钛酸酯偶联剂表面改性纳米氢氧化铝阻燃剂的工艺  

Optimization of Titanate Coupling Agent Surface Modification of Nano-sized Aluminum Trihydroxide Flame Retardant

作　　者：王艳飞[1] 郭尧[1] 张艳维[1] 宋海香[1] 牛永生[1] 张红松[2] 

机构地区：[1]安阳工学院化学与环境工程学院,河南安阳455000 [2]河南工程学院机械工程学院,郑州451191

出　　处：《表面技术》2017年第4期217-221,共5页Surface Technology

基　　金：河南省教育厅科学技术研究重点项目(13B430009)~~

摘　　要：目的以化学键合法替代传统物理包覆法改性纳米氢氧化铝(Nano-ATH)阻燃剂,改善其在有机高聚物中的分散稳定性和相容性。方法以钛酸酯偶联剂UP-311湿法表面改性Nano-ATH,运用正交实验的方法,研究改性剂用量、改性温度、改性时间对Nano-ATH粒径的影响,并通过红外光谱、粒度及Zeta电位等分析手段对最佳改性条件下制备的Nano-ATH的改性效果进行评价。结果最佳改性条件为:改性剂用量3%(占Nano-ATH质量的百分比),改性温度75℃,改性时间30 min,钛酸酯偶联剂与Nano-ATH以化学键结合。结论 Nano-ATH的表面性能由亲水疏油变为亲油疏水,达到了对Nano-ATH阻燃剂改性修饰的目的。The work aims to improve the dispersivity and compatibility of nano-sized aluminum trihydroxide（Nano-ATH） flame retardant modified in chemical grafting method instead of traditional physical adsorption method. Wet surface modification of Nano-ATH was carried out with titanate coupling agent UP-311. Effects of coupling agent usage, modification temperature and modification time on particle size of Nano-ATH were studied in orthogonal experiment method. The modification effect on Nano-ATH prepared under optimal modification conditions was evaluated by such analytical means as infrared spectroscopy, particle size and Zeta potential, respectively. The optimal modification conditions were： m（modifier）：m（Nano-ATH） as 0.03：1, modification temperature as 75 ℃, and modification time as 30 min. Nano-ATH could be bonded with titanate coupling agent UP-311 by virtue of chemical bond. Surface property of the Nano-ATH powder is changed obviously after modification, the hydrophile-oleophobic Nano-ATH turns into lipophilic-hydrophobic Nano-ATH, and the purpose of surface modifica-tion is achieved.

关 键 词：纳米氢氧化铝 正交实验 阻燃剂 表面改性 钛酸酯偶联剂 

分 类 号：TQ133.1[化学工程—无机化工]