The waste paper stock was used to study the effect of the dosage and sequence of PEO and PFR on retention as well as that of themolecular weight of PEO on it.

• 以废纸浆为主要原料,研究了聚氧化乙烯和酚醛树脂的用量、添加次序以及聚氧化乙烯的分子量对助留效果的影响,并研究了阴离子表面活性剂对其留着效果的影响。