The elongation of the HIPS was obviously raised by improving the condition of devolatilization and increasing the molecular weight of polystyrene and the feed of atoleine.

• 通过提高聚苯乙烯分子量,加大液体石蜡的投入量及改进脱除挥发分的条件,提高高抗冲聚苯乙烯的伸长率。