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Method for compounding functional nanoparticles on surfaces of polymer filaments

A technology of functional nanoparticles and surface compounding, which is applied in the field of new fiber materials, can solve problems affecting product performance, large-scale application limitations, and difficulty in dispersing, and achieve excellent mechanical properties, compatibility, and good compatibility.

Active Publication Date: 2014-02-05
JIANGSU YIMAO FILTER MEDIA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wet blend spinning is mainly aimed at polyvinyl alcohol-based products, but due to the environmental protection, degradation and moisture stability of polyvinyl alcohol itself, its large-scale application is greatly restricted
Melt blend spinning is mainly aimed at polyester, nylon, polypropylene or ethylene-based products. Due to the simple process of melt blend spinning and small footprint, the functional filaments prepared by this method have been sold in the market, but the method used to prepare Functional filaments also encountered the following problems: 1. The dispersibility of functional nanoparticles. Due to their nano-size effect, functional nanoparticles are not easy to disperse in the process of melt blending and spinning, which not only affects the performance of the product, but also Increased the loss of processing equipment; 2. The coating problem of functional nanoparticles. In the process of melt blending and spinning, functional nanoparticles are easily covered by polymer matrix, resulting in the failure of blended filaments to reflect the function of functional nanoparticles. properties, such as: antibacterial, electrical conductivity, etc.; 3. The filling amount of functional nanoparticles is low, and the lower filling amount cannot maximize the functional performance of functional filaments, while the higher filling amount will inevitably affect the performance of polymer filaments. The mechanical properties make it useless
These problems lead to the inability of the functional filaments prepared by the melt blending spinning method to further improve their functionality, and new technologies and methods are needed to improve the functionality of the functional filaments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] Preparation of B blend solution

[0037] According to the following mass percentage:

[0038] Surface proteinized functional nanoparticles 1-16%

[0039] Thermoplastic Polyurethane 1-12%

[0040] Dimethylformamide 72-98%

[0041] Put the surface proteinized functional nanoparticles prepared by step A into dimethylformamide, and after ultrasonic dispersion for 1-3h, add thermoplastic polyurethane with a number average molecular weight of 20000-180000 and a melting point of 160-190°C, Under the condition that the temperature is 25-35°C, mechanical stirring is used to dissolve the thermoplastic polyurethane. After dissolving for 3-5 hours, a blended solution is obtained through static vacuum degassing. The viscosity of the blended solution is 500-2000mPa·s. The vacuum defoaming temperature is 25-35°C;

[0042] Formation and Thickness Control of Composite Blend Solution on the Surface of C Polymer Filaments

[0043] Warm up the blended solution prepared in step B to 35...

Embodiment 1

[0050] A Protein modification of the surface of functional nanoparticles

[0051] Adopt ultrasonic wave to be that the carbon nanotube 5g that average particle diameter is 20nm is dispersed in the keratin aqueous solution 100g that mass fraction is 0.5%, the number-average molecular weight of keratin is 1000, and dispersion temperature is 50 ℃, after dispersing 1h, will disperse solution The temperature was lowered to 1 ° C, and after standing still for 24 hours, centrifuged and dried to obtain surface proteinized carbon nanotubes, the centrifugal speed of the centrifuge was 5000 rpm, and the drying temperature was 80 ° C;

[0052] B put 1 g of surface proteinized carbon nanotubes prepared in step A into 98 g of dimethylformamide, and after ultrasonic dispersion for 1 h, add 1 g of thermoplastic polyurethane with a number average molecular weight of 20,000 and a melting point of 160° C. Under the condition of 25°C, the thermoplastic polyurethane was dissolved by mechanical sti...

Embodiment 2

[0057] A Protein modification of the surface of functional nanoparticles

[0058] Adopt ultrasonic wave to be that the graphene 6g that average particle diameter is 50nm is dispersed in the silk fibroin aqueous solution 100g that mass fraction is 0.8%, the number-average molecular weight of silk fibroin is 2000, and dispersion temperature is 55 DEG C, disperse 2h after the temperature of dispersion solution Be reduced to 2 DEG C, after standing still for 36h, obtain surface proteinized graphene through centrifuge centrifugation and drying, the centrifugal speed of centrifuge is 5000 rev / min, and drying temperature is 80 DEG C;

[0059] B puts the surface proteinized graphene 2g prepared by step A into 97g dimethylformamide, after adopting ultrasonic dispersion for 2h, adding number-average molecular weight is 300000, melting point is 170 DEG C of thermoplastic polyurethane 1g, at a temperature of Under the condition of 30°C, the thermoplastic polyurethane was dissolved by mech...

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Abstract

The invention relates to a method for compounding functional nanoparticles on surfaces of polymer filaments, belonging to the technical field of new fiber materials. The method comprises the steps of protein-based modification on surfaces of functional nanoparticles, preparation of a blended solution, formation of polymer filaments with surfaces compounded with the blended solution and control of thickness, phase inversion primary formation of the polymer filaments with surfaces compounded with the blended solution and thermosetting formation of the polymer filaments with surfaces compounded with the blended solution, thus obtaining the polymer filaments with surfaces compounded with the functional nanoparticles. In the preparation method, carbon nano tubes, graphene, carbon black, titanium dioxide, zinc dioxide, iron particles, iron oxide, aluminium oxide, silver particles and other nanoparticles can be compounded on the surfaces of the polymer filaments. The polymer filaments after compounding have good mechanical properties and functionality. The preparation method is simple to operate, dispenses with special equipment and achieves industrial production easily.

Description

technical field [0001] The invention relates to a method for compounding functional nanoparticles on the surface of polymer filaments, belonging to the technical field of new fiber materials. Background technique [0002] Functional filament is a new type of material with high added value, outstanding functionality and wide application. However, the preparation technology of functional filaments is relatively complicated, the equipment requirements are high, the process is complicated, and a high level of technical personnel is required. my country lags behind developed countries in the field of functional filaments, which is not only reflected in engineering technology and equipment, but also in the innovation of functional filament preparation methods, resulting in some high-tech cutting-edge technology fields being controlled by foreign countries. Therefore, the development of new preparation methods and technical means of functional filaments has important strategic sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M11/46D06M11/44D06M11/49D06M11/45D06M11/83D06M15/564D06M23/00D06M101/32D06M101/34D06M101/24D06M101/28D06M101/06D06M101/20
Inventor 刘欣吴勇敏郭蕾程远佳陈凤翔徐卫林
Owner JIANGSU YIMAO FILTER MEDIA CO LTD
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