【作者】 朱新兵； 曹长年； 李光红； 田佳兴；

【Author】 ZHU Xinbing, CAO Changnian, LI Guanghong, TIAN Jiaxing (School of Chemical Engineering, Qinghai University, Xining 810016)

【机构】 青海大学化工学院；

【摘要】 十二烷基苯磺酸钠/油酸钠/聚乙二醇1000复配表面活性剂作为改性剂,对氢氧化镁阻燃剂进行改性研究。通过改性前后氢氧化镁粉体的吸油值及其在液体石蜡中的吸光度等性能来评价氢氧化镁的改性效果,从而确定最佳改性条件,同时采用红外谱图研究了表面改性分子与氢氧化镁表面的作用机理。正交实验结果表明,在表面改性剂的用量为9%(质量分数),十二烷基苯磺酸钠/油酸钠/聚乙二醇1000的配料比为1:2:1(质量比),改性温度为70℃,改性时间为80min条件下制备的产品性能优良,在石蜡中分散性良好,红外光谱显示表面改性剂分子在氢氧化镁表面发生化学吸附。更多还原

【Abstract】 Magnesium hydroxide for flame–retardant was modified by sodium dodecyl benzenesulfonate/sodium oleate/polyethylene glycol 1000 combinational surfactant as modifier. Modified effects were evaluated by measurement of oil absorbility and absorbance in liquid paraffin of the system. The best conditions of modification were determined by these properties. Meanwhile, modification mechanism of magnesium hydroxide was reserched by means of IR. Orthogonality experiment results showed that the products with excellent modification effect was prepared under the condition of 9%(mass fraction)in dosage, the mass ratio of sodium dodecyl benzenesulfonate/sodium oleate/polyethylene glycol 1000 was 1:2:1(mass ratio), and 70℃ in temperature, 80min in time. Dispersion in liquid paraffin took a certain improvement. IR showed that modifier molecules are absorbed onto the surface of magnesium hydroxide mainly by chemisorption bond.更多还原