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Ultrahigh molecular weight polyethylene/carbon black nanometer composite fiber and its preparation method

A nano-composite fiber, ultra-high molecular weight technology, applied in the direction of single-component polyolefin rayon, fiber chemical characteristics, rayon manufacturing, etc., can solve the high price of carbon nanotubes, high cost of composite fibers, industrial production difficulties, etc. problem, to achieve the effect of low price, easy operation, improved heat resistance and creep resistance

Inactive Publication Date: 2012-05-02
JIANGSU LIUJIA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of carbon nanotubes, the cost of preparing composite fibers is relatively high, and the carbon nanotubes must be purified and organically treated, and the procedures are complicated, which has caused certain difficulties for industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 99.4 parts by weight of ultra-high molecular weight polyethylene powder (particle size 80 mesh, average molecular weight 4.5 × 10 6 g / mol), 0.5 parts of carbon black nanoparticles (its particle size is 100nm) and 0.1 part of 2,6-di-tert-butyl-p-cresol as an antioxidant, put into 900 parts of white oil (its viscosity is at 40 ℃ is 50Cst) solvent, through the emulsifier at 1000 rpm high-speed shear stirring for 1h, to obtain a uniform mixture; the mixture was heated to 110℃ at a heating rate of 2℃ / min, and kept for 1 hour to obtain The concentration is 10% homogeneous spinning solution; the spinning solution is fed into the twin-screw extruder. The diameter of the twin-screw extruder is 95mm, L / D=(68), the temperature is controlled at 240°C, and the rotation speed is 120 rpm. The extruded product is filtered and metered, sprayed out from the nozzle, extracted, dried and hot-drawn after being treated in a water bath. The stretching ratio is 60 times to obtain ultra-high m...

Embodiment 2

[0028] 98.7 parts by weight of ultra-high molecular weight polyethylene powder (particle size 90 mesh, average molecular weight 4 × 10 6 g / mol), 1 part of carbon black nanoparticles (its particle size is 300nm) and 0.3 part of N-phenyl-??-naphthylamine as an antioxidant, and 900 parts of decahydronaphthalene (its Viscosity is 70Cst at 40°C), stirred in an emulsifier at 2000 rpm for 1 hour to obtain a well-mixed mixture; the mixture was heated to 100°C at a heating rate of 3°C / min, and kept for 4 Hours, to obtain a concentration of 10% spinning solution. Using the same method as in Example 1, the spinning solution was used to prepare ultra-high molecular weight polyethylene / carbon black nanocomposite fibers.

Embodiment 3

[0030] 96 parts by weight of ultra-high molecular weight polyethylene powder (particle size 100 mesh, average molecular weight 3 × 10 6 g / mol), 3 parts of carbon black nanoparticles (its particle size is 500nm) and 1 part of N-phenyl-??-naphthylamine as an antioxidant, and 400 parts of paraffin oil as a solvent (its viscosity (80Cst at 40°C), stir in an emulsifier at 3000 rpm for 0.5h with high-speed shearing to obtain a well-mixed mixture; heat the mixture to 120°C at a heating rate of 5°C / min, and keep it warm for 2 Hours, to obtain a concentration of 20% spinning solution. Using the same method as in Example 1, the spinning solution was used to prepare ultra-high molecular weight polyethylene / carbon black nanocomposite fibers.

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Abstract

The invention provides an ultrahigh molecular weight polyethylene / carbon black nanometer composite fiber and its preparation method. The method comprises: putting ultrahigh molecular weight polyethylene, carbon black nanoparticles and an anti-oxidant into a solvent, conducting high speed shearing and stirring by an emulsifying machine so as to be uniformly mixed, thus obtaining a mixture; then raising the temperature of the mixture to 100-120DEG C, controlling the temperature raising speed at 2-5DEG C / min, and carrying out thermal insulation for 1-4h so as to obtain a spinning solution, then employing a conventional ultrahigh molecular weight polyethylene fiber production method for preparing an ultrahigh molecular weight polyethylene / carbon black nanometer composite fiber. The ultrahigh molecular weight polyethylene / carbon black nanometer composite fiber prepared in the invention effectively improves the hear resistance and creep resistance of ultrahigh molecular weight polyethylene fibers, reduces fiber production cost, and extends the application scope of fibers. Meanwhile, the preparation method provided in the invention has concise process route and is easy to operate.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene / carbon black nano composite fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene has low density, stable chemical properties such as UV resistance and corrosion resistance, and outstanding performance such as impact resistance and cutting resistance. It is currently one of the three high-performance fiber materials recognized internationally. High-quality bullet-proof clothing, stab-proof clothing, lightweight bullet-proof helmets, radar domes, bullet-proof armor for cash transport vehicles, bullet-proof armor for helicopters, cables for ships and ocean-going ships, lightweight high-pressure containers, aerospace structural parts, deep-sea anti-wind and wave cages, fishing nets, Ideal material for rowing boats, sailboats, sleds and more. However, due to the large molecular weight of ultra-high molecular weight polyethylene, as...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10
Inventor 郭子贤张腊梅张竹标王华平项朝阳王新鹏罗晓娟
Owner JIANGSU LIUJIA TECH CO LTD
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