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Energy absorbing method based on dynamic polymer composition

A technology of polymers and compositions, applied in the field of energy absorption, which can solve the problems of energy absorption capacity and mechanical properties reduction, unusable and other problems

Inactive Publication Date: 2019-04-23
翁秋梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned processes, the breaking of covalent bonds and macroscopic cracks and breaks will reduce the energy-absorbing capacity and mechanical properties of the material or even make it impossible to continue to use. After one or a few energy-absorbing processes, the material must be replaced in time To maintain the original performance

Method used

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  • Energy absorbing method based on dynamic polymer composition
  • Energy absorbing method based on dynamic polymer composition
  • Energy absorbing method based on dynamic polymer composition

Examples

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preparation example Construction

[0174]A preferred preparation method of a dynamic polymer composition ionic liquid gel of the present invention includes but not limited to the following steps: adding each raw material and other raw materials for preparing dynamic polymer composition components A and B to the ionic liquid, so that The sum of the mass fractions of components A and B of the prepared dynamic polymer composition is 0.5 to 70%. Polymerization, coupling, crosslinking or other types of chemical reactions are carried out by the appropriate means. After the reaction is completed, it is made A dynamic polymer composition ionic liquid gel. A preferred preparation method of another dynamic polymer composition ionic liquid gel of the present invention includes but not limited to the following steps: the dynamic polymer composition components A, B and other raw materials are swollen in an ionic liquid or containing In the solvent of the ionic liquid, the sum of the mass fractions of the components A and B ...

Embodiment 1

[0234] Preparation of a polyester-based dynamic polymer composition common solid for energy absorption.

[0235] Using thionyl chloride as an acid chloride reagent, the carboxyl group of butynedioic acid is converted into an acid chloride group. 10 molar equivalents of adipoyl chloride, 20 molar equivalents of butynediyl chloride, 27 molar equivalents of hexanediol and 2 molar equivalents of glycerin are reacted under the catalysis of triethylamine to obtain the dynamic polymer component A whose skeleton contains acetylenic bonds.

[0236] 100 parts by mass of the obtained copolymer and 5 parts by mass of the catalyst 20 were fully mixed, placed in a mold, and molded to obtain the dynamic polymer composition product of the present invention. Products made of this dynamic polymer composition are used as impact-resistant parts for cushioning and energy absorption. When cracks appear in the product, spray hot toluene solution (>80°C) containing zinc chloride to perform self-repai...

Embodiment 2

[0238] Preparation of a polyether-based dynamic polymer composition common solid for energy absorption.

[0239] 13 molar equivalents of 1,4-diiodo-2,5-dimethyl ether, 10 molar equivalents of propynyl-decaethylene glycol-propynyl and 2 molar equivalents of 1,3,5-tris(2-propane Alkynyloxy) benzene is blended and reacted under the catalysis of bis(triphenylphosphine)platinum dichloride, cuprous iodide and diethylamine to obtain component A of the dynamic polymer composition of the present invention.

[0240] At room temperature, add 5 parts by mass of urea, 0.5 parts by mass of ammonium chloride and 0.5 part by mass of resorcinol to 250 parts by mass of an aqueous solution containing 0.5 wt % ethylene-maleic anhydride copolymer, and add sodium hydroxide or hydrochloric acid Adjust the pH to 3.5. The solution was stirred at a speed of 800 rpm, and a small amount of n-heptanol was added to defoam. Slowly add 60 parts by mass of toluene and 15 parts by mass of manganous chloride ...

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Abstract

The present invention discloses an energy absorbing method based on a dynamic polymer composition, and provides a dynamic polymer composition and applications of the dynamic polymer composition as theenergy absorbing material to carry out energy absorbing, wherein the dynamic polymer composition at least contains a component A and a component B, the component A is a dynamic polymer comprising atleast a cross-linking network, and contains an unsaturated carbon-carbon triple bond capable of being subjected to an alkyne cross translocation double decomposition reaction and an optional hydrogenbond group capable of forming supramolecular hydrogen bond action, and the component B is a catalyst and / or a complex thereof for catalyzing the exchange reaction of the dynamic covalent bond in the component A. According to the present invention, the composition as the energy absorbing material can provide good impact resistance (protection), good damping, good shock absorption, good buffer, goodsound insulation, good noise reduction and other functions, and by interacting with the optional supramolecular hydrogen bond, the material can have characteristics stimulating responsiveness, self-healing property, recyclability, repeatable processability and the like, and can be used in all aspects of daily life and various professional fields.

Description

technical field [0001] The invention relates to an energy absorbing method, in particular to an energy absorbing method based on a dynamic polymer composition comprising at least two components A and B. 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 ch...

Claims

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Application Information

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IPC IPC(8): C08J3/24
CPCC08J3/24C08J3/246C08J2333/04C08J2367/06C08J2371/00C08J2375/04
Inventor 不公告发明人
Owner 翁秋梅
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