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Chelating function fiber and synthesis method

A technology of functional fibers and synthesis methods, applied in fiber processing, textiles and papermaking, etc., can solve the problems of low adsorption kinetic performance, unstable fiber performance, difficult mass production, etc., and achieve good purification and removal effect and good mechanical strength. , the effect of stable performance

Inactive Publication Date: 2004-03-03
NO 718 INST NO 7 RES INST CHINA SHIPPING HEAVY IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are unstable fiber properties, low adsorption kinetics, poor mechanical properties, and the reagents used are highly toxic, flammable and explosive, and difficult to carry out large-scale production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Put 80g of industrial grade ethanol and 10g of sodium hydroxide solid into the reaction bottle, heat it with an electronic thermostat heating mantle until the sodium hydroxide is completely dissolved, then put in 5g of acrylic fiber, and keep the temperature at 80℃~85℃ Reaction 24h;

[0023] 2) Take out the reaction fiber, wash it with distilled water, wring it out, put it into a 5% copper sulfate solution and shake it for 7 minutes;

[0024] 3) Take out the fiber, put it into 2% polyethyleneimine aqueous solution, and shake it at room temperature for 5 minutes;

[0025] 4) Take out the fiber and put it into 6% glutaraldehyde solution, shake for 12 hours;

[0026] 5) Treat with 2N sulfuric acid and 0.1N ammonia water successively, then wash with distilled water until neutral, and dry to obtain an adsorption capacity of 2.32mmolH + / g (dry fiber) of chelating functional fiber.

Embodiment 2

[0028] 1) Put 100mL of industrial grade methanol and 20g of solid sodium hydroxide into the reaction bottle, heat it with an electronic temperature-adjusting heating mantle until the sodium hydroxide is completely dissolved, then put in 3g of acrylic fiber, and keep the temperature at 60℃~65℃ Reaction 30h;

[0029] 2) Take out the reaction fiber, wash it with distilled water, wring it dry, then put it into 15% zinc sulfate solution and shake it for 60min;

[0030] 3) Take out the fiber, put it into 6% polyethyleneimine methanol solution, and shake it at room temperature for 30 minutes;

[0031] 4) Take out the fibers and put them in 10% glutaraldehyde aqueous solution, shake for 12 hours;

[0032] 5) Take out the fibers and treat them successively with 5N sulfuric acid and 0.1N ammonia water, then wash with distilled water until neutral, and dry to obtain an adsorption capacity of 2.09mmolH + / g (dry fiber) of chelating functional fiber.

Embodiment 3

[0034] 1) Put 150mL of methanol and 20g of solid potassium hydroxide into the reaction bottle, heat it with an electronic thermostat heating mantle until the potassium hydroxide is completely dissolved, then put 7g of acrylic fiber, and react at a constant temperature within the range of 60°C to 65°C for 30h;

[0035] 2) Take out the reaction fiber, wash it with distilled water, wring it dry, and then put it into a 7% lead nitrate solution and shake it for 60 minutes;

[0036] 3) Take out the fiber, put it into 10% polyethyleneimine ethanol solution, and shake it at room temperature for 50 minutes;

[0037] 4) Take out the fiber and put it into 5% succinic dialdehyde aqueous solution, shake for 16 hours;

[0038] 5) Take out the fibers and treat them successively with 3N sulfuric acid and 0.1N ammonia water, then wash with distilled water until neutral, and dry to obtain an adsorption capacity of 2.98mmolH + / g (dry fiber) of chelating functional fiber.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

A fibre with chelating function for cleaning industrial sewage and removing the acidic gas (HCl, SO2 and H2S) is prepared from acrylic fibres through hydrolysis, chemically coating the polyvinylimine on the surface of acrylic fibre, and chemical cross-linking. Its advantages are high stability, adsorption capacity, selectivity and mechanical strength, no poison, and easy eluting.

Description

technical field [0001] The invention relates to ion exchange fiber manufacturing technology, in particular to a chelating functional fiber with acrylic fiber as a carrier and a synthesis method. Background technique [0002] Ion exchange fiber is an ion exchange material with ion exchange groups on the polymer chain of the fiber. It includes ordinary anion and cation exchange fibers and chelating ion exchange fibers (referred to as chelating fibers). Ordinary anion and cation exchange fibers can exchange cations or anions. The chelating fiber has functional groups containing different coordination atoms on the fiber skeleton, which can form chelates with cations, so it has a high selectivity for ion adsorption and is an excellent adsorption material. [0003] In the prior art, there are mainly two types of synthesis methods for ion exchange fibers. One is to copolymerize or blend monomers or polymers that have or can be converted into ion-exchange groups with monomers or ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M14/10D06M15/21
Inventor 陈兆文张琴
Owner NO 718 INST NO 7 RES INST CHINA SHIPPING HEAVY IND GRP
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