The effect of organofluorine additives on the morphology, thermal conductivity and mechanical properties of rigid polyurethane and polyisocyanurate foams. (January 2022)

• Record Type: Journal Article
• Authors: Brondi, Cosimo; Maio, Ernesto Di; Bertucelli, Luigi; Parenti, Vanni; Mosciatti, Thomas
• Is Part Of: Journal of cellular plastics. Volume 58:Number 1(2022)
• Page Start: 59
• Page End: 102
• Publication Date: 2022-01
• Subjects: Polyurethane -- polyisocyanurate -- liquid blowing agents -- liquid organofluorine additives -- thermal insulation -- mechanical properties; Plastic foams -- Periodicals; 668.493
• DOI: 10.1177/0021955X20987152
• Languages: English
• ISSNs: 0021-955X

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.