polyethylene fibre

A polyethylene fiber, ultra-high molecular weight technology, applied in the direction of single-component polyolefin rayon, fiber treatment, rayon physical therapy, etc., can solve the problems of intermittent operation, poor production continuity, and difficult fiber filaments. , to achieve the effect of increasing the extraction speed, increasing the drafting speed and reducing the residual content

Inactive Publication Date: 2009-09-09
SURREY HI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Manufacturing ultra-high molecular weight polyethylene fibers is a complex technical work. The molecular weight of polyethylene used to manufacture ultra-high molecular weight polyethylene fibers can be as high as 2 million to 5 million or even higher. The macromolecular chains are in a highly entangled state, making processing difficult. It is very large, and it is more difficult to produce high-quality fiber filaments. There is no ready-made mature technology available in China
[0004] At present, high-strength and high-modulus ultra-high molecular weight polyethylene fibers are all short-segment fibers, and the lengths vary, so the production length cannot be guaranteed. The application of short-length fibers is limited to the manufacture of bulletproof products, etc. When manufacturing rope products and fabrics, There will be problems of poor production continuity and a lot of waste
At the same time, the existing ultra-high molecular weight polyethylene fiber production process has problems such as long lines, intermittent operations in some processes, complex and difficult to control processes, high broken wire rate, low production efficiency, high energy consumption, and difficult to control product quality. The production and application of ultra-high molecular weight polyethylene fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] An extraction process for ultra-high molecular weight polyethylene fibers, the extraction process adopts multi-stage continuous extraction technology and three-dimensional ultrasonic vibration to promote extraction technology, the extraction agent is a compound alkane extraction agent, the compound alkane extraction agent includes hexane and octane (volume ratio 1:1), using the gradient distribution of the solvent content in the extractant, a set of high-efficiency extraction process is formed, which improves the extraction speed, effectively reduces the residual content of solvent in the fiber filament, and improves the drawing speed for the drawing process And lay a good foundation for product quality.

Embodiment 2

[0014] An extraction process for ultra-high molecular weight polyethylene fibers. The extraction process adopts multi-stage continuous extraction technology and three-dimensional ultrasonic vibration-promoted extraction technology. The extraction agent is a compound alkane extractant. The compound alkane extractant includes octane, petroleum ether and hexane (volume ratio 1:0.5:0.5), using the gradient distribution of solvent content in the extractant, a set of high-efficiency extraction process has been formed, which improves the extraction speed and effectively reduces the residual content of solvent in the fiber filaments. Improve drawing speed and product quality to lay a good foundation.

Embodiment 3

[0016] An extraction process for ultra-high molecular weight polyethylene fibers. The extraction process adopts multi-stage continuous extraction technology and three-dimensional ultrasonic vibration-promoted extraction technology. The extraction agent is a compound alkane extraction agent. The compound alkane extraction agent includes decane, octane and petroleum ether (volume ratio 1:0.8:0.2), using the gradient distribution of solvent content in the extractant, a set of high-efficiency extraction process has been formed, which improves the extraction speed and effectively reduces the residual content of solvent in the fiber filaments. The process improves the drafting speed and product quality and lays a good foundation.

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Abstract

The invention relates to an extraction process for an ultrahigh molecular weight polyethylene fibre. The extraction process adopts multilevel continuous extraction technology and three-dimensional ultrasonic vibration extraction accelerating technology; and an extracting agent is a compounded alkane extracting agent. Compared with the prior art, the extraction process adopts the novel compounded alkane extracting agent and the three-dimensional ultrasonic vibration extraction accelerating technology, adopts multilevel continuous extraction, utilizes the gradient distribution of the solvent content in the extracting agent to form a set of the high-efficiency extraction process, improves the extracting speed, effectively reduces the residual content of the solvent in fibre yarn, establishes a good foundation for improving the drawing speed in the drawing procedure and the product quality, and can obtain the high-strength (more than 35 g / d) ultrahigh molecular weight polyethylene fibre.

Description

technical field [0001] The invention relates to ultra-high molecular weight polyethylene fibers, in particular to an extraction process for ultra-high molecular weight polyethylene fibers. Background technique [0002] With the progress of mankind and the rapid development of science and technology in recent years, the demand for special fibers from all walks of life is increasing day by day. After carbon fiber and aramid fiber, ultra-high molecular weight polyethylene fiber (UHMWPE) has attracted much attention due to its excellent performance and broad application prospects, and has made great progress in recent years. Ultra-high molecular weight polyethylene fiber has high strength, high modulus and excellent impact resistance, wear resistance and weather resistance, so it is widely used in military engineering, aerospace engineering, infrastructure engineering, agricultural machinery, ship cables, entertainment, etc. fields, and its scope of application is becoming wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D10/00D01D5/06D01F6/04
Inventor 辛志荣董建东辛春荣
Owner SURREY HI TECH INC
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