The structure of NCO-teminated polyurethane prepolymer and SPU was characterized by FTIR and GPC.Results showed that silane coupler was successfully grafted to the end of polyurethane prepolymer.

• 利用红外光谱（FTIR）和凝胶色谱（GPC）表征了PU和SPU预聚体的结构和分子量，证明了硅烷偶联剂成功地接枝于PU预聚体的端基上。