Introduction to the Third International Workshop on Long-Term Thermal Performance of Cellular Plastic Insulation

摘要

Methodology for the evaluation of long-term thermal performance of cellular plastics is being developed under a collaboration of North American foam industry with the National Research Council of Canada. The mechanism of this collaboration includes a joint research project between the Society of Plastics Industryand the NRC Canada. To evaluate long-term thermal performance (LTTP) of cellular plastics the agingprocess must be accelerated. This can be done either by means of elevated temperature or by the use of thin layers of the foam. The first approach changes the permeability and solubility coefficients of different gases to such a degree that predicting the foam performance under field conditions is difficult.