Polyimide

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Polyimide 2016-12-06T05:35:24+00:00

Polyimide

       

As a class of organic resins the polyimides exhibit outstanding engineering properties, especially thermal stability. Their introduction in the 1960s made significant contributions to meet exacting demands of industry, aerospace, military and nuclear developments. Although polyimide resin structures were known some years earlier, the commercial developments by Du Pont led in 1961 to the introduction of film (under the tradename Kapton) and varnishes for electrical applications. Subsequently moulding powders, laminating resins, foams and composite materials and especially high performance adhesives became available.

Polyimides have exceptional heat resistance, where very high-level mechanical properties can be sustained at temperatures of 250°C or more. Excellent electrical, solvent resistance, flame retardance, abrasion resistance, oxidative and radiation resistance properties have led to a range of critical applications.

The possible replacement of some metal and ceramic components shows the extraordinary advances made in the developments of organic plastics within a short time span. Industries such as nuclear, aerospace, electronic, automotive, etc., as well as products such as self-lubricating pumps, bearings and such, indicate the true value and penetration of polyimides from exotic engineering areas to those of everyday life.