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Energy-absorbing method based on dynamic polymer

A technology of polymers, polymer chains, applied in the field 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
  • Energy-absorbing method based on dynamic polymer
  • Energy-absorbing method based on dynamic polymer

Examples

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Effect test

preparation example Construction

[0335] 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.

[0336] 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.

[0337] 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

[0390] Take a certain amount of (diisopropylamino) dichloroborane and dissolve it in tetrahydrofuran solvent to prepare a 0.5mol / L solution, add a small amount of acetic acid dropwise and mix for 30min, and set aside; take a dry and clean reaction bottle, Add 20g of polyoxypropylene glycol (molecular weight is about 2000), then add 120mL of tetrahydrofuran, stir and dissolve at room temperature, then slowly add 20mL of (diisopropylamino) dichloroborane tetrahydrofuran solution dropwise, and then add 2mL Triethylamine, under the protection of nitrogen, the above mixed solution was continuously stirred at 80° C., and the water generated by the reaction was continuously excluded during the reaction. With the stirring, the viscosity of the solution continued to rise, and after stirring for 4 hours, a polymer fluid with a certain viscosity was obtained.

[0391] The dynamic polymer has the effect of "shear thickening". This polymer can be applied to the explosion protection of flam...

Embodiment 2

[0393] The amount of triethylsilylboronic acid pinacol ester and hydroxyl-terminated polyurethane diol (using triethylamine as catalyst, reacting with 1,4-butanediol by excess hexamethylene diisocyanate) prepared, molecular weight about 2000) was dissolved in toluene solvent, a small amount of acetic acid was added dropwise, stirred and mixed for 30 minutes, then an appropriate amount of triethylamine was added, after mixing evenly, it was reacted at 80°C for 4 hours under the protection of nitrogen to obtain a relatively viscous The polymer samples can be used as interlayer adhesives for multi-layer glass and multi-layer sheets for explosion-proof and bullet-proof, etc.

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Abstract

The invention discloses an energy-absorbing method based on a dynamic polymer. The method is characterized in that the dynamic polymer containing an inorganic borate bond produced by a reaction of aninorganic boric acid element with a monohydroxy element and an optional supramolecular hydrogen bond is used as an energy-absorbing material for energy-absorbing protection, wherein the inorganic 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 formation or maintenance of the structure of the dynamic polymer.Due to dynamic reversibility of the dynamic inorganic borate bond, the dynamic polymer has the characteristics of energy dissipation and energy absorption; as an energy-absorbing material, the dynamic polymer can provide the good functions of damping, shock absorption, sound insulation, noise abatement, impact resistance, high toughness and the like; and the dynamic polymer is especially applicable 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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IPC IPC(8): C08G65/337C08G18/83C08G18/80C08G18/67C08G18/69C08G83/00C09D175/14C08F220/58C08F220/54C08F220/18C08F8/42
CPCC09D175/14C08F8/42C08F220/18C08F220/54C08F220/58C08G18/6715C08G18/69C08G18/8054C08G18/838C08G65/337C08G83/006C08G2650/50C08F220/1804
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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