球磨法制备分散红60微纳米分散液的研究

Preparation of micro-nano-sized C.I. Disperse Red 60 by ball milling

采用氧化锆珠作为球磨介质,以木质素磺酸钠和萘磺酸钠甲醛缩合物为分散剂,讨论了球磨处理C.I.Disperse Red60染料制备微纳米染料分散液的工艺参数对染料粒径和分散稳定性的影响.结果表明,不同直径氧化锆混合的球磨介质优于单一直径氧化锆,木质素磺酸钠与萘磺酸钠混合分散剂优于单一分散剂.当分散液中染料用量为20%,m(染料)∶m(分散剂)=1∶1,复合分散剂m(木质素磺酸钠CBOS-4)∶m(萘磺酸钠MF)=2∶1,多元醇添加剂用量为10%(对染液总质量),采用m(Φ=2 mm)∶m(Φ=1 mm)∶m(Φ=0.5mm)=17.5∶65∶17.5混合氧化锆球珠作为介质,m(染料)∶m(介质)=1∶20,球磨48 h,得到了稳定的染料分散液,颗粒平均粒径D50为132 nm.

The micro- nano- sized C.I. Disperse Red 60 was prepared from the corresponding commodity disperse dye by bal mil ing, using zirconia beads as the bal mil medium and sodium lignosulphonate/polynaph？thalenesulphonate as dispersants. The effects of mil ing parameters on the particle size of the dye and its dispersion stability were investigated. The results showed that mixed- bal mil medium with different diameters was better than that of single diameter of bal , and mixed dispersants excel ed their separate components. Under the conditions of the dye amount 20% in the dispersion, mass ratio of the dye/dispersant 1∶1, mass ratio of sodium lignosulphonate CBOS- 4/polynaphthalenesulphonate MF 2∶1, polyol amount 10% in the dispersion （on the mass of dye solution）, mixedbal mil medium of zirconia beads Φ=2 mm/Φ=1 mm/Φ=0.5 mm with mass ratio of 17.5∶65∶17.5, mass ratio of the dye/mil medium 1∶20, and the mil ing time 48 h, a stable dye dispersion was obtained with 132 nm of average particle size D50.