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

Energy absorption method based on dynamic polymer

A polymer and dynamic technology, applied in the field of energy absorption, can solve the problems of easy failure of energy-absorbing materials and low energy-absorbing efficiency

Inactive Publication Date: 2020-07-07
翁秋梅
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a new energy-absorbing method is provided to solve the problems of low energy-absorbing efficiency and easy failure of energy-absorbing materials.

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
  • Energy absorption method based on dynamic polymer
  • Energy absorption method based on dynamic polymer
  • Energy absorption method based on dynamic polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0076] In the present invention, the dynamic polymer may have one, two or more than two glass transition temperatures, or may not have a glass transition temperature. Among them, in a preferred embodiment of the present invention, at least one of the glass transition temperatures of the dynamic polymer is higher than 100°C, more preferably all of them are higher than 100°C, which helps the dynamic polymer to exhibit good dimensional stability , mechanical strength, and high temperature resistance, which help the dynamic polymer to show good energy absorption and impact resistance under high temperature application conditions; another preferred embodiment of the present invention, the glass transition temperature of the dynamic polymer At least one of them is between 25°C and 100°C, more preferably all of them are between 25°C and 100°C, which facilitates the production of energy-absorbing polymer products in the form of ordinary solids, foams, elastomers, gels, etc. Because th...

Embodiment 1

[0255] Under ice-bath conditions, add an appropriate amount of triethylamine to a certain amount of polypropylene glycol (Mn is about 2000) and continue to stir, then drop a certain amount of chloroform solution of 9-anthracenecarbonyl chloride, stir and react, and obtain Anthracenyl-dicapped polypropylene glycol (a).

[0256] Take 100g of anthracenyl double-capped polypropylene glycol (a) and add it to the reactor, add 1.5g of silicon dioxide and 1g of montmorillonite, stir for 30min, and then place it under ultraviolet light with a wavelength of 365nm for 1-2h; After the end, it is processed to obtain a viscous dynamic polymer.

[0257] The obtained viscous dynamic polymer can be coated on the surface of the substrate and dried, and can be used as an impact-resistant energy-absorbing coating to protect the substrate against impact.

Embodiment 2

[0259]

[0260] Dissolve a certain amount of polyisoprene (a) (Mn is about 8300, 3,4-, 1,2- and 1,4-segments account for about 66.7%, 20.5% and 12.7%) in an appropriate amount In toluene, add an appropriate amount of AIBN and excess 9-mercaptomethylanthracene, vacuum degassing, place in an oil bath at 60°C to stir and react, and after the reaction is completed, undergo subsequent treatment to obtain polyisoprene with anthracene in the side group, wherein The side double bonds of the 1,2-segment were all reacted, and about 8% of the side double bonds of the 3,4-segment were reacted.

[0261] Take 50 parts by mass of polyisoprene with side groups containing anthracene groups dissolved in an appropriate amount of toluene, add 1.5 parts by mass of carbon fiber and 1 part by mass of graphene, stir for 30 minutes, and then place it under ultraviolet light with a wavelength of 365nm to irradiate the reaction for 1~ 2h. After the reaction, pour it into a suitable mold, place it in...

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

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Wavelengthaaaaaaaaaa
Wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an energy absorption method based on a dynamic polymer. The method is characterized in that the dynamic polymer is used as an energy absorption material to absorb energy; the dynamic polymer contains at least one [4 + 4] cycloaddition dynamic covalent bond and an optional supramolecular hydrogen bond. According to the dynamic polymer, the dynamic reversible characteristicsof the dynamic covalent bonds and the optional supramolecular hydrogen bond are fully utilized, so that good energy dissipation performance can be reflected, and the energy-absorbing polymer materialwith wide controllable range, rich structure and various properties can be prepared; therefore, good effects of damping, shock absorption, buffering, noise elimination, sound insulation, impact resistance and the like are provided, and the dynamic polymer is particularly applied to the aspects of body protection in sports, daily life and work, military police body protection, explosion prevention,airborne landing and airdrop protection, automobile collision prevention, impact resistance protection of electronic and electrical products and the like.

Description

technical field [0001] The invention relates to an energy absorbing method, in particular to an energy absorbing method based on a dynamic polymer composed of [4+4] cycloaddition dynamic covalent bonds and optional supramolecular hydrogen bonds. Background technique [0002] In the process of daily life and actual production, people, animals, objects, etc. are often affected by physical shocks such as impact, vibration, vibration, explosion, sound, etc., and usually need to use energy-absorbing materials to absorb energy to absorb and consume physical shocks. Dispersion and dispersion, so as to resist impact, damping, cushioning and shock absorption, sound insulation and noise reduction and other effects. At present, the most widely used energy-absorbing materials are polymer materials, which are generally through the movement and mutual friction of molecular chains under large deformation, the breakage of ordinary covalent bonds or molecular chains, the generation of cracks...

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): C08J3/24C08G83/00
CPCC08G83/008C08J3/24C08J3/246
Inventor 不公告发明人
Owner 翁秋梅
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