Study on Methods to Enhance Properties of Polyurethane Foam Made of New Blowing Agents

摘要

Polyurethane foams are one of best insulators used for various kinds ofindustries. Blowing agents expands polyurethane into a foam materialand give it good insulating capability. Conventional blowing agentssuch as CFC-11, HCFC-141b etc., have been replaced with new oneswhich render no potency to the depletion of the ozone layer and lesspotency to global warming. However, these eco-friendly foamingagents have a disadvantage of high thermal conductivity. In this paper,we summarize factors affecting thermal insulating performance ofpolyurethane foam and introduce the effective methods to enhanceproperties of polyurethane foam made of eco-friendly blowing agents.