Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites
It is very important to develop a new method of preparing high-performance liquid silicone rubber-reinforcing filler. Herein, the hydrophilic surface of silica (SiO<sub>2</sub>) particles was modified by a vinyl silazane coupling agent to prepare a new type of hydrophobic reinforcing fil...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/5/1224 |
| _version_ | 1797614534574211072 |
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| author | Yulong Zhang Wei Liu Qiang Zhou Yiting Meng Ye Zhong Jing Xu Chuan Xiao Guangpu Zhang Yanan Zhang |
| author_facet | Yulong Zhang Wei Liu Qiang Zhou Yiting Meng Ye Zhong Jing Xu Chuan Xiao Guangpu Zhang Yanan Zhang |
| author_sort | Yulong Zhang |
| collection | DOAJ |
| description | It is very important to develop a new method of preparing high-performance liquid silicone rubber-reinforcing filler. Herein, the hydrophilic surface of silica (SiO<sub>2</sub>) particles was modified by a vinyl silazane coupling agent to prepare a new type of hydrophobic reinforcing filler. The structures and properties of modified SiO<sub>2</sub> particles were confirmed using Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectrometer (XPS), specific surface area and particle size distribution and thermogravimetric analysis (TGA), the results of which demonstrated that the aggregation of hydrophobic particles is greatly reduced. Additionally, the effects of the vinyl-modified SiO<sub>2</sub> particle (<i>f</i>-SiO<sub>2</sub>) content on the dispersibility, rheology, and thermal and mechanical properties of liquid silicone rubber (SR) composites were studied for application toward high-performance SR matrix. The results showed that the <i>f</i>-SiO<sub>2</sub>/SR composites possessed low viscosity and higher thermal stability, conductivity, and mechanical strength than of SiO<sub>2</sub>/SR composites. We believe that this study will provide ideas for the preparation of high-performance liquid silicone rubber with low viscosity. |
| first_indexed | 2024-03-11T07:12:57Z |
| format | Article |
| id | doaj.art-b23295bd01fa48c3ba49ee4fe25ce1fc |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T07:12:57Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-b23295bd01fa48c3ba49ee4fe25ce1fc2023-11-17T08:27:52ZengMDPI AGPolymers2073-43602023-02-01155122410.3390/polym15051224Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber NanocompositesYulong Zhang0Wei Liu1Qiang Zhou2Yiting Meng3Ye Zhong4Jing Xu5Chuan Xiao6Guangpu Zhang7Yanan Zhang8China North Industry Advanced Technology Generalization Institute, Beijing 100089, ChinaChina North Industry Advanced Technology Generalization Institute, Beijing 100089, ChinaOrdnance Science and Research Academy of China, Beijing 100089, ChinaNational Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, ChinaChina North Industry Advanced Technology Generalization Institute, Beijing 100089, ChinaChina North Industry Advanced Technology Generalization Institute, Beijing 100089, ChinaOrdnance Science and Research Academy of China, Beijing 100089, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, ChinaNational Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210014, ChinaIt is very important to develop a new method of preparing high-performance liquid silicone rubber-reinforcing filler. Herein, the hydrophilic surface of silica (SiO<sub>2</sub>) particles was modified by a vinyl silazane coupling agent to prepare a new type of hydrophobic reinforcing filler. The structures and properties of modified SiO<sub>2</sub> particles were confirmed using Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectrometer (XPS), specific surface area and particle size distribution and thermogravimetric analysis (TGA), the results of which demonstrated that the aggregation of hydrophobic particles is greatly reduced. Additionally, the effects of the vinyl-modified SiO<sub>2</sub> particle (<i>f</i>-SiO<sub>2</sub>) content on the dispersibility, rheology, and thermal and mechanical properties of liquid silicone rubber (SR) composites were studied for application toward high-performance SR matrix. The results showed that the <i>f</i>-SiO<sub>2</sub>/SR composites possessed low viscosity and higher thermal stability, conductivity, and mechanical strength than of SiO<sub>2</sub>/SR composites. We believe that this study will provide ideas for the preparation of high-performance liquid silicone rubber with low viscosity.https://www.mdpi.com/2073-4360/15/5/1224surface modificationsilicathermal stabilitythermal conductivitymechanical properties |
| spellingShingle | Yulong Zhang Wei Liu Qiang Zhou Yiting Meng Ye Zhong Jing Xu Chuan Xiao Guangpu Zhang Yanan Zhang Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites Polymers surface modification silica thermal stability thermal conductivity mechanical properties |
| title | Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites |
| title_full | Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites |
| title_fullStr | Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites |
| title_full_unstemmed | Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites |
| title_short | Effects of Vinyl Functionalized Silica Particles on Thermal and Mechanical Properties of Liquid Silicone Rubber Nanocomposites |
| title_sort | effects of vinyl functionalized silica particles on thermal and mechanical properties of liquid silicone rubber nanocomposites |
| topic | surface modification silica thermal stability thermal conductivity mechanical properties |
| url | https://www.mdpi.com/2073-4360/15/5/1224 |
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