The effect of boehmite (BM) as a synergistic agent with aluminium diethyphosphinate (AlPi) on the flame retardancy and thermal degradation of glass fiber-reinforced(GFR) polyamide 6T-66 were fully investigated.The results demonstrated that standard specimens passed vertical burning UL-94 0.8mm V-1 flammability rating,and the limiting oxygen index (LOI) was increased by 20.8% to 45.3% when the loading amount of AlPi was 14wt%.The specimens passed V-0 when the loading amount of AlPi was further increased to 16wt% or when 1wt% boehmite was added,which indicated synergistic action between AlPi and BM.Thermogravimetric analysis (TGA) revealed that adding BM facilitated the char formation during thermo-oxidative degradation,which may attribute to the above synergistic effect.Cone calorimeter test was applied to evaluate the fire behaviors,which demonstrated that AlPi combined with BM efficiently reduced the fire behavior parameters such as heat release rate (HRR) and total heat release (THR).
Zhou Guiyang, Jia Yanyu, Deng Hangjun, Yin Hong
. Synergistic effect of BM/AlPi on the flame retardant property of GFR polyamide 6T-66[J]. New Chemical Materials, 2020
, 48(9)
: 123
-127
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.026
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