Method for preparing nano particle modified chemical fibre

A nanoparticle and chemical fiber technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of cumbersome and high cost of composite materials, achieve improved tensile properties, low production cost, and simple preparation methods Effect

Inactive Publication Date: 2004-02-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The in-situ polymerization and compounding method can uniformly disperse nanoparticles in the polymer matrix, but this method is cumbersome, the cost of the obtained composite material is high, and the spinning performance of the obtained nanocomposite polymer needs to be further studied

Method used

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  • Method for preparing nano particle modified chemical fibre

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Experimental program
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Effect test

Embodiment 1

[0028] Add the surface-treated nano-silica and xylene into a container with an ultrasonic generator at a ratio of 1:100 and stir at a high speed for 20 minutes to make an extract with evenly dispersed nanoparticles. Put the polyethylene jelly fiber in In it, the extraction was carried out twice for a total of 20 minutes in a static state, and then dried at room temperature. The dry jelly fiber is stretched 12 times at 100°C, 2 times at 110°C, and 1.4 times at 120°C. The strength of the obtained fiber is 30.5cN / dtex, the modulus is 1720cN / dtex, and the elongation at break is 3.31%. However, the polyethylene jelly fiber is extracted under the same conditions in an extraction bath not containing nanoparticles and then dried and stretched under the same conditions. The fiber strength obtained is 29.6cN / dtex, and the modulus is 1170cN / dtex. The elongation was 3.83%. The scanning electron micrograph of the cross-section of the fiber after one-stage stretching is as follows: figu...

Embodiment 2

[0030] Add 2 parts each of surface-treated nano-tourmaline particles and nano-titanium dioxide particles to 98 parts of an aqueous solution containing 3% sodium thiocyanate, and stir at high speed under ultrasonic conditions for 20 minutes to prepare a preheating bath for uniform dispersion of nanoparticles.

[0031] The polyacrylonitrile primary fiber coming out of the coagulation bath enters the above-mentioned preheating bath, the bath temperature is 55°C, stretched 1.5 times under the ultrasonic state, the fiber stays in the preheating bath for 1min, and then carries out secondary stretching and water washing and other post-treatment processes to make acrylic fibers containing nanoparticles. The average number of negative oxygen ions released by the tested final product is 150 / cm 3 , the far-infrared emission rate is 83%, its antibacterial rate to Escherichia coli is 81%, and the antibacterial rate to Staphylococcus aureus is 77%.

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Abstract

The method of preparing nano particle modified chemical fiber features that nano particles after surface treatment in certain proportion is added into and dispersed in solidifying bath, preheating bath or extracting bath for wet spinning or wet-dry spinning via high speed stirring to form bathing liquid with homogeneously dispersed nano particles. After eliminating solvent and drawing, nano particles are diffused into fiber pores, and the nano particle modified chemical fiber possesses raised drawing performance. The said method is simple, low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of chemical fiber, in particular to a preparation method of chemical fiber modified by nano particles. Background technique [0002] Nanoparticles have a large specific surface area, and the number of surface atoms, surface energy and surface tension increase sharply with the decrease of particle size. Properties, magnetic properties, optical properties and electrical properties are different from conventional particles. Adding nanoparticles into chemical fibers will endow these functions into the fibers and make nanoparticle-modified chemical fibers. Nanoparticles with different properties can be used to develop various functional fibers such as antibacterial, flame retardant, anti-ultraviolet, far-infrared, negative oxygen ion health care, antistatic and electromagnetic shielding, or improve the heat resistance or mechanical properties of fibers. [0003] The easiest way to prepare nanomaterial-modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D06M11/83
Inventor 于俊荣刘兆峰胡祖明潘婉莲栾秀娜诸静陈蕾
Owner DONGHUA UNIV
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