Poly(methyl silsesquioxanes), PMSQ, are cyclic siloxanes with unusual features that are also widely known as silsesquioxanes due to their organic peripheral and inorganic silicate interior. These are organosilicon compounds with the chemical formula [RSiO_3/2]_n that are called silsesquioxanes where R may be alkyl, alkoxyl or aryl. These hybrid materials are quite famous to exhibit garner properties from their different inorganic and organic parts in a synergistic way. However, dealing with long-standing challenges and environmentally friendly requirements, we synthesized these PMSQ fine nanoparticles in our own laboratory. These nanoparticles were uniformly dispersed in a bio-based epoxy resin, and the mechanical properties, adhesive strength, and morphology of resultant nanocomposites were evaluated. PMSQ were found to be successfully dispersed into the bio-based epoxy resin in varying weight fractions of 1 wt%, 3 wt% and 5 wt%. The mechanical properties of PMSO-loaded epoxy resin samples are reported as functions of processing parameters. The highly dispersed PMSQ/bio-based epoxy resin nanocomposites showed high tensile modulus and strength values. In addition, it was found that fracture toughness values of all samples prepared by ultra-sonication were increased by increasing PMSQ content in nanocomposites. The corresponding synthesized epoxy resin composites were characterized by different techniques including, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). SEM analysis reported high uniformly dispersed spherical PMSQ particles in epoxy resin. The bonding properties including, tensile modulus and strength of PMSQ were determined using a general testing machine. The obtained results confirmed a significant improvement in bonding performance of PMSQ dispersed in bio-based epoxy resin. PMSQ attracts feasible widespread applications in mechanical and environmental engineering.

中文翻译：

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聚（甲基倍半硅氧烷）/生物基环氧纳米复合材料的粘合性能

聚（甲基倍半硅氧烷），PMSQ，是具有特殊功能的环状硅氧烷，由于其有机外围和无机硅酸盐内部，也被广泛称为倍半硅氧烷。它们是化学式为[RSiO _3/2 ] _n的有机硅化合物它们被称为倍半硅氧烷，其中R可以是烷基，烷氧基或芳基。这些杂化材料以协同作用的方式从其不同的无机和有机部分展现出较高的吸收性能而闻名。但是，面对长期的挑战和环保要求，我们在自己的实验室中合成了这些PMSQ细颗粒。将这些纳米颗粒均匀地分散在生物基环氧树脂中，并评估所得纳米复合材料的机械性能，粘合强度和形态。发现PMSQ以1重量％，3重量％和5重量％的变化的重量分数成功地分散到生物基环氧树脂中。载有PMSO的环氧树脂样品的机械性能被报告为加工参数的函数。高度分散的PMSQ /生物基环氧树脂纳米复合材料显示出高拉伸模量和强度值。另外，发现通过超声处理制备的所有样品的断裂韧性值通过增加纳米复合材料中的PMSQ含量而增加。相应的合成环氧树脂复合材料采用不同的技术进行表征，包括傅立叶变换红外光谱（FTIR），扫描电子显微镜（SEM），热重分析（TGA）和差示扫描量热法（DSC）。SEM分析报告了在环氧树脂中高度均匀分散的球形PMSQ颗粒。使用常规测试机确定包括PMSQ的拉伸模量和强度的粘结性能。获得的结果证实了分散在生物基环氧树脂中的PMSQ的粘合性能有了显着改善。PMSQ在机械和环境工程领域吸引了可行的广泛应用。