Energy-absorbing method based on combined hybrid cross-linked dynamic polymer

A hybrid crosslinking and polymer technology, applied in the field of energy absorption, can solve the problems of impact energy dissipation, human injury, limited shock absorption performance, etc.

Inactive Publication Date: 2018-10-02
厦门逍扬运动科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this material is used in human body protection or precision instrument protection, the main disadvantage is that the shock absorption performance is limited. When subjected to severe impacts, ord

Method used

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  • Energy-absorbing method based on combined hybrid cross-linked dynamic polymer
  • Energy-absorbing method based on combined hybrid cross-linked dynamic polymer
  • Energy-absorbing method based on combined hybrid cross-linked dynamic polymer

Examples

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preparation example Construction

[0257]In the preparation process of combined hybrid cross-linked dynamic polymers, for dynamic polymers containing only one cross-linked network (this cross-linked network contains both dynamic covalent cross-links and ordinary covalent cross-links), it can utilize at least one A compound (1), or it participates in a reaction with at least one compound (2) to generate a boron-containing dynamic covalent bond and a common covalent bond for hybrid cross-linking; or utilize at least one compound (3), or it is combined with At least one compound (1) and / or at least one compound (2) participate in the reaction to generate boron-containing dynamic covalent bonds and ordinary covalent bonds for hybrid crosslinking; or use at least one compound (4), or its Participate in the reaction with at least one compound (5) to form a common covalent bond for hybrid crosslinking; wherein, at least one compound (1) or at least one compound (2) or at least one compound (3) contains one or One or m...

Embodiment 1

[0336] Add a certain amount of dichloromethane solvent in a three-necked flask, add 5 mmol 1,2-bis(chlorodimethylsilyl)ethane and 4 mmol polyethylene glycol 800, add an appropriate amount of triethylamine and stir to mix evenly, Add 0.01mol ethyl boric acid, heat to 80°C for 4 hours to form a linear polymer, then add 5mmol polyacrylic acid and 3mmol aziridine cross-linking agent to continue the reaction for 1 hour, then add 5wt% pre-ground titanium dioxide , ultramarine blue, chrome yellow, phthalocyanine blue, soft carbon black mixed powder, 3wt% organic bentonite, 3wt% nano-silica, 5wt% hydroxyethyl cellulose, 2wt% dibutyltin dilaurate, trace fluorescent whitening agent After mixing KSN and light stabilizer 770 evenly, let it stand for 12 hours and apply it on the surface of the substrate to obtain a coating with energy-absorbing properties.

Embodiment 2

[0338] With ethylene glycol and ethylene oxide as raw materials and boron trifluoride ether as a catalyst, hydroxyl-terminated polyethylene oxide is synthesized by cationic ring-opening polymerization, and then 1 molar amount of hydroxyl-terminated polyethylene oxide is mixed with 2 moles of acrylic acid are esterified to obtain polyethylene oxide diacrylate, and then reacted with 2 moles of 3-mercapto-1,2-propanediol to obtain 1,2-diol through thiol-ene click reaction Double-capped polyethylene oxide.

[0339] Add 0.02mol of 1,2-diol double-capped polyethylene oxide, 0.02mol of bis(trimethylol)propane, 0.04mol of 1,4-benzenediboronic acid into a dry and clean reaction flask, and add an appropriate amount of After the triethylamine was stirred and mixed evenly, it was heated to 80°C for 5 hours to obtain a linear dynamic polymer; another reaction bottle was taken, and 0.02 mol of polyoxypropylene triol with a molecular weight of about 2,000 was added, followed by 0.03 mol of t...

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Abstract

The invention discloses an energy-absorbing method based on a combined hybrid cross-linked dynamic polymer. The energy-absorbing method realizes energy absorption by using the combined hybrid cross-linked dynamic polymer containing at least two boron-containing dynamic covalent bonds and common covalent cross-linking formed by a common covalent bond. Through introduction of the boron-containing dynamic covalent bonds with different dynamic natures and combination of the boron-containing dynamic covalent bonds with the common covalent bond, polymeric materials of abundant structures and with awide controllable range and diversified properties can be prepared. Due to the difference between the different boron-containing dynamic covalent bonds in the dynamic polymer, the dynamic polymer canpresent hierarchical dynamic reversible effects, so the dynamic polymer shows good energy dissipation and energy absorption characteristics and has toughening, damping and impact-resisting effects onmaterials in specific structures. The dynamic polymer of the invention is applicable to the body protection of people in exercises and daily life, the body protection of the military police, explosionprevention, 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 combined hybrid cross-linked dynamic polymer composed of at least two boron-containing dynamic covalent bonds and common covalent cross-links. Background technique [0002] In daily life and actual production process, it is often necessary to use methods or means to avoid or slow down the impact of physical impact caused by impact, vibration, vibration, explosion, sound, etc. Among them, the most widely used is the use of a A kind of energy-absorbing material for energy absorption, so as to play an effective role in protecting against physical impact. Materials used for energy absorption mainly include metals, polymers, and composite materials. Among them, the energy loss sources of polymer materials mainly include the following types: 1. Using the phenomenon that polymers have a high loss factor near their glass transition temperature to absorb...

Claims

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Application Information

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IPC IPC(8): C08G79/08C09D185/04C09D133/02C09D5/32C09D7/61C09D7/63C09D7/65C08L85/04C08L75/08C08G18/48C08G65/334C08G65/332C08G65/28
CPCC08G79/08C08G18/4829C08G65/2609C08G65/3322C08G65/3344C08L75/08C08L85/04C08L2205/03C09D5/32C09D133/02C09D185/04C08L33/02C08L1/284C08K13/02C08K3/36C08K3/346
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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