概述继四十年代末期出现的液体橡胶后,于五十年代出现了带活性官能团的液体聚合物。到六十年代中期,随着宇宙航空技术和胶粘剂的发展,近几年来又出现了一种“预聚物”。它是带有活性官能团的低分子聚合 Overview Liquid polymers with reactive functional groups developed in the 1950s following the emergence of liquid rubber in the late 1940s. By the mid-1960s, with the development of aerospace technology and adhesives, a “prepolymer” appeared in recent years. It is a low molecular weight polymer with reactive functional groups