Method for producing polybenzimidazole crosslinked membrane with epoxy compound

A technology of polybenzimidazole and epoxy compounds, which is applied in the field of epoxy compound cross-linked films, can solve the problems of easy volatilization and loss of cross-linking agents, difficulty in precise control of cross-linking density, etc., and achieve excellent mechanical properties, simple method and fast reaction The effect of mild conditions
CN101220163AInactive Publication Date: 2008-07-16SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2008-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a polybenzimidazole crosslinking membrane by using epoxy compounds, which takes amino dibasic acid and aromatic tetraamine as monomer raw material and polyphosphoric acid as reaction medium and reaction is carried out for 5-30 hours at 150-220 DEG C under the nitrogen protection condition so as to obtain homopolymer containing amino polybenzimidazole, and takes the amino dibasic acid, nonaminonic dibasic acid and the aromatic tetraamine as the monomer raw materials to prepare copolymer containing amino polyphosphoric under the same conditions. The prepared homopolymer and the copolymer of the polybenzimidazole have good dissolvability in solvents of dimethyl sulphoxide, N, N- dimethylacetamide, phosphate, vitriol and methane-sulforic acid, etc. The bifunctionality or polyfunctional epoxy compounds are used as cross linking agent. The polybenzimidazole crosslinking membrane that has good property can be prepared through crosslinking reaction of the amido contained in the polybenzimidazole and epoxy functional groups contained in the bifunctionality or polyfunctional epoxy compounds.
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Description

technical field

[0001] The invention relates to a method for preparing a polybenzimidazole cross-linked film with an epoxy compound. A high-performance epoxy compound cross-linked film containing amino-soluble polybenzimidazole is prepared by using a di- or multi-functional epoxy compound. It belongs to the technical field of chemical materials. Background technique

[0002] The polybenzimidazole with full aromatic structure is a kind of high-performance material, which has extremely high heat resistance, excellent mechanical properties, excellent chemical stability, good dielectric properties and spinning and film-forming properties. It has been widely used in aerospace, microelectronics and other fields. In the mid-1990s, it was discovered that polybenzimidazole doped with phosphoric acid has potential application prospects in the field of high-temperature proton exchange membrane fuel cells. Therefore, this type of material has received great attention in recent years. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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