Ultra-thin layers of 7-octenyltrimethoxysilane (7-OTMS) and of 7-OTMS mixed with n-octyltrimethoxysilane (n-OTMS) (1/1 and 1/10 v/v) have been prepared as adhesion primers for silicone coatings on mechanically polished AA2024 aluminum alloy. The characterization of the silane grafting has been carried out by X-ray photoelectron spectroscopy (XPS), polarization modulation-infrared reflection-adsorption spectroscopy (PM-IRRAS) and water contact angle measurements. Sylgard®184 silicone has been spin-coated and cured on bare and modified aluminum to form 15 μm polymer films. Qualitative peel tests (ASTM D3359) and scanning electron microscopy (SEM) point to the beneficial effect of the 7-OTMS layer to the adhesion whereas mixed layers show comparatively poor adhesion.

中文翻译：

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7-辛烯基三甲氧基硅烷，一种模型耦合分子，用于研究有机硅弹性体在 Al 2024 合金上的粘合促进作用

7-辛基三甲氧基硅烷 (7-OTMS) 和 7-OTMS 与正辛基三甲氧基硅烷 (n-OTMS)（1/1 和 1/10 v/v）混合的超薄层已被制备为有机硅涂层的粘合底漆机械抛光 AA2024 铝合金。硅烷接枝的表征已通过 X 射线光电子能谱 (XPS)、偏振调制-红外反射-吸附光谱 (PM-IRRAS) 和水接触角测量进行。Sylgard®184 有机硅已在裸铝和改性铝上旋涂和固化，形成 15 μm 聚合物薄膜。定性剥离测试 (ASTM D3359) 和扫描电子显微镜 (SEM) 表明 7-OTMS 层对粘附力的有益影响，而混合层显示出相对较差的粘附力。