Alam Mohammad Asif, Samad Ubair Abdus, Abdo Hany S, Anis Arfat, Alnaser Ibrahim A, Hassan Ahmed, Al-Zahrani Saeed M
Center of Excellence for Research in Engineering Materials (CEREM), King Saud University, Riyadh 11421, Saudi Arabia.
SABIC Polymer Research Center (SPRC), Chemical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia.
ACS Omega. 2024 Sep 10;9(38):39452-39463. doi: 10.1021/acsomega.4c02971. eCollection 2024 Sep 24.
This research endeavor deals with the development of an epoxy hybrid nanocomposite using aliphatic diglycidyl ether of a bisphenol A (DGEBA) epoxy matrix. The formulation used the stoichiometric ratio of the curing agent and incorporated nanopigments such as zirconium and silica, along with other microfillers. We incorporated Zr and SiO nanoparticles and various other additives in the epoxy matrix and ensured homogeneous dispersion by using sonication methodology along with silane as a coupling agent. Aluminum molds were utilized to fabricate dumbbell-shaped ASTM standard samples for the testing of mechanical properties. The adhesive properties were evaluated through standard lap shear tests. Fourier transform infrared spectroscopy was utilized to analyze the cross-linking reaction of the epoxy moiety and the polyamidoamine adduct curing agent. Further characterization using field emission scanning electron microscopy, energy-dispersive spectroscopy, and high-resolution transmission electron microscopy confirmed the presence and uniform dispersion of the fillers and nanopigments. The results showed good enhancements in ultimate tensile strength, yield strength, and elastic modulus of 95.3, 162.1, and 425.4%, respectively, compared to formulations using only SiO. The addition of ZrO and SiO, along with various microfillers, such as talc and aluminum silicate, led to significant improvements in the mechanical properties. This study demonstrates the synergistic efficiency of combining SiO and ZrO along with microfillers, such as talc and aluminum silicate, in epoxy resin for diverse applications in the construction industry, where mechanical strength and substrate adhesion are crucial.
本研究致力于开发一种使用双酚A脂肪族二缩水甘油醚（DGEBA）环氧基体的环氧杂化纳米复合材料。该配方采用了固化剂的化学计量比，并加入了锆和二氧化硅等纳米颜料以及其他微填料。我们在环氧基体中加入了Zr和SiO纳米颗粒以及各种其他添加剂，并通过超声处理方法以及使用硅烷作为偶联剂确保了均匀分散。利用铝模具制造哑铃形ASTM标准样品以测试机械性能。通过标准搭接剪切试验评估粘合性能。利用傅里叶变换红外光谱分析环氧部分与聚酰胺胺加合物固化剂的交联反应。使用场发射扫描电子显微镜、能量色散光谱和高分辨率透射电子显微镜进行的进一步表征证实了填料和纳米颜料的存在及其均匀分散。结果表明，与仅使用SiO的配方相比，极限拉伸强度、屈服强度和弹性模量分别有95.3%、162.1%和425.4%的显著提高。ZrO和SiO与滑石和硅酸铝等各种微填料的添加导致机械性能有显著改善。本研究证明了在环氧树脂中结合SiO和ZrO以及滑石和硅酸铝等微填料的协同效率，可用于建筑行业中机械强度和基材附着力至关重要的各种应用。
