以螺壳和二氧化硅为原料制备磨料的合成与表征

E. Obidiegwu, H. Mgbemere, Oluwatosin T. Akande
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引用次数: 0

摘要

表面整理操作是制造过程中非常重要的一个方面,如果没有磨料,如金刚砂纸,就无法完全实现。一些用于生产磨料的材料,如氧化铝(Al2O3)和碳化硼(B4C)价格昂贵,因此限制了它们的使用。这项工作旨在从蜗牛壳、二氧化硅(SiO2)和环氧树脂中生产磨料,而三聚氰胺甲醛作为硬化剂。所用原料按ASTM E11-20标准筛选,平均粒度为400µm。复合材料是由不同数量的环氧树脂和其他材料制成的。使用物理、机械和微观结构表征技术对样品进行分析。分析结果表明,随着复合材料中环氧树脂含量的增加,硬度值也随之增加。含有螺壳粉的样品的磨损率高于只含有二氧化硅的样品。通过显微结构测试获得的样品形貌表明,硅基磨料具有更好的界面结合,有助于增强强度。因此,二氧化硅可用于生产具有与传统磨料相媲美的所需机械性能的磨料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SYNTHESIS AND CHARACTERISATION OF ABRASIVE MATERIALS PRODUCED FROM SNAIL SHELLS AND SILICA
Surface finishing operation is a very vital aspect of the manufacturing process and would not fully be achieved without abrasives such as emery paper. Some materials used in the production of abrasives like alumina (Al2O3), and Boron Carbide (B4C) are expensive thereby limiting their usage. This work is aimed at producing abrasive materials from snail shells, silica (SiO2), and epoxy resin while melamine formaldehyde acts as a hardener. The raw materials used were sieved according to ASTM E11-20 standard to obtain an average particle size of 400 µm. The composites were produced by varying different amounts of the epoxy resin as well as the other materials. The samples were analysed using physical, mechanical, and microstructural characterization techniques. An analysis of the results showed that as the content of the epoxy resin in the composite increased, the hardness values increased. The wear rate of the samples containing snail shell powders are higher than those containing only silica. The morphology of the samples obtained through microstructural tests revealed that the silica-based abrasive has better interfacial bonding which helped to confer strength. Therefore, silica can be used to produce abrasives with the required mechanical properties comparable to those of conventional abrasives.
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