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        Polybenzimidazole (PBI)

        PBI

        產品詳情

        A benzo five-membered heterocyclic rigid chain polymer containing two nitrogen atoms. It is generally made by aromatic polyamine and diphenyl phthalate through polycondensation and cyclization. The reaction can be carried out in a molten state or in a strong polar solvent. The thermal stability of aromatic PBI in nitrogen is more than 500 ℃. The introduction of flexible groups or side groups can improve the solubility, but the thermal stability is reduced. Trade name Celazole PBI. Poly m-phenylene bibenzimidazole plastic has a thermal deformation temperature of 430 ° C, a limiting oxygen index of 58, a compressive strength of 410 MPa, a tensile strength of 165 MPa, a flexural strength of 227 MPa, a friction coefficient of 0.27 with steel, a dielectric constant of 3.3, radiation resistance, Excellent resistance to boiling water, solvents and chemicals. It can be used as high-temperature-resistant adhesives and high-performance composite materials. It is widely used in aerospace, chemical machinery, petroleum mining, automobiles and other fields, and fiber fabrics are used as protective clothing against fire and atomic radiation.

        Title
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