Preparation method of super-hydrophobic paper

A technology for super-hydrophobic paper and pulp, which is applied in paper, papermaking, papermaking and other directions, can solve the problems of insufficient environmental protection, failure, and complicated preparation methods of super-hydrophobic paper, and achieves a solution that reduces free energy, is simple and convenient to operate, and has good waterproof and moisture-proof properties. Effect

Active Publication Date: 2020-08-18
LANZHOU JIAOTONG UNIV
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 waterproof and moisture-proof performance, durability and self-healing performance

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of super-hydrophobic paper
  • Preparation method of super-hydrophobic paper
  • Preparation method of super-hydrophobic paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of superhydrophobic paper:

[0032] Step 1, ultrasonically disperse 1 g of octadecylamine in 100 mL of deionized water, and ultrasonically emulsify for 8 hours to form octadecylamine emulsion.

[0033] In step 2, the octadecylamine emulsion and A4 paper pulp are uniformly mixed at a volume ratio of 1:1 to form a stearylamine-pulp mixture.

[0034] Step 3, mixing the octadecylamine-pulp mixed liquor with tannic acid at a mass ratio of 1:1, then adding chlorine hexahydrate to it at a mass ratio of 1:1 according to the mass ratio of tannic acid to aluminum chloride hexahydrate Aluminum.

[0035] Step 4, adjust the pH value of the mixed solution obtained in Step 3 to 8 with NaOH.

[0036] Step 5: stirring and reacting the mixed solution after adjusting the pH value for 24 hours to form a paper fiber slurry modified with tannic acid@octadecylamine (TA@ODA) microcapsules.

[0037] Step 6: Centrifuge the pulp modified by TA@ODA, flatten it into ...

Embodiment 2

[0039] A kind of preparation method of superhydrophobic paper:

[0040] Step 1, ultrasonically disperse 2 g of octadecylamine in 100 mL of deionized water, and ultrasonically emulsify for 10 h to form octadecylamine emulsion.

[0041] In step 2, the stearylamine emulsion and A4 paper pulp are uniformly mixed at a volume ratio of 1:5 to form a stearylamine-pulp mixture.

[0042] Step 3, mixing the octadecylamine-pulp mixed liquor with tannic acid at a mass ratio of 1:5, and then adding chlorine hexahydrate at a mass ratio of 1:3 according to tannic acid and aluminum chloride hexahydrate Aluminum.

[0043] Step 4, adjusting the pH value of the mixed solution in Step 3 to 9 with NaOH.

[0044] Step 5: stirring and reacting the mixed solution after adjusting the pH value for 12 hours to form a paper fiber slurry modified with tannic acid@octadecylamine microcapsules.

[0045] Step 6: Centrifuge the pulp modified by TA@ODA, flatten it into shape, and dry it at 60°C for 40 minute...

Embodiment 3

[0047] A kind of preparation method of superhydrophobic paper:

[0048] Step 1, ultrasonically disperse 2 g of octadecylamine in 100 mL of deionized water, and ultrasonically emulsify for 10 h to form octadecylamine emulsion.

[0049] In step 2, the octadecylamine emulsion and the filter paper pulp are uniformly mixed at a volume ratio of 1:5 to form a stearylamine-pulp mixture.

[0050] Step 3, mixing the octadecylamine-pulp mixed liquor with tannic acid at a mass ratio of 1:5, and then adding chlorine hexahydrate at a mass ratio of 1:3 according to tannic acid and aluminum chloride hexahydrate Aluminum.

[0051] Step 4, adjusting the pH value of the mixed solution to 8 with NaOH.

[0052] Step 5: stirring and reacting the mixed solution after adjusting the pH value for 24 hours to form a paper fiber slurry modified with tannic acid@octadecylamine microcapsules.

[0053] Step 6: centrifuge the pulp modified by TA@ODA, flatten it into shape, and dry it at 80°C for 60 minutes ...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of super-hydrophobic paper, wherein the preparation method comprises the following steps: step 1, carrying out ultrasonic emulsification on octadecylamineto obtain an octadecylamine emulsion; step 2, uniformly mixing the octadecylamine emulsion with paper pulp in proportion to form an octadecylamine-paper pulp mixed solution; step 3, adding tannic acidand aluminum chloride hexahydrate into the octadecylamine-paper pulp mixed solution, adjusting the pH value, and carrying out a stirring reaction to form tannic acid@octadecylamine microcapsule (TA@ODA) modified paper fiber pulp; and step 4, centrifuging, flattening and drying the paper fiber pulp to obtain the super-hydrophobic paper. Compared with a traditional method, the preparation method ofthe super-hydrophobic paper provided by the invention does not need complex instruments and equipment, does not need a complex synthesis process, does not need too long time, and has the advantages of simple operation, convenience, environmental protection and the like, and the prepared super-hydrophobic paper has good super-hydrophobic performance, good durability and self-repairing performance.

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 made of plant cellulose is one of the four great inventions of our country. It carries the civilization and history of mankind, and has played a huge role in promoting the development and spread of human culture. Paper is a natural polymer material with low production cost, mature preparation technology, and recyclability after use. Compared with glass and polymers, paper has the advantages of light weight, portability, biodegradability, and no environmental pollution. An indispensable material in daily production and life. However, paper has an obvious feature, that is, hydrophilicity, which is caused by some hydrophilic functional groups on the paper cellulose, such as hydroxyl, carboxyl, and sulfonic acid groups, which makes the paper easy to be soaked in water a...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/07D21H17/66D21H17/14D21H21/16D21H21/54D21F13/00
CPCD21H17/07D21H17/66D21H17/14D21H21/16D21H21/54D21F13/00
Inventor 刘艳花陈娟宁强小虎黄大建冯利邦
Owner LANZHOU JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap