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About CCA!
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Voiceover
A viscous liquid containing a polyether polyol, a blowing agent, a silicone surfactant, and a catalyst is mixed with a second liquid contains a polyfunctional isocyanate. The polyol and the polyfunctional isocyanate react to form polyurethane. The blowing agent adds a gas to the mixture to produce a foam. Because the reactants are polyfunctional, there is a high degree of cross-linking in the polyurethane. This causes the foam to become rigid after cooling.
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Design, Text, and Demonstration:
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Kristin Johnson
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University of Wisconsin - Madison, Madison, WI 53706
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Video production, editing, and voice:
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Jerrold J. Jacobsen
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University of Wisconsin - Madison, Madison, WI 53706
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Greg Minix
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University of Wisconsin - Madison, College of Engineering, Madison, WI 53706
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Michael Killips
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University of Wisconsin - Madison, School of Nursing, Madison, WI 53706
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