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Hybrid crosslinked dynamic polymer

A hybrid cross-linking and polymer technology, applied in the field of intelligent polymers, can solve the problems of dynamic polymers losing their dynamic properties, dynamic reversible effects, limited control ability, and inability to combine structural and dynamic properties.

Inactive Publication Date: 2019-01-15
翁秋梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cross-linked polymers commonly used at present are often composed of a single covalent bond or a single dynamic bond, and it is not possible to organically combine the structural and dynamic properties in the polymer, and its dynamic properties are reversible. The effect and control ability are also very limited
At the same time, dynamic polymers are used in more and more diverse environments, and the resulting dynamic polymers sometimes lose their dynamic properties in specific environments.

Method used

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Examples

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preparation example Construction

[0193] 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.

[0194] 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.

[0195] 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

[0255] Add 100 parts by mass of dioctyl phthalate, 71 parts by mass of acrylamide, 19.3 parts by mass of acryloyloxyethyltrimethylammonium chloride, 13.6 parts by mass of sodium acetate, 0.1 parts by mass of heat Initiator potassium persulfate (KPS) and 0.77 parts by mass of N,N'-methylene bisacrylamide, then bubbled with nitrogen for 10 minutes to remove oxygen, then added 0.1 parts by mass of N,N,N',N'-tetramethyl base diamine and 0.1 parts by mass of nano-silica, disperse and stir evenly with ultrasonic waves, transfer the solution to a mold, and let it stand at 40°C for 1 hour to prepare a dynamic polymer plasticizer swelling gel. It was made into a dumbbell-shaped sample with a size of 80.0×10.0×2.0mm, and a tensile test was performed on a tensile testing machine. The tensile rate was 50mm / min. The measured tensile strength of the sample was 1.78±0.23MPa, and the elongation at break The ratio is 421.65±47.38. The dynamic polymer plasticizer swelling gel has good toughness...

Embodiment 2

[0257] Add 50 parts by mass of N-methylpyrrolidone, 14 parts by mass of 3-(3-[(allyloxy)carbonyl]pyridinium-1-yl) propane-1-sulfonate, 36 parts by mass part of acrylamide, 0.05 part by mass of KPS, 0.35 part by mass of N,N'-methylenebisacrylamide, deoxygenated by bubbling nitrogen for 10 minutes, and then added 0.07 part by mass of N,N,N',N'-tetramethyl Diamine, 0.5 parts by mass of glass fiber, and 14 parts by mass of ethyl isocyanate were evenly mixed, and then the solution was transferred to a mold and left to stand at 40° C. for 1 hour to prepare a dynamic polymer organogel. It was made into a dumbbell-shaped sample with a size of 80.0×10.0×2.0mm, and a tensile test was carried out using a tensile testing machine. The tensile rate was 50mm / min, and the measured tensile strength of the sample was 1.35±0.16MPa, and the elongation at break The ratio is 516.23±72.36. The dynamic polymer organogel has good toughness and self-healing property, and it can be made into a sealing m...

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Abstract

The invention relates to a hybrid crosslinked dynamic polymer, which contains ionic interaction, covalent bond formed covalent crosslinking and optional other supramolecular interactions. Specifically, covalent crosslinking reaches the gel point of covalent crosslinking or above in at least one crosslinked network, and the other supramolecular interactions are at least selected from metallophilicinteraction, dipole-dipole interaction, hydrogen bond interaction, cation-pi interaction, anion-pi interaction, benzene-fluorobenzene interaction, pi-pi stacking interaction, ion hydrogen bond interaction, hydrogen bond interaction, metal-ligand interaction, and radical cation dimerization. As ionic interaction has the advantages of stable action effect, easy regulation of strength, abundant formation modes and the like, the dynamic polymer has self-repairability and good toughness, and covalent crosslinking endows the polymer with certain strength and stability. The dynamic polymer can be widely applied as a self-repair material, ductile material, sealing material, adhesive, force sensor and the like.

Description

Technical field: [0001] The invention relates to the field of intelligent polymers, in particular to a hybrid cross-linked dynamic polymer composed of covalent bonds and ionic interactions. Background technique: [0002] Supramolecular polymers are a new field of polymer science research. Dynamic polymers based on supramolecular interactions not only have the molecular structure stability of traditional covalent polymers, but also have the dynamic reversibility of supramolecular polymers. The dynamic conditions are relatively mild, and the dynamic performance is good, which is a new type of intelligent material. [0003] The cross-linked polymers commonly used at present are often composed of a single covalent bond or a single dynamic bond, and it is not possible to organically combine the structural and dynamic properties in the polymer, and its dynamic properties are reversible. The effect and control ability are also very limited. At the same time, dynamic polymers are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/34C08F222/38C08F216/14C08F275/00C09J133/26C08G83/00
CPCC09J133/26C08F220/56C08F275/00C08G83/008C08F216/1491C08F222/385C08F220/34
Inventor 不公告发明人
Owner 翁秋梅
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