Unique DIY craft from cement and styrofoam!: | 5-Minute Crafts

Proper ways to use expanding foam in repairs! | 5-Minute Crafts Play

Watch what happens when two liquids combine to form solid foam! 🧪 This is a polyurethane rigid foam system — made by mixing polyether polyol and isocyanate, which instantly react together. The reaction is exothermic, producing heat and gas that form tiny trapped bubbles, causing the material to expand rapidly in volume and harden into foam. 🔬✨ A fascinating look at chemistry in action — showing how everyday materials like insulation foam and cushions are made! #tool #scienceexperiment | Next W

More details on the new Tigard Styrofoam recycling operation: https://bit.ly/2Hi2swd | FOX 12 Oregon