Preparation method of high-temperature proton conductor composite material

A technology of proton conductors and composite materials, which is applied in the field of preparation of high-temperature proton conductor composite materials, can solve various problems, and achieve the effects of improving mechanical properties, good application prospects, and wide use
CN101775210AInactive Publication Date: 2010-07-14SHANDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF TECH
Publication Date
2010-07-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a high-temperature proton conductor composite material, which is characterized in that sulfonated triphenylphosphine salt is added into polybenzimidazole after the polybenzimidazole is dissolved in a solvent to obtain membrane casting solution, the membrane casting solution is poured onto a glass membrane casting plate to be dried for 24 hours at the temperature of 60 DEG C and then to be dried for 4 hours at the temperature of 100 DEG C, the glass membrane casting solution is steeped into a deionized water after being naturally cooled to the room temperature, then the membrane is torn off, and a polybenzimidazole-type high polymer material doped with sulfonated triphenylphosphine salt high-temperature proton conductor composite material is obtained. The sulfonated triphenylphosphine salt is used as the doping material, so the PBI has good proton conduction performance, and the sulfonated triphenylphosphine salt not only can make the PBI be well blended with the high polymer material, but also can improve the mechanical performance of the material. The composite material can be used at the temperature of room temperature to 180 DEG C, and the electric conductivity of the composite material is within 0.08 to 0.2 S / cm. The composite material can be applicable to the high-temperature proton exchange membrane material and other proton conduction material of the fuel cell, and also can be applicable to the fields such as the electrolysis, the sensor, the electro-luminescent material and the like.
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Description

technical field

[0001] The invention relates to a preparation method of a high-temperature proton conductor composite material. Background technique

[0002] The glass transition temperature of polybenzimidazole (PBI) is 480°C, there is basically no weight loss below 500°C in nitrogen, and the highest decomposition temperature exceeds 600°C. Excellent low temperature performance, not brittle at -196°C. The tensile strength of the PBI film is 110MPa, the tensile modulus is 2.65GPa, and the elongation is 11%. PBI is nonflammable in air and burns slowly in oxygen. It can resist strong acid, strong alkali and organic solvent, and it is the only material with high temperature resistance, low temperature resistance and chemical corrosion resistance.

[0003] PBI can be used in various film materials, adhesives, insulating paint, foam plastics and fibers and other fields. It has a very wide range of applications in aerospace, ablation-resistant heat shielding materials, drag pa...

Claims

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