Jeong Hyeon Woo, Park Kyoung Tae, Oh Su Min, Shim Sang Eun, Qian Yingjie
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, NengYuan Street 2, Tianhe District, Guangzhou 510640, China.
Department of Chemistry and Chemical Engineering, Education and Research Center for Smart Energy and Materials, Inha University, Incheon 22212, Republic of Korea.
Polymers (Basel). 2025 Feb 3;17(3):406. doi: 10.3390/polym17030406.
The objective of this study is to compare rice husk-derived silica (biosilica) synthesized via an environmentally friendly method with conventional silica (Zeosil 175) for reinforcing the mechanical properties of silicone rubber. The silanol group content of Zeosil 175 (9.45 OH/nm) is higher than that of biosilica (7.07 OH/nm), whereas the specific surface area of biosilica (159.52 m/g) exceeds that of Zeosil 175 (144.90 m/g). Silicone rubber specimens containing two types of silica nanoparticles were prepared at loading levels of 5, 10, 15, 20, 25, and 30 parts per hundred rubber to evaluate their mechanical properties and characteristics. Results indicate that silicone rubber filled with biosilica shows comparable tensile strength to Zeosil 175 at low filler contents, which can be attributed to its higher specific surface area. However, at higher loading levels, the mechanical properties are somewhat diminished due to the Payne effect and filler agglomeration resulting from the larger particle size of biosilica. These experimental findings offer insights into the potential utilization of rice husk-derived biosilica as an alternative to conventional silica in enhancing the properties of silicone rubber alongside the findings of the mechanical analysis.
本研究的目的是将通过环保方法合成的稻壳衍生二氧化硅（生物二氧化硅）与传统二氧化硅（Zeosil 175）进行比较，以增强硅橡胶的机械性能。Zeosil 175的硅醇基含量（9.45 OH/nm）高于生物二氧化硅（7.07 OH/nm），而生物二氧化硅的比表面积（159.52 m/g）超过Zeosil 175（144.90 m/g）。制备了含有两种类型二氧化硅纳米颗粒的硅橡胶试样，填充量为每百份橡胶5、10、15、20、25和30份，以评估其机械性能和特性。结果表明，在低填料含量下，填充生物二氧化硅的硅橡胶与Zeosil 175具有相当的拉伸强度，这可归因于其较高的比表面积。然而，在较高填充量下，由于佩恩效应以及生物二氧化硅较大粒径导致的填料团聚，机械性能有所下降。这些实验结果为稻壳衍生生物二氧化硅作为传统二氧化硅的替代品在增强硅橡胶性能方面的潜在应用提供了见解，同时也提供了机械分析的结果。
