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Process for evenly preparing spinning by using ultrahigh molecular weight polyethylene high-shearing solution

A technology of ultra-high molecular weight and polyethylene, applied in the direction of spinning solution preparation, single-component polyolefin artificial filament, wet spinning, etc., to achieve the effects of high fiber mechanical properties, good production environment and low production energy consumption

Active Publication Date: 2010-06-09
NINGBO DACHENG ADVANCED MATERIAL
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AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the defects of existing production methods, and provides a new method for producing ultra-high-strength, high-modulus fibers

Method used

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Embodiment Construction

[0024] The specific implementation steps of the process technology of the present invention are as follows:

[0025] The first step of the two-step spinning production technology of this technology is:

[0026] 1.1 Use ultra-high molecular weight polyethylene with a molecular weight of 1 to 5 million, and use hydrogenated naphthalene and alkanes, such as paraffin oil, tetralin or white oil, as the solvent (mineral intrinsic viscosity is 5 to 80#).

[0027] 1.2 Ultra-high molecular weight polyethylene is transported to the kettle-type stirring mixer by automatic metering, and the solvent is automatically metered to the kettle-type stirring mixer for mixing. The mixing match is that the weight percentage of ultra-high molecular weight polyethylene is 5~ 20%, 80-95% solvent, continuous mixing at room temperature to form a uniform suspension. The matching ratio can be adjusted according to fiber specifications.

[0028] 1.3 Connect the mixed UHMWPE suspension with a pipeline to the high-...

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Abstract

The invention discloses a production technique for evenly preparing two-step spinning by using ultrahigh molecular weight polyethylene high-shearing solution, comprising the following steps of: matching the ultrahigh molecular weight polyethylene with a solvent according to a certain proportion; preparing ultrahigh molecular weight polyethylene emulsifier solution through a high-shearing method; extruding liquid through a double screw to squeeze spinning jets; soaking a gelation precursor with frozen water; and preparing a polyethylene fiber with high intensity and high modulus through carbon-hydrogen cleaning, extraction and stretching, drying and multiple heat-stretching. The invention has the advantages of high fiber mechanical property, small fiber deviation, low energy consumption of production, favorable production environment, short production technique process and the like.

Description

1. Technical Field: [0001] The invention relates to a production technology for uniformly preparing two-step spinning from an ultra-high molecular weight polyethylene high-shear solution. The preparation of ultra-high molecular weight polyethylene uniform spinning solution is one of the keys to polyethylene jelly spinning, which directly affects the spinnability of ultra-high molecular weight polyethylene and the uniformity and mechanical properties of the fiber obtained, energy saving and consumption reduction And other important factors. This technology makes the spinning solution of ultra-high molecular weight polyethylene and solvent milled at room temperature uniform through high shear, can effectively control the oxidative degradation of molecular weight, and can meet different specifications of ultra-high molecular weight polyethylene fibers and high drawing ratios. It can greatly reduce the phenomenon of spinning rolls, broken filaments, wool and uneven size caused by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01D1/02D01D10/02
CPCD01D1/02D01D10/00D01D5/06D01F6/04
Inventor 陈成泗许史安陈冠军
Owner NINGBO DACHENG ADVANCED MATERIAL
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