Transportation Industry
Blowing Foam For Insulation Goes Eco-Friendly
Transport Topics, January, 2008 by Strah, Thomas M
What do a can of deodorant and a modern refrigerated trailer have in common? A bit of chemistry and more than a few pages of clean-air regulations, that's what.
Back when aerosol spray was blamed for blowing a continent-size hole in the ozone layer of the atmosphere, governments around the world banned the chlorofluorocarbon in me aerosol's propellant gas - its chlorine component is the destructive stuff.
This also had a major effect on the refrigeration and air-conditioning industries, which not only relied on the excellent chilling properties of CFCs, but also their role in creating form-fitting insulating material.
CFCs were replaced by hydrochlorofluorocarbons, which contained much less chlorine, but that was only a transition. The U.S. Environmental...
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