中文摘要：

氢氧化镁(MH ) 它是通常用作没有卤素的火焰延迟在合成材料的蚂蚁填料，被 silanization 反应在不同酸碱值价值(从 8.0 ～ 12.0 的酸碱值范围) 在水溶液与 γ-aminopropyltriethoxysilane (γ-APS ) 修改。当解决方案酸碱值价值的一个函数用元素的分析被学习， MH 上的 grafted γ-APS 的表面性质出现， Fourier 变换红外线的光谱学和希腊语的第六个字母潜力测量。结果证明 γ-APS 的水解作用和冷凝作用在碱性溶液被激活并且在 MH 的表面上导致 γ-APS 分子的多层的吸附。MH 表面上的 γ-APS 的吸附取向的类型是被改变答案酸碱值价值改变的范围密度的功能。在低范围密度(例如 55 nm ⁻²),γ-APS，分子优先地向表面与硅一半被吸附到表面，并且增加范围密度(例如 90 nm， ⁻²) 导致平行取向。在甚至更高的范围密度(例如 115 nm ⁻²),γ-APS，分子向表面与氨基的一半结合到表面。

英文摘要：

Magnesium hydroxide（MH）,which is commonly used as a halogen-free flame retardant filler in composite materials,was modified by silanization reaction with γ-aminopropyltriethoxysilane （γ-APS） in aqueous solution at different pH values （pH range from 8.0 to 12.0）. The surface properties of grafted γ-APS on MH surface as a function of solution pH value were studied using elemental analysis,Fourier transform infrared spectroscopy and zeta potential measurement. The results show that hydrolysis and condensation of γ-APS are activated in alkaline solution and lead to multilayer adsorption of γ-APS molecules on the surface of MH. The type of adsorption orientation of γ-APS on MH surface is a function of coverage density that is altered by changing solution pH value. At low coverage density （e.g. 55 nm^-2）,γ-APS molecules are preferentially adsorbed to the surface with the silicon moiety towards the surface,and increasing coverage density （e.g. 90 nm^-2） leads to parallel orientation. At an even higher coverage density （e.g. 115 nm^-2）,γ-APS molecules bond to the surface with the amino moiety towards the surface.