Figure 4.
Char layer surface of phenolic foam after combustion: (a) O-PF; (b) GC-PF (LMG content 50%); and (c) ceramization of GC-PF.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.