Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Rapid self-repairing materials and application thereof

A self-healing material and self-healing technology, applied in the field of self-healing materials, can solve problems such as poor processability, difficulty in recycling and recycling, and ecological environment pressure.

Active Publication Date: 2019-09-27
NANJING UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the imine bond has been widely used by researchers to construct new self-healing polymer materials due to its excellent stability and excellent dynamic exchange capacity, but the existing self-healing materials based on imine bonds have the following points Insufficient (2014, Adv. Mater., 26, 3938.; 2016, Macromolecules, 49, 6277; 2017, Macromol. Rapid Commun., 38, 1700110; 2018, Macromol. Rapid Commun., 39, e1700686.): (1 ) Self-healing materials based on imine bonds often need external stimuli (heating, ultraviolet light, acid-base adjustment) to assist in repairing, and materials prepared without external stimuli at room temperature often take hours or even dozens of hours to repair. It is possible to realize self-healing of its performance, and there is no related material that can achieve spontaneous and rapid self-healing (1-30 minutes) at room temperature; (2) it will gradually decompose under acidic conditions, thereby degrading the performance of the material itself; (3) it can The processing ability is poor, and high temperature and high pressure are often required to assist processing and forming; (4) It is difficult to recycle and recycle, which puts pressure on the ecological environment of sustainable development

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
  • Rapid self-repairing materials and application thereof
  • Rapid self-repairing materials and application thereof
  • Rapid self-repairing materials and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Synthesis of a novel fast self-healing material (1), the structure is as follows:

[0060]

[0061] Specific steps:

[0062] In a dry four-neck flask equipped with a thermometer, a condenser, a dropping funnel, and a nitrogen inlet, add 1000 g of anhydrous toluene, start stirring, and mix 3,3',5,5'-tetraaldehyde-4,4' -Dihydroxybiphenyl solid powder in batches (Z 1 = Z 4 =-OH,Z 2 = Z 3 = Z 5 = Z 6 =-H, 0.30g, 1.00mmol) was added in anhydrous toluene, and then slightly excess 50g of amodimethicone (p 1 =q 1 =3,G 1 =G 2 =G 3 =G 4 =G 5 =G 6 =-CH 3 ,n 1 =300-350, 2.25mmol) into the mixed reaction system. Then add 60g of 4A molecular sieve into the reaction solution to act as a water absorbing agent. Finally, 30 mg of p-toluenesulfonic acid monohydrate catalyst (10 g of toluene solution) was added dropwise into the reaction system. After the dropwise addition, the temperature was raised and controlled to 120° C., the condensed water was turned on, and the...

Embodiment 2

[0068] Synthesis of a novel fast self-healing material (2), the structure is as follows:

[0069]

[0070] Specific steps:

[0071] In a dry four-necked flask equipped with a thermometer, a condenser, a dropping funnel, and a nitrogen inlet, add 1000g of anhydrous toluene, start stirring, and mix 5-chloro-2-hydroxyisophthalaldehyde solid powder in batches (Y 1 =-OH,Y 2 =Y 3 =-H,Y 4 =-Cl, 1.84g, 10.00mmol) was added in anhydrous toluene, and then slightly excess 150g of amodimethicone (p 1 =q 1 =3,G 1 =G 2 =G 3 =G 4 =G 5 =G 6 =-CH 3 ,n 1 =200-220, 12.00mmol) into the mixed reaction system. Then add 60g of 4A molecular sieve into the reaction solution to act as a water absorbing agent. Finally, 30 mg of p-toluenesulfonic acid monohydrate catalyst (10 g of toluene solution) was added dropwise into the reaction system. After the dropwise addition, the temperature was raised and controlled at 120°C, the condensed water was turned on, and the reflux was continued f...

Embodiment 3

[0076] Synthesis of a novel fast self-healing material (3), the structure is as follows:

[0077]

[0078] Specific steps:

[0079] In a dry four-necked flask equipped with a thermometer, a condenser, a dropping funnel, and a nitrogen feed inlet, add 500g of anhydrous toluene, start stirring, and 5-chloro-2-hydroxy isophthalaldehyde solid powder in batches ((Y 1 =-OH,Y 2 =Y 3 =-H,Y 4 =-Cl, 1.84g, 10.00mmol) was added in anhydrous toluene, and then slightly excess 40g of amino-terminated polyethylene glycol (p 2 =q 2 =1,n 2 =100-120, 12.50mmol) into the mixed reaction system. Then add 20g of 4A molecular sieve into the reaction solution to act as a water absorbing agent. Finally, 10 mg of p-toluenesulfonic acid monohydrate catalyst (10 g of toluene solution) was added dropwise into the reaction system. After the dropwise addition, the temperature was raised and controlled to 120° C., the condensed water was turned on, and the reflux reaction was continued for 32 hour...

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 present invention provides rapid self-repairing materials in view of the problems existing in the field of polymer engineering. A fast exchanged imine bond is combined with an amino-terminated polymer having a good chain fluidity, and the proportions of the imine bond and the amino-terminated polymer material are controlled, so the prepared rapid self-repairing materials have an excellent self-repairing property; and after the materials are continuously damaged by the outside, the materials can recover excellent tensile property, sealing performance and bonding performance at room temperature in just 1-30 min, and can be recycled.

Description

technical field [0001] The invention belongs to the technical field of self-repairing materials, and in particular relates to a novel fast self-repairing material and its application. Background technique [0002] Self-healing material is a new type of intelligent material that integrates perception, drive and information processing, and can self-repair when the material is damaged by simulating the self-repair mechanism of biological damage. Self-healing materials provide an economical and fast new method for repairing micro-cracks in the substrate and repairing surface damage. It provides an ideal way to prolong the service life of materials, improve material safety, reduce waste and optimize economic benefits. It has important applications in the fields of aerospace, military industry, construction and engineering. At present, this material with self-"detection", self-analysis and self-repair functions plays an irreplaceable role in modern industry. [0003] The traditi...

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
IPC IPC(8): C08G77/38
CPCC08G77/38
Inventor 李承辉左景林王大鹏赖建诚赵梓含
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com