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Combined hybrid cross-linked dynamic polymer and application thereof

A hybrid cross-linking and polymer technology, applied in the field of combined hybrid cross-linking dynamic polymers, can solve problems such as difficulty in synergistic orthogonal comprehensive performance, limited dynamic effect and dynamic regulation ability

Pending Publication Date: 2020-07-07
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

[0004] With the further expansion and deepening of research, the types of dynamic covalent bonds are becoming more and more abundant, but the current research on dynamic polymers is still in a single dynamic covalent bond system, due to the dynamic effect of a single dynamic covalent bond And dynamic control ability is limited, it is difficult to have synergistic orthogonal comprehensive performance, in order to obtain dynamic polymers with diversity and synergistic orthogonal dynamics, it is necessary to develop a new type of combinatorial hybrid cross-linked dynamic polymer to solve this problem

Method used

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  • Combined hybrid cross-linked dynamic polymer and application thereof
  • Combined hybrid cross-linked dynamic polymer and application thereof
  • Combined hybrid cross-linked dynamic polymer and application thereof

Examples

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preparation example Construction

[0420] In the preparation process of dynamic polymer foam materials, three methods of mechanical foaming, physical foaming and chemical foaming are mainly used to foam dynamic polymers.

[0421] 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.

[0422] 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 press...

Embodiment 1

[0445] Using dicumyl peroxide as an initiator, graft-modified low-molecular-weight polypropylene with maleic anhydride through melt grafting reaction to obtain graft-modified polypropylene, wherein the mass of dicumyl peroxide and maleic anhydride The ratio is 1:10.

[0446] Use equimolar amounts of 2-aminoethylaminoboronic acid and 2-(4-aminobutyl)propane-1,3-diol as raw materials, tetrahydrofuran as a solvent, and carry out condensation reaction at 50°C and pH=8 Amino compound (a) is obtained.

[0447] Weigh 25g of grafted modified polypropylene and 20mg of BHT antioxidant, add them into a dry and clean three-necked flask, heat to 160°C under nitrogen protection conditions to stir and melt, then add 2.0g of diamino compound (a), 1.5g bis(2-hydroxy)ethyl tetrasulfide (b), 1.8g 2,2'-diselenidethanol (c), 0.15g p-toluenesulfonic acid, 2.0g plasticizer DOP, 0.25g dimethyl The silicone oil continued to react under nitrogen for 3h. Then it was poured into a suitable mold, molde...

Embodiment 2

[0450] Using dicumyl peroxide as an initiator, graft-modified low-molecular-weight polyethylene with maleic anhydride through melt grafting reaction to obtain graft-modified polyethylene, wherein the mass of dicumyl peroxide and maleic anhydride The ratio is 1:10; then p-toluenesulfonic acid is used as a catalyst and 1-aminoethylboronic acid is used to obtain boric acid graft modified polymer (a) through melt grafting reaction.

[0451]

[0452] Get 20g boric acid graft modified polyethylene (a), 5g ethylene-vinyl alcohol copolymer, 3g dioctyl phthalate, 1.5g dithiocarbamic acid N-aminoethyl-S-aminoethyl ester ( b), 1.2g stearic acid, 1.2g tribasic basic lead sulfate, 0.5g di-n-butyltin dilaurate, 0.1g antioxidant 168, 0.2g antioxidant 1010, 0.2g photoinitiator DMPA, 0.25 After mixing 1 g of simethicone oil evenly, add it to a small internal mixer and knead for 10 minutes, then add 5 g of carbon fiber and continue kneading. After the kneading is completed, take out the kneade...

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Abstract

The invention discloses a combined hybrid cross-linked dynamic polymer, which contains at least one boron-containing dynamic covalent bond, at least one other dynamic covalent bond and an optional hydrogen bond, and contains at least one dynamic covalent cross-linked network, wherein the cross-linking degree of other dynamic covalent bond cross-linking reaches a gel point or above. By introducingthe boron-containing dynamic covalent bonds with different dynamics, other dynamic covalent bonds and optional hydrogen bonds into the combined hybrid cross-linked dynamic polymer, a dynamic polymer material with a wide controllable range, rich structures and various properties can be prepared. The dynamic polymer contains the difference between the boron-containing dynamic covalent bond, the other dynamic covalent bond and the hydrogen bond, so that the polymer can show dynamic reversible effects with orthogonality and synergism under different conditions, and therefore, the polymer shows good self-repairing characteristics and rich stimulus responsiveness. The dynamic polymer can be widely applied as a self-repairing material, a tough material, a sealing material, an interlayer adhesiveand the like.

Description

technical field [0001] The invention relates to the field of intelligent materials, in particular to a combined hybrid cross-linked dynamic polymer composed of boron-containing dynamic covalent bonds, other dynamic covalent bonds and optional hydrogen bonds. Background technique [0002] The progress of material science and technology has greatly promoted the development and changes of human society. Since the beginning of the new century, the high-tech group formed by information technology, genetic engineering technology, new energy technology, aerospace technology, nanotechnology, etc. has greatly promoted the development of materials. The rapid development of science. Traditional single structural materials or functional materials can no longer meet the needs of these rapidly developing high-tech fields, and various multifunctional and intelligent materials have also emerged as the times require. [0003] In the traditional concept of polymer synthesis, new molecules ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08L51/06C08L83/04C08K5/55C08L83/08C08L71/02C08K13/02C08K3/34C08K3/36C08K5/37C08L25/06
CPCC08J3/24C08J3/246C08L51/06C08L83/08C08L25/06C08J2351/06C08J2483/04C08J2383/08C08J2471/02C08J2325/06C08J2425/06C08L2205/025C08L83/04C08K5/55C08L71/02C08K13/02C08K3/346C08K3/36C08K5/37
Inventor 不公告发明人
Owner 厦门逍扬运动科技有限公司
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