Polyimide polymer containing selenium and preparation method and application thereof

A technology of selenium polyimide and polyimide, which is applied in the field of selenium-containing polyimide polymer materials and its preparation, can solve the problem of increased refractive index of polyimide materials, low Abbe number, limited applications, etc. question

Active Publication Date: 2017-04-19
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the refractive index of the obtained polyimide material is limited, and its Abbe number is also low, which limits the application of this type of material to a certain extent.

Method used

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  • Polyimide polymer containing selenium and preparation method and application thereof
  • Polyimide polymer containing selenium and preparation method and application thereof
  • Polyimide polymer containing selenium and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The preparation of selenium-containing polyimide polymer film comprises the following steps:

[0061] (1) Synthesis of selenoether diamine monomer 4,4'-diaminodiphenylselenide (BASP): first pass argon gas into a 50mL three-necked flask for two hours to remove the air, and then p-iodoaniline (10mmol), CuI (1mmol), K 2 CO 3 (10mmol), DMSO (20mL) were added in the three-necked flask, stirred to dissolve p-iodoaniline, then dry selenium powder (6mmol) was added to the reaction system, and the reaction temperature was preset to be 120°C; the reaction device was protected from light, and The argon gas was always passed through, and the reaction process was tracked by TLC. After about 12 hours, the reaction of p-iodoaniline could be basically completed. After cooling naturally, filter with suction in the dark, wash with water and extract with ethyl acetate (40mL×3), dry the organic phase with anhydrous sodium sulfate, filter with suction again, and separate by silica gel col...

Embodiment 2

[0069] The steps of this embodiment are basically the same as in Example 1, and the difference is that the dianhydride monomer is 4,4'-oxydiphthalic anhydride (ODPA) in the step (2) to obtain selenium-containing polyamic acid PAA2; In (3), the selenium-containing polyamic acid PAA2 is thermally imidized to obtain the selenium-containing polyimide film PI2 (BASP / ODPA). attached Figure 6 For the infrared spectrogram of the selenium-containing polyamic acid PAA2 that this step obtains, from Figure 6 It can be seen in: at 3450cm -1 There is an obvious and broad absorption peak, which is attributed to the hydroxyl (-OH) absorption in the carboxyl (-COOH) contained in PAA; at 1660cm -1 , 1532cm-1 , 1260cm -1 The three absorptions are attributed to the characteristic absorption of the amide structure (-CONH-); Figure 7 The infrared spectrogram of the selenium-containing polyimide thin film PI2(BASP / ODPA) that this step obtains, from Figure 7 It can be seen in: in the origina...

Embodiment 3

[0072] The preparation of selenium-free polyimide polymer film comprises the following steps:

[0073] (1) Preparation of polyamic acid: Weigh 4,4'-diaminodiphenyl ether (ODA) (0.2640g, 1mmol) and dissolve it in 3mL of anhydrous DMF, stir under argon atmosphere until ODA is completely dissolved, continue Argon was passed for half an hour, then the dianhydride monomer pyromellitic anhydride (PMDA) (0.2189g, 1mmol) was added, the reaction temperature was maintained at 30°C, and polyamic acid PAA3 was obtained after stirring for 3 hours, and the feeding ratio was controlled so that it The solid content is 15%.

[0074] (2) Preparation of polyimide (PI) film: quickly smear polyamic acid PAA3 on a glass plate for thermal imidization, and go through the following heating program: heating at 70°C for 1h, heating at 100°C for 1h, heating at 150°C for 1h , heated at 200°C for 1.5h, at 250°C for 1.5h, and at 300°C for 0.5h. After cooling down to room temperature naturally, the glass pl...

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Abstract

The invention provides a high-refractive-index polyimide polymer containing selenium and a preparation method and application of the high-refractive-index polyimide polymer containing the selenium. The preparation method and application of the high-refractive-index polyimide polymer containing the selenium comprises the steps that (1) selenide diamine monomer and dianhydride monomer are polymerized, so that polyamide acid containing the selenium is obtained; and (2) thermal imidization is conducted on the polyamide acid containing selenium, obtained in the step (1), so that the polyimide polymer containing the selenium is obtained. According to the high-refractive-index polyimide polymer containing the selenium and the preparation method and application of the high-refractive-index polyimide polymer containing the selenium, the refractive index can be improved because the selenium element is introduced to the polyimide, the refractive index is 1.7-1.82, the defect that an existing polyimide polymer material is not high in refractive index is greatly relieved, and therefore the application of the polyimide polymer to the optical field is extended.

Description

technical field [0001] The invention relates to a polymer material, in particular to a selenium-containing polyimide polymer material and its preparation method and application. Background technique [0002] High refractive index materials have important applications in the fields of optical materials, lenses, and displays. The refractive index of common materials is relatively low, between 1.3 and 1.70. Generally, materials with a refractive index value greater than 1.70 are called high refractive index materials. High refractive index materials mainly include polymer-based materials and inorganic hybrid materials, while polymer-based materials are mainly polymer resin materials and polymer-nanoparticle blend materials, and inorganic hybrid materials are mainly ordinary inorganic glass materials etc. Polymer-based high-refractive-index materials are lighter than inorganic hybrid materials, have better fracture resistance and higher refractive index, etc. In recent years, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10C08J5/18G02B1/04C08L79/08
CPCC08G73/1057C08G73/1071C08J5/18C08J2379/08G02B1/04
Inventor 朱健李琪龙潘向强朱秀林
Owner SUZHOU UNIV
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