Tailorable polyimide prepolymer blends, crosslinked polymides and articles formed therefrom

摘要

A polyimide prepolymer blend including a first prepolymer component comprising a first polyimide oligomer having the formula E₁-[R₁]_n-E₁ and a second prepolymer component selected from M₁, a second polyimide oligomer having the formula E₂-[R₂]_n-E₂, and combinations thereof; where R₁ and R₂ independently comprise:; where n is from about 1 to about 5, V is a tetravalent substituted or unsubstituted aromatic monocyclic or polycyclic linking structure, R is a substituted or unsubstituted divalent organic radical. E₁ and E₂ independently comprise crosslinkable functional groups. M₁ comprises a mixture of monomeric compounds including a diamine component, a dianhydride component, and an end group component. The prepolymer blend, prior to cure, provides at least one predetermined prepolymer blend property; and when cured under suitable cure conditions, the prepolymer blend provides a crosslinked polyimide matrix having at least one predetermined crosslinked matrix property.