腈纶生产中二氧化钛浆液稳定性的研究

介绍了高浓度硫氰酸钠水溶液中聚丙烯腈溶液添加量、搅拌时间、搅拌速度和pH值等变化时对二氧化钛浆液稳定性的影响。实验结果表明,随聚丙烯腈溶液添加量的变化,聚丙烯腈会显示分散和絮凝的效应。在较多的聚丙烯腈溶液在在时,用较慢的搅拌速度(200 r/min),较长的搅拌时间(6h),可获得二周内见乎不沉降的二氧化钛浆液。在pH值为4.75时,二氧化钛浆液的稳定性较其它pH值时为差。

STUDY OF THE STABILITY OF TITANIUM DIOXIDE SLURRY IN THE PRODUCTION OF ACRYLIC FIBER

The effects of the adding amount of PAN into highly concentrated sodium thio-cyanate (NaScN)aqueous solution, stirring time, stirring speed and PH value etc.on the stability of titanium dioxide (TiO_2) slurry are discussed. The experimentalresults show that the titanium dioxide slurry exhibits disperse and floccular effectswith different amounts of PAN. In the presence of bigger amount of PAN, thetitanium dioxide slurry shows almost no sedimentation within two weeks by slowerstirring speed (200r.p.m) and longer stirring time (6h). The stability of TiO_2 slurryat PH value 4.75 is poorer than that of others.