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Furan ring-containing crosslinked polyimide resin and preparation method thereof

A technology of polyimide resin and polyimide, which is applied in the field of cross-linked polyimide resin and its preparation, can solve the problems that need to be further improved, achieve glass transition temperature and improve mechanical properties, solvent resistance The effect of performance improvement

Active Publication Date: 2018-11-06
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Recently, with the development of aromatic bio-based monomer 5-hydroxymethylfurfural, 2,5-furandicarboxylic acid derived from this is increasingly used to prepare new bio-based polymers, such as patent application No. 2017113804334 using 2, 5-furandicarboxylic acid to prepare corresponding polyimides, among which 2,5-furandicarboxylic acid-based polyimides have both high service temperature and thermal stability, and can be used in aerospace, space, microelectronics and precision machinery And many other high-tech fields, but its thermal and mechanical properties still need to be further improved

Method used

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  • Furan ring-containing crosslinked polyimide resin and preparation method thereof
  • Furan ring-containing crosslinked polyimide resin and preparation method thereof
  • Furan ring-containing crosslinked polyimide resin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this embodiment, the polyimide resin containing furan ring has the following structural formula:

[0037]

[0038] The specific preparation method is: the obtained 1.5g polyimide powder containing furan ring and 0.1405g diphenylmethane bismaleimide are configured with N,N-dimethylacetamide so that the weight percentage concentration is 10%. The solution is uniformly coated on a clean glass plate by casting method, the thickness of the solution coating film is 0.5mm, the glass plate is placed in a drying oven at 80°C overnight, and then the temperature is raised according to the following procedure: 100°C , 1 hour; 150°C, 1 hour; 250°C, 1 hour. After the temperature drops to room temperature, take out the glass plate, place it in warm water to remove the film, and then place the film in a drying oven at 100°C to dry and remove water to obtain a cross-linked polyimide film containing furan rings.

[0039] The test data are as follows: the glass transition temperatu...

Embodiment 2

[0042] In this embodiment, the polyimide resin material containing furan ring has the following structural formula:

[0043]

[0044] The specific preparation method is: the obtained 1.5g polyimide powder containing furan ring and 0.1405g diphenylmethane bismaleimide are configured with N,N-dimethylacetamide so that the weight percentage concentration is 10%. The solution is uniformly coated on a clean glass plate by casting method, the thickness of the solution coating film is 0.5mm, the glass plate is placed in a drying oven at 80°C overnight, and then the temperature is raised according to the following procedure: 100°C , 1 hour; 150°C, 1 hour; 250°C, 1 hour. After the temperature drops to room temperature, take out the glass plate, place it in warm water to remove the film, and then place the film in a drying oven at 100°C to dry and remove water to obtain a cross-linked polyimide film containing furan rings.

[0045] The detection data are as follows: the glass transi...

Embodiment 3

[0047] In this embodiment, the polyimide resin containing furan ring has the following structural formula:

[0048]

[0049] The specific preparation method is:

[0050](1) Synthesis of N,N'-bis(4-amino-2-(trifluoromethyl)phenyl)furan-2,5-dicarboxamide: add triethylamine (12.7452g , 126.0mmol) and 4-nitro-2-(trifluoromethyl)aniline (25.9723g, 126.0mmol), stirred at room temperature, completely dissolved. Then, under nitrogen atmosphere, a solution of 2,5-furandicarbonyl chloride (11.5784 g, 60.0 mmol) in N,N-dimethylacetamide (75 mL) was added. After stirring at 100° C. for 24 hours, the reaction solution was dropped into water to precipitate a precipitate. The precipitate was collected by filtration, washed with water, and dried under vacuum at 95°C to obtain 21.1047g of bisnitro compound with a yield of 66%. Under nitrogen protection, dinitro compound (21.1002 g) was dissolved in DMAc (100 mL), and Pd / C (0.5780 g) was added as a catalyst. After heating up to 100°C, hy...

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Abstract

The invention discloses furan ring-containing crosslinked polyimide resin and a preparation method thereof. The crosslinked polyimide resin is obtained through thermal crosslinking of furan ring-containing polyimide and bismaleimide. The furan ring-containing crosslinked polyimide resin has significantly improved glass transition temperature and mechanical properties, and has a wide application prospect in many high-tech technical fields of aerospace, space, microelectronics and precision machinery.

Description

technical field [0001] The invention relates to the field of polyimide and its preparation, in particular to a furan ring-containing cross-linked polyimide resin and a preparation method thereof. Background technique [0002] Since the 1950s, with the US-Soviet arms race and the development of the electronics industry, the demand for high-performance materials in the manufacturing industry has become increasingly urgent. Driven by this situation, polymer materials are also developing towards special engineering plastics with high temperature resistance and high strength. Among them, polyimide is an important class of high-performance polymers with high mechanical strength, durability High temperature, chemical stability, creep resistance and other excellent comprehensive properties. [0003] In recent years, due to the need for sustainable development, the development of bio-based polymers has attracted more and more attention. Recently, with the development of aromatic bi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K5/3415C08J5/18C08J3/24
CPCC08J3/24C08J5/18C08J2379/08C08K5/3415
Inventor 方省众马凯陈国飞张安将
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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