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Method for preparing super-hydrophobic paper through laser printing

A super-hydrophobic paper, a certain amount of technology, applied in papermaking, paper, paper coatings, etc., can solve the problems of failure, insufficient environmental protection, complicated preparation methods of super-hydrophobic paper, etc., and achieves the reduction of free energy, good moisture resistance, and self-healing. Effect

Active Publication Date: 2021-03-19
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the problem that the existing superhydrophobic paper preparation method is relatively complex and not environmentally friendly, and its superhydrophobic performance is easily damaged by mechanical force, chemical action, ultraviolet light, high temperature, etc. The method of paper, the superhydrophobic paper prepared by this method also has good moisture resistance and UV resistance

Method used

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  • Method for preparing super-hydrophobic paper through laser printing
  • Method for preparing super-hydrophobic paper through laser printing
  • Method for preparing super-hydrophobic paper through laser printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, a kind of preparation method 1 of superhydrophobic paper

[0036] (1) Preparation of oleic acid-modified Fe3O4 nanoparticles: the chemical co-precipitation method was used to prepare oleic acid-modified Fe 3 o 4 nanoparticles. 9.100g of FeCl 3 ·6H 2 O and 3.645g FeCl 2 4H 2 O was ultrasonically dissolved in 50 mL of water, and then 220 μL of hydrazine hydrate was added to it, and after it was dispersed evenly, 23 mL of NH 3 ·H 2 O, sonicate for 10min; heat the reaction system to 70°C, and pass N 2 , mechanically stirred for 1.5h to fully react. After the reaction, it was poured into a large beaker, washed several times with deionized water until pH=7. Afterwards, the obtained precipitate was dispersed in a mixture of deionized water and ethanol with a volume ratio of 1:1, and then added into a three-necked flask, and oleic acid was added into the flask and stirred at 80° C. for 4 h. After the reaction, the system was cooled to room temperature, t...

Embodiment 2

[0042] Embodiment 2, a kind of preparation method 2 of superhydrophobic paper

[0043] (1) Preparation of oleic acid modified ferric oxide (OA-Fe 3 o 4 ) nanoparticles: oleic acid-modified Fe was prepared by chemical co-precipitation 3 o 4 nanoparticles. 9.100g of FeCl 3 ·6H 2 O and 3.645g FeCl 2 4H 2 O was ultrasonically dissolved in 50 mL of water, and then 250 μL of hydrazine hydrate was added to it, and after it was dispersed evenly, 25 mL of NH 3 ·H 2 O, ultrasonic 10min. The reaction system was heated to 70°C, and N 2 , mechanically stirred for 1.5h to fully react. After the reaction, it was poured into a large beaker, washed several times with deionized water until pH=7. Afterwards, the obtained precipitate was dispersed in a mixture of deionized water and ethanol with a volume ratio of 1:1, and then added into a three-necked flask, and oleic acid was added into the flask and stirred at 80° C. for 3.5 h. After the reaction, the system was cooled to room tem...

Embodiment 3

[0049] Embodiment 3, a kind of preparation method 3 of superhydrophobic paper

[0050] (1) Preparation of oleic acid modified ferric oxide (OA-Fe 3 o 4 ) nanoparticles: oleic acid-modified Fe was prepared by chemical co-precipitation 3 o 4 nanoparticles. 9.100g of FeCl 3 ·6H 2 O and 3.645g FeCl 2 4H 2 O was ultrasonically dissolved in 50 mL of water, and then 200 μL of hydrazine hydrate was added to it, and after it was dispersed evenly, 20 mL of NH 3 ·H 2 O, ultrasonic 8min. The reaction system was heated to 70°C, and N 2 , mechanically stirred for 1.5h to fully react. After the reaction, it was poured into a large beaker, washed several times with deionized water until pH=7. Afterwards, the obtained precipitate was dispersed in a mixture of deionized water and ethanol with a volume ratio of 1:1, and then added to a three-necked flask, 2 mL of oleic acid was added to the flask and stirred at 80° C. for 3 h. After the reaction, the system was cooled to room temper...

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Abstract

The invention discloses a method for preparing super-hydrophobic paper, which realizes the super-hydrophobic property of the surface of the paper, and the static contact angle of the prepared super-hydrophobic surface can reach 153.0 degrees. The prepared super-hydrophobic paper has good moisture resistance and ultraviolet resistance, after hydrophobicity is lost under the action of external force, octadecylamine packaged by polydopamine can be melted, released and migrated to the surface of a polydopamine capsule under the action of temperature, the free energy of the surface is reduced, andself-repairing of the super-hydrophobic performance of the surface of the paper is achieved. According to the preparation method disclosed by the invention, complex instruments and equipment are not needed, a complex synthesis process is not needed, complex steps are not needed, too long time is not needed, the laser printing technology has the advantages of being rapid, efficient and the like, and the preparation method of the super-hydrophobic paper has the characteristics of being simple and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials, and in particular relates to a preparation method of superhydrophobic paper. Background technique [0002] Paper-based materials are widely used in many fields of modern society because of their low cost, convenient handling and strong practicability. In addition, due to its flexibility, good deformability, light weight and good biodegradability, it has attracted widespread attention as a flexible "green electronic" material, and it is ideal in the fields of environmental monitoring, food and drug testing, and clinical medicine. commercialization prospects. There are also some electronic devices prepared with paper-based materials, such as actuators, triboelectric nanogenerators, and microfluidic components, etc., illustrating the wide applicability of paper-based materials. In addition, paper has good printing properties, so paper-based products can be mass-produced by print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/38D21H19/46D21H19/64D21H21/16D21H21/54D21H21/28D21H25/06D21H23/22C01G49/08B82Y30/00
CPCD21H19/385D21H19/46D21H19/64D21H21/16D21H21/54D21H21/285D21H25/06D21H23/22C01G49/08B82Y30/00Y02W30/64
Inventor 刘艳花陈娟宁刘兴飞穆宵宵吴刊选强小虎冯利邦
Owner LANZHOU JIAOTONG UNIV
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