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

A technology of hybrid cross-linking and cross-linking network, 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 hybrid cross-linked network dynamic polymer
  • Energy-absorbing method based on hybrid cross-linked network dynamic polymer
  • Energy-absorbing method based on hybrid cross-linked network dynamic polymer

Examples

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preparation example Construction

[0256] In the preparation process of the dynamic polymer, for the dynamic polymer with the first kind of network structure (containing only one cross-linked network, and this cross-linked network contains both common covalent cross-links and inorganic borate bond cross-links), It can be obtained by using at least one inorganic boron compound (I) and at least one compound (II) containing a single hydroxyl group to participate in the reaction to form an inorganic borate bond and a common covalent bond for hybrid crosslinking; or use at least one A compound (III), or it participates in the reaction with at least one inorganic boron compound (I) and / or at least one compound (II) containing a single hydroxyl group to form an inorganic borate bond and a common covalent bond for hybridization Obtained by cross-linking; or by using at least one compound (IV), or by participating in the reaction with at least one compound (V) to generate common covalent bonds for hybrid cross-linking; w...

Embodiment 1

[0359] Take by weighing 20.5g side group and contain the random copolymer of inorganic boronic acid group and succinic anhydride group (first take AIBN as initiator, vinyl chloride, (but-3-en-1-yl) succinic anhydride as monomer, by free base polymerization to obtain the random copolymer 1 of the two; then use p-toluenesulfonic acid as a catalyst to prepare N-(2-aminoethyl) boric acid and random copolymer 1 through amidation reaction), 12.5g A random copolymer containing hydroxyl and amino groups in side groups (with AIBN as the initiator, N-(3-aminopropyl) acrylamide and hydroxyethyl acrylate as monomers, prepared by free radical polymerization), 0.15g Toluenesulfonic acid, 1.5g di-n-butyltin dilaurate, 5.2g dioctyl phthalate, 0.25g stearic acid, 0.06g antioxidant 168, 0.12g antioxidant 1010 are mixed evenly, and then added to the small compact Banbury blending is carried out in the mixer, and the mixing temperature is controlled below 40°C. After the mixing is completed, tak...

Embodiment 2

[0361] Weigh a certain amount of random copolymer 1 containing amide groups and hydroxyl groups in side groups (using AIBN as the initiator, butyl acrylate, isopropyl acrylamide, and hydroxyethyl acrylate as monomers, prepared by RAFT polymerization) and dissolve Prepare a 0.25mol / L solution in tetrahydrofuran solvent. Take 60mL of the solution of random copolymer 1, add hexamethylene diisocyanate in an amount of 36% of the hydroxyl group, 7.5% by mass fraction (accounting for the total solids of the system) of organic montmorillonite dispersed in an appropriate amount of tetrahydrofuran, and stir to disperse After 5 minutes, ultrasonication was carried out for 10 minutes, and then 3 drops of dibutyltin dilaurate were added dropwise, stirred and mixed evenly, protected by nitrogen gas, heated to 85° C. for 1.5 hours; and then added a macromolecular dibasic boric acid compound ( Using triethylamine as catalyst, dichloromethane as solvent, excess 4-morpholino boronic acid and 1,...

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Abstract

The invention discloses an energy-absorbing method based on a hybrid cross-linked network dynamic polymer. The method is characterized in that the hybrid cross-linked network dynamic polymer containing common covalent cross-linking, a dynamic covalent bond and an optional supramolecular hydrogen bond is used as an energy-absorbing material for energy-absorbing protection, wherein the dynamic covalent bond is an inorganic borate bond. The dynamic polymer provided by the invention integrates the respective advantages of the common covalent cross-linking and the dynamic covalent bond; the commoncovalent cross-linking endows the dynamic polymer with certain strength and stability; the dynamic covalent bond in the dynamic polymer has good dynamic reversibility, so the dynamic polymer has the characteristics of energy dissipation and energy absorption and can provide the functions of damping, shock absorption, sound insulation, impact resistance, noise abatement, impact resistance, high toughness and the like as an energy-absorbing material; and the dynamic polymer is especially applicable to the body protection of people during exercises, daily life and working, the body protection ofthe 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 common covalent crosslinks and dynamic covalent crosslinks. 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 incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/22C08L33/24C08K5/42C08K5/12C08K5/09C08K5/526C08K5/134C08F214/06C08F222/04C08F8/42C08F220/60C08F220/28C08F220/18C08F220/54C08F226/02C08G18/62C08G18/64C08K3/34C08G81/02C08G18/50C08G18/32C08G18/66A43B13/04
CPCA43B13/04C08F8/42C08F214/06C08F220/18C08F220/1804C08F220/54C08F220/60C08F2438/03C08G18/3206C08G18/3228C08G18/5045C08G18/6225C08G18/64C08G18/6674C08G18/6685C08G81/021C08G2101/00C08G2410/00C08K3/346C08L27/22C08L33/24C08K5/42C08K5/12C08K5/09C08K5/526C08K5/1345C08F222/04C08F220/281C08F226/02
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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