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Energy-absorbing method based on dynamic polymer

A polymer, dynamic technology, applied in the field of energy absorption, to achieve good controllability, outstanding energy absorption effect, and improve the effect of energy absorption

Inactive Publication Date: 2018-07-31
厦门逍扬运动科技有限公司
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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-absorbing method based on dynamic polymer
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  • Energy-absorbing method based on dynamic polymer

Examples

Experimental program
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Effect test

preparation example Construction

[0260] In the preparation process of dynamic polymer, three methods of mechanical foaming method, physical foaming method and chemical foaming method are mainly used to foam dynamic polymer.

[0261] 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 dynamic polymer to make it a uniform foam, and then through physical Or chemical changes make it gel and solidify to become a foam material. In order to shorten the molding cycle, air can be introduced and emulsifiers or surfactants can be added.

[0262] Wherein, the physical foaming method is to utilize physical principles to realize the foaming of the polymer in the preparation process of the dynamic polymer, which generally includes the following four methods: (1) inert gas foaming method, that is, after adding Press the inert gas into the molten polymer or pasty m...

Embodiment 1

[0316] Under anhydrous and oxygen-free conditions, using AIBN as an initiator, triethylamine as a catalyst, and chloroform as a solvent, react an equimolar amount of vinyl dichloroborane with 1,6-hexanedithiol at 80°C The dichloroborane double-capped compound was obtained, which was dissolved in tetrahydrofuran solvent to prepare a 0.2 mol / L solution.

[0317] Under anhydrous and oxygen-free conditions, using 4-dimethylaminopyridine and dicyclohexylcarbodiimide as a condensation agent, and chloroform as a solvent, polyethylene glycol 400 with a molar ratio of 1:2 and acrylic acid were refluxed. The double-bond-terminated polyethylene glycol is prepared by esterification, and then it is prepared by thiol-alkene click addition reaction with 3-mercapto-1,2-propanediol using AIBN as the initiator and triethylamine as the catalyst. To obtain a glycol-terminated polyethylene glycol compound, it was dissolved in a tetrahydrofuran solvent to prepare a 0.2 mol / L solution.

[0318] Mea...

Embodiment 2

[0320] Using diisopropyl (bromomethyl) borate, polyether amine with a molecular weight of about 5,000 as raw material, keeping the molar ratio at 2:1, potassium carbonate as a catalyst, and preparing boric acid through alkylation reaction at 90°C Ester-terminated polyetheramines.

[0321] Under anhydrous and oxygen-free conditions, using 4-dimethylaminopyridine and dicyclohexylcarbodiimide as condensing agent and chloroform as solvent, polypropylene glycol 1000 with a molar ratio of 1:2 and acrylic acid were passed through ester under reflux conditions. The double-bond-terminated polypropylene glycol was obtained by chemical reaction, and then AIBN was used as the initiator and triethylamine as the catalyst, and the diol-terminated polypropylene glycol was prepared by mercapto-1,2-propanediol through mercapto-alkene click addition reaction. terminal polypropylene glycol compound.

[0322] Take 12.5g of borate-capped polyetheramine and place it in a dry and clean beaker, add 8...

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Abstract

The invention discloses an energy-absorbing method based on a dynamic polymer. The method employs a dynamic polymer containing a cyclic organic borate bond and an optional supramolecular hydrogen bondfor energy-absorption, wherein the cyclic organic borate bond exists as a polymeric chain joint and / or cross-linked chain joint for the dynamic polymer and is a necessary condition for the formationor maintenance of the structure of the dynamic polymer. Due to dynamic reversibility of the cyclic organic borate bond, the dynamic polymer has an energy dissipation characteristic; as an energy-absorbing material, the dynamic polymer can provide the good functions of damping, shock absorption, sound insulation, noise abatement, impact resistance and the like; and the dynamic polymer is especiallyapplicable to the body protection of people during exercises, daily life and working, the body protection of the military police, explosion prevention, protection in airborne landing and aerial delivery, collision prevention of automobiles, anti-impact protection of electronic products and electric appliances, etc.

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 reversible covalent bonds. 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 absorption mainly include metals, polymers, com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/337C08G81/00C08F283/00C08F230/06C08F136/06C08F8/42C08F8/14C08G65/334C09D187/00D06M15/568C09D171/02C08L87/00
CPCC08G65/337C08F8/42C08F283/006C08G65/3344C08G65/3348C08G81/00C08G2650/04C08L87/00C08L2203/16C09D171/02C09D187/00D06M15/568C08F230/06C08F8/14C08F136/06
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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