The effect of organofluorine additives on the morphology, thermal conductivity and mechanical properties of rigid polyurethane and polyisocyanurate foams
Cosimo Brondi, Ernesto Di Maio, Luigi Bertucelli, Vanni Parenti, Thomas Mosciatti
Abstract
This study investigates the effect of liquid-type organofluorine additives (OFAs) on the morphology, thermal conductivity and mechanical properties of rigid polyurethane (PU) and polyisocyanurate (PIR) foams. Foams were characterized in terms of their morphology (density, average cell size, anisotropy ratio, open cell content), thermal conductivity and compressive as well as flexural properties. Based on the results, we observed that OFAs efficiently reduced the average cell size of both PU and PIR foams, leading to improved thermal insulating and mechanical properties.
Topics & Concepts
Materials sciencePolyurethaneComposite materialThermal conductivityMorphology (biology)Flexural strengthAnisotropyThermalCompressive strengthConductivityCell sizeChemistryCell biologyPhysicsGeneticsPhysical chemistryMeteorologyQuantum mechanicsBiologyPolymer composites and self-healingPolymer Foaming and CompositesPolymer Nanocomposites and Properties