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Energy absorption method based on dynamic polymer

A polymer, dynamic technology, applied in the direction of graft polymer adhesives, adhesive types, adhesives, etc., can solve the problems of human injury, limited shock absorption, equipment damage, etc.

Inactive Publication Date: 2019-03-05
翁秋梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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, ordinary protective materials cannot effectively dissipate the impact energy, and there will still be A strong impact force acts on the human body or equipment, which may cause personal injury or equipment damage

Method used

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  • Energy absorption method based on dynamic polymer
  • Energy absorption method based on dynamic polymer
  • Energy absorption method based on dynamic polymer

Examples

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preparation example Construction

[0237] 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.

[0238] 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 shape and become a foam material. In order to shorten the molding cycle, air can be introduced and emulsifiers or surfactants can be added.

[0239] Wherein, the physical foaming method is to use physical principles to realize the foaming of the polymer during the preparation of the dynamic polymer, which includes but not limited to the following methods: (1) inert gas foaming method, that is, after adding Press the inert gas into the molten polymer or pasty material under ...

Embodiment 1

[0293] In No. 1 reactor, 1 molar equivalent of acryloyloxyethyltrimethylammonium chloride, 1 molar equivalent of sodium allylsulfonate and 10 molar equivalents of ethyl acrylate were mixed and dissolved in tetrahydrofuran, and 0.1 molar Equivalent polyvinyl alcohol, 0.2 molar equivalent of fatty alcohol polyoxyethylene ether sulfate (AES) and 0.05 molar equivalent of potassium persulfate, stir and mix evenly, the raw materials are pre-emulsified in an emulsifier, and then the pre-emulsion Transfer to No. 2 reactor, then add deionized water, stir evenly, raise the temperature to 80°C, after the reaction, cool the product to below 40°C, adjust the pH of the product to 8-9 with sodium bicarbonate, and obtain the modified Ethyl acrylate emulsion; Add 31 parts by mass of water, 2 parts by mass of coconut oil diethanolamide, 1 part by mass of sodium dodecylbenzenesulfonate, 0.3 parts by mass of antifungal agent Z, 1 part by mass of poly Acrylate, 1 mass part of defoamer, after stirr...

Embodiment 2

[0295] In No. 1 reactor, 1 molar equivalent of 1-penten-4-one, 1 molar equivalent of viologen-containing compound at the end of a vinyl group, and 1 molar equivalent of a compound with an allyl group at one end and an oxazolidinone at the other end (Allyl hydroxyethyl ether and 5-chloromethyl-2-oxazolidinone are dissolved in toluene at a molar ratio of 1:1, using potassium carbonate as a catalyst and tetrabutylammonium bromide as a phase transfer agent. ) and 10 molar equivalents of acrylamide were dissolved in DMSO (dimethyl sulfoxide), and 0.2 molar equivalents of AIBN (azobisisobutyronitrile) was added, after stirring evenly, 0.05 molar equivalents of nano-silica and 0.05 molar equivalent of graphene, heated up to 90°C, reacted for 6 hours, and kept the solvent to prepare a dynamic polymer solution. The viscosity of the polymer increased with the increase of the shear rate, and the shear increase Thick effect, it can be used to make liquid military and police protective equ...

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Abstract

The invention discloses an energy absorption method based on a dynamic polymer. The energy absorption method employs the dynamic polymer containing at least one second set supramolecular interaction and comprising an optionally first set supramolecular interaction for performing energy absorption, wherein the second set supramolecular interaction includes an ion interaction, an ion-dipole interaction, a subject-object interaction, an ion hydrogen bond interaction, a metallophilic interaction, a dipole-dipole interaction, a halogen bond interaction, a cation-[pi] interaction, an anion-[pi] interaction, a benzene-fluorobenzene interaction, a [pi]-[pi] stacking interaction and a free radical cation dimerization interaction, and the first set supramolecular interaction includes a hydrogen bondinteraction, and a metal-ligand interaction. The dynamic polymer can exhibit energy dissipation characteristics by virtue of the dynamic reversibility of the supramolecular interaction, and can be used as an energy absorbing material to provide functions of good damping, shock absorption, sound insulation, noise reduction, impact resistance, and the like.

Description

Technical field: [0001] The invention relates to an energy absorbing method, in particular to an energy absorbing method based on a dynamic polymer formed by supramolecular action. 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, composite mater...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D7/61C09D7/63C09D7/65C08F220/18C08F220/34C08F228/02C08F220/14C08F220/42C08F2/44C09J151/02C08J3/075C08L33/24
CPCC08F2/44C08F220/14C08F220/18C08F220/1804C08J3/075C08J2333/24C08K2003/2241C08K2003/2275C08K2003/265C08K2201/011C08L2205/02C09D133/08C09J151/02C08L33/04C08L1/28C08K13/04C08K7/28C08K3/32C08K3/22C08K3/34C08K3/26C08F220/34C08F220/42C08L83/04C08K7/06C08K3/04C08K3/08C08F228/02
Inventor 不公告发明人
Owner 翁秋梅
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