| abstract |
The present invention relates to orthopedic rigid polyurethane foam and a method for preparing the same. More specifically, 3 to 8 polyfunctional polyol is reacted to methylene diisocyanate or modified methylene diisocyanate at a temperature range of 40 to 80 ° C. A mixed polyol prepared by adding a blowing agent, an amine catalyst, a filler, and an antimicrobial treatment agent and / or a flavoring agent to a partial prepolymer having an NCO group content of 11 to 25% and a polyol prepared by adding 1; Polyurethane foam prepared by mixing at a weight ratio of 1 to 2 has a hardness (C-type) of 90 to 95%, a density of 0.20 to 0.35 kg / m 3, a compressive strength of 7 kg / cm 2 or more, and a hygroscopicity of 1 ±. It relates to an orthopedic rigid polyurethane foam having a characteristic of 0.1%, 96% or more of dimensional stability and excellent radiation transmittance, and a manufacturing method thereof. |