PC／ABS共混物形态的研究

研究了PC/ABS共混物的抗冲击样条的切片形态和取向程度。结果表明:共混物中接技橡胶粒子是包藏在SAN相中的。PC/ABS=25/75时,PC为分散相并呈粒状沿注射方向拉长。PC/ABS=75/25时,ABS为分散相并沿注射方向呈纤维状和层状。PC/ABS=50/50时,PC和ABS都为连续相且沿注射方向呈层状排列。原料对共混物形态和取向有影响,其中以ABS的影响最为显著。

STUDY OF MORPHOLOGY IN PC/ABS BLENDS

The morphology of two phase PC/ABS blends in injection molding was investigated by SEM and PCM. PIM was employed to measure orientation.In PC/ABS blends, the grafted rubber is embedded in the SAN phase. WhenPC/ABS = 25/75 the PC dispersed phase domains are elliptical in shape. The major axis of the ellipse is parallel to the injection direction. When PC/ABS = 50/50. Both the PC phase and the ABS phase consist of oriented layers parallel to the injection direction.When PC/ABS=75/ 25 the ABS dispersed phase domains are fibers and layers aligned to the injection direction. The morphology and orientation are influenced by the sort of raw material, especially the ABS grade.