High temperature ablation of kaolinite layered silicate/phenolic resin/asbestos cloth nanocomposite.
The successful return of re-entry space vehicle, which is subjected to severe aerodynamic heating, is largely accompanied by some provisions to reduce the heat transfer to the structure. Heat shield is the best protection means which undergoes physical, chemical, and mostly endothermal transformations. The objective of this work is to investigate the ablating, charring, and thermal degradation behaviour of heat shield resol-type phenolic resin/kaolinite/asbestos cloth nanocomposite by oxyacetylene flame test with an external heat flux of 8 x 10(9)W/m(2) and 3000 K hot gas temperature and thermal analyzer techniques. Kinetic parameters of thermal degradation and temperature distribution at the back surface of the nanocomposite heat shield were determined and compared with that of composite counterpart.
Bahramian
Ahmad Reza
AR
Polymer Engineering Group, Chemical Engineering Department, Faculty of Engineering, Tarbiat Modares University, PO Box 14115-143, Tehran, Iran.
Kokabi
Mehrdad
M
Famili
Mohammad Hossein Navid
MH
Beheshty
Mohammad Hossein
MH
D001194:Asbestos / Q000737:chemistry; D006358:Hot Temperature; D007616:Kaolin / Q000737:chemistry*; D007700:Kinetics; D008962:Models, Theoretical; D053761:Nanocomposites / Q000737:chemistry*; D019800:Phenol / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D013784:Textiles / Q000592:standards*; D014961:X-Ray Diffraction
D017640:Silicates; D001194:Asbestos; D007616:Kaolin; D019800:Phenol