It is observed by mans of solvent extraction and electron microscopy, that the morphology of liquid NBR modified phenolic resin (L-NBR-MPR) is of physically blended two-phase structure.

• 用溶剂萃取法、扫描电子显微镜法研究了上述改性树脂的形态结构,研究结果认为,液体NBR改性酚醛树脂具有明显的两相结构,是一种物理共混物。