Taking 2,4,6-triaminopyrinide as triamine monomer,polyimide foams with cross-linked structures were prepared by foaming poly(ester-amine salt) precursor powders.

• 以2,4,6-三氨基嘧啶为三胺单体,经由聚酯铵盐前体粉末发泡合成了具有交联结构的聚酰亚胺泡沫。