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Polymeric fiber and preparation method thereof

A polymer and fiber technology, applied in the field of composite ultra-high molecular weight polyethylene fiber and its preparation, can solve the problems of poor dispersion of inorganic fillers and high viscoelasticity, and achieve good spinnability, long-term stability, and good toughness Effect

Inactive Publication Date: 2019-02-19
JIANGSU HANVO SAFETY PROD CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at one or more of the existing problems in the prior art, the present invention provides an inorganic ultra-fine filler filled with UHMWPE to modify it. At the same time, the present invention can solve the problem of the high viscoelasticity of ultra-high molecular weight polyethylene. The problem of poor dispersion

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  • Polymeric fiber and preparation method thereof
  • Polymeric fiber and preparation method thereof

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preparation example Construction

[0075] In one embodiment of the present invention, refer to figure 1 , figure 2 , Provides a method for preparing polymer fibers, using the components and contents of the above-mentioned polymer fibers, including:

[0076] Filler premix: Mix the inorganic ultrafine filler with solvent A and stir with an emulsifier to obtain a filler premix;

[0077] Pre-mixing of nano microchips: mix nano microchips with solvent B and dispersant, stir, enter the homogenizer, and discharge to form a slurry;

[0078] Preparation of the spinning mixture: swelling the filler premix, and mixing the slurry of the nanochips with solvent C, UHMWPE powder and antioxidant to obtain a spinning mixture;

[0079] Preparation of polymer fibers: swelling, melt-extrusion, and cooling the spinning mixture to obtain jelly threads, and polymer fibers are prepared from the jelly threads.

[0080] The solvent A, solvent B, and solvent C are all one or a combination of two or more of n-heptane, cyclohexane, paraffin oil, v...

Embodiment 1

[0110] 1) Preparation of fiber premix

[0111] Pour 2kg of basalt fiber into 98kg of paraffin oil to premix, and stir for 15min at 1000rpm with an emulsifier.

[0112] 2) Preparation of graphene slurry

[0113] Add 0.1kg of graphene and 0.02kg of dispersant AFCONA4700 to 99.88kg of paraffin oil (the graphene slurry concentration is 0.1%). After stirring for 10 minutes at a high-speed shearing machine at 500 rpm, enter the ultra-high pressure micro-jet homogenizer (pressure Set to 3000bar), grind twice to the particle size required by graphene (D99≤5um), and discharge.

[0114] 3) Preparation of spinning solution

[0115] Pour the solutions of steps 1) and 2) into a swelling kettle containing 1101.2 kg of paraffin oil under high-speed stirring, and then add 97.78 kg of UHMWPE powder and 0.1 kg of antioxidant 1010 (graphene accounts for 0.1% of the composite fiber, basalt The fiber accounts for 2% of the composite fiber, and the antioxidant accounts for 0.1% of the composite fiber), whi...

Embodiment 2

[0119] 1) Preparation of fiber premix

[0120] Pour 6kg of silica particles into 114kg of white oil for premixing, and stir for 10min with an emulsifier at 2000rpm.

[0121] 2) Preparation of graphene slurry

[0122] Add 0.5kg of graphene powder and 0.5kg of dispersant PSS to 49kg of white oil (the graphene slurry concentration is 1%). After stirring for 7 minutes at a high-speed shearing machine at 2000 rpm, enter the ultra-high pressure micro-jet homogenizer ( The pressure is set to 3200bar), cyclically grind twice to the particle size required by graphene (D99≤5um), and discharge.

[0123] 3) Preparation of spinning solution

[0124] Pour the solutions of steps 1) and 2) into a swelling kettle containing 1072.44kg of white oil under high-speed stirring, and then add 92.99kg UHMWPE powder and 0.01kg antioxidant DNP (graphene accounts for 0.5% of the composite fiber, The silica particles account for 6% of the composite fiber, and the antioxidant accounts for 0.01% of the composite fi...

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Abstract

The invention provides a polymeric fiber and a preparation method thereof. The polymeric fiber comprises, by weight, 2-10% of an inorganic superfine filling material and 0.1-3% of nano microsheets; the inorganic superfine filling material comprises superfine micropowder and / or superfine fiber. The preparation method of the polymeric fiber, as a composite fiber, prepared herein is simple and highlyoperable; the prepared composite fiber has high strength, good toughness and good spinnability, can fully meet the demands of textile processes, and is applicable to the field of cutting-resistant gloves.

Description

Technical field [0001] The invention belongs to the technical field of high-performance fiber preparation, and specifically relates to a composite ultra-high molecular weight polyethylene fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is the third generation of high-performance fiber after carbon fiber and aramid fiber. It has mechanical properties unmatched by other high-performance fibers. In addition, it also has excellent chemical resistance and weather resistance. It is widely used in military bulletproof, safety protection, aerospace, etc. with various excellent properties such as resistance, high energy absorption, impact resistance, low temperature resistance, abrasion resistance, bending resistance, cutting resistance, electrical insulation and certain water resistance. Marine engineering and high-performance, lightweight composite materials and other fields. However, the UHMWPE molecule itse...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10
CPCD01F1/10D01F6/46
Inventor 欧崇华任申东张明王咸华
Owner JIANGSU HANVO SAFETY PROD CO LTD
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