School of Materials Science and Chemical Engineering,Tianjin University of Science and Technology School of
Science,Tianjin University of Science and Technology China Coal Research Institute

以自制的木质素磺酸钠(LA)为基体,过硫酸钾(K2S2O8)为引发剂,与甲基丙烯酸(MAA)进行聚合制备甲基丙烯酸接枝木质素磺酸钠的共聚物。利用红外光谱、热重分析等对磺化碱木素与磺化碱木素MAA接枝共聚物进行结构表征,并考察了合成条件对水煤浆分散效果的影响。结果表明:接枝的最佳方案为温度75℃,m(MAA)︰m(LA)︰m(H2O)=1︰3︰150,K2S2O8的质量分数为4%(相对于LA)。将该分散剂用于神华煤成浆试验,证明了该分散剂具有较好的分散作用。

Based on self made sodium lignosulfonate,potassium persulfate( K2S2O8) as initiator with methacrylic acid could polymerize and prepare methacrylic acid graft and sodium lignosulfonate copolymer. The Infrared Spectrum and thermogravimetric analysis were applied to the structure characterization on the lignosulfonate and | ignosulfonate MAA graft copolymer and to investigate the synthesis conditions affected to the dispersion effect of the coal water mixture. The results showed that the best p lan of graft was a temperature of 75 °C,m( MAA) : m(LA) : m( H2O)= 1 : 3 : 150,and the quality fraction of K2S208 was 4%( relative to LA). The dispersant was appli ed to the Shenhua coal slurry test and the dispersant was verified with good dispersion role.

煤炭科学研究总院技术创新基金资助项目(2010CX01)；