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Polyisocyanurate

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Polyisocyanurate insulation boards

Polyisocyanurate is a thermoset plastic.^[1] It is also called PIR, polyiso, or ISO. It is usually made as a foam. It is used as rigid thermal insulation. It is similar to polyurethane (PUR) except that the proportion of methylene diphenyl diisocyanate is higher and a polyester-derived polyol is used in the reaction instead of a polyether polyol. Catalysts and additives used are also different from those used in PUR.

References

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↑ Building Science Corporation (January 2007). "Guide to Insulating Sheathing" (PDF). p. 6.^{[permanent dead link]}

Other websites

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Wikimedia Commons has media related to Polyisocyanurate insulation boards.

Polyisocyanurate Insulation Manufacturers Association Archived 2006-02-08 at the Wayback Machine
Polyisocyanurate Insulation energy savings, by Center for the Polyurethanes Industry Archived 2008-09-23 at the Wayback Machine

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