Effects of nano-CaCO3 and nano-iron phosphate on microstructure and properties of SiO2 porous ceramics prepared by direct foaming

Cao, Jinjin; Li, Wenfeng; Guo, Huishi; Feng, Xiyun; Liu, Baoliang; Shen, Tianzi; Hou, Yonggai; Shi, Kai; Jin, Peng; Wang, Jingxuan; Xia, Yi

doi:10.1016/j.mtcomm.2023.105690

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…There are currently two main areas of concentration for insulating material research and development. The goal of encouraging the use of environmentally friendly building materials and products is becoming increasingly important, which, in turn, is encouraging the development of insulation materials with a lower environmental impact throughout their entire life cycle, favoring those that are quickly renewable, derived from plants or animals, potentially recyclable, non-toxic, and have low energy production methods [14].…”

Section: Introductionmentioning

confidence: 99%

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

2023

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Researchers are continuously seeking to develop new materials to protect against inclement weather and thus optimize energy efficiency in housing. This research aimed to determine the influence of corn starch percentage on the physicomechanical and microstructural properties of a diatomite-based porous ceramic. The starch consolidation casting technique was applied to fabricate a diatomite-based thermal insulating ceramic with hierarchical porosity. Diatomite mixtures with 0%, 10%, 20%, 30%, and 40% starch were consolidated. The results show that starch content significantly influences apparent porosity, and this, in turn, influences several parameters, such as thermal conductivity, diametral compressive strength, microstructure, and water absorption of diatomite-based ceramics. The porous ceramic processed by the starch consolidation casting method corresponding to the mixture of diatomite with 30% starch obtained the best properties, with a thermal conductivity of 0.0984 W/m·K, an apparent porosity of 57.88%, a water absorption of 58.45%, and a diametral compressive strength of 35.18 kg/cm2 (3.45 MPa). Our results reveal that the diatomite-based ceramic thermal insulator obtained by starch consolidation is effective for use on roofs to improve thermal comfort in dwellings located in cold regions.

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Section: Introductionmentioning

confidence: 99%

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

2023

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Influence of MgO-Al ₂ O ₃ hollow sphere content on the microstructure and mechanical properties of calcium hexaluminate porous ceramics

Chen,

Li,

Ren

et al. 2023

Journal of Asian Ceramic Societies

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Effect of Microsize and Nanosize TiO2 on Porous Mullite-Alumina Ceramic Prepared by Slip Casting

Mahnicka-Goremikina,

Rundans,

Goremikins

et al. 2024

Materials

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Sintered porous mullite-alumina ceramics are obtained from the concentrated suspension of powdered raw materials such as kaolin, gamma and alpha Al2O3, and amorphous SiO2, mainly by a solid-state reaction with the presence of a liquid phase. The modification of mullite ceramic is achieved by the use of micro- and nanosize TiO2 powders. The phase compositions were measured using an X-ray powder diffraction (XRD) Rigaku Ultima+ (Tokyo, Japan) and microstructures of the sintered specimens were analysed using scanning electron microscopy (SEM) Hitachi TM3000-TableTop (Tokyo, Japan). The shrinkage, bulk density, apparent porosity, and water uptake of the specimens was determined after firing using Archimedes’ principle. The apparent porosity of the modified mullite ceramic is 52–69 ± 1%, water uptake is 33–40 ± 1%, pore size distributions are 0.05–0.8 μm, 0.8–10 μm and 10–1000 μm, and bulk density are variated from 1.15 ± 0.05 to 1.4 ± 0.05 g/cm3. The microsize TiO2 and nanosize TiO2 speed up the mullitisation process and allow the decrease in the quantity used as raw material amorphous SiO2, which was the purpose of the study. The use of nanosize TiO2 additive increases the porosity of such a ceramic, decreasing the bulk density and linear thermal expansion.

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Effects of nano-CaCO3 and nano-iron phosphate on microstructure and properties of SiO2 porous ceramics prepared by direct foaming

Cited by 3 publications

References 39 publications

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Influence of MgO-Al ₂ O ₃ hollow sphere content on the microstructure and mechanical properties of calcium hexaluminate porous ceramics

Effect of Microsize and Nanosize TiO2 on Porous Mullite-Alumina Ceramic Prepared by Slip Casting

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Effects of nano-CaCO3 and nano-iron phosphate on microstructure and properties of SiO2 porous ceramics prepared by direct foaming

Cited by 3 publications

References 39 publications

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Ceramic Thermal Insulator Based on Diatomite Obtained by Starch Consolidation Casting

Influence of MgO-Al 2 O 3 hollow sphere content on the microstructure and mechanical properties of calcium hexaluminate porous ceramics

Effect of Microsize and Nanosize TiO2 on Porous Mullite-Alumina Ceramic Prepared by Slip Casting

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Influence of MgO-Al ₂ O ₃ hollow sphere content on the microstructure and mechanical properties of calcium hexaluminate porous ceramics