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.
Shape holding behavior of four H20 foam samples. Four samples named Tg−30, Tg, Tg+30 and Tg+60 are (a) deformed to a 80% compressive strain at Tg+30 °C (b) held at specific temperatures of Tg−30 °C, Tg, Tg+30 °C and Tg+60 °C respectively for a period of two hours and (c) unloaded at Tg+30 °C.
