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Energy absorption method based on force-induced responsive supramolecular polymer

A technology of supramolecular polymers and supramolecules, applied in the field of energy absorption, can solve problems such as accidents, failure of energy-absorbing materials, reduction of energy-absorbing capacity and mechanical properties of materials, etc.

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

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Problems solved by technology

However, in the above-mentioned processes, on the one hand, once the breakage of chemical bonds and macroscopic cracks and fractures occur, they cannot be recovered, which will lead to the reduction of the energy absorption capacity and mechanical properties of the material or even the inability to continue to use it. After the process, the material must be replaced in time to maintain the original performance; on the other hand, the breaking of chemical bonds is difficult to be observed and monitored quickly and easily, and accidents may occur due to the failure of energy-absorbing materials in actual use

Method used

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  • Energy absorption method based on force-induced responsive supramolecular polymer
  • Energy absorption method based on force-induced responsive supramolecular polymer
  • Energy absorption method based on force-induced responsive supramolecular polymer

Examples

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preparation example Construction

[1953] In the preparation process of the polymer, three methods of mechanical foaming, physical foaming and chemical foaming are mainly used to foam it.

[1954] Among them, the mechanical foaming method is to introduce a large amount of air or other gases into the emulsion, suspension or solution of the polymer with the help of strong stirring during the preparation of the polymer to make it a uniform foam, and then through physical or Chemical changes shape it into foam. In order to shorten the molding cycle, air can be introduced and emulsifiers or surfactants can be added.

[1955] Wherein, the physical foaming method is to use physical principles to realize the foaming of the polymer during the preparation of the polymer, which includes but is not limited to the following methods: (1) inert gas foaming method, that is, under pressure Under normal circumstances, the inert gas is pressed into the molten polymer or pasty material, and then the pressure is reduced and the te...

Embodiment 1

[1965] Example 1 The supramolecular monomer A containing a mesomolecular group was obtained by reacting compound a containing a mesosensitive group with a ligand compound b having a carboxyl group at one end under the catalysis of DCC and DMAP. 2 molar equivalents of compound b and 1 molar equivalent of tetracaprolactone terminated by hydroxyl groups at both ends were reacted under the catalysis of triethylamine to obtain supramolecular monomer B. The supramolecular monomer C was obtained by azide-alkyne click reaction of the compound c containing the composite force sensitive group and excess azide ethane.

[1966]

[1967] 1 molar equivalent of supramolecular monomer A, 4 molar equivalents of supramolecular monomer B and 5 molar equivalents of copper chloride are blended to obtain supramolecular polymer I; 1 molar equivalent of supramolecular monomer C, 4 molar equivalents of supramolecular monomer C, Molecular monomer B and 5 molar equivalents of copper chloride are blen...

Embodiment 2

[1968] Example 2 Dissolve limonene oxide and catalyst in toluene under anhydrous and air-free conditions of 90°C, keep the molar ratio of limonene oxide and catalyst at 50:1, and feed 10 bar of carbon dioxide into the reaction vessel. After the reaction is complete, the crude The product was precipitated with methanol to obtain polylimonene carbonate chain segments. Dissolve the obtained polylimonene carbonate segment and 1,3-propanediol in toluene, add the catalyst 1,5,7-triazabicyclo[4.4.0]dec-5-ene, and react at 80°C for 3 hours, Polylimonene carbonate terminated with hydroxyl groups at both ends was obtained. The resulting polymer and a certain amount of n-butyl 3-mercaptopropionate were subjected to a mercapto-ene click reaction, and the molar ratio of the side alkenyl group to the mercapto group in the polymer was kept at 1:1 to obtain a rubber-like compound whose two ends were terminated by hydroxyl groups. Polylimonene carbonate. React the acid chloride compound a co...

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Abstract

The invention discloses an energy absorption method, and provides a force-induced responsive supramolecular polymer. The force-induced responsive supramolecular polymer is used as an energy absorptionmaterial for energy absorption, and the force-induced responsive supramolecular polymer simultaneously contains at least one force-sensitive group and at least one supramolecular interaction. The force-sensitive group in the force-induced responsive supramolecular polymer generates force-induced response when the polymer is subjected to an external force effect, thus realizing the functions of detection, monitoring, warning and the like are realized; and under the combined action of the supramolecular interaction, during energy absorption, the polymer not only provides good functions of impact resistance (protection), damping, shock absorption, buffering, sound insulation, noise elimination and the like, but also has the characteristics of stimuli responsiveness, self-repairability, recoverability, repeatable processability 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 force-responsive supramolecular polymer. 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, so as to achieve effects such as impact resistance, damping, shock absorption, buffering, sound insulation, and noise reduction. At present, the materials used for energy absorption mainly include metals, polymers, and composite materials. A common energy-absorbing mechanism of polymer materials is to absorb energy through processes such as the breaking of chemical bonds such as covalent b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 不公告发明人
Owner 翁秋梅