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Prepn and application of jelly fiber of polyethylene in ultrahigh molecular weight

A technology of ultra-high molecular weight and jelly yarn, which is applied in the direction of single-component polyolefin artificial filament, filament/thread forming, textile and papermaking, etc., which can solve the stringent requirements of investment funds and environmental protection, high extraction cost and equipment investment Major problems, to achieve the effects of reducing production costs, ensuring safety, and saving energy

Inactive Publication Date: 2008-10-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages include high extraction cost, high recycling cost, large investment in equipment, flammability and explosion, or due to environmental protection or safety issues, it imposes strict requirements on investment funds and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Raw materials: Ultra-high molecular weight polyethylene jelly yarn produced by the spinning section, 240f, with an oil content of about 85%, and the number of bundled strands is 18; the tension of the oil pressure roller: 0.5kg / cm 2 , the extraction agent is hydrocarbon EXXSOL D-40, and the vapor pressure of the pretreatment bath is 0kg / cm 2 , the temperature of the pretreatment bath is 30°C, and it enters the stretching process after drying treatment (drying temperature). A stretching speed of 3.5m / min, stretching ratio: 3.5 times, ultrasonic extraction bath temperature 105 ℃, time 5 minutes, ultrasonic intensity 20w / m 2 , the secondary stretching speed is 13m / min, the stretching ratio is 3.7 times, and the stretching temperature is 125°C. The three-pass stretching speed is 29m / min, the stretching ratio is 2.23 times, and the stretching temperature is 135°C. The total stretching ratio is 29 times. Four heat setting temperature 145 ℃. The measured strength of the ul...

Embodiment 2

[0023] Raw materials: Ultra-high molecular weight polyethylene jelly yarn produced by the spinning section, 240f, with an oil content of about 85%, the number of bundled strands: 18 strands; the tension of the oil pressure roller is 0.5kg / cm 2 ; The extraction agent is hydrocarbon EXXSOL D-40, and the air pressure of the pretreatment bath is 0.5kg / cm 2 ; The temperature of the pretreatment bath is 30°C, and after drying treatment (drying temperature), it enters the stretching process. One stretching speed: 3.5m / min, stretching ratio: 3.5 times; ultrasonic extraction bath temperature 105°C, time 5 minutes, ultrasonic intensity: 25w / m 2 ; The second stretching speed is 13m / min, the stretching ratio is 3.7; the stretching temperature is 125°C. The three-pass stretching speed was 29 m / min, the stretching ratio was 2.23 times, and the stretching temperature was 135°C. The total stretching ratio is 29 times. Four heat setting temperature 145 ℃. The measured strength of the ultra...

Embodiment 3

[0025] Raw materials: Ultra-high molecular weight polyethylene jelly yarn produced by the spinning section, 240f / share, oil content about 85%, 18 strands for clustering; oil pressure roller tension 0.5kg / cm 2 ;Extraction agent is hydrocarbon EXXSOL D-40, pretreatment bath pressure: 1.0kg / cm 2 , the temperature of the pretreatment bath is 30°C; after drying treatment (drying temperature), it enters the stretching process. A stretching speed of 3.5m / min; a stretching ratio of 3.5 times; the temperature of the ultrasonic extraction bath is 105°C, the time is 5 minutes, and the ultrasonic intensity is 30w / m 2 , the secondary stretching speed is 13m / min, the stretching ratio is 3.7 times; the stretching temperature is 125°C. The three stretching speeds are 29 m / min, the stretching ratio is 2.23 times, the stretching temperature is 135° C., and the total stretching ratio is 29 times. Four heat setting temperature 145 ℃. The measured strength of the ultra-high molecular weight hig...

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Abstract

The present invention relates to preparation process and application of jelly fiber of polyethylene in ultrahigh molecular weight. The preparation process includes the following steps: pre-treatment of jelly fiber with hydrocarbon extractant; continuous extraction; pumping the solvent / extractant mixture with one conveying pump from the bath and the ultrasonic extracting tank to the fractioning recovery unit and recovering; returning the recovered extractant to the bath and the ultrasonic extracting tank; and filtering and depurating the solvent and returning the solvent to the dissolving step. The high strength and high modulus polyethylene fiber is used widely in pulletproof vest, rope, parachute, sports equipment and fishing line.

Description

technical field [0001] The invention belongs to the technical field of high-performance fibers, and in particular relates to a preparation method and application of ultrahigh molecular weight polyethylene (PE) jelly yarn. Background technique [0002] In the existing process of preparing high-performance fibers by ultra-high molecular weight polyethylene jelly spinning, the fiber forming process and the recovery of the solvent in the jelly filaments use the extraction method, that is, the non-volatile first One solvent is replaced, and then the volatile second auxiliary agent is eliminated in the subsequent drying heat treatment and stretching process. When the solvent generally uses high-boiling point mineral oil (white oil) or paraffin oil, kerosene, etc., the second auxiliary agent extraction agent uses low-boiling point substances, such as xylene, gasoline, chloroform, tetrachloroethylene, acetone, trichlorotrichlorohydrin, etc. Fluoroethane, etc. Its disadvantages inc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/04D01D5/00
Inventor 王依民顾白倪建华
Owner DONGHUA UNIV