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Polyimides and preparation method thereof

A technology of polyimide and aminoethane, which is applied in the field of polymer materials, can solve problems such as not being able to meet the needs of use, and achieve the effects of adjustable molecular void size, good elasticity, and elastic stretch resistance

Inactive Publication Date: 2017-05-31
NANJING XINYUE MATERIAL SCI & TECH
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  • Abstract
  • 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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  • Polyimides and preparation method thereof
  • Polyimides and preparation method thereof
  • Polyimides and preparation method thereof

Examples

Experimental program
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Embodiment

[0023] For the tris(2-aminoethane)phosphine oxide monomer in this example, refer to the literature: Kasparek, Frantisek et al; Nickel(II), copper(II), zinc(II), cadmium(II) and mercury(II) complexes of tris(2-aminoethyl)phosphine oxide; Journal of Coordination Chemistry (1998), 44(1-2), 61-70.

[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, the three (2-aminoethane) phosphine oxide trihydrochloride monomer shown in 1.156g, 4mmol formula 2, and 1.308g, 6mmol of pyromellitic dianhydride was added into a 100ml three-necked flask, followed by adding 15ml of N,N-dimethylacetamide to dissolve the reaction monomer, and adding 15ml of triethylamine for neutralization. After the monomer is dissolved, equip ...

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Abstract

The invention discloses polyimides and a preparation method thereof. The polyimides have a closed loop structure which is polymerized by repeating units as shown in a formula 1, and Ar in the formula 1 represents tetracarboxyl residues and derivatives thereof. The polyimides have the advantages of larger specific surface area, adjustable molecular gap dimension, and good elasticity and stretching resistance with liquid crystal properties. The triamine is a non-aromatic structure, the non-aromatic structure breaks the long conjugated structure of the original product, in order to obtain a transparent product, and the material also can be applied to a flexible display substrate material.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08L79/08
CPCC08G73/1057C08G73/1082C08L79/08C08L2201/10
Inventor 刘屹东闵永刚闵功勋杨文斌宋建军
Owner NANJING XINYUE MATERIAL SCI & TECH
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