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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Role of the silica source on the geopolymerization rate ALL or
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Role of the silica source on the geopolymerization rate ALL or

机译：二氧化硅源对地聚合速率ALL或

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摘要

The synthesis of geopolymer-silica composites was achieved at room temperature to determine the role of the silica source (quartz or amorphous silica) on the polycondensation rate and the mechanical properties of synthesized materials. Then, samples with a composition range from 100% quartz to 100% amorphous silica were formed, compared and characterized by XRD, infrared spectroscopy, thermal analysis, SEM, and compression tests. The results give evidence that the increase of amorphous silica in the mixture favors the polycondensation reaction (i.e., "geopolymerization") to form consolidated materials whereas quartz led to heterogeneous materials without cohesion. These facts are explained by the modification of the Si/Al ratio in the geopolymer matrix due to the increase of quartz in the mixture.
机译：在室温下完成了地聚合物-二氧化硅复合材料的合成，以确定二氧化硅源（石英或无定形二氧化硅）对缩聚速率和合成材料力学性能的作用。然后，形成具有100％石英至100％无定形二氧化硅组成的样品，并通过XRD，红外光谱，热分析，SEM和压缩测试进行比较和表征。结果表明，混合物中无定形二氧化硅的增加有利于缩聚反应（即“地聚”）形成固结材料，而石英导致不具有内聚力的异质材料。这些事实是由于混合物中石英含量的增加，改变了地质聚合物基体中Si / Al的比例。

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