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Method for preparing conductive ultrahigh molecular weight polyethylene fiber

A polyethylene fiber, ultra-high molecular weight technology, applied in the polymer field, can solve the problems of inert fiber surface, difficult to coat or adsorb conductive substances, difficult to adsorb other substances, etc., to achieve simple preparation of instruments and simplified pretreatment process. , good activation effect

Active Publication Date: 2011-12-14
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, there are no polar groups in the molecular chain, which makes the surface of the fiber extremely inert and difficult to adsorb other substances
Therefore, the fibers cannot be treated with roughening, activation and sensitization methods for chemical plating, and it is also difficult to coat or adsorb conductive substances on the surface.

Method used

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  • Method for preparing conductive ultrahigh molecular weight polyethylene fiber
  • Method for preparing conductive ultrahigh molecular weight polyethylene fiber
  • Method for preparing conductive ultrahigh molecular weight polyethylene fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Step (1) Soak the ultra-high molecular weight polyethylene fiber in an acetone solution, ultrasonically wash it for 1 hour, rinse it with deionized water, and dry it naturally at room temperature;

[0056] Step (2) configuring an activation solution: dissolving 3,4-dihydroxyphenylalanine in a Tris-hydrochloric acid buffer solution with a pH of 7.5 to prepare an activation solution with a concentration of 0.01mol / L;

[0057] Step (3) placing the washed ultra-high molecular weight polyethylene fiber in a reaction vessel, adding an excessive amount of activation solution, and activating it under stirring, and the activation time is 24 hours;

[0058] Step (4) configuration electroless silver plating solution, concrete steps are:

[0059] ① Configure silver solution: Add silver nitrate to deionized water at a ratio of 0.1mol per liter of deionized water, and add concentrated ammonia water with a mass concentration of 26% dropwise while stirring until the precipitate is comp...

Embodiment 2

[0065] Step (1) Soak the ultra-high molecular weight polyethylene fiber in an ethanol solution, ultrasonically wash it for 2 hours, rinse it with deionized water, and dry it naturally at room temperature;

[0066] Step (2) configuring an activation solution: dissolving 3,4-dihydroxyphenethylamine in a Tris-hydrochloric acid buffer solution with a pH of 7, and configuring an activation solution with a concentration of 0.02mol / L;

[0067] Step (3) placing the washed ultra-high molecular weight polyethylene fibers in a reaction vessel, adding an excessive amount of activation solution, and activating under stirring, the activation time is 1.5 hours;

[0068] Step (4) configuration electroless silver plating solution, concrete steps are:

[0069] ① Prepare silver solution: In deionized water, add silver nitrate at a ratio of 0.2mol per liter of deionized water, and silver chloride at a ratio of 0.2mol, and add concentrated ammonia water with a mass concentration of 28% dropwise wh...

Embodiment 3

[0075] Step (1) soak the ultra-high molecular weight polyethylene fiber in a tetrahydrofuran solution, ultrasonically wash it for 5 hours, rinse it with deionized water, and dry it in vacuum at 50°C;

[0076] Step (2) configuring an activation solution: dissolving tyrosine in a Tris-hydrochloric acid buffer solution with a pH of 8.5 to configure an activation solution with a concentration of 0.005mol / L;

[0077] Step (3) placing the washed ultra-high molecular weight polyethylene fiber in a reaction vessel, adding an excessive amount of activation solution, and activating it under stirring, and the activation time is 12 hours;

[0078] Step (4) configuration electroless silver plating solution, concrete steps are:

[0079] ① Configure silver solution: Add silver perchlorate to deionized water at a ratio of 0.12mol per liter of deionized water, and add concentrated ammonia water with a mass concentration of 25% dropwise while stirring until the precipitate is completely dissolv...

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Abstract

The invention relates to a method for preparing a conductive ultrahigh molecular weight polyethylene fiber. The conventional method is complicated in process and causes environmental pollution. The method comprises the following steps of: firstly, immersing the ultrahigh molecular weight polyethylene fiber into acetone, ethanol or a tetrahydrofuran solution, performing ultrasonic washing on the fiber and airing; secondly, dissolving a dopamine substance into a buffer solution to prepare an activation solution, placing the ultrahigh molecular weight polyethylene fiber into the activation solution and activating the ultrahigh molecular weight polyethylene fiber under stirring; and finally, immersing the activated ultrahigh molecular weight polyethylene fiber in a plating solution at temperature of 10 to 60 DEG C for 0.5 to 10 hours so as to finish silver plating. By the method, the surface of the ultrahigh molecular weight polyethylene fiber is activated by using dopamine polymer and metallized by using chemical plating, so that the ultrahigh molecular weight polyethylene fiber with extremely high conductivity can be obtained; and the whole process is environment-friendly and pollution-free.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a method for preparing conductive fibers, in particular to a method for preparing conductive ultra-high molecular weight polyethylene fibers by using dopamine-like substances to activate the surface of fibers to realize chemical silver plating, aiming to obtain a conductive ultra-high molecular weight polyethylene fiber. Conductive, antistatic and superior performance fibers. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fibers are made from UHMWPE powder with a weight-average molecular weight of more than one million through gel spinning and ultra-thermal stretching. The molecular chains in UHMWPE fibers are arranged in parallel along the fiber axis, and the degree of orientation is very high; the main chain is a simple -CH2-plane zigzag structure without side groups, and the symmetry, regularity and flexibility are very good, so the fiber ...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M13/342D06M13/368D06M101/20
Inventor 胡伟炜乌学东曾志祥顾群
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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