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Crosslinkable high dielectric norbornene copolymer, norbornene crosslinked polymer and preparation method thereof

A norbornene and copolymer-like technology, applied in the field of high dielectric polymer preparation, can solve the problems of being susceptible to solvents, brittleness, corrosion, etc.

Inactive Publication Date: 2017-04-19
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some obvious disadvantages in the application process of this dielectric functional segment, such as being easily corroded by solvents, brittle

Method used

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  • Crosslinkable high dielectric norbornene copolymer, norbornene crosslinked polymer and preparation method thereof
  • Crosslinkable high dielectric norbornene copolymer, norbornene crosslinked polymer and preparation method thereof
  • Crosslinkable high dielectric norbornene copolymer, norbornene crosslinked polymer and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0061] The preparation method of the present invention comprises the following steps:

[0062] (1) Combine endo-N-3,5-bistrifluoromethylbiphenylnorbornene pyrrolidine or exo-N-3,5-bistrifluoromethylbiphenylnorbornenepyrrolidine with exo- N-ethyl cinnamate-7-oxanorbornene imide and Grubbs catalyst were respectively dissolved in an organic solvent, frozen in liquid nitrogen, evacuated and filled with nitrogen, and thawed, and the operation was repeated 3 times. After preheating for 10 minutes, add Grubbs catalyst to endo- / exo-N-3,5-bistrifluoromethylbiphenylnorbornene pyrrolidine, stir at 30°C for 50 minutes, and exo-N-cinnamon under nitrogen protection An organic solvent solution of ethyl acetate-7-oxanorbornene imide was added thereto, and stirring was continued for 1 h.

[0063] Wherein, the catalyst addition amount is endo-N-3,5-bistrifluoromethyl biphenyl norbornene pyrrolidine or exo-N-3,5-bis trifluoromethyl biphenyl norbornene pyrrolidine 0.02 of the molar mass.

[00...

Embodiment 1

[0070] Embodiment 1: endo, the preparation of exo-configuration norbornene block copolymer

[0071] In a 25mL Schlenk reaction tube, add endo-N-3,5-bistrifluoromethylbiphenylnorbornene pyrrolidine (0.423g, 1mmol), vacuumize and replace with high-purity nitrogen for 3 times, add 3mL dichloromethane to dissolve completely. In another 25mL Schlenk reaction tube, add exo-N-ethyl cinnamate-7-oxanorbornenimide (0.339g, 1mmol), vacuumize and replace with high-purity nitrogen for 3 times, add 7.5mL di Chloromethane to dissolve completely. Under nitrogen atmosphere, weigh Grubbs first generation catalyst RuCl 2 (PCy 3 ) 2(CHPh) (16.5 mg, 0.02 mmol) was placed in the third Schlenk tube, after vacuuming and nitrogen replacement for 3 times, 2 mL of dichloromethane was added. The reaction system was frozen with liquid nitrogen, and vacuumized and filled with nitrogen. After repeating the cycle 3 times, thawed, preheated at 30°C for 10 minutes, and then quickly added the catalyst solu...

Embodiment 2

[0074] Embodiment 2: exo, the preparation of exo-configuration norbornene block copolymer

[0075] The high mesofunctional monomer in this example is exo-N-3,5-bistrifluoromethylbiphenylnorbornene pyrrolidine, and other reaction conditions and steps are the same as those in Example 1. 0.747 g of the polymer product was obtained with a yield of 98%. The resulting product is a copolymer of exo-N-3,5-bistrifluoromethylbiphenylnorbornene pyrrolidine and exo-N-ethyl cinnamate-7-oxanorbornene imide, and its structure As shown in formula (P2):

[0076]

[0077] 1 H NMR (500MHz, CDCl 3 , ppm): δ=7.97 (m, o-ArH-CF 3 ), 7.74-7.70 (m, p-ArH-CF3), 7.70-7.68 (d, ArH-CH=CH), 7.59-7.29 (m, m-ArH-NCH 2 +ArH-CH=CH), 6.84-6.58 (m, o-ArH-NCH 2 ), 6.42-6.33 (m, ArH-CH=CH), 6.05-5.30 (m, CH=CH on polymer chain), 5.1-4.9 (s, CHOCH), 4.54-4.24 (t, CH 2 OCO), 3.9-3.7(t, NCH 2 ), 3.5-3.1 (m, ArNCH 2 +CHCONCOCH), 2.8-2.3(m, CHCHCH 2 N+CHCH 2 N), 1.5-1.2(d, CHCH 2 CH); 13 C NMR (125MHz, ...

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Abstract

The invention provides a cross-linkable high dielectric norbornene copolymer. The cross-linkable high dielectric norbornene copolymer comprises a norbornene block copolymer which is formed by ring-opening metathesis polymerization of an endo-configuration norbornene monomer or an exo-configuration norbornene monomer and an exo-configuration oxa-norbornene monomer. The invention also provides a preparation method of the norbornene copolymer. According to the preparation method, the norbornene copolymer is obtained by ring-opening metathesis polymerization reaction of the endo-configuration norbornene monomer or the exo-configuration norbornene monomer and the exo-configuration oxa-norbornene monomer under the action of a Grubbs catalyst. The invention further provides a three-dimensional cross-linked network polymer formed by crosslinking of the norbornene copolymer and a preparation method thereof. The norbornene copolymer has a relatively high dielectric constant and very low dielectric loss. The preparation method of the norbornene copolymer is simple and practicable. The norbornene cross-linked polymer has relatively high dielectric constant and thermal stability, and the applied range of the norbornene crosslinked polymer in the field of thin-film capacitors is expanded.

Description

technical field [0001] The invention belongs to the technical field of high dielectric polymer preparation, in particular to a crosslinkable high dielectric norbornene copolymer, a norbornene crosslinked polymer and a preparation method thereof. Background technique [0002] The classic high dielectric materials are mostly inorganic ceramics and inorganic / organic composite materials, but they have large dielectric loss, high cost, complicated molding process, and poor flexibility. Polymer materials have the advantages of low dielectric loss, easy processing, and large-area film formation, but there are only a handful of examples of polymers with high dielectric constants. [0003] The copolymer involved in the present invention is a high dielectric polymer material, and the existing literature in the prior art reports the dielectric functional segment therein (Journal of Polymer Science, Part A: Polymer Chemistry2013, 51 (6) , 1292-1301; Journal of Polymer Science, Part A: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12C08J5/18C08J3/28C08J3/24C08L65/00
Inventor 谢美然张莎伍建华刘雯梅王俊芳
Owner EAST CHINA NORMAL UNIV
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