Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths
With methylsilsesquioxane (MSQ) aerogels synthesized by the sol-gel method as a raw material and Si-Ti sol as a binder, an alcohol-based aerogel slurry consisting of only MSQ aerogel and Si-Ti sol was prepared and coated on expanded polytetrafluoroethylene (ePTFE) to form an MSQ aerogel coating laye...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/24/7/1246 |
| _version_ | 1819086965265399808 |
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| author | Xingzhong Guo Shengchi Bai Jiaqi Shan Wei Lei Ronghua Ding Yun Zhang Hui Yang |
| author_facet | Xingzhong Guo Shengchi Bai Jiaqi Shan Wei Lei Ronghua Ding Yun Zhang Hui Yang |
| author_sort | Xingzhong Guo |
| collection | DOAJ |
| description | With methylsilsesquioxane (MSQ) aerogels synthesized by the sol-gel method as a raw material and Si-Ti sol as a binder, an alcohol-based aerogel slurry consisting of only MSQ aerogel and Si-Ti sol was prepared and coated on expanded polytetrafluoroethylene (ePTFE) to form an MSQ aerogel coating layer, followed by low-temperature heat treatment. The effect of Si-Ti sol content on the microstructure of the MSQ aerogel coating layer was investigated, and the properties of a typical MSQ aerogel-layer-coated ePTFE film were evaluated. The results show that Si-Ti sol has an important role in terms of film-forming capability, surface smoothness, flexibility, and powder dropping of the MSQ aerogel coating layer. With a Si-Ti sol of 10.5 wt.% content as a binder and after heat treatment at 170 °C for 30 min, the coated ePTFE flexible thin film with a layer thickness of 30 μm shows high uniformity, integrity, and electrical insulation properties, with an elongation at break decrease over 130%, a thermal conductivity of 0.1753 W/(m·K) at 25 °C, a dielectric constant of 16.5674, and a dielectric loss of 0.06369, which can be promisingly applied in cable sheaths. |
| first_indexed | 2024-12-21T21:28:38Z |
| format | Article |
| id | doaj.art-1b32e9d738ed415aab528028c1338452 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-21T21:28:38Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-1b32e9d738ed415aab528028c13384522022-12-21T18:49:41ZengMDPI AGMolecules1420-30492019-03-01247124610.3390/molecules24071246molecules24071246Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable SheathsXingzhong Guo0Shengchi Bai1Jiaqi Shan2Wei Lei3Ronghua Ding4Yun Zhang5Hui Yang6School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-nano-porous Materials United Research Development Center, Changzhou 213100, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-nano-porous Materials United Research Development Center, Changzhou 213100, ChinaPan Asia Microvent Tech (Jiangsu) Corporation & Zhejiang University Micro-nano-porous Materials United Research Development Center, Changzhou 213100, ChinaSchool of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, ChinaWith methylsilsesquioxane (MSQ) aerogels synthesized by the sol-gel method as a raw material and Si-Ti sol as a binder, an alcohol-based aerogel slurry consisting of only MSQ aerogel and Si-Ti sol was prepared and coated on expanded polytetrafluoroethylene (ePTFE) to form an MSQ aerogel coating layer, followed by low-temperature heat treatment. The effect of Si-Ti sol content on the microstructure of the MSQ aerogel coating layer was investigated, and the properties of a typical MSQ aerogel-layer-coated ePTFE film were evaluated. The results show that Si-Ti sol has an important role in terms of film-forming capability, surface smoothness, flexibility, and powder dropping of the MSQ aerogel coating layer. With a Si-Ti sol of 10.5 wt.% content as a binder and after heat treatment at 170 °C for 30 min, the coated ePTFE flexible thin film with a layer thickness of 30 μm shows high uniformity, integrity, and electrical insulation properties, with an elongation at break decrease over 130%, a thermal conductivity of 0.1753 W/(m·K) at 25 °C, a dielectric constant of 16.5674, and a dielectric loss of 0.06369, which can be promisingly applied in cable sheaths.https://www.mdpi.com/1420-3049/24/7/1246MSQ aerogelePTFEaerogel coatingcable sheath |
| spellingShingle | Xingzhong Guo Shengchi Bai Jiaqi Shan Wei Lei Ronghua Ding Yun Zhang Hui Yang Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths Molecules MSQ aerogel ePTFE aerogel coating cable sheath |
| title | Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths |
| title_full | Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths |
| title_fullStr | Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths |
| title_full_unstemmed | Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths |
| title_short | Fabrication and Characterization of MSQ Aerogel Coating on ePTFE Thin Films for Cable Sheaths |
| title_sort | fabrication and characterization of msq aerogel coating on eptfe thin films for cable sheaths |
| topic | MSQ aerogel ePTFE aerogel coating cable sheath |
| url | https://www.mdpi.com/1420-3049/24/7/1246 |
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