Production method for 2 or multi-halohydrocarbon crosslinked polybenzimidazole crosslinked membrane

A technology of polybenzimidazole and aminopolybenzimidazole, which is applied in the field of chemical materials, can solve the problems of easy volatilization loss of crosslinking agent and difficulty in precise control of crosslinking density, and achieve excellent mechanical properties, simple method and mild reaction conditions Effect
CN101220162AInactive Publication Date: 2008-07-16SHANGHAI JIAO TONG UNIV
2 Cites 43 Cited by

Patent Information

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

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a preparation method of a polybenzimidazole crosslinking membrane that is crosslinked with bihalohydrocarbon or polyhalohydrocarbon, 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. Both the structures of the homopolymer and the copolymer of the polybenzimidazole contain amino that can be used for crosslinking. The bihalohydrocarbon or the polyhalohydrocarbon is used as cross linking agent. The polybenzimidazole crosslinking membrane with good property can be prepared through crosslinking reaction of the amino contained in the polybenzimidazole and the bihalohydrocarbon or the polyhalohydrocarbon.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for preparing a polybenzimidazole cross-linked film cross-linked by two or more halogenated hydrocarbons, and prepares a high-performance halogenated hydrocarbon cross-linked film containing amino-soluble polybenzimidazole, which belongs to chemical material technology field. 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. However, due t...

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
Login to View More