Journal
COMBUSTION SCIENCE AND TECHNOLOGY
Volume 190, Issue 6, Pages 1126-1140Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00102202.2018.1437727
Keywords
Graphene Oxide; Ammonium Polyphosphate; Epoxy Resins; Flame Retardant; Mechanical Properties
Funding
- fundamental research funds for the Central Universities [3142017065]
- Hebei Provincial Science and Technology Program project [17211225]
- Key Laboratory of Mine Disaster Prevention and Control in Hebei Province [KJZH2017K12]
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A modified graphene oxide (MGO) was prepared by graphene oxide, boric acid, and 3-aminopropyltriethoxysilane in an ethanol aqueous solution using ultrasonic agitation. Its structure was characterized by the Fourier transform infrared Fourier transform infrared, X-ray diffraction, and elemental analysis. Subsequently, MGO as a synergist, accompanied with ammonium polyphosphate (APP), was incorporated into epoxy resins (EP) to improve its mechanical properties and flame retardancy. The flame retardancy of EP/APP/MGO nanocomposites was investigated by the limiting oxygen index (LOI) test, the UL 94 test and the cone calorimeter test (CCT). The LOI value of EP/APP/MGO nanocomposites reached 28.8% by addition of 15wt% of flame retardant, and its UL 94 test reached V-0 rating. The CCT results revealed that MGO could significantly enhance flame retardant properties of EP/APP/MGO nanocomposites because of the denser structure of char residue. Here, MGO also enhanced the mechanical properties of EP.
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