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Preparation method and device for melt spinning of ultra-high molecular weight polyethylene

An ultra-high molecular weight, melt spinning technology, used in the field of melt spinning, can solve the problems of uneven thickness of the thread, the molecules cannot be rearranged, and the uniform distribution of the molecules cannot be guaranteed, and the process is simple and the melting effect is guaranteed. Effect

Active Publication Date: 2017-12-08
郑海云
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, for the melting technology of ultra-high molecular weight polyethylene, the silk produced by the melting process, in the melting process, due to the low melting point of ultra-high molecular weight polyethylene, it is easy to degrade when the temperature is high, and the molecular weight is low when the temperature is low. Complete rearrangement cannot be achieved, and the uniform arrangement of molecules cannot be guaranteed, resulting in uneven thickness of silk threads

Method used

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  • Preparation method and device for melt spinning of ultra-high molecular weight polyethylene
  • Preparation method and device for melt spinning of ultra-high molecular weight polyethylene

Examples

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Effect test

Embodiment 1

[0024] Such as figure 1 Shown, the preparation method and device of ultra-high molecular weight polyethylene melt spinning,

[0025] (1) Raw material extrusion treatment: the raw material is extruded to the melting zone through the sleeve-type die, and the inside of the sleeve-type die is vacuum. The sleeve-type die includes a sleeve and a screw inside the sleeve. There are several rifling lines, and the end of the sleeve is extended with a melting zone and a dense zone. The inside of the sleeve is a vacuum, and the temperature of the melting zone is 350 degrees. Under the continuous extrusion of subsequent raw materials, the melted raw materials pass through the dense zone. The wire hole at the lower end of the tube is extruded into a wire, and the dense area is a bent tube whose radius decreases linearly to the lower end;

[0026] (2) Silk thread curing treatment: the silk thread is cured by a warm water tank, and the water temperature in the warm water tank is 50 degrees. ...

Embodiment 2

[0030] Such as figure 2 Shown, the preparation method and device of ultra-high molecular weight polyethylene melt spinning,

[0031] (1) Raw material extrusion treatment: the raw material is extruded to the melting zone through the sleeve-type head. The sleeve-type head includes a sleeve and a screw inside the sleeve. There is a melting zone and a dense zone extending from the inside of the sleeve. The inside of the sleeve is vacuum, and the temperature of the melting zone is 360 degrees. Under the continuous extrusion of subsequent raw materials, the melted raw materials are extruded into silk threads through the outlet hole at the lower end of the dense zone. , the dense area is a bent tube and its radius decreases linearly to the lower end.

[0032] (2) Silk thread curing treatment: the silk thread is cured by a warm water tank, and the water temperature in the warm water tank is 50 degrees.

[0033] (3) Silk thread stretching treatment: the thread treated in step (2) is...

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Abstract

The invention discloses a preparation method and device of a polyethylene molten spun filament of ultra-high molecular weight. On the basis of a conventional extruder, the structure of the extruder is improved, an end part of a sleeve extends out of a melting region and a compaction region, a raw material is extruded, melted and extruded into a silk, the silk is cured, reheated and drawn into a finished filament. The integral structure and process are simple; when the extruder is in a continuous working mode, the sleeve is a vacuum section, and the temperature of a melting region is 350 DEG C, so the melting effect of the polyethylene can be effectively protected without degradation.

Description

technical field [0001] The invention relates to melt spinning, in particular to a preparation method and device for melt spinning of ultra-high molecular weight polyethylene. Background technique [0002] At present, for the melting technology of ultra-high molecular weight polyethylene, the silk produced by the melting process, in the melting process, due to the low melting point of ultra-high molecular weight polyethylene, it is easy to degrade when the temperature is high, and the molecular weight is low when the temperature is low. Complete rearrangement cannot be achieved, and the uniform arrangement of molecules cannot be guaranteed, resulting in uneven thickness of silk threads. Contents of the invention [0003] The invention provides a preparation method and device for melt spinning of ultra-high molecular weight polyethylene to solve the above problems. [0004] In order to solve the above-mentioned technical problems, a technical solution adopted in the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00D01D5/08
CPCD01D5/08D01D13/00
Inventor 俞金金
Owner 郑海云
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