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。