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Simulation of liquid physical blowing agents
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Evaporation of blowing agent was modelled as an overall mass transfer coefficient times the difference in activity of the blowing agent in the gas foam cells versus the resin walls of the cells. Successful modelling hinged upon use of a mass transfer coefficient that decreased to near zero as the foam resin approached its gel point. Modelling on density agreed with experimental measurements
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This page is a summary of: Simulation of liquid physical blowing agents for forming rigid urethane foams, Journal of Applied Polymer Science, May 2015, Wiley,
DOI: 10.1002/app.42454.
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