Two-step gradation of particle size in an inorganic-organic hybrid
An inorganic-organic hybrid (IOH) of silica particulates and polyethylene (PE) was investigated, where silica was employed as an analogue to lunar soil. The objective was to search for the optimum materials design strategy for “lunar cements” – infrastructural materials based on locally harvestable...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2015-11-01
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| Series: | Science and Engineering of Composite Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/secm-2014-0042 |
| _version_ | 1819118491131707392 |
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| author | Chen Tzehan Chow Brian J. Qiao Yu |
| author_facet | Chen Tzehan Chow Brian J. Qiao Yu |
| author_sort | Chen Tzehan |
| collection | DOAJ |
| description | An inorganic-organic hybrid (IOH) of silica particulates and polyethylene (PE) was investigated, where silica was employed as an analogue to lunar soil. The objective was to search for the optimum materials design strategy for “lunar cements” – infrastructural materials based on locally harvestable resources on the Moon. If the silica particulate size was uniform, the flexure strength of the IOH decreased quite linearly with the PE content. With a two-step size gradation of silica particulates, the flexure strength of the silica-PE IOH could be much improved, higher than that of Portland cements with only 4 wt% of PE. A threshold PE content around 6 wt% existed. Above the threshold, the PE content has only a secondary effect on the IOH flexure strength; below the threshold, the IOH flexure strength decreases abruptly. In order to further enhance the IOH strength and to reduce the binder content, this threshold value must be minimized. |
| first_indexed | 2024-12-22T05:49:43Z |
| format | Article |
| id | doaj.art-432a8b1ff042403b818a962b8646fe84 |
| institution | Directory Open Access Journal |
| issn | 0792-1233 2191-0359 |
| language | English |
| last_indexed | 2024-12-22T05:49:43Z |
| publishDate | 2015-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Science and Engineering of Composite Materials |
| spelling | doaj.art-432a8b1ff042403b818a962b8646fe842022-12-21T18:36:54ZengDe GruyterScience and Engineering of Composite Materials0792-12332191-03592015-11-0122664364710.1515/secm-2014-0042Two-step gradation of particle size in an inorganic-organic hybridChen Tzehan0Chow Brian J.1Qiao YuProgram of Materials Science and Engineering, University of California – San Diego, La Jolla, CA 92093, USADepartment of Structural Engineering, University of California – San Diego, La Jolla, CA 92093-0085, USAAn inorganic-organic hybrid (IOH) of silica particulates and polyethylene (PE) was investigated, where silica was employed as an analogue to lunar soil. The objective was to search for the optimum materials design strategy for “lunar cements” – infrastructural materials based on locally harvestable resources on the Moon. If the silica particulate size was uniform, the flexure strength of the IOH decreased quite linearly with the PE content. With a two-step size gradation of silica particulates, the flexure strength of the silica-PE IOH could be much improved, higher than that of Portland cements with only 4 wt% of PE. A threshold PE content around 6 wt% existed. Above the threshold, the PE content has only a secondary effect on the IOH flexure strength; below the threshold, the IOH flexure strength decreases abruptly. In order to further enhance the IOH strength and to reduce the binder content, this threshold value must be minimized.https://doi.org/10.1515/secm-2014-0042inorganic-organic hybridlocally harvestable resourceslunar cementsize gradation |
| spellingShingle | Chen Tzehan Chow Brian J. Qiao Yu Two-step gradation of particle size in an inorganic-organic hybrid Science and Engineering of Composite Materials inorganic-organic hybrid locally harvestable resources lunar cement size gradation |
| title | Two-step gradation of particle size in an inorganic-organic hybrid |
| title_full | Two-step gradation of particle size in an inorganic-organic hybrid |
| title_fullStr | Two-step gradation of particle size in an inorganic-organic hybrid |
| title_full_unstemmed | Two-step gradation of particle size in an inorganic-organic hybrid |
| title_short | Two-step gradation of particle size in an inorganic-organic hybrid |
| title_sort | two step gradation of particle size in an inorganic organic hybrid |
| topic | inorganic-organic hybrid locally harvestable resources lunar cement size gradation |
| url | https://doi.org/10.1515/secm-2014-0042 |
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