A method for preparing flame-retardant cellulose fibers by grafting and modifying metal ions

A technology of metal ion grafting and cellulose fiber, which is applied in fiber processing, plant fiber, textile and paper making, etc., can solve the problems such as large amount of flame retardant, waste of raw materials, different flame retardant mechanism, etc., and achieve low manufacturing cost. , the process is simple, easy to control the effect

Active Publication Date: 2017-01-11
青岛大学股权投资管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The flame retardants used in the above-mentioned regenerated cellulose fiber and its fabric flame-retardant modification are basically compounds containing elements such as phosphorus, nitrogen, and halogen. Due to the use of phosphorus-based flame retardants, they are also There is an environmental pollution problem; the flame retardant mechanism of the two is different, resulting in too much flame retardant added, too much flame retardant attached to the surface of the fiber, and ultimately affects the flame retardant effect of the product, and wastes raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The mass ratio of cellulose fiber and maleic anhydride is selected as 1:3; the mass ratio of maleic anhydride and N-N dimethylformamide is selected as 5:6, the grafting reaction time is 3 hours, and the reaction temperature is 90 ℃;

[0030] A kind of metal ion graft modification prepares the method for fire-resistant cellulose fiber, comprises the following steps:

[0031] Step 1. Add 16.2g of cellulose fibers dried at 50°C for 2-3 hours into the mixed solution of maleic anhydride and N-N dimethylformamide with a set mass ratio, and heat at 90°C for 3 hours to obtain successful grafting The modified cellulose fiber of maleic acid, the measured degree of grafting is 0.08;

[0032] Step 2. Wash the modified cellulose fiber three times with deionized water to remove unreacted maleic anhydride. After drying at 50°C, wash once with acetone to remove difficult-to-clean maleic anhydride, and dry at 50°C to obtain pure grafted cellulose fibers. to the cellulose fibers of anh...

Embodiment 2

[0035] The mass ratio of cellulose fiber to maleic anhydride is selected as 1:3; the mass ratio of maleic anhydride to N-N dimethylformamide is 5:6, the grafting reaction time is 3 hours, and the reaction temperature is 100°C;

[0036] A kind of metal ion graft modification prepares the method for fire-resistant cellulose fiber, comprises the following steps:

[0037] Step 1. Add 16.2g of cellulose fibers dried at 50°C for 2-3 hours into the mixed solution of maleic anhydride and N-N dimethylformamide with a set mass ratio, and heat at 100°C for 3 hours to obtain successful grafting The modified cellulose fiber of maleic acid, the measured degree of grafting is 0.1;

[0038] Step 2. Wash the modified cellulose fiber three times with deionized water to remove unreacted maleic anhydride. After drying at 50°C, wash once with acetone to remove difficult-to-clean maleic anhydride, and dry at 50°C to obtain pure grafted cellulose fibers. to the cellulose fibers of anhydride;

[00...

Embodiment 3

[0041] The mass ratio of cellulose fiber to maleic anhydride is 1:3;

[0042] The mass ratio of maleic anhydride to N-N dimethylformamide is 5:6, the grafting reaction time is 3 hours, and the reaction temperature is 110°C;

[0043] A kind of metal ion graft modification prepares the method for fire-resistant cellulose fiber, comprises the following steps:

[0044] Step 1. Add 16.2g of cellulose fibers dried at 50°C for 2-3 hours into the mixed solution of maleic anhydride and N-N dimethylformamide with a set mass ratio, and heat at 110°C for 4 hours to obtain successful grafting The modified cellulose fiber of maleic acid, the measured degree of grafting is 0.1;

[0045] Step 2. Wash the modified cellulose fiber three times with deionized water to remove unreacted maleic anhydride. After drying at 50°C, wash once with acetone to remove difficult-to-clean maleic anhydride, and dry at 50°C to obtain pure grafted cellulose fibers. to the cellulose fibers of anhydride;

[0046...

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Abstract

The invention discloses a preparation method of flame-retardant cellulose fiber through metal ion grafting modification, and belongs to the technical field of flame-retardant textile products. The preparation method comprises the following steps: at first, grafting maleic anhydride to the cellulose fiber macromolecular chain, then modifying the grafted cellulose fiber by metal ion compounds, wherein the introduced carboxyl group can carry out grafting modification with a plurality of metal ions, and finally preparing the flame-retardant cellulose fiber through a common treatment method. The prepared flame-retardant cellulose fiber has an inherent flame-retardant property, an ideal flame-retardant effect can be achieved by using only a little amount of added flame retardant namely the metal ions for grafting, because the flame-retardant cellulose fiber has an inherent flame-retardant property, the conventional flame retardants such as phosphorus flame retardant, nitrogen flame retardant, halogen flame retardant, and the like are not needed, the cellulose fiber will not give off toxic gas during the application process, and the environment pollution generated during the production process and application process of cellulose fiber and the pollution caused by the waste cellulose fiber are reduced.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant textiles, and in particular relates to a method for preparing flame-retardant cellulose fibers by grafting and modifying metal ions (alkali metals, alkaline earth metals, and transition metals). Background technique [0002] Fire safety is becoming more and more important in modern life, and combustible polymer materials widely used in modern life have become one of the main ignition materials for fires, especially building fires in urban fires. The danger of these materials in fire has been paid more and more attention by people. In recent years, fires caused by textiles have been increasing in the world. The results of the investigation of fatal accidents caused by fire show that fires caused by interior decorations and textiles are the first. sexual textiles. Therefore, in order to prevent fires, the production of flame-retardant fibers has received more and more attention. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/203D06M101/06
Inventor 夏延致纪全宗鲁马晓梅云维采
Owner 青岛大学股权投资管理有限公司
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