Review on Evaluation of properties of carbon phenolic composite structure using gas chromatography for analysis of thermal performance

2nd International Conference on Advancements in Aeromechanical Materials for Manufacturing

航空航天工程;材料科学;机械制造

Gupta, M Satyanarayana^1 ; Jha, Ekta^1

Aeronautical Department, MLR Institute of Technology, Dundigal, Hyderabad

500043, India^1

关键词: Aerospace structure;    Loading condition;    Manufacturing process;    On-line cure monitoring;    Pyrolysis gas chromatography;    Resin matrix composites;    Thermal evaluations;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/455/1/012041/pdf
DOI  :  10.1088/1757-899X/455/1/012041

来源: IOP

【 摘 要 】

Carbon-phenolic composites are meant for heat protection of the aerospace structures like aircraft skins, nozzles and heat shields during the aerodynamics loading conditions. Phenolic resin matrix composites are used as ablative liners to resist thermal and erosive environment. The manufacturing process of Carbon phenolic composite structure require curing. During the curing of phenolic matrix components, methylol-phenol and water are evolved as by-products due to condensation polymerization process either in the presence of heat/hardeners. In order to obtain void free component, it is required to remove the by-products by curing the component simultaneously under heat, vacuum and pressure. Therefore autoclave-curing process is the most suitable process for curing of the phenolic resin. In this review paper, On-line cure monitoring of Carbon-Phenolic Composite Structures by Gas chromatography for wet lay ups and prepreg based components has been studied. Heat of reaction and the volume of chemical species evolved under aerodynamic heating are measured by Pyrolysis gas chromatography (Py-GC) and thermo gravimetry (TG), which will be used as inputs for thermal evaluation of the structure. Properties of carbon Phenolic is estimated through this study. USIM software used to visualize properties of surrounding air and carbon phenolic structure.