Figueroa-Lara José de Jesús, Torres-Rodríguez Miguel, Gutiérrez-Arzaluz Mirella, Romero-Romo Mario
Graduated Studies in Science and Engineering of Materials, Universidad Autónoma Metropolitana-Azcapotzalco, Ave. San Pablo 180, Col Reynosa CP 02200, Mexico.
Materials (Basel). 2017 Sep 27;10(10):1135. doi: 10.3390/ma10101135.
This research presents the interaction of the epoxy polymer diglicydil ether of bisphenol-A (DGEBA) with silica (SiO₂) nanoparticles plus zirconia (ZrO₂) nanoparticles obtained via the sol-gel method in the synthesis of an epoxy-silica-zirconia hybrid adhesive cured with polyamide. ZrO₂ nanoparticles were added to the epoxy-silica hybrid adhesive produced in situ to modify the apparent shear strength of two adhesively bonded aluminum specimens. The results showed that the addition of different amounts of ZrO₂ nanoparticles increased the shear strength of the adhesively bonded aluminum joint, previously treated by sandblasting, immersion in hot water and silanized with a solution of hydrolyzed 3-glycidoxipropyltrimethoxysilane (GPTMS). The morphology and microstructure of the nanoparticles and aluminum surfaces were examined by scanning electron microscopy (SEM), and elemental analysis was performed with the Energy-dispersive X-ray spectroscopy (EDS) detector; the chemical groups were investigated during the aluminum surface modification using Fourier transform infrared spectroscopy (FTIR).
本研究展示了双酚 A 二缩水甘油醚（DGEBA）这种环氧聚合物与通过溶胶 - 凝胶法获得的二氧化硅（SiO₂）纳米颗粒以及氧化锆（ZrO₂）纳米颗粒之间的相互作用，该相互作用发生在由聚酰胺固化的环氧 - 二氧化硅 - 氧化锆杂化胶粘剂的合成过程中。将 ZrO₂ 纳米颗粒添加到原位制备的环氧 - 二氧化硅杂化胶粘剂中，以改变两个用胶粘剂粘结的铝试件的表观剪切强度。结果表明，添加不同量的 ZrO₂ 纳米颗粒提高了经喷砂处理、热水浸泡并用 3 - 缩水甘油氧基丙基三甲氧基硅烷（GPTMS）水解溶液进行硅烷化处理的粘结铝接头的剪切强度。通过扫描电子显微镜（SEM）检查纳米颗粒和铝表面的形态及微观结构，并用能量色散 X 射线光谱（EDS）探测器进行元素分析；在铝表面改性过程中，使用傅里叶变换红外光谱（FTIR）研究化学基团。
