Norton, F. J., "Diffusion of Chloroflourocarbon Gases in Polymer Films and Foams," Journal of Cellular Plastics, pp. 300 to 315 (Sept./Oct. 1982).
5.
Baer, E., Engineering Design for Plastics , Reinhold Publishing Corp., pp. 1025 to 1050 ( 1964).
6.
Reitz, D. W., A Basic Study of Gas Diffusion in Foam Insulation, M.S. MIT, 128 pp. (1983).
7.
Norton, F. J., "Thermal Conductivity and Life of Polymer Foams," Journal of Cellular Plastics, pp. 23 to 37 (1967).
8.
Brandreth, D. A. and Ingersal, H. G., "Accelerated Aging of Rigid Polyurethane Foams," Journal of Cellular Plastics, pp. 235-238 (July/Aug. 1980).
9.
Ball, G. W., Henley, W. G., and Walker, M. G., "The Thermal Conductivity on Rigid Urethane Foams," Journal of Cellular Plastics, pp. 66-68 (Mar./Apr. 1970).
10.
Ball, G. W., Henley, W. G., and Partington, J. B., "The Thermal Conductivity of Isocyanate— Based Rigid Cellular Plastics Performance in Practice," European Journal of Cellular Plastics, pp. 50 to 63 (Jan. 1978).
11.
Sinofsky, M., Property Measurement and Thermal Performance Prediction of Foam Insulation, M.S. MIT (Jan. 1984).
12.
Lee, W. M. and Brown, C. N., "Gas Permeability Determinations in Urethane Foams," Journal of Thermal Insulation, V-6, pp. 174-182 (1983).
13.
Young, G. P., Dow Chemical Company Private Communications.