叔胺型与季铵型阳离子分散松香施胶剂的性能比较

用苯乙烯、丙烯酸酯与甲基丙烯酸二甲胺乙酯或二甲基二烯丙基氯化铵的共聚物作乳化剂分别制备了叔胺型阳离子分散松香施胶剂(SYM-1)和季铵型阳离子分散松香施胶剂(JYM-1),并比较了它们的施胶性能。实验结果表明,叔胺型高分子表面活性剂(SYS-1)的电荷密度和SYM-1的施胶性能受pH值影响较大,SYM-1的施胶度在相同施胶条件下比JYM-1大10 s以上,但在含碳酸钙抄纸体系中失去其施胶性。季铵型高分子表面活性剂(JYS-1)的电荷密度不受pH值的影响,用硫酸铝和聚乙烯胺复合物作定着剂时JYM-1在含碳酸钙抄纸体系中的施胶度大于5 s。

Property Comparison of Cationic Rosin Emusions between Tertiary Amine Type and Quaternary Ammonium Type

Cationic rosin emulsions with tertiary amino groups(SYM-1) and with quaternary ammonium groups(JYM-1) respectively were prepared from rosin and copolymers of styrene,acrylic ester and dimethylamino ethyl methacrylate or dimethyldiallyl ammonium chloride as emulsifying agents,and their sizing performances were compared.The results showed that the electric charge density of the polymeric surfactant with tertiary amino groups(SYS-1) and the sizing performance of SYM-1 were influenced greatly by changes of pH value. The sizing degree of SYM-1 was 10 s larger than that of JYM-1 under the same condition,but SYM-1 lost its sizing performance in the papermaking system containing 10 % of CaCO3.The electric charge density of the cationic polymeric surfactant with quaternary ammonium group(JYS-1) did not change with the increase of pH value from 1 to 11.The sizing degree of JYM-1 was larger than 5 s in the system containing CaCO3 when the complex of alum and polyvinylamine was used as anchor agent.