Pepa: Her only crime was falling in love and being afraid. Id do the same.

佩帕：她惟一的罪就是爱和害怕。我也一样。

A series of polyurethane (PU) elastomer were synthesized from polyester(PEA, PEPA) or polyether(PTMG), toluene dissocyanate (TDI), mixture of triisopropanolamine(TIPA) and 1,4-butanediol(BDO).

以聚酯（PEA、PEPA）或聚醚（PTMG）和TDI为原料合成聚氨酯预聚体，用三异丙醇胺 （TIPA）和1，4-丁二醇（BDO）的混合物作扩链剂制备聚氨酯弹性体。