稻壳灰和荞麦壳灰对环氧材料生物降解性的影响

E. Gotlib, E. Perushkina, R. S. Ntsoumou, E. Yamaleeva
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摘要

由于环氧树脂的微生物抗性,其生命周期结束后的处理是一个紧迫的问题。在这方面,使用可生物降解的大米和荞麦壳衍生物作为填料可以改善环氧材料的使用性能。结果表明,稻壳和荞麦壳及其灰烬可被土壤微生物用作基质。与荞麦壳相比,稻壳在很大程度上提高了土壤微生物群的生物活性。然而,与稻壳相比,稻壳灰获取温度的升高会导致土壤微生物将其作为基质的使用减少。这与稻壳灰组成中x射线非晶相的含量减少和结晶矿物的数量增加有关。同时,无论生产温度如何,荞麦壳灰在活化土壤呼吸方面都优于荞麦壳,这表明荞麦壳灰在土壤中培养期间微生物处理的可能性。环氧材料,无论是未填充还是填充大米和荞麦壳灰,都不被土壤微生物用作基质。同时,稻壳填充环氧树脂材料,提高了环氧树脂材料的生物降解性。稻壳和荞麦壳及其灰的生物降解程度决定了这些填料在环氧材料存在下对土壤呼吸的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of rice and buckwheat husk ash on the biodegradability of epoxy materials
Due to the microbiological resistance of epoxy resins, their disposal after the completion of their lifecycle is a pressing issue. In this respect, the use of biodegradable rice and buckwheat husk derivatives as fillers may improve the service properties of epoxy materials. The results indicate that rice and buckwheat husks, as well as their ashes, can be used by soil microorganisms as a substrate. Compared to buckwheat husks, rice husks increase the biological activity of soil microbiota to a much greater extent. However, compared to rice husks, an increase in the temperature of obtaining rice husk ash leads to a decrease in its use by soil microorganisms as a substrate. This is associated with a decreased content of the X-ray amorphous phase and an increased amount of crystalline minerals in the composition of rice husk ash. At the same time, regardless of the temperature of its production, buckwheat husk ash outperforms buckwheat husks in terms of activated soil respiration, which indicates the possibility of microbiological disposal of buckwheat husk ash during its incubation in a soil. Epoxy materials, both unfilled and filled with rice and buckwheat husk ash, are not used by soil microorganisms as a substrate. At the same time, the filling of epoxy materials with rice husks leads to an improvement in their biodegradability. The biodegradation degree of rice and buckwheat husks, as well as their ashes, determines the effect of these fillers on soil respiration in the presence of epoxy materials.
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