Production method and application of super-hydrophobic surface polypropylene nonwoven fabric

A technology of polypropylene non-woven fabric and super-hydrophobic surface, which can be used in separation methods, chemical instruments and methods, textiles and papermaking, etc., and can solve the problems of large consumption of organic solvents, high requirements for surface grafting equipment, and complex processes. Achieve the effects of low equipment requirements, short modification time and simple preparation process

Active Publication Date: 2015-12-09
AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have many shortcomings
For example, the template method needs to prepare the template first, and the plasma etching and surface grafting have high requirements for equipment. The method consumes a large amount of organic solvents and causes harm to the environment (benzene is often used as a PP solvent, and benzene solvents have carcinogenic effects)
At present, superhydrophobic modified polypropylene is mainly used for surface self-cleaning and reducing fluid resistance, but there are few reports on the application in the field of environmental protection and in the field of media separation.

Method used

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  • Production method and application of super-hydrophobic surface polypropylene nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 5mL of deionized water and 10mL of n-heptane into a 250mL beaker, heat it on an electric stove until the deionized water boils after sealing, and put 0.048g of 30# polypropylene non-woven fabric (30g / m 2 ) was immersed in the boiling solution for 30 s, and was taken out to dry to obtain a superhydrophobic polypropylene nonwoven fabric with a contact angle of 164°.

Embodiment 2

[0033] Add 9mL of deionized water and 9mL of n-heptane into a 250mL beaker, heat it on an electric stove until the deionized water boils after sealing, and put 0.064g of 40# polypropylene non-woven fabric (40g / m 2 ) was immersed in the boiling solution for 40 s, and was taken out to dry to obtain a superhydrophobic polypropylene nonwoven fabric with a contact angle of 160°.

Embodiment 3

[0035] Add 60mL of deionized water and 15mL of n-heptane into a 250mL beaker, heat it on an electric stove until the deionized water boils after sealing, and put 0.216g of 60# polypropylene non-woven fabric (60g / m 2 ) was immersed in the boiling solution for 60 seconds, and was taken out to dry to obtain a superhydrophobic polypropylene nonwoven fabric with a contact angle of 159°.

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Abstract

The invention discloses a production method and an application of a super-hydrophobic surface polypropylene nonwoven fabric. The method comprises the following steps: arranging a polypropylene nonwoven fabric in a boiling water/n-heptane solution system, immersing, taking out, and drying to obtain the super-hydrophobic surface polypropylene nonwoven fabric. The method has the advantages of simple operation, low cost, environmental protection, and industrial production requirement meeting; and the super-hydrophobic surface polypropylene nonwoven fabric produced in the invention has the advantages of good hydrophobicity and good permeability maintenance, and can be applied to the fields of separation of water and water-insoluble organic solvents, and water mist removal of flue gas.

Description

technical field [0001] The invention relates to a method for preparing a superhydrophobic polypropylene surface by a dissolution-recrystallization method and its application in the fields of separation of water and non-water-soluble organic solvents and removal of smoke and mist, and belongs to the modification of polypropylene non-woven fabrics technology field. Background technique [0002] Superhydrophobic materials based on polymers are an important new type of organic functional materials, which have a wide range of applications in bionic and medical fields. Polypropylene (PP) is a widely used and low-cost material, and its superhydrophobic modification has important research and application value. [0003] At present, the methods for superhydrophobic modification of polypropylene mainly include template method (Lin Xunliang, Pang Yichuan, Feng Jie, micro-molding technology to prepare polypropylene superhydrophobic surface, Guangzhou Chemical Industry, 2013, 41 (12): 1...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/02B01D17/022B01D39/08B01D46/52D06M101/20
Inventor 何曦刘维芳
Owner AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD
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