STP1116: CFC Blowing Agents Substitutes — A Status Report

    Zwolinski, LM
    Technical SupervisorGroup LeaderResearch Manager, Allied-Signal Inc., Buffalo, NY

    Knopeck, GM
    Technical SupervisorGroup LeaderResearch Manager, Allied-Signal Inc., Buffalo, NY

    Shankland, IR
    Technical SupervisorGroup LeaderResearch Manager, Allied-Signal Inc., Buffalo, NY

    Pages: 8    Published: Jan 1991


    Abstract

    Rapidly moving events at the national and global levels mean a virtual elimination of chlorofluorocarbons (CFC) as insulation foam blowing agents by the year 2000. There have been a number of more environmentally acceptable substitutes proposed for CFCs. As replacements for CFC-11, HCFC-123 and 141b have received most attention, while HCFC-22 and HFC-134a have been considered as CFC-12 substitutes.

    This paper reports on the progress made to critically evaluate these substitute materials in rigid polyurethane and polyisocyanurate insulating foams. The processing, industrial hygiene, and final foam performance of the substitutes are emphasized. The path to commercialization of HCFC-141b is presented in some detail.

    Keywords:

    Thermal conductivity, polyurethane foam, polyisocyanurate foam, chlorofluorocarbon, hydrochlorofluorocarbon, insulating gases


    Paper ID: STP16349S

    Committee/Subcommittee: C16.30

    DOI: 10.1520/STP16349S


    CrossRef ASTM International is a member of CrossRef.