[1] YOU ZHOU, XIU LIU, FANG WANG. Effect of metal oxides on fire resistance and char formation of intumescent flame retardant coating. Journal of Inorganic Materials, 29, 1267-1272(2014).

[2] XIAN-FENG CHEN, CHU-YUAN HUANG, YONG-QIAN SHI. MoO₃-ZrO₂ solid acid for enhancement in the efficiency of intumescent flame retardant. Powder Technology, 344, 581-589(2019).

[3] ZHAO-LU QIN, DING-HUA LI, RONG-JIE YANG. Preparation of ammonium polyphosphate coated with aluminium hydroxide and its application in polypropylene as flame retardant. Journal of Inorganic Materials, 30, 972-978(2015).

[4] LEI YE, YUN-JIE ZHANG, SHU-HONG WANG. Synergistic effects and mechanism of ZnCl₂ on intumescent flame-retardant polypropylene. Journal of Thermal Analysis and Calorimetry, 115, 1065-1071(2014).

[5] BETTINA DITTRICH, KAREN-ALESSA WARTIG, DANIEL HOFMANN. Flame retardancy through carbon nanomaterials: carbon black, multiwall nanotubes, expanded graphite, multi-layer graphene and graphene in polypropylene. Polymer Degradation and Stability, 98, 1495-1505(2013).

[6] YIN-LONG SHEN, WEI-GUANG GONG, BAI-CUN ZHENG. Synergistic effect of Ni-based bimetallic catalyst with intumescent flame retardant on flame retardancy and thermal stability of polypropylene. Polymer Degradation and Stability, 129, 114-124(2016).

[7] YAN-SHAN GAO, YU ZHANG, R WILLIAMS GARETH. Layered double hydroxide-oxidized carbon nanotube hybrids as highly efficient flame retardant nanofillers for polypropylene. Scientific Report, 6, 35502(2016).

[8] YA-PENG HU, XIANG-MEI WANG, JUAN LI. Regulating effect of exfoliated clay on intumescent char structure and flame retardancy of polypropylene composites. Industrial & Engineering Chemistry Research., 55, 5892-5901(2016).

[9] YA-JUN CHEN, LI-FENG XU, XING-DE WU. The influence of nano ZnO coated by phosphazene/triazine bi-group molecular on the flame retardant property and mechanical property of intumescent flame retardant poly (lactic acid) composites. Thermochimica Acta, 679, 178336(2019).

[10] YUAN LIU, QI WANG. Catalytic action of phospho-tungstic acid in the synthesis of melamine salts of pentaerythritol phosphate and their synergistic effects in flame retarded polypropylene. Polymer Degradation and Stability, 91, 2513-2519(2006).

[11] SHENG-JIAO CHEN, JUAN LI, YING-KE ZHU. Increasing the efficiency of intumescent flame retardant polypropylene catalyzed by polyoxometalate based ionic liquid. Journal of Materials Chemistry A, 1, 15242-15246(2013).

[12] CHENG-LE WANG, JUAN LI, PENG DING. Roles of supermolecule structure of melamine phosphomolybdate intumescent flame retardant polypropylene composites. Journal of Analytical and Applied Pyrolysis, 119, 139-146(2016).