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A kind of method of photocatalytic maleic anhydride grafted linen

A technology of maleic anhydride and linen, which is used in fiber processing, textiles and papermaking, etc., to achieve high production efficiency, high grafting rate, and low environmental pollution.

Active Publication Date: 2021-11-09
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Linen itself does not conduct electricity

Method used

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  • A kind of method of photocatalytic maleic anhydride grafted linen

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specific Embodiment approach 1

[0034] A method for photocatalyzed maleic anhydride grafted linen, is characterized in that: comprises the steps:

[0035] Step 1. Put the linen cloth in 16% sodium hydroxide aqueous solution for 30 seconds, swell it, take it out immediately, wash it with distilled water until neutral, put it in a vacuum drying oven, and dry it at 60°C for 90 minutes. Take out spare;

[0036] Step 2, prepare maleic anhydride (MAH) N,N-dimethylformamide solution (DMF), wherein, the mass concentration of maleic anhydride (MAH) is 40%, add photoinitiator 2,4,6-tri Tolyl-diphenylphosphine oxide (TPO), the quality of TPO is 2% of the MAH quality taken by weighing; the linen cloth is placed in the prepared DMF solution of MAH and soaked for 15min, then put into the ultraviolet light instrument , the power is 280w, the wavelength is 395nm, and the front and back sides of the linen are irradiated for 4 minutes;

[0037] Step 3: After the irradiation is completed, take out the linen cloth, wash it wi...

specific Embodiment approach 2

[0038] A method for photocatalyzed maleic anhydride grafted linen, is characterized in that: comprises the steps:

[0039] Step 1. Put the linen cloth in 16% sodium hydroxide aqueous solution for 30 seconds, swell it, take it out immediately, wash it with distilled water until neutral, put it in a vacuum drying oven, and dry it at 60°C for 90 minutes. Take out spare;

[0040] Step 2, prepare maleic anhydride (MAH) N,N-dimethylformamide solution (DMF), wherein, the mass concentration of maleic anhydride (MAH) is 50%, add photoinitiator 2,4,6-tri Tolyl-diphenylphosphine oxide (TPO), the quality of TPO is 2% of the MAH quality taken by weighing; the linen cloth is placed in the prepared DMF solution of MAH and soaked for 15min, then put into the ultraviolet light instrument Among them, the power is 80% of the maximum power (the maximum power is 280w, the wavelength is 395nm), and the front and back sides of the linen are irradiated for 2 minutes;

[0041] Step 3: After the irra...

specific Embodiment approach 3

[0042] A method for photocatalyzed maleic anhydride grafted linen, is characterized in that: comprises the steps:

[0043] Step 1. Put the linen cloth in 16% sodium hydroxide aqueous solution for 30 seconds, swell it, take it out immediately, wash it with distilled water until neutral, put it in a vacuum drying oven, and dry it at 60°C for 90 minutes. Take out spare;

[0044] Step 2, prepare maleic anhydride (MAH) N,N-dimethylformamide solution (DMF), wherein, the mass concentration of maleic anhydride (MAH) is 10%, add photoinitiator 2,4,6-tri Tolyl-diphenylphosphine oxide (TPO), the quality of TPO is 2% of the MAH quality taken by weighing; the linen cloth is placed in the prepared DMF solution of MAH and soaked for 15min, then put into the ultraviolet light instrument Among them, the power is selected as 40% of the maximum power (the maximum power is 280w, the wavelength is 395nm), and the front and back sides of the linen are irradiated for 3 minutes;

[0045] Step 3: Af...

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Abstract

A method for photocatalyzing maleic anhydride grafted linen, which relates to the field of composite material preparation, the specific scheme is as follows: a method for photocatalyzing maleic anhydride grafted linen, comprising the following steps: Take it out in 16% sodium hydroxide aqueous solution for 30 seconds, wash it with distilled water until neutral, put it in a vacuum drying oven and dry it; step 2, soak the dried linen in a maleic anhydride solution containing a photocatalyst for 15 minutes Take it out, and then irradiate each side of the linen cloth with ultraviolet light for 2-4 minutes; step 3, after the irradiation is completed, take out the linen cloth, wash it with distilled water to neutrality, put it into a vacuum drying oven and dry it to obtain the linen cloth grafted with maleic anhydride. The ultraviolet photocatalytic photografting method grafts maleic anhydride on the surface of linen cloth, which overcomes the shortcomings of traditional melting method and solution method such as high energy consumption, complicated process, and large pollution. The process is simple and the grafting rate is high.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a method for photocatalyzing maleic anhydride grafted linen. Background technique [0002] At present, the methods of grafting maleic anhydride include thermal grafting, photografting, radiation grafting and other methods according to the different ways of free radical initiation [1]; according to the state of natural fibers, there are solution method, melting method and solid phase method. Law. [0003] solution grafting [1] It is troublesome to recycle, the production cost is high, and the organic solvent used will cause harm to human body and damage to the environment. The same grafted fibers need to be re-drawn and woven into linen. [0004] melt grafting [2] The method has the characteristics of simple operation, low cost, and is suitable for industrial production. However, the reaction temperature is high when the method is adopted, which seriously degrades...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M14/22
CPCD06M14/22
Inventor 孙才英苟巧林李燕任彪彪李宏章杨娅迭恺
Owner NORTHEAST FORESTRY UNIVERSITY
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