... is an environment-friendly packaging material. When used in packaging, a mixture of two kinds of chemical liquid is filled into a polyethylene bag in an appropriate proportion. High quality PU foams are generated from this mixture through a chemical reaction and expansion. Operators select the foaming bag size...

...Wenjuan Wang, MSc; Hongyu Ma, PhD; Hui Xue, MSc; Enjie Ding, PhD For pellistor methane sensors, the amount of heat generated by methane combustion reaction is lost to ambient atmosphere through its semi-closed packaging at high working temperature. In order to minimise such heat loss, a new...