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Method for preparing aromatic polybenzimidazole resin film

A polybenzimidazole, resin film technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation and other directions, can solve problems that have not been reported in literature or patent reports, and achieve good solubility and film-forming performance, operation Convenient, high molecular weight effect

Inactive Publication Date: 2009-06-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The preparation method of the aromatic polybenzimidazole film disclosed by the present invention has not yet been published in the literature or patent reports

Method used

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  • Method for preparing aromatic polybenzimidazole resin film
  • Method for preparing aromatic polybenzimidazole resin film
  • Method for preparing aromatic polybenzimidazole resin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 1 In the structural formula, when y=0, the binary polycondensate of 3,3',4,4'-tetraaminodiphenyl ether and terephthalic acid will be obtained, and the operation is as follows: 40.0g polyphosphoric acid (80%) Add 10.0g of phosphorus pentoxide into a 250mL three-necked round-bottom flask equipped with a stirrer and an airway tube, and deoxidize with stirring at 90°C under the protection of nitrogen until the white powder of phosphorus pentoxide is completely dissolved into a transparent and clear solution , cooled to room temperature under nitrogen protection. Add 3,3',4,4'-tetraaminodiphenyl ether (1.0000g, 4.3mmol) and terephthalic acid (0.7222g, 4.3mmol), pass nitrogen gas at room temperature for about 15min, then stir at 90°C for reaction 3 hours, 130°C for 3 hours, and 200°C for 5 hours. After the reaction, a dark red rubber elastomer-like polymer was obtained. Pour it into water after cooling, crush it into powder in a resin grinder, soak and rinse the resu...

Embodiment 2

[0044] figure 1In the structural formula, when x=0, the binary polycondensate of 3,3',4,4'-tetraaminodiphenyl ether and isophthalic acid is operated as follows: 40.0g PPA (80%) and 10.0g P 2 o 5 Add it into a 100mL three-necked round-bottomed flask equipped with a stirrer and an airway tube, and stir it at 140°C for deoxidation under the protection of nitrogen until the white powder of phosphorus pentoxide is completely dissolved into a transparent and clear solution (P 2 o 5 , 84%), cooled to room temperature under nitrogen protection. Add 3,3',4,4'-tetraaminodiphenyl ether (1.0000g, 4.3mmol), isophthalic acid (0.7222g, 4.3mmol), and pass N at room temperature 2 After about 15 minutes, stir and react at 90°C for 3 hours, 130°C for 3 hours, and 200°C for 10 hours. After the reaction, a dark red rubber elastomer-like polymer is obtained. Pour it into water after cooling, crush it into powder in a resin grinder, soak and rinse the resulting product in distilled water repeat...

Embodiment 3

[0047] figure 1 In the structural formula, when x=y, the terpolymer of 3,3',4,4'-tetraaminodiphenyl ether, isophthalic acid (1PA) and terephthalic acid (TPA) is polymerized, and the operation is as follows: 40.0g PPA (80%) and 10.0g P 2 o 5 Add it into a 100mL three-necked round-bottomed flask equipped with a stirrer and an air tube, and deoxidize with stirring at 140°C under the protection of nitrogen until P 2 o 5 The white powder completely dissolves into a transparent and clear solution (P 2 o 5 , 84%), cooled to room temperature under nitrogen protection. Add 3,3',4,4'-tetraaminodiphenyl ether (1.0000g, 4.30mmol), TPA (0.3611g, 2.15mmol), IPA (0.3611g, 2.15mmol) in equal amounts, and pass through N at room temperature 2 After about 15 minutes, stir and react at 90°C for 3 hours, 130°C for 3 hours, 160°C for 3 hours, and 200°C for 10 hours. After the reaction, a dark red rubber elastomer-like polymer is obtained. Pour it into water after cooling, crush it into powde...

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Abstract

The invention relates to a preparation method for aromatic series polybenzimidazole resin film, comprising: (1) under function of polyphosphoric acid / phosphorus pentoxide system, condensation polymerization reaction is carried out to aromatic series amine and aromatic series dicarboxylic acids mixed according to mol ratio of 1:1 in nitrogen atmosphere; (2) after cooling, polymer is poured into water and broken down into powder in a resin pulper and washed over and over again by distilled water and soaked for 48 hours in NaHCO3 solution and washed till pH value shows neutral and drawn and filtered for drying in vacuum; (3) the polymer dried is dissolved in even solution prepared by organic solvent with mass percent of 5 percent, and then is dried at temperature of 130 DEG C for 12 hours, and is soaked in hot water for boiling and striping, and is dried in vacuum at temperature of 100 DEG C for 5 hours and then is obtained. The polybenzimidazole prepared by the invention has the advantages of big molecule weight, stable thermal stability, fine solubility and film forming performance, etc. The preparation has simple technology, low cost, convenient operation and can be finished in common equipments through preparation procedure.

Description

technical field [0001] The invention belongs to the field of preparation of polymer resin films, in particular to a preparation method of aromatic polybenzimidazole resin films. Background technique [0002] Polybenzimidazole is a kind of polymer with excellent comprehensive properties. It has excellent heat resistance, low temperature resistance, mechanical properties and flame retardancy. At the same time, it also has excellent wear resistance, radiation resistance, acid and alkali resistance, etc. performance. Therefore, it is widely used in aviation, aerospace, optics, microelectronics and other high-tech fields. From the high-temperature resistant materials of spacecraft, satellites or space vehicles, to the composite materials of advanced structures in automobiles, electromechanical, etc., as well as the high-temperature resistant adhesives, and the proton exchange membranes of fuel cells, etc., there are good application prospects; therefore From cutting-edge techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L79/04C08G73/18B01D71/62H01M8/02H01M8/10H01M2/16H01M8/1081H01M50/403H01M50/411
CPCY02E60/521Y02E60/12Y02E60/50
Inventor 虞鑫海徐俊徐永芬
Owner DONGHUA UNIV
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