Solstice Liquid Blowing Agent
(LBA), is a highly efficient insulator and has an ultra-low global-warming-potential (GWP) of 1, which is 99.9 percent lower than the blowing agents
it replaces and equal to carbon dioxide.
A new process using dry ice as physical blowing agent
has been developed at IKV .
Honeywell said that Solstice LBA is a next-generation blowing agent
with a global warming potential of 1, significantly lower than previous-generation hydrofluorocarbon blowing agents
An alternative to hydrocarbons The non-flammable liquid blowing agent
will provide customers with an alternative to hydrocarbons and traditional hydrofluorocarbons (HFCs).
In 2006, Honeywell introduced its low-GWP portfolio, which is based on hydrofluoroolefin (HFO) technology, and last year it commercialised HFO-1234ze, a low-GWP gaseous blowing agent
for one-component foam in Europe.
There is one obstacle, however, according to Roland Loh, a global applications specialist for plastic foam manufacturer Owens Coming and principal investigator in the company's search for environmentally benign nanocomposite foam products, and that is one particular property of C[O.sub.2]: "Carbon dioxide is a low-cost blowing agent
, but its solubility is low, so if you want it diffused throughout the polymer, you need to keep it under pressure," he says.
The polyurethane foam itself does not have to be changed, only the blowing agent
that is used to pump the foam inside the panel walls.
in Midland, Mich., has developed a technique that uses pure carbon dioxide, instead of CFCs and HCFCs, as the propellant, or blowing agent
, in the manufacture of polystyrene foam.
As manufacturers of home refrigerators prepare to select the next-generation blowing agent
to use with polyurethane foam after 2002, Bayer Corporation, Pittsburgh, PA, is providing original research on blowing agent
options, and is offering the resources of its state-of-the-art Appliance Lab.
During production, a blowing agent
blows gas into the polystyrene.
It is a result of diffusion of the blowing agent
, typically pentane, out of the cells and its replacement in the cells by air.