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What is Spray Polyurethane Foam?

Spray polyurethane foam (SPF) is a spray-applied material that is widely used to insulate buildings and What is Spray Polyurethane Foam? seal cracks and gaps, making the building more energy-efficient and comfortable. How Does SPF Work? cContractors combine two liquids to initiate a chemical reaction that creates foam. These liquids arrive at the job site in separate containers and are typically referred to as the "A" side and "B" side. Just like sodium and chlorine compounds combine to form a new substance - table salt – the "A" side and "B" side ingredients mix together to form a third, completely different material. The "A" side is commonly a mixture of methylene diphenyl diisocyanate (MDI) and polymeric methylene diphenyl diisocyanate (PMDI). The "B" side is typically a polyol and smaller amounts of other liquids: MDI is widely used in the production of rigid polyurethane foams for home or refrigerator insulation, but is also used in the production of some footwear, sports equipment, Polyols react with MDI to make foam. Polyols are a building block of polyurethane. Some SPFS replace a portion of their polyols with recycled plastic bottles or renewable polyols made with soybean or castor oil. Catalysts speed up the chemical reaction. There are many different catalysts with numerous industrial applications, from reducing car emissions to making paper. paints and glues. Blowing Agents help the foam expand. Some SPFS use water as a reactive blowing agent, while others use a non-reactive type. After SPF is applied and cured, it is considered to be relatively inert, according to EPA. This means the chernicals are finished reacting. liquids, much like dish Surfactants lower the surface tension soap does to dissolve grease. Flame Retardants increase the fire resistance of the finished product to help protect homeowners and other building occupants. SPF's Many Common Uses and Benefits Wall Insulation Maintains indoor air temperature, seals cracks and improves energy efficiency Sealant Roofing Protects against moisture, improves energy efficiency and increases wind resistance Minimizes air leaks, reduces sound, seals windows and doors, and helps keep out insects, rodents and allergens Manufactured Homes Containers Insulates tanks or vessels for ligquids that need to maintain a consistent temperature Warehouses Serves as an adhesive for wall and Insulates refrigerated warehouses, meat and dairy processing plants, and distribution centers for frozen foods and fresh produce ceiling panels Spray Foam Coali tion - www.whysprayfoam.org Saurce: Argonne Nakonal Lab, U.S. EPA, Spray Foem Coalition and Spray Polyurethane Foam Alance.

What is Spray Polyurethane Foam?

shared by Clemens on Oct 16
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Spray polyurethane foam (SPF) is a spray-applied material that is widely used to insulate buildings and seal cracks and gaps, making the building more energy-efficient and comfortable. To learn more, ...

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