Preparation method of high-transparency high-temperature-resistant fluorine-containing polyimide resin

A fluorine-containing polyimide and high temperature resistant technology, applied in the field of preparation of highly transparent and high temperature resistant fluorine-containing polyimide resin, can solve problems such as application limitation and high cost of 6FDA, and achieve improved mechanical properties and excellent optical properties. , good solubility

Inactive Publication Date: 2017-03-15
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the polyimide synthesized by 6FDA has outstanding performance and many potential application values, the application of this kind of polymer is greatly restricted due to the high cost of 6FDA.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high-transparency high-temperature-resistant fluorine-containing polyimide resin
  • Preparation method of high-transparency high-temperature-resistant fluorine-containing polyimide resin
  • Preparation method of high-transparency high-temperature-resistant fluorine-containing polyimide resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] A 3'-(trifluoromethyl)-[1,1'-biphenyl]-2,5-diol and 3'-methyl-[1,1'-biphenyl]-2, 5-diol prepares the method for highly transparent and high-temperature-resistant polyimide through a series of chemical reactions, and its preparation steps are as follows:

[0027] (1) Add 3'-(trifluoromethyl)-[1,1'-biphenyl]-2,5-diol (dry) (3'-methyl-[1 , 1'-diphenyl]-2,5-diol) and 2-chloro-5-nitro-trifluorotoluene, and adding solvent DMF and water-carrying drug toluene (80mL), using potassium carbonate as a catalyst at 135 React at -140°C for 4 hours, then increase the temperature to 150°C for 4 hours. During the reaction process, nitrogen gas was continuously fed and stirred. Discharging in a mixture of ice and water, washing the obtained powder with water until the solution is colorless, washing with methanol for 2-3 times, and drying in a vacuum oven.

[0028] (2) put the first reaction product 2,5-bis(4-nitro-2-(trifluoromethyl)phenoxy)-3-(trifluoromethyl)-1,1'-biphenyl Into the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
modulusaaaaaaaaaa
wavelengthaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of polyimide resin, and in particular to a preparation method of high-transparency high-temperature-resistant fluorine-containing polyimide resin. According to the prepared hyperbranched fluoro polyimide materials, introduction of a linear part can increase chain entanglement of a polymer, besides, introduction of a side chain part can increase the solubility of the polymer and further reduce the double refraction value of the polymer, and a rib type waveguide strip is obtained with the crosslinking type hyperbranched polymer by ion etching. By means of the two-step chemical chain buckling method, a series of fluorine-containing hyperbranched polyimide materials with different linear lengths are successfully synthesized. The prepared hyperbranched polyimide has good thermostability and good solubility in an organic solvent. The mechanical property, thermal property and optical property of the materials have good linear colligative relationship with the content of triamine monomers in the materials. The rib type waveguide strip is successfully prepared and has good optical properties, and the mechanical properties of the rib type waveguide strip are improved.

Description

technical field [0001] The invention relates to a preparation method of a highly transparent and high temperature resistant fluorine-containing polyimide resin, in particular to a preparation method of a highly transparent and high temperature resistant fluorine-containing polyimide resin. Background technique [0002] Trifluoromethyl-containing polyimide was reported as early as 1967, and it is also the most studied polymer among fluorine-containing polyimides. The most common dianhydride used in fluorine-containing polyimide is 6FDA, which is synthesized by the reaction of o-xylene and hexafluoroacetone according to the formula Figure 1.10. [0003] . [0004] Although the polyimide synthesized by 6FDA has outstanding performance and many potential application values, the application of this kind of polymer is greatly restricted due to the high cost of 6FDA. Shown is its polymer synthesized with APB as image 3 shown. [0005] Belonging to this category of dianhydride...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10
CPCC08G73/1003C08G73/1039C08G73/1046C08G73/1075
Inventor 刘禹王浩杰翁秀燕余征宏
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap