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A kind of preparation method of colored ultra-high molecular weight polyethylene fiber

A relative molecular weight, polyethylene fiber technology, applied in the direction of single-component polyolefin rayon, dyeing, textiles and papermaking, etc., can solve the problems of affecting mechanical properties, affecting fiber stretching, difficult to clean equipment, etc., to achieve Simple manufacturing process, easy industrial production and low production cost

Active Publication Date: 2016-06-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the following disadvantages in adding dye particles to the spinning stock solution. The one is that the addition of dye particles may increase the viscosity of the spinning stock solution and affect its spinnability; Uneven particle dispersion leads to weak points in the fiber, which affects the subsequent stretching of the fiber, thereby affecting its mechanical properties; third, because the spinning is carried out at a higher temperature (250-300 ° C), the choice of dye particles is limited; It is difficult to clean the equipment due to the addition of pigment particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of black UHMWPE fiber

[0027] Use disazo solvent black (molecular formula: C 29 h 24 N 6 ) is a dye additive, which is mixed with ethanol at a mass ratio of 1:1000, and ultrasonically oscillated for 20 minutes to dissolve the dye evenly to obtain a black dye solution. The UHMWPE dry jelly fiber after extraction and removal of the solvent was placed in the dye solution, ultrasonicated for 20 minutes, dried at room temperature, and then subjected to three-stage thermal stretching at 80-110°C, with a total stretching ratio of 42 times, to obtain black UHMWPE fiber. The strength of the obtained black UHMWPE fiber is 32.5cN / dtex.

Embodiment 2

[0029] Preparation of red UHMWPE fiber

[0030] Iron oxide red with a particle size of less than 1um was selected as a pigment additive, mixed with iron oxide red and xylene at a mass ratio of 1:500, and ultrasonically oscillated for 30 minutes to uniformly disperse the pigment particles to obtain a red dye solution. After extraction and drying, the UHMWPE dry jelly fiber with a solvent content of 1.5% is placed in the dyeing solution, ultrasonicated for 40 minutes, taken out, dried at room temperature, and then subjected to three-stage thermal stretching at 80-110°C. The total stretching ratio is 35 times, the strength of the red UHMWPE fiber is 28.5cN / dtex.

Embodiment 3

[0032] Preparation of blue UHMWPE fiber

[0033] Anthraquinone solvent blue (molecular formula: C 22 h 18 N 2 o 2 ) is a dye, which is mixed with ethanol at a mass ratio of 1:800, and ultrasonically oscillated for 20 minutes to dissolve the dye evenly to obtain a black dye solution. The UHMWPE dry jelly fiber after extraction and removal of the solvent is placed in the dyeing solution, ultrasonicated for 30 minutes, dried at room temperature, and then subjected to three-stage thermal stretching at 80-110°C. The total stretching ratio is 42 times, and the green UHMWPE fiber is obtained. The strength is 30.8cN / dtex.

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Abstract

The invention relates to a method for preparing colored ultra-high molecular weight polyethylene fibers, which includes: (1) mixing and stirring dye or pigment powder with a solvent, and assisting ultrasonic vibration to obtain a uniform dyeing bath; (2) mixing UHMWPE The jelly fiber is extracted, dried, and wound to obtain UHMWPE dry jelly fiber; (3) Put the above-mentioned UHMWPE dry jelly fiber in the dyeing bath solution obtained in step (1) and ultrasonically vibrate for 10-50 minutes, take it out and dry it to obtain a colored UHMWPE dry jelly fiber; (4) The above-mentioned colored UHMWPE dry jelly fiber is subjected to multi-stage thermal stretching and winding to obtain colored UHMWPE fiber. The invention has the advantages of simple process, low production cost, easy realization of industrialized production, wide choice of dyes or pigment particles, will not affect the original excellent mechanical properties of UHMWPE fibers, and is suitable for civil, military, national defense and other fields with color requirements.

Description

technical field [0001] The invention belongs to the field of preparation of colored fibers, in particular to a method for preparing colored ultra-high molecular weight polyethylene (UHMWPE) fibers. Background technique [0002] UHMWPE fiber is the third generation of high-performance special fiber after carbon fiber and aramid fiber. Because of its high molecular weight, good main chain combination, high degree of orientation and crystallinity, and the highest strength of all new chemical fiber materials today, it is used in the military industry. It plays an irreplaceable role in the field of aviation and aerospace. In addition to playing an extremely important role in military, national defense and other fields, UHMWPE fibers have also been widely used in civilian fields. With the expansion of the application of UHMWPE fiber in marine engineering and fishery fields, the demand for colored UHMWPE fiber is increasing. [0003] Patent CN103074786A discloses a method for dye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/04D06P3/79D06P1/00D06P1/44D06P5/20D06P5/02
Inventor 于俊荣胡祖明诸静王彦陈蕾李燕
Owner DONGHUA UNIV