syntactic polyimide foams were prepared by prepolymerization method. The cell structure
thermal properties and compress properties of polyimide foams filled with hollow glass bead were studied. The results show that with the increasing content of hollow glass bead
the cell structure became fine
thermal stability
the glass transition temperature and compress properties were improved. The temperatures at 5 % weight loss increased by 13. 9 ℃
the glass transition temperature increased by 8. 1 ℃
compression strength increased by approximately 21 % and compression modulus increased by about 12 % with 20 % content of hollow glass beads.