Laminates show increased impact resistances and other desirable mechanical properties. Bismaleamic acid extended by reaction of diaminosiloxane with maleic anhydride in 1:1 molar ratio, followed by reaction with half this molar ratio of aromatic dianhydride. Bismaleamic acid also extended by reaction of diaminosiloxane with maleic anhydride in 1:2 molar ratio, followed by reaction with half this molar ratio of aromatic diamine (Michael-addition reaction). Impact resistances improved over those of unmodified bismaleimide, showing significant increase in toughness. Aromatic addition polyimides developed as both matrix and adhesive resins for applications on future aircraft and spacecraft.
Tougher Addition Polyimides Containing Siloxane
NASA Tech Briefs ; 10 , 3
1986-05-01
Miscellaneous
No indication
English
Polyimides That Contain Pendent Siloxane Groups
Online Contents | 1996
Polyimides That Contain Pendent Siloxane Groups
NTRS | 1996
|Improved processability of addition polyimides
NTRS | 1977
|Tema Archive | 1999
IuD Bahn | 2002
|