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Polyimide and preparation method thereof

A polyimide, aminoethane technology, applied in the field of polymer materials, can solve problems such as the inability to meet the needs of use, and achieve the effects of adjustable molecular void size, good elasticity, and large specific surface area

Inactive Publication Date: 2017-06-20
NANJING XINYUE MATERIAL SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the development of science and technology, more refined requirements have been put forward for the performance of polyimide; the existing polyimide can no longer meet the needs of use

Method used

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  • Polyimide and preparation method thereof
  • Polyimide and preparation method thereof
  • Polyimide and preparation method thereof

Examples

Experimental program
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Embodiment

[0023] For the tris(2-aminoethyl)amine(tren)and Tris(3-aminopropyl)amine(trpn):Synthesis and Complexation Studies with Group 4 Metals, Organometallics (2015), 34(6), 1118-1128.

[0024] The synthesis of polyimide in this example is divided into two steps: the first step is to generate a polyimide precursor; the second step is to perform a ring-closure reaction on the generated polyimide precursor at high temperature.

[0025] The first step, the synthesis of polyimide precursor: under room temperature condition, the three (2-aminoethane) phosphine (hydrochloride) monomer shown in the formula 2 of 1.092g, 4mmol, and 1.308g, 6 mmol of pyromellitic dianhydride was added into a 100 ml three-necked flask, and then 15 ml of N,N-dimethylacetamide was added to dissolve the reaction monomer. It is also necessary to add 15ml of triethylamine to neutralize. After the monomer is dissolved, equip the three-necked flask with mechanical stirring, condenser and nitrogen. Continue to stir an...

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Abstract

The application discloses a polyimide and a preparation method thereof. The polyimide of the present application is a ring-closed structure formed by polymerizing repeating units shown in Formula 1, where Ar is a tetracarboxyl residue and its derivatives. The polyimide of the present application has larger specific surface area, adjustable molecular void size, good elasticity and tensile resistance, and can have liquid crystal properties. Because the triamine has a non-aromatic structure, the non-aromatic structure breaks the long conjugated structure of the original product, and a transparent product can be obtained. This material can also be applied to flexible display base materials.

Description

technical field [0001] The application relates to the field of polymer materials, in particular to a novel polyimide and a preparation method thereof. Background technique [0002] Polyimide refers to a class of polymers containing imide rings (-CO-NH-CO-) in the main chain. Since the invention of aromatic polyimide compounds by Dupont Company in the United States, there have been many different types of polyimides. Due to the unique advantages of polyimide, such as excellent mechanical properties, electrical properties and thermal properties, it is more and more widely used in electronics and special materials. However, with the development of science and technology, more refined requirements have been put forward for the performance of polyimide; the existing polyimide can no longer meet the use requirements. Contents of the invention [0003] The purpose of this application is to provide a kind of polyimide of brand-new structure, and preparation method thereof. [00...

Claims

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Application Information

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IPC IPC(8): C08G73/10
CPCC08G73/1082C08G73/1057
Inventor 刘屹东闵永刚杨文斌闵功勋宋建军
Owner NANJING XINYUE MATERIAL SCI & TECH
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