Effect of NiFe2O4@Graphene in Intumescent Flame Retarded Polylactic Acid Composites
作者：Shan Xueying, Han Ji, Jiang Kuanyu, Li Jinchun*
關鍵字：synergistic effect；thermal stability；flame retardancy
論文來源：期刊
具體來源：Polymer Composites
發表時間：2019年
NiFe2O4 nanoparticles loaded on graphene layers (NiFe2O4@GR) was prepared by the hydrothermal method, and it first combined with intumescent flame retardant (IFR) consisting of polyphosphate (APP) and pentaerythritol (PER) was used to prepare polylactic acid (PLA) composites. Effect of NiFe2O4@GR and IFR on thermal stability and flame retardancy of PLA was investigated. LOI value of all the PLA composites increased, and the results of UL-94 tests passed V0 ratings. With the presence of NiFe2O4@GR in intumescent flame retarded PLA composites, the initial degradation temperature had a big increase and char residue increased apparently. The ratio of graphite crystalline carbon was increased. The denser and more intumescent char layer of was formed. In addition, NiFe2O4@GR had the reinforcing effect for PLA. Therefore, NiFe2O4@GR and IFR had a good synergistic effect in improving thermal stability and flame retardancy of PLA.