abstract |
The present invention pertains to: a rigid polyurethane foam containing a 4th generation hydrofluoroolefin (HFO)-based blowing agent and a hydrofluoroether nucleating agent, preferably methoxynonafluorobutane; and a method for manufacturing same. A rigid polyurethane foam containing the above components has reduced cell size, improved mechanical strength, and excellent thermal insulation performance compared to conventional polyurethane foams. |