In order to achieving optimal mechanical property, the molar ratio of TDI and total polyesters was set to be 2.1/1 to form some allophanate crosslinks point as shown in table X.

• 为了获得最优的力学性能，TDI和总的聚酯的摩尔比定位2.；1/1以形成一些脲基甲酸酯的交联点，如图X（数字）所示