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2. Spray foam - Wikipedia

   en.wikipedia.org/wiki/Spray_foam

   Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...

3. 8 Home Items Under $100 That Will Lower Your Utility Bills - AOL

   www.aol.com/8-home-items-under-100-153726465.html

   Insulation Covers for Attic Stairs. Replacing spent attic insulation is one of the best ways to lower your utility bills, but that will cost you a whole lot more than $100. Don’t worry — there ...

4. Foaming agent - Wikipedia

   en.wikipedia.org/wiki/Foaming_agent

   Foaming agent. A foaming agent is a material such as a surfactant or a blowing agent that facilitates the formation of foam. A surfactant, when present in small amounts, reduces surface tension of a liquid (reduces the work needed to create the foam) or increases its colloidal stability by inhibiting coalescence of bubbles. [1]

5. Foam - Wikipedia

   en.wikipedia.org/wiki/Foam

   Foam, in this case meaning "bubbly liquid", is also produced as an often-unwanted by-product in the manufacture of various substances. For example, foam is a serious problem in the chemical industry, especially for biochemical processes. Many biological substances, for example proteins, easily create foam on agitation or aeration.

6. Vanishing spray - Wikipedia

   en.wikipedia.org/wiki/Vanishing_spray

   Vanishing spray can be clipped to a referee's waist. Vanishing spray, also known as vanishing foam, is a substance applied to an association football pitch in order to provide a temporary visual marker. It is most often used by the referee to indicate the minimum distance that the defending team may position themselves from the ball during a ...

7. Ballistic foam - Wikipedia

   en.wikipedia.org/wiki/Ballistic_foam

   The foam is used to surround aircraft fuel tanks to reduce the chance of fires caused by the penetration of incendiary projectiles. [1] Ballistic foam is a type of polyurethane foam placed in the dry bays of aircraft. Ballistic foam prevents fires, adds strength to the structure, slows down the speed of shrapnel during attacks, and offers cost ...