VIPs have been regarded as one of the most super heat insulation material used in buildings, refrigerators, freezers
and water heaters etc. Most studies focus on how to maintain the appropriate vacuum inside the panel to provide a
better thermal performance and a long service life. Lab scale experiments, analytical and numerical measures have
been simultaneously used to get the basic data of gas and water vapour permeation through barrier films in order to
enhance the film’s anti-permeation ability while decreasing the thermal bridge effect. Recently more and more
researchers pay attention to outgssing from the core material and high efficient getters. In this paper, specific
outgssing rate of the open cell PU foam was studied experimentally, in which a wider temperature range and baking
effect were studied in order to provide basic datas to meet the requirements of different application fields. The
experimental outgassing research can help to determine the optimal quantity of getters inserted into VIPs and
improve the core material microstructures.