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A color-adjustable shape memory polyimide and preparation method thereof

A polyimide and adjustable technology, which is applied in the field of shape memory polyimide and its preparation, can solve the problems that shape memory polyimide color is difficult to adjust, color polyimide has no shape memory effect, etc., and achieves Excellent shape memory effect, widening sources, and cost reduction effects

Inactive Publication Date: 2020-07-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing color polyimide has no shape memory effect, and the color of shape memory polyimide is difficult to adjust, and to provide a color adjustable shape memory polyimide and its preparation method

Method used

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  • A color-adjustable shape memory polyimide and preparation method thereof
  • A color-adjustable shape memory polyimide and preparation method thereof
  • A color-adjustable shape memory polyimide and preparation method thereof

Examples

Experimental program
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specific Embodiment approach 1

[0035] Embodiment 1: A color-adjustable shape-memory polyimide and its preparation method in this embodiment, which is a shape-memory polyimide compound whose color can be changed by changing the content of tetraethyl silicate (TEOS) Material; it is prepared from tetraethyl silicate and shape memory polyimide at a weight ratio of 5:100 to 12:100;

[0036] The shape memory polyimide is prepared from diamine and dianhydride; the diamine is 2,2'-bis(trifluoromethyl)-4,4'-diaminophenyl ether; the The dianhydride mentioned is 3,3',4,4'-diphenyl ether tetracarboxylic dianhydride.

specific Embodiment approach 2

[0037] Embodiment 2: This embodiment differs from Embodiment 1 in that the weight ratio of tetraethyl silicate to shape-memory polyimide is 8:100˜12:100. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment is different from Embodiment 1 in that the ratio of dianhydride:diamine is 0.92:1˜1.08:1. Others are the same as in the first embodiment.

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Abstract

The invention discloses color adjustable shape memory polyimide and a preparation method thereof, and relates to a preparation method of a color adjustable shape memory polyimide composite material. The color adjustable shape memory polyimide has the purpose of solving the problems that the existing color polyimide does not have a shape memory effect and the color of shape memory polyimide is difficult to adjust. The method comprises the following steps: firstly, preparing a diamine solution; secondly, preparing polyamide acid; thirdly, preparing a polyamide acid\TEOS solution; fourthly, performing thermal imidization, so as to prepare the color adjustable shape memory polyimide composite material. The formed color adjustable shape memory polyimide composite material has wide application prospects in the fields of intelligent light filter membranes, foldable circuit boards and intelligent color packaging.

Description

technical field [0001] The invention relates to a color-adjustable shape-memory polyimide and a preparation method thereof. Background technique [0002] Color polyimide can be used as color filter film, color insulating film, color heat-resistant label, etc., and has important application prospects in the fields of electronic products, flexible printed circuit boards, soft plastic packaging films, and heat-resistant materials. Shape memory polyimide organically combines the excellent properties of polyimide and shape memory effect, and has important application prospects in the fields of space deployable structures, satellite ailerons, and aerospace propulsion. Although there have been reports on color polyimide and shape memory polyimide respectively, there is no report on color-tunable shape memory polyimide. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the existing color polyimide has no shape memory effect, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08K5/5415C08J5/18
CPCC08J5/18C08J2379/08C08K5/5415
Inventor 孔德艳张紫岩肖鑫礼
Owner HARBIN INST OF TECH
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