Silane modification on mesoporous silica coated carbon nanotubes for improving compatibility and dispersity in epoxy matrices
| Autor: | Chiu Wen Lee, Yen Sen Liao, Li Ming Chen, Wei Hsiang Wang, Min Hua Chung, Ping Feng Yang, Hong Ping Lin |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Composite number Carbon nanotube Dynamic mechanical analysis Epoxy engineering.material Mesoporous silica Silane law.invention Silanol chemistry.chemical_compound Coating chemistry Mechanics of Materials law visual_art Ceramics and Composites engineering visual_art.visual_art_medium Composite material |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 78:1-9 |
| ISSN: | 1359-835X |
| Popis: | A simple synthetic method for placing a mesoporous silica coating on multi-wall carbon nanotubes (CNTs@MS) was developed to improve the surface compatibility with regard to a polar epoxy matrix. In addition, the mesoporous silica shell with silanol groups on the CNTs provides a platform to attach silane molecules (e.g. 3-glycidoxypropyltrimethoxysilane, GPTMS) that enable the CNTs@MS to be incorporated into the epoxy matrix at a content of up to 20 wt.%. The viscosities of the CNTs@MS- and GPTMS-modified-CNTs@MS–epoxy composites are much lower than that of the CNTs–epoxy, and then the voids in the GPTMS-modified-CNTs@MS–epoxy composites are most significantly reduced. The effects of the CNTs@MS and GPTMS-modified CNTs@MS on the mechanical and thermal properties of the epoxy composite are investigated. The results show that the GPTMS-modified CNTs@MS improved the filler–epoxy matrix interaction, and has better compatibility in epoxy than the CNTs@MS. As the surface compatibility and interaction strength increase in the epoxy matrix, the enhancement in storage modulus, thermal conductivity and reduction in the coefficient of thermal expansion are in the following order: GPTMS-modified CNTs@MS > CNTs@MS ≫ CNTs. |
| Databáze: | OpenAIRE |
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