Researchers at A&M University in Texas are developing a flame-retardant coating using a non-toxic and renewable material available in nature. It can possibly reduce flammability of polyurethane foam widely used in making furniture.
In collaboration with Stockholm’s KTH Royal Institute of Technology and team, the coating has already come into existence.
One of the Stockholm researchers Dr. Jaime Grunlan says that, both cellulose and clay, found naturally act as mechanical reinforcements. He also claimed that they never used these two ingredients for making the thin film multilayer flame-retardant coating from water.
How this natural coating works?
The benefits of this technique include capacity of the coating that makes it an excellent oxygen barrier. To test the coating, Grunlan and team used adaptable polyurethane foam and fired it up using a butane light. They used butane light to decide the dimension of security the compounds provide.
On the other hand, uncoated polyurethane foam quickly liquefies as the fire catches up. The foam with the coating prevents the flame from harming not more than surface level, leaving the foam underneath intact.
Grunlan explained that the nanobrick wall structure of the coating reduces temperature experienced by the underlying foam which delays combustion. Next step for the flame-retardant project is to transition the approaches into an industry for further development and implementation. Researchers have published the study in the journal Advanced Materials Interfaces.