Bio‐waste materials such as eggshell (ES) and fishbone (FB) were used as new fillers compared with commercial calcium carbonate (CC) in natural rubber composite. The effect of their presence in the rubber mix on the rheometric study, morphology, mechanical properties, hardness, and abrasion resistance has been investigated at constant filler content (30 phr). The filler and their composites were characterized by Fourier‐transform infrared, X‐ray diffraction, thermogravimetric analysis, and scanning electron microscope (SEM). The results showed that the cure time and scorch time of the composites filled with CC and ES are lower than the composites filled FB filler. On the other hand, composites with ES and CC showed enhanced values of tensile, modulus at 100% and 300% elongation, hardness, and abrasion resistance. The morphological data revealed that CC and ES fillers are better dispersed in the rubber matrix than FB filler. J. VINYL ADDIT. TECHNOL., 26:309–315, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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碳酸钙填充天然橡胶固化特性和力学性能的比较研究。

与天然橡胶复合材料中的商业碳酸钙（CC）相比，蛋壳（ES）和鱼骨（FB）等生物废物材料被用作新型填料。在恒定的填料含量（30 phr）下，已经研究了它们在橡胶混合物中的存在对流变学研究，形貌，机械性能，硬度和耐磨性的影响。通过傅立叶变换红外，X射线衍射，热重分析和扫描电子显微镜（SEM）对填料及其复合材料进行表征。结果表明，填充CC和ES的复合材料的固化时间和烧焦时间均低于填充FB的复合材料。另一方面，具有ES和CC的复合材料显示出更高的拉伸值，100％和300％伸长率下的模量，硬度和耐磨性。形态数据表明，CC和ES填料比FB填料更好地分散在橡胶基质中。J.乙烯基添加物。TECHNOL。，26：309–315，2020.©2019塑料工程师协会