Polybenzimidazole containing ether ketone/ether sulfone structure as well as sulfonated polymer and preparation method thereof

A technology of polybenzimidazole sulfonate and polybenzimidazole is applied in the field of polybenzimidazole containing ether ketone structure or ether sulfone structure and sulfonated polymers thereof, and can solve the problems of degradation, cross-linking side reaction, and difficulty in sulfonation degree. Accurate control and other issues to achieve the effect of improving solubility, excellent electrical properties, and improving alcohol resistance

Inactive Publication Date: 2008-07-30
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method introduces an improved type called BZIM (Bis(4-(dimensionally) Improved Chemistry for High Performance Material), which contains specific chemical structures that enhances its performance at elevated temperatures or when exposed to certain substituents such as hydrogen gas. These improvements make this material more durable than existing ones while still maintaining their desired function. It also allows for easier handling compared to current methods like PEKM due to better compatibility with different types of plastic substrates. Overall, these technical features lead to enhanced thermal and physical strength and increased functionality in various applications involving electronic devices.

Problems solved by technology

This patents describes various technical problem addressed in this patented text relating to improving thermal stability and durability of composites made up of different types of organic fibers like aramide fibers/poly(microbial), metailayered material, graphite, ceramic, metal oxides, and others that require superior physical characteristics compared to existing ones. These improvements include enhanced flexibility, corrosion resistance against environmental factors including oxygen gas, moistening agents, humidity, lightning waves, electric current, magnetic force, nuclear energy sources, solar cells, lasers, X ray tubes, gamma ray detectors, airplanes, missiles, electronic devices, and military equipment. Additionally, these applications involve use of specialty materials called polypillumene which exhibit unique optical properties due to strong absorption coefficients near infrared frequencies.

Method used

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  • Polybenzimidazole containing ether ketone/ether sulfone structure as well as sulfonated polymer and preparation method thereof
  • Polybenzimidazole containing ether ketone/ether sulfone structure as well as sulfonated polymer and preparation method thereof
  • Polybenzimidazole containing ether ketone/ether sulfone structure as well as sulfonated polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 30mL dimethyl sulfoxide (DMSO) and 15mL toluene to a three-necked flask equipped with a water separator, a condenser and a nitrogen pipe. 2 Reflux at 140°C for 3h under protection, distill off the toluene and cool down to room temperature. Weigh 0.8369g (2mmol) of 5,5'-bis(2-p-hydroxyphenyl-benzimidazole) monomer, 0.4364g (2mmol, 1 equivalent) of 4,4'-difluorobenzophenone, K 2 CO 3 Add 0.5528g (4mmol) into a three-necked flask filled with DMSO, and stir to obtain a light yellow transparent solution with a small amount of insoluble matter at the bottom. in N 2 Keep the temperature at 145°C for 8h under protection and magnetic stirring. When the temperature was adjusted to 120°C, the reaction solution turned brown and opaque. After 1 hour, add 10ml of toluene, raise the temperature to 150°C, and reflux for 2 hours. Water will precipitate in the water separator. After the toluene is evaporated, keep the temperature at 160°C for 14 hours. Cool the reaction solution...

Embodiment 2

[0058] Add 30mL dimethyl sulfoxide (DMSO) and 15mL toluene to a three-necked flask equipped with a water separator, a condenser and a nitrogen pipe. 2 Reflux at 140°C for 3h under protection, then distill off the toluene and cool down to room temperature.

[0059] Weigh 0.8689g (2mmol) of 5,5'-bis(2-p-hydroxyphenyl-benzimidazolium)-ether monomer, 0.4364g (2mmol) of 4,4'-difluorobenzophenone, K 2 CO 3 Add 0.5528g (4mmol) into a three-necked flask filled with DMSO, and stir to obtain a light yellow transparent solution with a small amount of insoluble matter at the bottom. in N 2 Under protection and magnetic stirring, keep the temperature at 260°C for 8 hours, then add 10ml of toluene, raise the temperature to 150°C, reflux for 2 hours, divide the water with the water separator, and then steam the toluene and keep the temperature at 160°C for 14 hours. Cool the reaction liquid to 80°C, pour it into deionized water under stirring, and produce a large amount of flocculent pre...

example 3

[0063] Add 30mL of dimethylformamide (DMF) and 15mL of water-carrying agent toluene into a three-neck flask equipped with a water separator, a condenser and a nitrogen pipe, and 2 Reflux at 140°C for 3h under protection, then distill off the toluene and cool down to room temperature.

[0064] Weigh 0.4344 g (1 mmol) of 5,5'-bis(2-p-hydroxyphenyl-benzimidazole)-ether monomer and 5,5'-bis(2-p-hydroxyphenyl-benzimidazole) mono Body 0.4184g (1mmol), 4,4'-difluorobenzophenone 0.4364g (2mmol), K 2 CO 3 Add 0.5528g (4mmol) into a three-necked flask filled with DMF, and stir to obtain a light yellow transparent solution with a small amount of insoluble matter at the bottom. in N 2 Under protection and magnetic stirring, keep the temperature at 135°C for 8 hours, then add 10ml of toluene, raise the temperature to 190°C, reflux for 2 hours, divide the water with a water separator, and then evaporate the toluene and keep the temperature at 140°C for 12 hours. Cool the reaction soluti...

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Abstract

The invention discloses polybenzimidazole containing an ether ketone/ether sulfone structure and a sulphonated polymer and a preparation method thereof. The chain structure of a polybenzimidazole polymer containing the ether ketone/ether sulfone structure also has the structure of ether ketone or ether ether ketone or ether sulfone and imidazole; besides the structure of ether ketone or ether ether ketone, the chain structure of the sulphonated polymer of the polybenzimidazole containing ether ketone/ether sulfone structure also has the structure of sulfonic group and imidazole. The preparation method adopts the steps that a bisphenol-bisbenzimidazole monomer and a difluoro monomer or a fluoride bearing monomer are used as the raw material, anhydrous sodium carbonate or anhydrous potassium carbonate is used as the catalyst, nucleophilic condensation polymerization reaction is performed in an aprotic polar solvent, and after the reaction liquid is post-treated, the polybenzimidazole polymer of the sulphonated polymer containing ether ketone/ether sulfone structure is obtained. The polymer obtained through the invention has good oxidation resistance, thermostability, acidproof and alkali proof stability, and alcohol inhibition performance, and the synthetic method is simple, thereby the polybenzimidazole has broad application prospect.

Description

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Claims

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Application Information

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Owner ZHEJIANG UNIV OF TECH
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