| Effect of Lithium Carbonate on Ceramic Properties of Fluorophlogopite/Silicone Rubber Compositesposites |
| Received:December 31, 2019 Revised:December 31, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.8.0589 |
| Key Words: ceramifiable silicone rubber composite；fluorophlogopite；lithium carbonate；fluxing agent； ceramic property |
| Author Name | Affiliation | E-mail | | WANG Yanlin | South China University of Technology | 413326898@qq.com | | LAI Xuejun | South China University of Technology | | | LI Hongqiang | South China University of Technology | | | ZENG Xingrong* | South China University of Technology | psxrzeng@scut.edu.cn |
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| Abstract: |
| Ceramifiable silicone rubber composites were prepared by using fluorophlogopite as ceramic filler and lithium carbonate as fluxing agent，and the effect of lithium carbonate content on the ceramic properties of fluorophlogopite/silicone rubber composites was investigated. When the lithium carbonate content was 3 phr，the comprehensive performance of fluorophlogopite/silicone rubber composites was the best. When fluorophlogopite/silicone rubber composites were treated at 1 000 ℃ for 1 h，the three-point flexural strength of the obtained ceramic reached 3. 57 MPa. SEM and XRD results showed that lithium carbonate produced liquid phase which could bond fluorophlogopite and silica together and take part in the eutectic reaction with fluorophlogopite to produce LiAl（SiO3）2 crystals at 1 000 ℃，which improved the ceramic properties of fluorophlogopite/silicone rubber composites. |
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