Recycling of carbon fiber composites in carbon-bonded alumina refractories
| Autor: | Miriam Bach, Horst Biermann, Patrick Gehre, Christos G. Aneziris |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Carbon fiber reinforced polymer chemistry.chemical_classification Materials science Silicon Process Chemistry and Technology chemistry.chemical_element 02 engineering and technology Polymer Thermal treatment 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry 0103 physical sciences Oxidizing agent Materials Chemistry Ceramics and Composites Fiber Composite material 0210 nano-technology Porosity |
| Zdroj: | Ceramics International. 46:12574-12583 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.02.020 |
| Popis: | This study investigates the feasibility of recycling carbon fiber reinforced polymer (CFRP) composites in carbon-bonded alumina refractories. For this purpose, different procedures for pretreatment and separation of recyclable CFRP composites were examined. The influence of pretreatment, dimensions and condition of the CFRPs on physical, mechanical, and thermo-mechanical properties of carbon-bonded alumina refractories were evaluated. The CFRP fractions were classified by sieving and partly treated by means of mechanical and thermal methods. The mechanical approach describes a simple method to obtain short fibers along with a reusable fiber dust. By thermal treatment in an oxidizing atmosphere, the carbon fibers can be easily separated from the polymer matrix. Carbon-bonded alumina bricks of industry standard with CFRPs of different length and treatment and partly silicon as antioxidant were produced and compared to the respective reference without CFRPs. The addition of recycled CFRPs to carbon-bonded alumina refractories resulted in a modified microstructure consistent with open porosity and altered mechanical properties at room temperature. The microstructural change in the refractory material provoked by recycled CFRPs |
| Databáze: | OpenAIRE |
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