Novel ion exchange fiber and its application

An ion exchange fiber, a new technology, applied in ion exchange, anion exchange, fiber type, etc., can solve the problems of performance not meeting the use requirements, little application value, poor solvent resistance, etc., achieve good mechanical properties and short regeneration time , the effect of high adsorption value

Inactive Publication Date: 2013-01-16
冯淑芹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ion exchange fibers before the 1930s were actually ion exchange fibers based on natural fibers [1] , the switching capacity is small, and the performance often does not meet the requirements of use, and the practical application value is not great
However, PS fiber has poor strength and poor solvent resistance.

Method used

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  • Novel ion exchange fiber and its application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Matrix fiber preparation:

[0034] The raw materials PS, PE and compatibilizer are mixed according to a certain weight ratio and fed into the feeding port of the spinning machine, and the spinning is carried out at a temperature of 180-230°C. The fiber is drawn through godet rollers and godet rollers, and wound onto a winder for winding. The parts by weight of the compatibilizer are 1; the total parts by weight of PS and PE are 99; the weight ratio of PS and PE is 90:10;

[0035] The PS has a molecular weight of 100,000 and a melt index of 12g / 10min;

[0036] The PE has a molecular weight of 120,000 and a melt index of 15g / 10min;

[0037] The compatibilizer is SIS;

[0038] Unwind the fiber from the winder for post-stretching. The process conditions for stretching are 90°C temperature and 0.5 times the draw ratio.

[0039] Preparation of ion exchange fibers:

[0040] The base fiber is washed with ethanol or acetone to remove oil stains, and after vacuum drying, the...

Embodiment 2

[0045] Matrix fiber preparation:

[0046] The raw materials PS, PE and compatibilizer are mixed according to a certain weight ratio and fed into the feeding port of the spinning machine, and the spinning is carried out at a temperature of 180-230°C. The fiber is drawn through godet rollers and godet rollers, and wound onto a winder for winding. The weight part of compatibilizer is 0.5; the total weight part of PS and PE is 99.5; the weight ratio of PS and PE is 60:40

[0047] The PS has a molecular weight of 200,000 and a melt index of 8g / 10min;

[0048] The PE has a molecular weight of 80,000 and a melt index of 18g / 10min;

[0049] The compatibilizer is SBS;

[0050] Unwind the fiber from the winder for post-stretching. The process conditions for stretching are 110° C. temperature and 3 times the stretching ratio.

[0051] Preparation of ion exchange fibers:

[0052] The base fiber is washed with ethanol or acetone to remove oil stains, and after vacuum drying, the base ...

Embodiment 3

[0057] Matrix fiber preparation:

[0058] The raw materials PS, PE and compatibilizer are mixed according to a certain weight ratio and fed into the feeding port of the spinning machine, and the spinning is carried out at a temperature of 180-230°C. The fiber is drawn through godet rollers and godet rollers, and wound onto a winder for winding. The parts by weight of compatibilizer are 5; the total parts by weight of PS and PE are 95; the weight ratio of PS and PE is 80:20

[0059] The PS has a molecular weight of 50,000 and a melt index of 24g / 10min;

[0060] The PE has a molecular weight of 100,000 and a melt index of 16g / 10min;

[0061] The compatibilizer is SEEPS;

[0062] The fiber is withdrawn from the winding machine for post-stretching. The process conditions for stretching are 100° C. temperature and 2 times the stretching ratio.

[0063] Preparation of ion exchange fibers:

[0064] Cleaning the base fiber with ethanol or acetone to remove oil stains, vacuum dryi...

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Abstract

The invention discloses a novel ion exchange fiber and its application. The ion exchange fiber is directly prepared by directly selecting raw materials having ion exchange functions without obtaining functional groups through a chemical treatment of grafting. The preparation method of the ion exchange fiber is simple, is in favor of the industrialized continuous production of products, and has a low economic cost. The ion exchange fiber prepared in the invention has the advantages of large exchange capacity, fast elution and adsorption speed, and the like. The filament diameter and the exchange capacity of the ion exchange fiber prepared in the invention are 5-100mum and 3.0-5.8mmol / g respectively. The matrix fiber of the ion exchange fiber has good comprehensive performances comprising good mechanical performances, high temperature resistance, acid and alkali resistance and the like. The preparation method of the novel ion exchange fiber comprises the following steps: mixing the raw materials comprising polystyrene (PS) and polyethylene (PE) with a compatilizer according to a certain weight ratio, adjusting an optimum spinning temperature, and carrying out melt spinning to prepare the base material of the ion exchange fiber; and carrying out chemical treatment of the base material to prepare the cation exchange fiber having sulfonic groups. The novel ion exchange fiber can be widely applied to the environmental protection field, the medicine and health field, the metallurgical filed, the water treatment field, the chemical adsorption field, the resource recovery field and the like.

Description

technical field [0001] The invention relates to a novel ion-exchange fiber and its application, in particular to a method for directly preparing a novel ion-exchange fiber by a melt-spinning method, and belongs to the technical field of chemical fiber material manufacturing methods. Background technique [0002] Ion exchange fiber (IEF) is a new generation of functional adsorption separation material after granular ion exchange resin. The diameter of ion exchange fibers is mostly <100μm, even <10μm, which has obvious kinetic advantages. It has a series of advantages such as fast exchange speed, large effective specific surface area, small fluid resistance, easy regeneration and convenient use. It can be applied in various forms, such as fibers, yarns, fabrics, non-woven fabrics, etc., so it is suitable for ion exchange processes in various ways. It has been widely used in the fields of preparation of electronic pure water, medical water, biological agents, industrial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01J41/12D02J1/22D06M11/55D06M13/188D06M15/39D06M13/224D06M13/08D06M11/52D06M13/165D06M13/328D06M13/332D06M101/20B01J41/14
Inventor 冯淑芹
Owner 冯淑芹
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