|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Polystyrene Flame-retardant Composite
||Antonio Munhoz, Jaine Soares, Mariana Gutierrez, Pedro Barros, Terezinha Jocelen Masson, Leila Figueiredo de Miranda, Nelson Batista de Lima, Leonardo Gondim de Andrade e Silva, Francisco Rolando Valenzuela Diaz, Pedro Guilherme Gomes de Morais, Caroline Valadăo Pacheco, Renato Meneghetti Peres
|On-Site Speaker (Planned)
Polystyrene (PS), a commodity polymer is used in several commercial products which must be flame retarded. One option to improve the thermal properties of PS is the production of nanocomposites. Ceramics materials due low thermal conductivity improve the flame-retardant properties of composites. Although reduced flammability has been demonstrated for these nanocomposites, a fundamental understanding of the reduced flammability properties is essential for nanocomposites to succeed as flame retardant. In this work we report synthesis of alpha-alumina from pseudoboehmite and the use of this material to produce a PS composite. The X-ray diffraction data of the synthesized alpha-alumina revealed high quality nanoparticles. The differential thermal analysis and the thermogravimetric analysis of the composite shows an increase in the decomposition temperature. The mechanical properties of the composite were also evaluated. The results showed an increase in the hardness and the flexural strength for the PS-alpha alumina composites containing 4wt% of alpha alumina.