Abstract This study focuses on the preparation and characterization of nanocomposite system with bio-based epoxy resin (Super SAP 100/1000, contains 37% bio-based carbon content) and natural clays including Georgian clay and Brazilian clay. Georgian clay was surface modified using an ultrasound processing in presence of Decalin. Brazilian clay was modified to organophilic bentonite using quaternary ammonium salts. The resulting nano clay particles were characterized using XRD and TEM to confirm the particle size reduction and uniform distribution. The as-fabricated nanocomposites were characterized using flexure, DMA, TMA and TGA. The flexure analysis showed that the modified clay composites have significant improvement in strength (23–38%) and modulus (28–37%). Delayed thermal degradation was observed from TGA analysis which showed that the major degradation temperatures improved from 7°-25°C. DMA and TMA analysis showed improvements in storage moduli (4–6%) and coefficient of thermal expansion (CTE) (6–64%), respectively. The notable improvement in thermal and mechanical properties suggested the effective dispersion and the high degree of polymer particle interaction. The bio based content present in the Super Sap 100/1000 acts as plasticizer resulting in the extensive ductility of the polymer.

中文翻译：

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改性格鲁吉亚和巴西粘土注入生物基环氧纳米复合材料的机械和热性能

摘要 本研究的重点是制备和表征具有生物基环氧树脂（Super SAP 100/1000，含有 37% 的生物基碳含量）和天然粘土（包括格鲁吉亚粘土和巴西粘土）的纳米复合体系。在十氢化萘的存在下，使用超声波处理对格鲁吉亚粘土进行了表面改性。使用季铵盐将巴西粘土改性为亲有机膨润土。使用 XRD 和 TEM 对所得纳米粘土颗粒进行表征，以确认粒径减小和分布均匀。使用弯曲、DMA、TMA 和 TGA 表征制造的纳米复合材料。弯曲分析表明，改性粘土复合材料在强度（23-38%）和模量（28-37%）方面有显着提高。从 TGA 分析观察到延迟热降解，表明主要降解温度从 7°-25°C 提高。DMA 和 TMA 分析分别显示了储能模量 (4-6%) 和热膨胀系数 (CTE) (6-64%) 的改进。热性能和机械性能的显着改善表明聚合物颗粒的有效分散和高度相互作用。Super Sap 100/1000 中存在的生物基成分充当增塑剂，导致聚合物具有广泛的延展性。热性能和机械性能的显着改善表明聚合物颗粒的有效分散和高度相互作用。Super Sap 100/1000 中存在的生物基成分充当增塑剂，导致聚合物具有广泛的延展性。热性能和机械性能的显着改善表明聚合物颗粒的有效分散和高度相互作用。Super Sap 100/1000 中存在的生物基成分充当增塑剂，导致聚合物具有广泛的延展性。