Polyimide resin containing furan ring and preparation method of polyimide resin

A technology of polyimide resin and furan ring, applied in the field of polyimide resin containing furan ring and preparation thereof, can solve the problems such as the glass transition temperature and thermal stability of polymers need to be further improved, and achieve high usage Effects of temperature and thermal stability

Active Publication Date: 2018-06-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For bio-based polyimides, many researchers have engaged in a lot of research in recent years, such as: the patent US 2014 / 0323679 published by Tatsuo Kaneko uses amine cinnamic acid to prepare corresponding bio-based polyimides through light-induced reactions, and The patent US 9238714 published by Moloy et al. uses lysinol and dianhydride to prepare corresponding bio-based polyimides, but due to the aliphatic chain structure introduced into the main chain of these bio-based polyimides, the glass transition temperature of the polymer and thermal stability needs to be further improved

Method used

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  • Polyimide resin containing furan ring and preparation method of polyimide resin
  • Polyimide resin containing furan ring and preparation method of polyimide resin
  • Polyimide resin containing furan ring and preparation method of polyimide resin

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Embodiment 1

[0049] In this embodiment, the polyimide resin containing furan ring has the following structural formula:

[0050] Wherein, n is an integer greater than zero.

[0051] The specific preparation method is: under the protection of nitrogen, add 1.6817g (4.0mmol) of 2,5-furandi(formamide-p-phenylenediamine) and 16ml of N,N-dimethylacetamide into a 50ml reaction flask at room temperature After stirring, after 2,5-furandi(formamide-p-phenylenediamine) is completely dissolved, add 2.0805g (4.0mmol) of bisphenol A type diether dianhydride and continue stirring at room temperature for 24 hours to obtain a viscous Polyamic acid solution. The solution was then diluted to a concentration of 10% by weight. Then, a mixed solution of 4 mL of acetic anhydride and 2 mL of pyridine was added, and stirring was continued at room temperature for 24 hours to obtain a polyimide solution. Then, the polyimide solution was dropped into ethanol to obtain fibrous polyimide precipitation, which was dried ...

Embodiment 2

[0061] In this embodiment, the polyimide resin containing furan ring has the following structural formula:

[0062] Wherein, n is an integer greater than zero.

[0063] The specific preparation method is: under the protection of nitrogen, add 1.6817g (4.0mmol) of 2,5-furandi(m-phenylenediamine formamide) and 16ml of N,N-dimethylacetamide into a 50ml reaction flask at room temperature. After stirring, after 2,5-furandi(m-phenylenediamine formamide) is completely dissolved, add 2.0805g (4.0mmol) of bisphenol A type diether dianhydride and continue to stir at room temperature for 24 hours to obtain a viscous Polyamic acid solution, and then dilute the solution to a concentration of 10% by weight. Then, a mixed solution of 4 mL of acetic anhydride and 2 mL of pyridine was added, and stirring was continued at room temperature for 24 hours to obtain a polyimide solution. The polyimide solution was dropped into ethanol to obtain a fibrous polyimide precipitate, which was dried to obtai...

Embodiment 3

[0067] In this embodiment, the polyimide resin containing furan ring has the following structural formula:

[0068] Wherein, n is an integer greater than zero.

[0069] The specific preparation method is: under the protection of nitrogen, add 1.6817g (4.0mmol) of 2,5-furandi(formamide-p-phenylenediamine) and 16ml of N,N-dimethylacetamide into a 50ml reaction flask at room temperature Stir, after 2,5-furandi(formamide-p-phenylenediamine) is completely dissolved, add 1.7760g (4.0mmol) of 4,4'-(hexafluoroisopropylene) diphthalic anhydride, and continue to stir at room temperature for 24 hours , A viscous polyamic acid solution is prepared, and then the solution is diluted to a weight percentage of 10%. Then, a mixed solution of 4 mL of acetic anhydride and 2 mL of pyridine was added, and stirring was continued at room temperature for 24 hours to obtain a polyimide solution. The polyimide solution was dropped into ethanol to obtain a fibrous polyimide precipitate, which was dried to...

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Abstract

The invention relates to polyimide resin containing a furan ring and a preparation method of the polyimide resin. The polyimide resin containing the furan ring is obtained by reaction of 2,5-furan bis(formamide p-phenylenediamine) or 2,5-furan bis(formamide m-phenylenediamine) and dicarboxylic anhydride monomer, wherein the structural formula of the 2,5-furan bis(formamide m-phenylenediamine) is as shown in the description, and the structural formula of the 2,5-furan bis(formamide p-phenylenediamine) is as shown in the description; and the structural formula of the obtained polyimide resin containing the furan ring is as shown in the description, wherein X is a residue of the dicarboxylic anhydride monomer, and n is an integer greater than 0. The glass transition temperature of the obtained polyimide resin containing the furan ring is 250-400 DEG C, and the temperature is 420-500 DEG C under the condition of 5% of thermal degradation mass loss in a nitrogen gas environment; and the obtained polyimide resin containing the furan ring has higher usage temperature and thermal stability, has excellent mechanical properties and can be applied to many high and new technical fields of aerospace, space, micro-electronics, precision machinery and the like.

Description

Technical field [0001] The invention relates to the field of polyimide and its preparation, in particular to a polyimide resin containing a furan ring and a preparation method thereof. Background technique [0002] Polyimide is the most important variety of aromatic heterocyclic polymers developed in the past half a century, and it is also a type of polymer material with the highest temperature. It has high mechanical strength, high temperature resistance, chemical stability, and creep resistance. Excellent overall performance. [0003] In recent years, with the increasing demand for renewable resources, renewable and bio-based polymers have developed rapidly. However, these bio-based polymers are mainly polymers containing fatty chains, such as polyester, polyurethane, polycarbonate, and polylactic acid. The glass transition temperature of these bio-based polyimide resins <250℃, the temperature at which the mass loss of thermal degradation in nitrogen environment is 5% <420...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08L79/08
CPCC08G73/1046C08G73/105C08G73/1057C08G73/1071C08L79/08
Inventor 方省众马凯陈国飞张亚杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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