Ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by electrostatic spinning method as well as preparation method and application of ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane

A nanofiber membrane, electrospinning technology, applied in electrospinning, separation methods, fiber processing and other directions, can solve the problems of secondary pollution of indoor air, furniture surface marks, furniture surface damage, etc., to effectively capture, The effect of increasing compatibility and improving catalytic efficiency

Active Publication Date: 2022-06-24
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, spraying ethylene urea solution on furniture and other surfaces is likely to leave marks on the surface of the furniture, and even damage the surface of the furniture in severe cases
And during the spraying process, the small droplets of ethylene urea are scattered in the air, which is easy to cause secondary pollution of indoor air

Method used

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  • Ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by electrostatic spinning method as well as preparation method and application of ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane
  • Ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by electrostatic spinning method as well as preparation method and application of ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane
  • Ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by electrostatic spinning method as well as preparation method and application of ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing an ethylene urea / polyacrylonitrile formaldehyde-removing nanofiber membrane by an electrospinning method of the present embodiment includes the following steps:

[0024] The polyacrylonitrile raw material was put into an oven, dried at 50°C for 8 hours, 16 grams of dried polyacrylonitrile and 4 grams of ethylene urea were added to 80 grams of N-N dimethylformamide solution, and the solution was heated at 60 ℃. Stir at ℃ for 10 h to obtain an electrospinning solution;

[0025] The obtained electrospinning solution was transferred to a syringe for electrospinning to obtain a nanofiber membrane; then the obtained nanofiber membrane was transferred to a blast thermostat, and dried at 60° C. for 6 hours to remove the solvent. The electrospinning conditions were as follows: the electrospinning positive voltage was 20kV, the flow rate was 0.08ml / h, the electrospinning receiving distance was 10cm, the indoor ambient humidity was 25%, and aluminum foil was...

Embodiment 2

[0030] A method for preparing an ethylene urea / polyacrylonitrile formaldehyde-removing nanofiber membrane by an electrospinning method of the present embodiment includes the following steps:

[0031] Put the polyacrylonitrile raw material in an oven, dry it at 70°C for 6 hours, take 14 grams of dried polyacrylonitrile and 8 grams of ethylene urea and add it to 80 grams of N-N dimethylformamide solution, and at 50 Stir at ℃ for 6 h to obtain an electrospinning solution;

[0032] The obtained electrospinning solution was transferred to a syringe for electrospinning to obtain a nanofiber membrane; then the obtained nanofiber membrane was transferred to a blast thermostat, and dried at 40° C. for 12 hours to remove the solvent. The electrospinning conditions were as follows: the electrospinning positive voltage was 12kV, the flow rate was 0.1ml / h, the electrospinning receiving distance was 20cm, the indoor ambient humidity was 40%, and aluminum foil was used as the receiving subst...

Embodiment 3

[0034] A method for preparing an ethylene urea / polyacrylonitrile formaldehyde-removing nanofiber membrane by an electrospinning method of the present embodiment includes the following steps:

[0035] Put the polyacrylonitrile raw material into an oven, dry it at 60 °C for 7 hours, take 10 grams of dried polyacrylonitrile and 10 grams of ethylene urea and add it into 80 grams of N-N dimethylformamide solution, at 55 °C Stir for 8h under the condition to obtain the electrospinning solution;

[0036] The obtained electrospinning solution was transferred to a syringe for electrospinning to obtain a nanofiber membrane; then the obtained nanofiber membrane was transferred to a blast thermostat, and dried at 50° C. for 8 hours to remove the solvent. The electrospinning conditions were as follows: the electrospinning positive voltage was 16kV, the flow rate was 0.09ml / h, the electrospinning receiving distance was 16cm, the indoor ambient humidity was 30%, and aluminum foil was used as...

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Abstract

The invention belongs to the field of nanofiber membranes, and relates to an ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by an electrostatic spinning method as well as a preparation method and application of the ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane. The preparation method comprises the following steps: (1) adding dried polyacrylonitrile and ethylene urea into N-N dimethylformamide, and stirring to obtain an electrostatic spinning solution; and (2) performing electrostatic spinning on the electrostatic spinning solution in the step (1) to obtain a nanofiber membrane, and then drying the nanofiber membrane to remove the solvent to obtain the ethylene urea/polyacrylonitrile formaldehyde-removing nanofiber membrane. An electrostatic spinning method and a chemical formaldehyde purification method are combined, and the nanofiber with the efficient formaldehyde purification function is prepared by utilizing the advantages that polymer superfine fibers are convenient to form and can adsorb formaldehyde gas, increase the concentration of the formaldehyde gas around ethylene urea and improve the catalytic efficiency due to the relatively high specific surface area.

Description

technical field [0001] The invention belongs to the field of nanofiber membranes, and relates to an ethylene urea / polyacrylonitrile formaldehyde-removing nanofiber membrane prepared by an electrostatic spinning method and a method and application thereof. Background technique [0002] Formaldehyde is recognized as a harmful gas in the world. It is carcinogenic and can cause bronchial diseases, such as asthma. After inhaling formaldehyde, it will cause dizziness, nausea, vomiting, chest tightness and other symptoms. In severe cases, it will also lead to Memory decline. For different types of formaldehyde pollution, the treatment methods include activated carbon physical adsorption, photocatalytic oxidation, plasma decomposition, chemical reaction and biodegradation and other formaldehyde removal technologies. However, among the above-mentioned methods for removing formaldehyde, the chemical reaction removing formaldehyde technology has a wide range of applications, has the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/43D01D5/00D01F1/10D01F6/54B01J20/26B01D53/86B01D53/72B01J20/30
CPCD04H1/728D04H1/43D01D5/003D01F1/10D01F6/54B01J20/261B01D53/04B01D53/8668Y02A50/20
Inventor 裴海燕普玉霞鲁佳丽程豪韩梦阳李双秦雅洁潘玮陈燕张卓锐
Owner ZHONGYUAN ENGINEERING COLLEGE
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