Fluorine-contained polyimide optical waveguide material and method for producing the same

A polyimide light and waveguide technology, which is applied in the directions of optical waveguide, light guide, optics, etc., can solve the problems that do not involve optical loss, refractive index, film forming and mechanical properties, and does not use optical waveguide materials. Good mechanical properties, good solubility and easy processing

Inactive Publication Date: 2008-08-20
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of fluorine-containing polyimide materials involved in these patents is mainly based on two-monomer polymers, and rarely involves the preparation of three-monomer fluorine-containing polyimides, let alone for the preparation of low-loss optical waveguide materials, and Little to no research on optical loss, refractive index, film formation, and mechanical properties

Method used

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  • Fluorine-contained polyimide optical waveguide material and method for producing the same
  • Fluorine-contained polyimide optical waveguide material and method for producing the same
  • Fluorine-contained polyimide optical waveguide material and method for producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 5,5'-(hexafluoroisopropylidene)-bis-(2-aminophenol) (6FHP) (3mmol), 4,4'-hexafluoroisopropylidene-phthalic anhydride (6FDA) (1.5mmol) and bisphenol A dianhydride (1.5mmol) were dissolved in 5mL DMF, then under nitrogen atmosphere, the 6FHP solution was mixed with the solution of 6FDA and bisphenol A dianhydride, reacted at room temperature for 24h, added 8mL magnesium sulfate and dried xylene, heated up to 160°C, and continued to react for 3-10 hours, and the reaction water and xylene were distilled out azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate, which was filtered to obtain a crude fluorine-containing polyimide. Dissolve the crude fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add the THF solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipit...

Embodiment 2

[0032] Dissolve 6FDA (3mmol), 6FHP (1.5mmol) and bisphenol A diamine (1.5mmol) in 5mL DMF respectively, then mix 6FDA solution with 6FHP and bisphenol A diamine solution under nitrogen atmosphere, and react at room temperature for 24h , add 8 mL of magnesium sulfate dried xylene, raise the temperature to 160°C, continue the reaction for 3-10 hours, and distill off the reaction water and xylene azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate and filter to obtain a crude fluorine-containing polyimide. Dissolve the crude product of fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add this tetrahydrofuran solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate precipitates. Reflux the precipitate with methanol in the extractor to purify the precipitate, evaporate the extra...

Embodiment 3

[0035] 6FHP (3 mmol), 6FDA (1.5 mmol) and fluorine-containing bisphenol A dianhydride (1.5 mmol) were dissolved in 5 mL of DMF, respectively. Then, under a nitrogen atmosphere, mix the 6FHP solution with the solution of 6FDA and fluorine-containing bisphenol A dianhydride, react at room temperature for 24 hours, add 8 mL of magnesium sulfate dried xylene, raise the temperature to 160°C, and continue the reaction for 3 to 10 hours. Water and xylene were distilled off azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate and filter to obtain a crude fluorine-containing polyimide. Dissolve the crude product of fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add this tetrahydrofuran solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate precipitates. Reflux the precipitate wi...

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Abstract

The invention provides a fluorine-containing polyimide optical waveguide material and the preparing method thereof relating to the integrating polymer material preparing method in optical device, which can be applied in waveguide optics device, the material is obtained from condensation and copolymerization of three monomers, that is the fluorine-containing polyimide is condensed and copolymerized from two diamine monomers and one dianlydride monomer or from two diamine monomers and one dianlydride monomer, after purification, the fluorine-containing polyimide n-methyl-2-pyrrolidone solution is obtained, and is then dropped on center of clean substrate for spin coating to form film, and desiccation and curing. The glass transition temperature of the material is above 200 DEG C, in the field of optical communication on 1550nm the optical loss is less than 0.6dB/cm, the refractive index on 1550nm is 1.5-1.6.

Description

technical field [0001] The invention relates to a fluorine-containing polyimide optical waveguide material and a preparation method thereof, which belongs to the preparation category of polymer materials in integrated optical devices and can be applied to waveguide optical devices. Background technique [0002] In the field of optical communication, polymer optical materials have been extensively studied due to their excellent performance. At present, the applied optical waveguide materials are mainly concentrated on inorganic materials, but the birefringence effect of inorganic materials is large, and they are formed on inorganic material substrates. High-quality thick-film waveguides are difficult and require complex equipment. Polymer materials have the characteristics of many varieties, adjustable structures, various preparation methods, good thermal stability, and low optical loss in the two near-infrared transmission windows (wavelength 1.33 μm and 1.55 μm). The waveg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04G02B6/10G02B6/13G02B6/136
Inventor 周钰明刘蓉何曼崔一平张彤
Owner SOUTHEAST UNIV
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