title: High temperature ablation of kaolinite layered silicate/phenolic resin/asbestos cloth nanocomposite.
abstract: 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.
authors.affiliation: Polymer Engineering Group, Chemical Engineering Department, Faculty of Engineering, Tarbiat Modares University, PO Box 14115-143, Tehran, Iran.
authors.forename: Ahmad Reza
authors.initials: AR
authors.lastname: Bahramian
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Kokabi
authors.forename: Mohammad Hossein Navid
authors.initials: MH
authors.lastname: Famili
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Beheshty
mesh_terms: 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
chemical_list: D017640:Silicates; D001194:Asbestos; D007616:Kaolin; D019800:Phenol