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High-temperature electrostatic energy storage double-chain structure polymer dielectric medium and preparation method thereof

A technology of chain structure and polymer, which is applied in the fields of double-chain structure polymer materials and preparation, high-temperature electrostatic energy storage double-chain structure polymer dielectrics and preparation, can solve problems such as poor high-temperature performance, and achieve wide thermal performance and low dielectric strength. The effect of electrical loss

Active Publication Date: 2021-07-09
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the current situation of poor high-temperature performance of existing polymer dielectrics, the present invention provides a novel high-temperature electrostatic energy storage double-chain structure polymer dielectric and a preparation method thereof

Method used

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  • High-temperature electrostatic energy storage double-chain structure polymer dielectric medium and preparation method thereof
  • High-temperature electrostatic energy storage double-chain structure polymer dielectric medium and preparation method thereof
  • High-temperature electrostatic energy storage double-chain structure polymer dielectric medium and preparation method thereof

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Embodiment 1

[0047] This embodiment relates to a molecular weight in the above-mentioned double-chain structure polymer, and its structure is shown in formula I-1:

[0048] where n is 80.

[0049] Its synthetic steps are as follows:

[0050] 1.1 Synthesis of bifunctional norbornene imide intermediates

[0051] Put 4-aminophenylsulfone and 5-norbornene-2,3-dicarboxylic acid anhydride in glacial acetic acid solution, and carry out amide reaction under the catalysis of 4-dimethylaminopyridine to obtain bifunctional norbornene imide Intermediates; specifically:

[0052] Add 1.19 g of 4-aminophenylsulfone, 1.64 g of 5-norbornene-2,3-dicarboxylic anhydride, 0.224 g of 4-dimethylaminopyridine and 50 ml of glacial acetic acid into a 250 ml three-necked flask. The container was put into an oil bath at 110° C., and reacted for 12 hours. After the reaction, the reaction liquid was poured into 200 mL of water, the filtrate was filtered, and the obtained solid was recrystallized in 20 mL of ethan...

Embodiment 2

[0064] This embodiment relates to a molecular weight in the above-mentioned double-chain structure polymer, and its structure is as shown in formula I-2:

[0065] where n is 120.

[0066] 1.4 Synthesis and film-making process of double-chain structure polymer (I-2)

[0067] The obtained bifunctional norbornene monomer is subjected to ROMP reaction with Grubbs catalyst under anhydrous and oxygen-free conditions. After the reaction is terminated, the polymer product is diluted, settled, washed, and dried to obtain the double-chain structure polymer, specifically for:

[0068] Add 108 mg (0.2 mmol) of bifunctional norbornene pyrrolidine monomer into a 250 mL reaction tube, dissolve with 20 mL of 4,4-diaminodiphenylmethane, freeze with liquid nitrogen, and replace with nitrogen three times. After thawing is completed, the second generation Grubbs catalyst, 1,3-bis(2,4,6-trimethylphenyl)-2-(imidazolidinylidene)(dichlorobenzylidene)( Tricyclohexylphosphine) ruthenium (0.36 mg, ...

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Abstract

The invention discloses a high-temperature electrostatic energy storage double-chain structure polymer dielectric and a preparation method thereof. The structural general formula of a double-chain polymer insulating material is shown in the specification, wherein n represents the unit number of a repetitive structure. The polymer is obtained by initiating a bifunctional norbornene pyrrolidine monomer to be subjected to ring-opening metathesis polymerization (ROMP) through a Grubbs catalyst. The polymer has a molecular structure with double main chains, and a diphenyl sulfonyl structure is a bridging unit of the polymer and is also a polar dipole unit. The polymer film prepared by the method has the characteristics of transparency, flexibility, easiness in processing, high glass transition temperature, high thermal conductivity, high dielectric constant, low dielectric loss, high energy storage density, high energy storage efficiency and the like, and shows a stable electrostatic energy storage characteristic at 200 DEG C; the polymer dielectric medium is suitable for preparing advanced electronic and electrical equipment such as high-energy-storage-density capacitors, embedded capacitors, field effect transistors and the like in a high-temperature environment.

Description

technical field [0001] The invention relates to a high-temperature electrostatic energy storage double-chain structure polymer dielectric and a preparation method thereof, in particular to a double-chain structure polymer material with high electrostatic energy storage capacity at high temperature and a preparation method thereof, belonging to dielectric materials and energy storage materials Preparation technology field. Background technique [0002] Polymer dielectrics with high electrostatic energy storage capacity have irreplaceable applications in the electrical and electronic fields due to their exceptionally fast energy conversion rate, high dielectric strength, and environmental friendliness. With the intensification of miniaturization and weight reduction of electronic equipment and application requirements in extreme environments, higher requirements are placed on the energy storage capacity and reliability of polymer dielectrics at high temperatures. Under a cons...

Claims

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Application Information

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IPC IPC(8): C08G61/12C08J5/18C08L65/00
CPCC08G61/124C08J5/18C08G2261/418C08G2261/11C08G2261/1452C08G2261/228C08G2261/3241C08G2261/354C08G2261/55C08J2365/00
Inventor 黄兴溢陈杰
Owner SHANGHAI JIAO TONG UNIV