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Energy absorption method and application thereof

A hydrogen bonding, dynamic technology used in the field of energy absorption

Inactive Publication Date: 2020-07-07
翁秋梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These structures for energy absorption are often a simple superposition of the above-mentioned mechanisms. Compared with the single above-mentioned mechanism, although the energy absorption range has been expanded to a certain extent and the energy absorption efficiency has been improved, its shortcomings cannot be avoided.

Method used

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  • Energy absorption method and application thereof
  • Energy absorption method and application thereof
  • Energy absorption method and application thereof

Examples

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preparation example Construction

[0250] The preparation method of a kind of dynamic polymer ionic liquid gel of the present invention comprises the following steps: adding the raw material for preparing the dynamic polymer into the ionic liquid so that the mass fraction of the prepared dynamic polymer is 0.3-75%. Said appropriate means carry out covalent cross-linking, and after the reaction is finished, a dynamic polymer ionic liquid gel is produced. Another preparation method of dynamic polymer ionic liquid gel of the present invention comprises the following steps: swelling the dynamic polymer in a solvent containing ionic liquid so that the mass fraction of the prepared dynamic polymer is 0.3-75%, After fully swelling, the solvent is removed to form a dynamic polymer ionic liquid gel. The ionic liquid is generally composed of organic cations and inorganic anions. As an example, the cations are selected from the group including but not limited to alkyl quaternary ammonium ions, alkyl quaternary azolium ion...

Embodiment 1

[0258] Add 15 molar equivalents of 1,6-hexanedithiol into a dry and clean flask, then add an appropriate amount of THF solvent, stir to dissolve, add an appropriate amount of dibenzoyl peroxide, and an appropriate amount of catalyst sodium iodide, stir well After mixing, reflux reaction at 70° C. for 2 hours, after purification and drying, the dynamic polymer with linear structure was obtained. The material can be used as an interlayer adhesive for lamination between woods, and it can absorb external impact energy while also having certain self-healing properties.

Embodiment 2

[0260] Take a dry and clean reaction bottle, add 10 molar equivalents of 1,2,7,8-dioxoctane, 2.5 molar equivalents of N,N-di(2-hydroxyethyl)-N′-propyl- Urine, 7 molar equivalents of 2,2'-dithiodiethanol, and then add an appropriate amount of dichloromethane to stir and dissolve, and use potassium hydroxide as a catalyst to heat and react to obtain an epoxy-terminated prepolymer. The material can be used as an adhesive for electronic packaging, can absorb and disperse external impact energy, and has certain self-healing properties.

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Abstract

The invention discloses an energy absorption method which is characterized in that a dynamic polymer is provided as an energy absorption material for energy absorption, and the dynamic polymer contains a dynamic covalent bond and an optional supramolecular hydrogen-bond interaction; wherein the dynamic covalent bond is at least one of dynamic disulfide bonds. According to the dynamic polymer, characteristics of the dynamic covalent bond are fully utilized; on one hand, the polymer is endowed with certain strength and stability; on the other hand, the dynamic covalent bonds under certain conditions have strong dynamic reversibility; therefore, the dynamic polymer has the characteristics of energy dissipation, dispersion and energy absorption; when the material is used as an energy absorbingmaterial, the material can provide good damping, shock absorption, sound insulation, noise elimination, impact resistance and other functions, and is especially applied to body protection of sports and daily life and work, military police body protection, explosion prevention, bulletproof, airborne landing and airdrop protection, automobile collision prevention, impact resistance protection of electronic and electrical products and other aspects.

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 dynamic covalent crosslinking and optional supramolecular hydrogen bonding. Background technique [0002] In daily life, sports, entertainment, military, police, security, medical care, production and other activities, human bodies, animal bodies and objects are often severely affected by physical shocks such as impacts, vibrations, shocks, explosions, and sounds. By using energy-absorbing materials for energy absorption, this type of physical impact can be effectively protected and alleviated. These energy absorption methods are divided into active energy absorption and passive energy absorption. Active energy absorption includes methods such as the use of shock absorbers, and passive energy absorption includes methods such as the use of materials with energy-absorbing functions. The materials used for energy absorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24
CPCC08J3/243
Inventor 不公告发明人
Owner 翁秋梅
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