Thermal Degradation Process of Resol Type Phenolic Matrix/Kaolinite Layered Silicate Nanocomposite

The thermal protection of spacecrafts during hypersonic re-entry into the Earth's atmosphere by ablative composite and nanocomposite has been the subject of intensive investigation in recent years. An evaluation has been made on the advantages of relative performances of various ablation materi...

Full description

Saved in:
Bibliographic Details
Published in:Iranian polymer journal 2007-06, Vol.16 (6), p.375-387
Main Authors: Bahramian, Ahmad Reza, Kokabi, Mehrdad, Beheshty, Mohammad Hossein, Famili, Mohammad Hossein Navid
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal protection of spacecrafts during hypersonic re-entry into the Earth's atmosphere by ablative composite and nanocomposite has been the subject of intensive investigation in recent years. An evaluation has been made on the advantages of relative performances of various ablation materials which is based on the thermal degradation mechanism and thermal stability of these materials. The objective of this work is to investigate the effect of kaolinite nanocrystal on the thermal degradation of resol-type phenolic/asbestos nanocomposite during pyrolysis using thermogravimetric analysis and to compare the results with that of the phenolic/asbestos composite. Thermal degradation and char forming mechanisms could be obtained from parametric adjustments of the process model to the thermogravimetric experimental data. The results of this work are the kinetic parameters of thermal degradation, i.e., the activation energy, frequency factors, and degree of thermal degradation which are employed to clarify the degradation mechanism.
ISSN:1026-1265